Luffa Cylindrica Fibers Research Articles

Life cycle assessment of Luffa‐reinforced epoxy composites: Untreated versus chemically treated fibers

AbstractThis research conducts a comprehensive cradle‐to‐gate life cycle assessment, comparing four distinct epoxy composites with each other and with the pure matrix. The composites investigated include epoxy resin reinforced with 25% and 50% untreated Luffa cylindrica fiber mats and 25% and 50% chemically treated Luffa cylindrica mats. The study defines the functional unit concerning the load at the fracture point and explores a real‐world scenario related to a potential industrial installation in southeastern Europe. The assessment utilizes 22 ReCiPe 2016 endpoint indicators to quantify impacts on human health, ecosystems, and resource availability. The findings indicate that the 50% chemically treated Luffa cylindrica‐reinforced epoxy has the least environmental impact, closely followed by the 50% untreated Luffa cylindrica. All four composites exhibit lower impacts than the pure epoxy resin. Notably, the 50% Luffa‐reinforced composites stand out as significantly environmentally favorable due to the substitution of fossil‐derived resin with natural fibers. This study underscores the potential of Luffa cylindrica as a promising and eco‐friendly reinforcement for epoxy composites.

Improvement of physical, chemical, mechanical, and morphological properties of Luffa cylindrica fiber reinforcement composites using Java seed filler

Improvement of physical, chemical, mechanical, and morphological properties of Luffa cylindrica fiber reinforcement composites using Java seed filler

Removal of phenol from wastewater using Luffa cylindrica fibers in a packed bed column: Optimization, isotherm and kinetic studies

This research entails a comparison of the effectiveness of unmodified Luffa cylindrica fiber in a fully packed bed (RLCF) and NaOH-modified Luffa cylindrica fiber in another fully packed bed (MLCF) in the context of phenol removal from wastewater. Experimental data obtained through batch adsorption experiments were utilized to determine the most suitable model. It was observed that as the initial concentration of phenol increased from 100 to 500 mg/l, the maximum percentage removal increased from 63.5 to 83.1% for RLCF-PB and from 89.9 to 99.5% for MLCF-PB. The correlation coefficient (R2) was calculated for the Langmuir, Freundlich, Temkin, Harkin-Jura, Halsey, and Flory-Huggins models for both materials. The analysis revealed that the pseudo-second-order model was the most suitable, followed by the Elovich model, with the pseudo-first-order model being the least suitable. The Weber-Morris diffusion model suggested that pore diffusion was the rate-determining step, and diffusion at the border layer was determined to be endothermic, feasible, heterogeneous, and spontaneous. In summary, this study indicates that MLCF-PB is a promising material for the efficient removal of phenol from aqueous solutions.

Luffa Cylindrica Fibers Unveiled: A Sustainable Approach for 4-Nitrophenol Removal in Aqueous Solutions through Activated Carbon Utilization

The prevalence of mutagenic and highly toxic compounds, such as 4-Nitrophenol (4-NP) and its derivatives, in industrial wastewater poses a significant environmental threat. This study emphasizes the critical need for public authorities to prioritize combating organic compound pollution for achieving sustainable development. The focus of this research is the preparation and evaluation of activated carbon adsorbents derived from Luffa cylindrica fibers (LC) for the efficient removal of 4-NP from aqueous solutions. The preparation involved carbonization process by heating LC in an argon furnace at 800℃, resulting in carbonized Luffa cylindrica fibers (LCC). Subsequently, chemical activation is performed using potassium hydroxide (KOH) solution, denoted as LCA. The properties of the adsorbent are identified through X-Ray Diffraction (XRD). To assess the removal efficiency of 4-NP, various parameters such as pH, adsorbent dosage, and 4-NP solution concentration are investigated. Optimal conditions for maximum 4-NP removal are achieved at a concentration of 50 mg/L, an adsorbent dosage of 0.75 mg/L (LCA), and a solution pH of 5. These conditions result in an impressive 99 % removal of 4-NP in 60 minutes. This study demonstrates the feasibility of utilizing locally available raw materials, such as LC fibers, to prepare an adsorbent with a robust adsorptive capacity for toxic pollutants like 4-NP. The findings underscore the potential of eco-friendly solutions in addressing environmental challenges and promoting sustainable practices in wastewater treatment.

Effect of micro‐sized luffa cylindrica fibers on the mechanical properties of epoxy epikote 828

AbstractMicro‐sized luffa cylindrica fibers (MLCFs) are made from raw luffa natural fibers from Vietnam and are environmentally friendly while possessing good mechanical strength. This work focuses on the mechanical properties of composite based on epoxy epikote 828 reinforced with MLCFs, particularly the fracture toughness. The results show that the MLCFs content has a great influence on the fracture toughness, especially the critical‐stress intensity factor (KIC) and izod impact strength of composite. Specifically, when using MLCFs reinforced from 0 to 2.0 wt.%, the critical‐stress intensity (KIC) increased from 1.89 to 4.60 MPa.m1/2, while the izod impact strength increased from 3.6 to 7 KJ/m2, respectively. The thermal behavior of the composite reinforced with MLCFs at different contents was determined using thermogravimetric analysis (TGA). The surface fracture structure of the composite samples was determined using scanning electron microscopy (SEM) method.

Water absorption and mechanical behaviour of green fibres and particles acting as reinforced hybrid composite materials

Abstract This paper highlights the results of an experimental study on the preparation and characterization of Luffa cylindrica fiber (LCF) and groundnut shell particle (GSP) reinforced phenol-formaldehyde (PF) hybrid composites. The amount of LCFs was fixed at 25 wt%, while the amount of groundnut shell particles ranged from 0 to 25 wt%. Observations were made regarding the water absorption and thickness swelling behaviour of prepared hybrid composites. In addition, the mechanical behaviours of hybrid composites have been studied under both dry and wet conditions. In comparison to dry conditions, the mechanical properties of the hybrid composites were lower when they were wet. Hybrid composites comprising 25% Luffa cylindica fibre and 15% groundnut shell particle (25LCF/15GSP) exhibit the highest level of mechanical properties under both conditions. The percentages of water absorption and thickness swelling increase as groundnut shell particles increase. The composite 25LCF/25GSP exhibited the highest percentage of water absorption and thickness swelling. Compared to date palm leaf (DPL)-reinforced composites, 25LCF/15GSP showed more significant mechanical and physical properties. We concluded that the inclusion of groundnut shell particles in LCF/PF composites substantially improved the mechanical properties of the hybrid composite. The range of increment, however, was narrower under moist conditions compared to dry conditions.

Green biodegradable dielectric material made from PLA and electron beam irradiated luffa cylindrica fiber: devices for a sustainable future.

The growing prevalence of polymer-based plastics in the environment is an imminent risk to the natural world. As an immediate consequence of this, extensive research has been launched over the course of the past few decades in an effort to reduce the damage that manmade plastics cause to the natural environment. The current study attempts to explore the biodegradability of polylactic acid (PLA), a bio-compatible plastic, by incorporating small amount of electron beam irradiated natural fibers (2 to 10%) derived from luffa cylindrica (LC) at varying irradiation doses (0.5 Gy, 1 Gy, and 2 Gy). Natural fiber surface treatment using electron beam irradiation is effective and environmentally friendly. The biodegradation of composites was studied for 90 days in sand, soil, compost, brackish water, fresh water, salt water, and bacterial and fungal conditions. Maximum decomposition was observed in the composite sample (PLA/10% wt of LC fiber at 2.0 Gy) at 15.42% and 4.73% in bacterial and soil environments. X-ray diffraction (XRD) and Raman spectroscopy validated the fiber and PLAs crystallinity and molecular interaction. The derivative thermo-gravimetric curve (DTGA) showed that electron beam irradiation removed moisture, hemicelluloses, and lignin from hydrophilic fibers. The incorporation of LC fibers into the bio-composites resulted in an increase in the glass transition temperature (Tg), melting temperature (Tm), and crystallization temperature (Tc). Additionally, after LC fiber reinforcement, the composites' dielectric properties were enhanced.

Microalgal-based macro-hollow loofah fiber bio-composite for methylene blue removal: A promising step for a green adsorbent

This study looked into how well the macro-hollow loofah fiber with and without the bio-attaching with green microalga (Chlamydomonas reinhardtii OR242521) was applied methylene blue elimination from water. Based on the results, the biosorption capacity of loofah sponge for methylene blue significantly increased with the increase of contact time, weight of microalgal biofilm, and methylene blue concentration. The maximum biosorption capacity was achieved after 120 min, after 0.042 mgg−1 biofilm weight, and MB concentration of 140 mgL−1. Furthermore, methylene blue's biosorption capacity was strongly affected by pH, reaching its maximum at pH 7. The biosorption capacity of the bio-attached loofah sponge was much higher than that of the loofah sponge, revealing that the microalgae bio-attachment enhanced the biosorption capacity of the loofah sponge. At the end of the MB biosorption process, the used bio-attached loofah sponge can still be utilized once more for the same purpose after the desorption of MB but with a lower biosorption capacity. Furthermore, the loofah sponge could also be applied as a bio-sorbent after domestic use. According to this study, the loofah sponge with or without algal biofilm attachment could be applied as a low-cost efficient bio-sorbent for methylene blue removal from water. However, the loofah sponge's ability for biosorption was dramatically increased by the bio-attachment of microalgae, making it a more potent bio-sorbent. Likewise, this study offers insights into the variables influencing the biosorption capacity of loofah sponges and bio-attached loofah sponges, which could be beneficial for enhancing the biosorption processes.

Effect of fiber surface functionalization on adsorption behavior of uranium from seawater desalination brine

Inspired by the easy availability and modification of fiber-like materials for water treatment and sorption applications, the functionalized natural fiber luffa cylindrica (LC) and synthetic fiber polyacrylonitrile (PAN) have been designed for the uranium adsorption. Seawater desalination brine has a significantly higher concentration of uranyl ion, so it is very meaningful to extract uranyl ions from it. In this paper, the seawater from seawater desalination plant at various treatment stages was collected to evaluate uranium adsorption performance. The effect of flocculant and scale inhibitors on uranium adsorption performance of functional fibers was also studied. The oxime/guanidine co-modified luffa cylindrica fiber (WGLC), guanidine/amidoxime co-modified polyacrylonitrile fiber (PAN-G-AO) and polyethyleneimine modified polyacrylonitrile fiber (PAN-PEI) were synthesized. PAN-G-AO showed excellent uranium capture performance with a high saturation adsorption capacity of 490.20 mg g−1 and rapid adsorption equilibrium at 15 min. Amount of uranium adsorption of three materials declined when flocculant and scale inhibitors were added. The results of adsorption experiments in various stages of seawater desalination solution for 30 days showed that adsorption materials PAN-G-AO had the largest adsorption capacity (18.6 μg g−1) in the concentrated desalinated seawater, which demonstrate promising application potential of the functionalized fiber materials for uranium adsorption from desalinated concentrated seawater.

Hydrothermally Modified 3D Porous Loofah Sponges with MoS2 Sheets and Carbon Particles for Efficient Solar Steam Generation and Seawater Desalination.

Although the emerging interfacial solar steam generation technology is sustainable and eco-friendly for generating clean water by desalinating seawater and purifying wastewaters, salt deposition on the evaporation surface during solar-driven evaporation severely degrades the purification performances and adversely affect the long-term performance stability of solar steam generation devices. Herein, to construct solar steam generators for efficient solar steam generation and seawater desalination, three-dimensional (3D) natural loofah sponges with both macropores of the sponge and microchannels of the loofah fibers are hydrothermally decorated with molybdenum disulfide (MoS2) sheets and carbon particles. Benefiting from fast upward transport of water, rapid steam extraction, and effective salt-resistant capacity, the 3D hydrothermally decorated loofah sponge with MoS2 sheets and carbon particles (HLMC) with an exposed height of 4 cm can not only obtain heat by its top surface under the downward solar light irradiation based on the solar-thermal energy conversion but also gain environmental energy by its porous sidewall surface, achieving a competitive water evaporation rate of 3.45 kg m-2 h-1 under 1 sun irradiation. Additionally, the 3D HLMC evaporator exhibits long-term desalination stability during the solar-driven desalination of an aqueous salt solution with 3.5 wt % NaCl for 120 h without apparent salt deposition because of its dual type of pores and uneven structure distribution.

MIL-101(Fe) based biomass as permeable reactive barrier applied to EK-PRB remediation of antimony contaminated soil

Numerous studies have demonstrated that electrokinetic-permeable reactive barrier (EK-PRB) can be used for the remediation of heavy metal contaminated soils, and their remediation efficiency is mainly determined by the filler material selected. By growing MIL-101(Fe) in situ on hollow loofah fiber (HLF), a novel material entitled HLF@MIL-101(Fe) was developed. The morphological characteristics and loading conditions were investigated, the adsorption characteristics were analyzed, and finally the synthesized composite material was applied to treat antimony-contaminated soil with EK-PRB as the reaction medium. The results show that MIL-101(Fe) is stably loaded on HLF. The adsorption capacity of Sb(III) can reach up to 82.31 mg g−1, and the adsorption is in accordance with the quasi-secondary kinetic model, which indicates that chemisorption is dominant. The isothermal adsorption model indicates that the adsorption form of HLF@MIL-101(Fe) is mainly monolayer adsorption with more uniform adsorption binding energy. In the EK-PRB experiment, when ethylenediaminetetraacetic acid (EDTA) is used as the cathodic electrolyte, it can effectively enhance the electromigration and electroosmotic effects, and the overall remediation efficiency of the soil is increased by 38.12% compared with the citric acid (CA) group. These demonstrate the feasibility of HLF@MIL-101(Fe) in collaboration with EK-PRB in the treatment of antimony-contaminated soil.

Development, characterization and photocatalytic study of biocomposites based on PTFE, TiO2 and LuffaCylindrica fibers

The present study focuses on the use of Luffa Cylindrica fibers as a reinforcing agent in a fluoroplastic (PTFE) polymer matrix and TiO2 nanoparticles as a photocatalytic agent with different mass fractions (%), for the purpose of the preparation and structural characterization of a new biocomposite material. The granulometry and zeta potential were measured using dynamic light scattering and laser Doppler velocimetry respectively. Structural and vibrational properties of the PTFE/TiO2/LC fibers composites were characterized by micro-Raman spectroscopy in oblique backscattering configuration and FTIR spectroscopy. Lastly, thermal properties were investigated using TGA and DSC. Further, the photocatalytic activity of samples was tested for the degradation of Methylene Blue dye (MB) in aqueous medium.

Experimental study on evaluation and optimization of heavy metals adsorption on a novel amidoximated silane functionalized Luffa cylindrica

This study aimed to synthesize an amidoximated Luffa cylindrica (AO-LC) bioadsorbent, and evaluate its efficiency in the adsorption of heavy metals from the aqueous solutions. For this purpose, NaOH solution was used to alkaline treatment of Luffa cylindrica (LC) fibers. The silane modification of LC was performed using 3-(trimethoxysilyl)propyl methacrylate (MPS). Polyacrylonitrile (PAN)/LC biocomposite (PAN-LC) was synthesized by PAN grafting onto the MPS-modified LC (MPS-LC). Finally, the AO-LC was obtained by the amidoximation of PAN-LC. The chemical structures, morphology, and thermal properties of biocomposites were characterized by the infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, and field emission scanning electron microscopy. The results showed a successful grafting of MPS and PAN on the surface of LC. The order of heavy metals adsorption on AO-LC was: Pb2+ > Ag+ > Cu2+ > Cd2+ > Co2+ > Ni2+. The effects of operational parameters on the Pb2+ adsorption were studied using Taguchi experimental design method. Statistical analysis of the results showed that the initial Pb2+ concentration and the bioadsorbent dosage significantly affect the adsorption efficiency. The adsorption capacity and removal percentage of Pb2+ ions were obtained as 18.88 mg/g and 99.07%, respectively. The Langmuir isotherm and Pseudo-second order kinetics models were found to be better compatible with experimental data as a consequence of the isotherm and kinetics analysis.

Ultraviolet Radiation-Assisted Preparation of a Novel Biomass Fiber to Remove Cadmium from Wastewater

The heavy metal adsorbents developed based on biomass resources have valuable application prospects due to the characteristics of rich sources, renewability and low cost. In the present work, a carboxyl functioned loofah fiber (LF@AA) was synthesized via UV-induced polymerization, and its adsorption capacity for cadmium (Cd2+) was investigated systematically. This modification resulted in the effective combination of a loofah fiber template and polyacrylic acid (PAA), which promoted its adsorption of Cd2+ to significantly increase to 339.3 mg·g−1, and the applicable pH range was 4.0~7.0. Furthermore, the adsorbability of LF@AA remained stable at a high level after eight consecutive cycles. The adsorption kinetics and isotherm parameters revealed that the adsorption characteristics of cadmium conformed to the Weber–Morris and pseudo-second-order kinetics equations, and the adsorption process of cadmium conformed to Redlich–Peterson and Langmuir models. In addition, consequences of EDS, FTIR, and Zeta potential analysis reflected that the main adsorption mechanism should be ion exchange. Cd2+ was drawn to the adsorbent surface by electrostatic binding, and ion exchange occurred to form a bidentate chelate. This study suggests that it is reasonable and feasible to use natural biomass materials to develop efficient adsorbents to treat heavy metal pollution in wastewater.

Analysis of mechanical and thermal properties of polypropylene composite reinforced with Luffa cylindrica

Vegetable fibers have an economic potential to be employed as polymer reinforcement. This is due to their low cost, biodegradability, recyclability, adequate mechanical properties, and because they come from renewable sources. The growing need for alternative materials that meet the demands of various industrial segments (aerospace, mechanics, automobile, petrochemistry, shipping, civil engineering etc) requires detailed investigations on their physical, mechanical, and chemical properties. Detailed information about the behavior of fibers in a polymer matrix can indicate whether they can produce a structural composite. This work investigated the mechanical and thermal properties of polypropylene (PP) samples containing 0%, 10%, and 20% (w/w) Luffa cylindrica fibers, as well as to analyze the morphology of the fibers before and after their processing with the polymer. The mechanical results of the composites showed that those plant fibers reduced the strain of pure PP, increasing its stiffness. Thermogravimetric trials revealed that the composite had its thermal stability reduced with an increase in fiber content.

“Cobweb locking raindrops” inspired construction of bio-based 3D porous molecularly imprinted membrane with ultrahigh adsorption capacity and selectivity: Effectively avoiding imprinting sites embedment

Generally, 2D “thin-film” structural molecularly imprinted membranes (MIMs) prepared by the common phase inversion method suffer low adsorption capacity due to the easy embedment of imprinting sites. Herein, an alternative “delayed phase inversion” strategy was first developed to construct a natural loofah-based 3D porous MIM (LPMIM), in which the as-prepared molecularly imprinted polymers (MIPs) with artesunate (ARU) as dummy template spontaneously interacted with the polyvinylidene fluoride (PVDF) pre-treated loofah framework (LPM), and evenly anchored on loofah fiber surfaces, similar to the cobweb locking raindrops. Interestingly, the natural 3D fiber cross networks of loofah not only provided sufficient capacity and space to support MIPs without causing aggregation and maintains high flux, but also the inherent high mechanical strength of loofah fibers endowed the LPMIM with excellent stability. Under dynamic conditions the ART adsorption capacity of LPMIM could be further remarkably improved by tailoring the flow rate of 1.19 mL·cm−2·min−1, up to 334.70 mg/g. As a result, effective enhancement in the artemisinin (ART) adsorption capacity were achieved for the LPMIM, which was about 2.25 times higher than that of the common blend MIM prepared by common phase inversion method (148.30 mg/g). Moreover, the LPMIM possessed high ART selectivity towards its analogue, artemether (ARE), giving an ART/ARE ratio of 2.7. Furthermore, the LPMIM displayed excellent recycling performance. By altering the template of MIPs, the corresponding LPMIM can be expanded to highly selective separation of other substrates along with large absorption capacity. This work highlights a universal strategy to construct novel MIMs with high absorption capacity and selectivity using bio-based fiber cross frameworks.

Thermophysical properties and grain size effects in Luffa Cylindrica-modified clay composites for thermal insulation

The study explored the thermal insulation potential of composite material made from clay and Luffa cylindrica. Clay/ Luff cylindrica composite (denoted as Clay/L-C) was developed from natural resources. In the research, Luffa cylindrica particles of different grain sizes and different proportions were mixed with clay, and thermal evaluations were done with respect to thermal conductivity, thermal diffusivity, specific heat capacity, mass depletion with temperature, and microstructure. Two different mixture ratios, namely 4:1and 3:2 corresponding to 20 wt % and 40 wt % Luffa cylindrica particle, respectively, were used for Clay/ Luffa cylindrica combination. While Luffa cylindrica particle sizes varied from 600µm to 300µm and 150µm, the effects of Luffa cylindrica content and particle size on thermal properties were then examined. These novel composite materials developed in this study demonstrate motivating potential for enhanced thermal insulation when compared to unmodified clay. Improved thermal insulation performance indicated by thermal properties was observed for all the modified samples. This is on the account of reduced thermal conductivity of the modified samples. The best sample possessed thermal conductivity, thermal resistivity, thermal diffusivity, specific heat capacity, and porosity values of 0.216 W/mK, 462.90°C.cm/W, 0.123 mm/s2 1.493 MJ/m3K, and 89.3%, respectively. Results show that Luffa cylindrica fiber can be applied as an additive for effective thermal insulation. Development in this area of study is very necessary especially as the raw materials are readily available and cost-effective.

Study of dielectric properties of electron beam irradiated luffa fiber/PLA composites

The complex dielectric relaxation behavior of a biodegradable polymer composite is probed in the present investigation. The polymer composite was modeled using biodegradable polymer poly (lactic) acid (PLA) as matrix and natural fiber of Luffa cylindrica (LC) as reinforcement using microcompounding and injection molding. Aforetime the LC fibers used as reinforcement in PLA matrix, the LC fibers were exposed to 6 MeV electron beam of varying doses from 0.5 to 10.0 Gy generated from medical LINAC at room temperature 26°C in presence of air. The modification in dielectric properties such as dielectric constant, dielectric loss factor, and ac conductivity was investigated in frequency range from 100 Hz to 1 MHz. The dielectric constant of virgin PLA increased from 61 to a maximum of 94 recording 52%increase when the electron beam-irradiated LC fiber is used as reinforcement in PLA matrix. The variation of dielectric constant and the dielectric loss factor in the frequency domain adhere to Debye model. However resonance peaks detected in the frequency spectrum of dielectric loss factor with the Cole-Cole variation substantiate the presence of multiple relaxations in the dielectric spectrum.

Loofah Sponge-Derived Hygroscopic Photothermal Absorber for All-Weather Atmospheric Water Harvesting.

The loofah gourd is like a natural water tank that stores underground water and drains it out after aging, leaving only a three-dimensional network consisting of hollow and interconnected fibers. This phenomenon inspired us to fabricate a solar-energy-powered sorption-based atmospheric water harvesting device using a loofah sponge. Herein, moisture absorption and photothermal conversion strategies are rationally designed to fast release the absorbed water. This is accomplished by filling the hollow and connected loofah fiber with LiCl and replacing the original luffa peel with a bacterial cellulose (BC)/carbon nanotube (CNT) photothermal conversion membrane. As a result, loofah/BC/CNT (LBC)@LiCl presents a high water absorption capacity of 2.65 g g-1 at 90% relative humidity (RH) and fast water release performance of 1.33 kg m-2 h-1 under 1.0 sun. Noticeably, ∼1.92-2.40 kg LBC@LiCl can produce daily drinking water for adults (2000-2500 mL) in one night outdoors at ∼66% RH, proving that it is a feasible method to overcome the drinking water shortage of poor and arid areas using cheap and renewable biomass material.

Hierarchical HCF@NC/Co Derived from Hollow Loofah Fiber Anchored with Metal-Organic Frameworks for Highly Efficient Microwave Absorption.

Hierarchical electromagnetic wave (EMW) absorption materials with a dielectric-magnetic dual-loss mechanism are promising candidates for highly efficient EMW attenuation. Herein, hierarchical dielectric-magnetic composite hollow carbon fiber@nitrogen-doped carbon/Co (HCF@NC/Co) was successfully synthesized via in situ growth of two-dimensional (2D) Co metal-organic framework (MOF) (ZIF-67) nanosheets on the surface of hollow loofah fiber (HLF), followed by a calcination process, where the aggregation of carbonized MOFs was effectively avoided to construct a homogeneous hierarchical one-dimensional structure. Based on the advantages of the carbon/Co dielectric-magnetic dual-loss mechanism that results in good impedance matching and multiple polarization loss arising from the extensive heterointerfaces (e.g., HCF-NC/Co, air-carbon, nitrogen-carbon, and Co-carbon interfaces), dipole active sites (e.g., doped N, Co particle, and crystalline defects in graphitic carbon), and hierarchical porous structures, optimal EMW absorption performance of HCF@NC/Co is achieved through regulating the calcination temperature and filler content, where the HCF@NC/Co calcinated at 700 °C exhibits a minimum reflection loss (RLmin) value of -50.14 dB with only 14% filler loading and 2.25 mm thickness, and the maximum effective absorption bandwidth (EABmax) also reaches 7.36 GHz. Meanwhile, adjustable EAB can also be achieved by optimizing the sample thickness, making it applicable in a wider frequency region. It is expected that our prepared HCF@NC/Co might shed light on designing lightweight and highly efficient EMW MOF-derived EMW absorbing materials.