Three-dimensional Composite Materials Research Articles

Synergetic Adsorption of Dyes in Water by Three-Dimensional Graphene and Manganese Dioxide (PU@RGO@MnO2) Structures for Efficient Wastewater Purification

The improper discharge of industrial wastewater causes severe environmental pollution and the textile industry’s dye usage contributes significantly to industrial wastewater pollution. Hence, an effective method for removing the harmful substance methylene blue (MB) from dye wastewater is proposed. This method adopts a three-dimensional graphene composite material based on manganese dioxide (MnO2), named polyurethane@ reduced graphene oxide@ MnO2 (PU@RGO@MnO2). First, graphene is prepared with hydrazine hydrate as a reducing agent and polyurethane as a framework. MnO2 nanoparticles are synthesized by the reaction of potassium permanganate (KMnO4) with carbon. These nanoparticles are then loaded onto the three-dimensional framework to create the composite material. Finally, adsorption and removal experiments for MB are conducted to compare the performance of the composite material. The results indicate that the graphene based on the polyurethane framework exhibits favorable mechanical properties. The unique three-dimensional lattice structure provides abundant active sites for loading MnO2 nanoparticles, significantly increasing the contact area between the adsorbent and MB solution and thus improving the adsorbent utilization rate (reaching 94%). The nanoparticles synthesized through the reaction of KMnO4 with carbon effectively suppress the agglomeration phenomenon. Additionally, the introduction of dynamic adsorption and dynamic removal modes, aided by a water pump, substantially enhances the adsorption and removal rates, showcasing excellent performance. The research on a multi-porous three-dimensional structure holds significant practical value in water treatment, offering a new research direction for dye wastewater treatment.

Multistage pore structure legume-like UiO-66-NH2@carbon nanofiber aerogel modified electrode as an electrochemical sensor for high sensitivity detection of HMIs

Electrode material is the core component of electrochemical sensor, which has a decisive influence on the detection performance of heavy metal ions. A novel electrochemical sensor based on amino modified metal-organic frameworks loaded three-dimensional carbon nanofiber aerogel composite material was proposed. The UiO-66-NH2 was embedded into nanofibers through one-step electrospinning technology to forming a legume-like structure, ensuring the number of active sites N coordination with HMIs, which improved enrichment capacity of the sensor. 3D carbon nanofiber aerogel with multistage pore structure was developed by one-dimensional nanofibers as unit modules, which increases conductive path and HMIs transport channel. Accordingly, the UiO-66-NH2 @carbon nanofiber aerogel modified electrode (N-U@CFA/GCE) as an electrochemical sensor exhibited an ultra-high sensitivity and the low limit of detection for the simultaneous detection of Cd2+ (0.52 nM) and Pb2+ (0.46 nM) using the differential pulse anode stripping voltammetry and was feasible and accurate for the detection of actual environmental water. The novel sensor platform has high sensitivity, stability and anti-interference, which showing great potential on HMIs monitoring.

Comparison of Autografts and Biodegradable 3D-Printed Composite Scaffolds with Osteoconductive Properties for Tissue Regeneration in Bone Tuberculosis.

Tuberculosis remains one of the major health problems worldwide. Besides the lungs, tuberculosis affects other organs, including bones and joints. In the case of bone tuberculosis, current treatment protocols include necrectomy in combination with conventional anti-tuberculosis therapy, followed by reconstruction of the resulting bone defects. In this study, we compared autografting and implantation with a biodegradable composite scaffold for bone-defect regeneration in a tuberculosis rabbit model. Porous three-dimensional composite materials were prepared by 3D printing and consisted of poly(ε-caprolactone) filled with nanocrystalline cellulose modified with poly(glutamic acid). In addition, rabbit mesenchymal stem cells were adhered to the surface of the composite scaffolds. The developed tuberculosis model was verified by immunological subcutaneous test, real-time polymerase chain reaction, biochemical markers and histomorphological study. Infected animals were randomly divided into three groups, representing the infection control and two experimental groups subjected to necrectomy, anti-tuberculosis treatment, and plastic surgery using autografts or 3D-composite scaffolds. The lifetime observation of the experimental animals and analysis of various biochemical markers at different time periods allowed the comparison of the state of the animals between the groups. Micro-computed tomography and histomorphological analysis enabled the evaluation of osteogenesis, inflammation and cellular changes between the groups, respectively.

Study on the effect of hygrothermal aging on the properties of three-dimensional woven composite materials with damage

This study analyzed the hygroscopic characteristics and mechanical properties of three-dimensional woven composite materials under 70℃/85%RH conditions and with the presence of damage. First, the materials underwent hygrothermal aging tests, including analysis of mass change, moisture absorption rate, SEM microstructure, Fourier-transform infrared spectroscopy (FT-IR), dynamic mechanical analysis (DMA), and subsequent open-hole tensile and compression strength tests under different environmental conditions. Finally, macroscopic failure analysis was conducted. The results showed that as the hygrothermal aging time increased, the moisture absorption rate increased and the fiber surface became smoother, while the degree of debonding between the fiber and matrix increased. The open-hole tensile and compression strength of the composite material decreased as the aging time extended, and the environmental temperature had different effects on open-hole tensile and compression strength.

Recent Advances in Various Inorganic Nanoparticle Embedded Chitosan-based Multifunctional Materials for Wound Healing

Abstract: Scarless wound management remains a clinical challenge worldwide because of its com-plicated and overlapping phases of inflammation, clearing, and regeneration. Among the currently available dressing materials, hydrogels have attracted emerging attention as potential wound dress-ing materials because of their specific properties, such as porosity, tissue-mimicking architecture, softness, and improved mechanical, biological as well as physicochemical properties. However, naturally driven hydrogels have shown several advantages over conventional hydrogels because of their biodegradability, biocompatibility, high mechanical strength, and functionality. Recently, na-noparticle (NPs) integrated polymeric hydrogels (metals, non-metals, metal oxides, and polymeric moieties) have been established as analogous to these naturally driven hydrogels because of the synergistic effects of the NPs and polymers in the three-dimensional composite material. Over the years, researchers have reported the synthesis and potential applications of diverse inorganic and organic nanocomposite gels with antioxidant or antibacterial properties where they have exploited the intelligent incorporation of biomolecules into the NP-polymeric network that are beneficial for wound healing. Among various natural polymers as hydrogel matrix, chitosan-mediated hydrogel dressings have received extensive interest resulting in improved mechanical, biological, and physi-cochemical properties due to the well-reported antibacterial, antitumor, antioxidant, and tissue re-generation efficacies of chitosan polymer. This review is intended to summarize the recent devel-opments of inorganic nanoparticle-incorporated chitosan-based hydrogels as wound dressing mate-rials where various synthetic methodologies of these nanocomposite gels are extensively discussed via incorporating nanoparticles, active biomolecules, and other substances into the intrinsic struc-ture of the gels. In addition, the future and prospects of chitosan-based nanocomposite hydrogels as a novel wound dressing as well as tissue engineering materials are also highlighted.

Multiscale Recursive Micromechanics of Three-Dimensional Woven Composite Thermal Protection Materials Thermal Conductivities

Multiscale micromechanics predictions have been made for effective thermal conductivities and local thermal fields for a novel three-dimensional woven composite thermal protection system material. The multiscale recursive micromechanics approach, which enables micromechanics models to call other micromechanics models (or themselves recursively) to consider finer and finer length scales, has been employed. The multiscale model uses a recently developed version of the high-fidelity generalized method of cells micromechanics theory at each of three length scales. The results focus on the impact of the microstructural geometry representation at each length scale on the material’s effective thermal conductivity, along with the local thermal flux and temperature fields induced in the microstructures.

Analysis of multiple impact tests’ damage to three-dimensional four-directional braided composites

Abstract This article was designed with a plurality of impact tests of three-dimensional four-directional braided composites, and the impact response of specimen impacted by a circular punch was studied. Ultrasonic C-scanning was used to detect the internal damage area to study the damage propagation process under multiple impact loads. The finite-element software ABAQUS was used to model the meso-structure of three-dimensional four-directional braided composites. Based on material characteristics, the three-dimensional Hashin damage criterion was used for the fiber bundle, and the maximum stress criterion was used for the matrix to judge the material damage. Combined with test and simulation results, the failure mode and damage evolution process of the specimen under multiple impact loads were studied. The results showed that the impact resistance of the three-dimensional woven composite material is affected by the braided angle. The larger the braided angle of the specimen, the better the impact resistance. The damaged area of the large braided angle material expanded to the periphery, and the damaged area of the small braided angle material was primarily developed in the longitudinal direction. The failure modes of the specimen during the impact process were primarily a longitudinal tensile failure of fiber bundles, transverse tensile failure and transverse compression failure of fiber bundles and matrix.

Enzyme-Free Electrochemical Sensors for in situ Quantification of Reducing Sugars Based on Carboxylated Graphene-Carboxylated Multiwalled Carbon Nanotubes-Gold Nanoparticle-Modified Electrode.

The reducing sugars of plants, including glucose, fructose, arabinose, galactose, xylose, and mannose, are not only the energy source of plants, but also have the messenger function of hormones in signal transduction. Moreover, they also determine the quality and flavor of agricultural products. Therefore, the in situ quantification of reducing sugars in plants or agriculture products is very important in precision agriculture. However, the upper detection limit of the currently developed sugar sensor is not high enough for in situ detection. In this study, an enzyme-free electrochemical sensor for in situ detection of reducing sugars was developed. Three-dimensional composite materials based on carboxylated graphene–carboxylated multi-walled carbon nanotubes attaching with gold nanoparticles (COOH-GR–COOH-MWNT–AuNPs) were formed and applied for the non-enzymatic determination of glucose, fructose, arabinose, mannose, xylose, and galactose. It was demonstrated that the COOH-GR–COOH-MWNT–AuNP-modified electrode exhibited a good catalysis behavior to these reducing sugars due to the synergistic effect of the COOH-GR, COOH-MWNT, and AuNPs. The detection range of the sensor for glucose, fructose, arabinose, mannose, xylose, and galactose is 5–80, 2–20, 2–50, 5–60, 2–40, and 5–40 mM, respectively. To our knowledge, the upper detection limit of our enzyme-free sugar sensor is the highest compared to previous studies, which is more suitable for in situ detection of sugars in agricultural products and plants. In addition, this sensor is simple and portable, with good reproducibility and accuracy; it will have broad practical application value in precision agriculture.

Synergistic Effect between Monodisperse Fe3O4 Nanoparticles and Nitrogen-Doped Carbon Nanosheets to Promote Polysulfide Conversion in Lithium-Sulfur Batteries.

Effective fabrication of electrocatalysts active in anchoring and converting lithium polysulfides is critical for the manufacturing of high-performance lithium-sulfur batteries (LSBs). In this study, original Fe3O4 nanospheres with diameters close to 12 nm were finely dispersed over a porous nitrogen-doped carbon matrix by the freeze-drying method to produce a three-dimensional composite material (nano-Fe3O4/PNC) suitable for application as a sulfur host in LSBs. Nano-Fe3O4/PNC loaded with sulfur (S@nano-Fe3O4/PNC) was used as a cathode in a Li-S cell, whose initial discharge specific capacity reached 1256 mA h g-1 at a 0.1 C rate. After 100 charge-discharge cycles at a 0.2 C rate, the reversible capacity of S@nano-Fe3O4/PNC remained at 745 mA h g-1, demonstrating a capacity retention rate of 70%. Importantly, a high Coulombic efficiency of more than 99% was achieved, indicating effective inhibition of the polysulfides' "shuttle effect" by nano-Fe3O4/PNC. The use of electrolytes containing lithium nitrate further reduces the "shuttle effect" of polysulfides. This study demonstrates the synergistic effect between metal oxide nanoparticles and N-doped carbon, which plays an important role in promoting the adsorption and conversion of polysulfides in LSBs.

Tensile and Stress Analysis of Hybrid Composite Prosthetic Socket Reinforced with Natural Fibers

Natural fibers and their composites are the evolving movements in material science, and with that, the utmost use of plant-based fibers has become the focus of this research. Sisal and cotton natural fibers were used to construct a prosthetic socket as an attempt to substitute material currently available in the manufacturing of sockets. The vacuum bagging technique was adopted to produce a below-knee socket. The influence of different fiber layering sequences on the volumetric and mechanical characteristics was estimated experimentally and numerically. Mechanical tensile tests were used to assess laminated specimens, such as tensile strength, young modulus, and elongation percentage. The number and type of reinforcing layers had an effect on mechanical properties, and the best composite specimens were three layers of sisal with two layers of carbon fiber, with tensile strength and modulus of elasticity reaching (261–4760) MPa, respectively. The finite element method (ANSYS- 16.1) was used to anatomize by seeing the contours distribution of safety factor, equivalent Von Mises stress, equivalent Von Mises strain, and total deformation. This procedure was executed by building ten models for the socket, which served as three-dimensional structural composite materials. The results of the present study advocate that the arrangement of natural and synthetic reinforcements allow the preparation of bio-composites with enhanced performance. This work revealed the assets of sisal and cotton fiber hybrid reinforced PMMA resin composites (hybridized at diverse volume percentages and lamination layup), which have not been tried up to now.

Synthesis and characteristic of the ternary composite electrode material PTCDA/CNT@MPC and its electrochemical performance in sodium ion battery

A three-dimensional composite carbon material ([email protected]) showing coaxial cable-like structure was prepared by carbon nanotubes (CNTs) and glucose through hydrothermal method. The ternary composite (PTCDA/[email protected]) was synthesized by coating a layer of 3,4,9,10-perylene tetracarboxylic dianhydride (PTCDA) molecules on the surface of [email protected] composite carbon material. The sodium ion battery was assembled using the ternary composite as the positive electrode material, and sodium metal as the negative electrode. The results show that the electrochemical performance of PTCDA/[email protected] composite is much better than that of pure PTCDA. The first discharge capacity is 131.2 mAh g−1 as the current density is 0.1 A g−1, which is close to its theoretical specific capacity of 135 mAh g−1. In particular, the battery shows better discharge properties at higher discharge current rate. When the current density reaches 10 A g−1, the PTCDA/[email protected] electrode material is still able to attain a superior capacity of 90.1 mAh g−1. This is due to the higher conductivity of [email protected] composite carbon material, which not only enhances the conductivity of PTCDA, but also increases the transport channel of ions, so as to increase the adsorption of sodium ions into the composite positive electrode. Therefore, the reversible capacity and cycle life of the composite electrode are significantly improved, which exhibit the excellent intercalation and de-intercalation performance for sodium ions and the charge-discharge rate performance.

Eigenstress-based shakedown analysis for estimation of effective strength of composites under variable load

In this paper, an efficient numerical approach is proposed in order to estimate the effective strength of three-dimensional (3D) composite materials with complex microstructure using a basis reduction method based on eigenstress and the second-order cone programming (SOCP). The key issue is the combination of the basis reduction method with SOCP and its detailed numerical implementation, in order to extend to the shakedown analysis of 3D composite materials requiring many integration points. The computational accuracy and efficiency of current approach is shown via numerical example for the fiber-reinforced composite using about 650,000 integration points. Moreover, numerical examples for the porous material and composite material containing randomly distributed spherical inclusions confirm the predictable capacity of current approach for estimating the effective strength of composite with complex microstructure.

A three-dimensional NiCo-LDH array modified halloysite nanotube composite for high-performance battery-type supercapacitor

Battery-type supercapacitors have aroused great interest in the field of energy storage devices and nickel cobalt layered double hydroxides (NiCo-LDHs) show great potential as electrode materials. However, the intrinsic low conductivity and possible agglomeration limit a wider application. In this work, a novel three-dimensional composite material (NiCo-LDH/D-HNTs) with a core-shell structure was prepared by self-assembling NiCo-LDHs nanosheets on dual surface-modified halloysite nanotubes (D-HNTs) via in-situ electrodeposition and hydrothermal method. HNTs were pretreated by a dual surface modification for the first time including a carbonization process and cobalt doping to enhance electrical conductivity and chemical stability. This multicomponent hierarchical nanocomposite, NiCo-LDH/D-HNTs, has a specific capacity of 1401.4 C g-1 at 1 A g-1, a rate capability of 52.9% increasing the current density to 30 A g-1, and cycling stability of 80.8% after 2000 cycles. With the tubular support, the electrochemical properties of NiCo-LDHs were extended in addition with the pseudocapacitance of HNTs. Besides the excellent electrochemical performance, NiCo-LDH/D-HNTs nanocomposites possess many advantages of abundance in nature, hydrophilicity, low cost and scalability. NiCo-LDH/D-HNTs nanocomposite can be considered as a promising, environmentally friendly, and cost-effective electrode material for supercapacitors and other energy storage devices.

Breakdown of Maxwell Garnett theory due to evanescent fields at deep-subwavelength scale

Deep-subwavelength all-dielectric composite materials are believed to tightly obey the Maxwell Garnett effective medium theory. Here, we demonstrate that the Maxwell Garnett theory could break down due to evanescent fields in deep-subwavelength dielectric structures. By using two- and three-dimensional dielectric composite materials with inhomogeneities at a scale of λ / 100 , we show that local evanescent fields generally occur near the dielectric inhomogeneities. When tiny absorptive constituents are placed there, the absorption and transmission of the whole composite will show strong dependence on the positions of the absorptive constituents. The Maxwell Garnett theory fails to predict such position-dependent characteristics because it averages out the evanescent fields. By taking the distribution of the evanescent fields into consideration, we have made a correction to the Maxwell Garnett theory so that the position-dependent characteristics become predictable. We reveal not only the breakdown of the Maxwell Garnett theory, but also a unique phenomenon of “invisible” loss induced by the prohibition of electric fields at deep-subwavelength scales. We believe our work promises a route to control the macroscopic properties of composite materials without changing their composition, which is beyond the traditional Maxwell Garnett theory.

Feasible preparation of Cu6Sn5 alloy thin-film anode materials for lithium-ion batteries from waste printed circuit boards by electrodeposition

Homogeneous and three-dimensional structural Cu6Sn5 alloy thin-film composite materials are successfully fabricated by efficiently electrodepositing the acidic leaching solution of waste printed circuit boards with the pH value adjusted to 10 at different current densities, which are confirmed by inductive coupled plasma-optical emission spectrometer, scanning electron microscope, and X-ray diffraction. When the Cu6Sn5 alloy thin-film composite materials electrodeposited at 5 mA/cm2 are employed as anode materials for lithium-ions batteries, the assembled coin cells can deliver initial discharge and charge specific capacity of about 617 and 502 mAh/g at 100 mA/g, respectively, and can retain a discharge specific capacity of 448 mAh/g after 25 cycles. Moreover, the cells assembled with Cu6Sn5 alloy anodes can exhibit an enhanced lithium-ion diffusion coefficient of 5.045 × 10−16 cm2/s with a lower transfer resistance of 63.43 Ω. Those results may provide an effective strategy for the resource utilization of low-value wastes into copper‑tin alloy thin-film electrode materials.

Three-dimensional hybrid carbon nanocomposite-based intelligent composite phase change material with leakage resistance, low electrical resistivity, and high latent heat

The development of shape-stabilized composite phase change materials (PCMs) is critical for realization of efficient thermal energy management systems and sustainable energy utilization. Herein, we designed an intelligent, multifunctional, organic composite PCMs with a three-dimensional (3D) hybrid nanocomposite and n-pentadecane. The 3D hybrid material was designed via integration of exfoliated graphene nanoplatelets (xGnP) and multiwalled carbon nanotubes (CNTs). The hybrid nanocomposite exploited the distinctive attributes and synergistic effect of each the supporting component for the well-designed composite PCMs to demonstrate high physical and thermochemical responses. The obtained composite PCM presented a high loading ratio of 82.7% and latent heat of 150.9 ± 0.9 J/g (which is 36% higher than that of the pristine xGnP-supported PCMs) owing to favorable space availability for phase change transformation with the aid of the CNTs skeleton. Moreover, the composite exhibited reduced supercooling (56.6% lower than that of CNTs-supported n-alkane), high leakage resistance capability, and thermal stability performance. The composite PCMs can also enable realization of a thermoelectric conversion system (lower than 101 Ω m resistivity, which is a reduction of more than six orders of magnitude compared with pristine n-alkane) and exhibit high thermal diffusivity (up to 3.707 mm2/s), indicating several practical applications thereof.

Preparation of 3D carbon conductive composite derived from nitrogen-rich resin/MWCNT and its application in supercapacitors

Carbon materials are considered as one of the promising materials in supercapacitors because of their distinctive electrochemical properties. In this study, N-doped carbon electrode materials, derived from melamine formaldehyde (MF) resin, a high-performance and N-rich thermosetting resin, used as an electrode active material for supercapacitor application. A simple method was adopted to fabricate the three-dimensional conductive composite materials by mixing the carbon nanotubes (CNTs) to the carbon material with different mass ratios. It was found that the reactant ratio of MF and CNT plays an important role in the improvement of electrochemical behavior. The sample of 7% CNT@MF-C showed a gravimetric specific capacitance of 319.6 F g−1 in 6 M KOH aqueous electrolyte at a current density of 0.5 A g−1, as well as capacitance retention of 97.8% after 10,000 cycles. A remarkable improvement in the electrochemical behavior was obtained by modifying the surface chemistry as well as the electrical conductivity of the carbon. The assembled symmetrical supercapacitors have a high energy density and power density of 9.53 Wh kg−1 and 400 W kg−1, respectively. The presence of porous carbon with intrinsic nitrogen-containing groups makes them more useful as high-performance supercapacitors. Overall, this simple approach exhibits great potential for carbon-based high-performance supercapacitor application.

Wet extrusion molding of wood powder with hydroxy-propylmethyl cellulose and with citric acid as a crosslinking agent

To mitigate global warming and the serious problems incurred by the disposal of petroleum-based plastics, it is important to develop derivatives of biomass materials that can be used as substitutes. To overcome the lack of thermoplasticity of wood, a wet extrusion molding process for wood powder using a cellulose derivative, hydroxypropylmethyl cellulose (HPMC), had been developed. However, this material quickly reabsorbed water, swelled, and disintegrated in liquid. In the present study, a natural organic acid, citric acid, was added and kneaded together with the wood powder, the HPMC, and water. The resultant clay-like material was extruded into a tube-shaped material. The tube was air-dried and heated at 180 °C for 5 min to 30 min to allow crosslinking. By heating 1% citric acid for 30 min, the material avoided disintegrating in water for 60 min. The addition of 3% citric acid with 30 min crosslinking gave the material water resistance in water for 12 h. The degradability in the water was found to be controllable by changing the amount of citric acid and the heating time. This is a novel result because wood can be molded into a practical three-dimensional (3D) biomass composite material using this technology with natural substances without relying on petroleum-based plastics.

Fabrication of a versatile composite material with three-dimensional superhydrophobic for aquatic show

Versatile composite materials integrating extreme water repellency with a series of characteristics have been seen as potential competitors for innovative applications. In this work, the author designs a three-dimensional superhydrophobic composite material (TSCM) featuring robustness and repairability by utilizing organic polymer components, polydimethylsiloxane (PDMS), and epoxy acrylate (EPA) and inorganic component, silica particle (SiO2). The bulk deposition and construction preparation method enables the TSCM to exhibit a special three-dimensional superhydrophobic property with a contact angle of 161° and a sliding angle of 2°. Benefiting from the establishment of the covalently cross-linking polymer scaffolding, the TSCM is able to withstand multi-cycles mechanical damage (>150 cycles) and present a damage-insensitive performance. Due to the three-dimensional superhydrophobic and roughness-regenerative characteristics, the TSCM also has the capability of repairing its deprived superhydrophobicity by a polishing procedure (>30 cycles), distinguishing the depletion of healing agents. Most importantly, the TSCM is used to exploit the aquatic light-reflective function of superhydrophobic materials for the first time. Desirably, on the basis of the aquatic light-reflective principle, not only the design control is realized but also the aquatic show is accomplished on each layer of the TSCM, which may widen the applications of superhydrophobic materials in various progressive and intelligent fields, such as deep-sea exploitation, undersea transportation, and aquatic decoration. Our studies convincingly show that this is a worthwhile approach to invent versatile composite materials featuring three-dimensional superhydrophobicity, robustness, and repairability for innovative applications.

Low-Temperature Highly Efficient and Selective Removal of H2S over Three-Dimensional Zn-Cu-Based Materials in an Anaerobic Environment.

In this study, novel three-dimensional ribbon-like composite materials have been introduced for selectively capturing H2S in a low-temperature dry anaerobic environment. First, a ribbon-like basic copper carbonate precursor with Zn doping supported on the activated semicoke (ASC) was successfully synthesized in situ by a two-step hydrothermal method for the first time. The porous Zn-Cu materials obtained after calcination were applied as a sorbent to remove H2S under anaerobic conditions at a low temperature. Effects of the heat treatment temperature, Cu loading content, and Zn doping content on the anaerobic desulfurization performance of Zn-doped CuOx/ASC sorbents were investigated. The optimal Zn-doped CuOx/ASC sorbent showed a satisfactory activity and selectivity to capture H2S efficiently with a breakthrough capacity of 126 mg/g. Further mechanism study demonstrates that the super desulfurization performance of this sorbent is mainly attributed to abundant pore distribution, the synergistic effect between copper and zinc, the extensive surface active oxygen, and so forth.