Simple Water Bath Research Articles

Catalytic performance of calcined Fe2O3/CA catalyst for NH3-SCR reaction: Role of activation temperature

With the purpose of developing an environment-friendly and high-efficiency catalyst for the selective catalytic reduction of nitrogen oxides (NOx) by ammonia (NH3-SCR), citric acid (CA)-decorated Fe2O3 (Fe2O3/CA) was synthesized via a simple water bath method and followed by calcination activation. The catalytic performance showed that the catalyst activity was closely related to the calcination temperature. When the calcination temperature was 300 ​°C, the as-synthesized catalyst displayed the best NH3-SCR activity, and extraordinary N2 and N2O selectivity in a wide range of operating temperatures. Subsequently, the crystal phase, morphology, physical features, chemical states, redox properties, and surface acidity properties of the as-synthesized catalysts were investigated by various characterization techniques. The results demonstrated that Fe2O3/CA calcined at a suitable temperature could promote the speciation transformation of the partial phase from α-Fe2O3 to γ-Fe2O3. In addition, appropriate calcination of Fe2O3/CA could also improve the reducibility and increase the number of acid sites. All of these factors, collectively, accounted for the excellent NH3-SCR activities of the catalyst.

Fe doped g-C3N4 composited ZnIn2S4 promoting Cr(VI) photoreduction

30% FeCN/ZIS (30% Fe doped g-C3N4 composited ZnIn2S4) was synthesized by a simple water bath method, via in-situ growth of abundant well-dispersed ZnIn2S4 nanosheets on the Fe doped g-C3N4 surface. Experimental results showed the optimized 30% FeCN/ZIS achieved the best photoreduction of Cr(VI) performance within a wide pH range, which was 9.5 times and 700 times higher than that of pure ZnIn2S4 and 30% FeCN (Fe doped g-C3N4). This is due to the intense synergy between the Fe-Nx bond and close interface contact produces a high-speed charge transfer channel, thus significantly improving the efficiency of optical carrier separation and migration. Meanwhile, UV-vis diffuse reflection spectra and photoluminescence spectroscopy showed that iron doping significantly narrowed the bandgap of g-C3N4, preventing electron-hole pair recombination. Further, the microstructures and charge separation properties were analyzed by scanning electron microscope, Photoluminescence Spectroscopy and time-resolved photoluminescence, which revealed the structure-activity relationship of composite structure and the synergistic mechanism of each functional component. This research should provide a viable technique for creating composites with high photocatalytic activity for the treatment of chromium-containing wastewater.

Automobile Cab Air Detection Based on Hollow Sphere NiO Gas Sensor

A novel NiO hollow sphere was synthesized by a simple water bath method while the carbon balls served as templates. Characterization and gas-sensing performance of NiO hollow spheres were tested. Owing to its hollow structure, the NiO obtained large specific surface area and abundant active sites. Furthermore, the gas sensors showed the enhanced formaldehyde sensing performance obtained a gas response of 21 to 50 ppm formaldehyde at 300 °C, short response/recovery time as 12 and 20 s, and excellent stability. These results indicate that the NiO hollow spheres play an important role on the VOCs sensing performance for practical detectors.

A novel ternary Ag-Cu2O/Ti3C2 heterostructure with high peroxidase-like activity for on-site colorimetric detection of galactose

In view of galactose as an essential marker in the diagnosis of galactosemia that affects newborns, a rapid and effective method for galactose detection is necessary. Herein, we provide a facile colorimetric biosensor for galactose detection by combining the ternary Ag-Cu2O/Ti3C2 heterostructure and galactose oxidase (Gal Ox). A series of tests showed the Ag-Cu2O/Ti3C2 nanozyme prepared by depositing truncated octahedral Ag-Cu2O on single-layer Ti3C2 nanosheets in a simple one-pot water bath procedure exhibited moderately higher peroxidase-like activity than either pure Ti3C2 nanosheets or binary Cu2O/Ti3C2. Gal Ox can catalyze the oxidation of galactose to yield H2O2, and Ag-Cu2O/Ti3C2 nanocomposites subsequently trigger a reaction between H2O2 and 3,3′,5,5′-tetramethylbenzidine (TMB), accompanied by a significant increase in absorbance at 652 nm. Under optimal conditions, the linear range of galactose is 30–600 μM, with a detection limit of 0.99 μM. Galactose was successfully detected in human serum using the stated method in agreement well with hospital results. Furthermore, we used the designed system to construct portable agarose gel-based assay kits and realized a linear detection ranging from 50 to 500 μM, demonstrating the feasibility of the on-site detection of galactose semiquantitatively and visually in human serum in conjunction with the ImageJ program.

High-Performance Photoelectrochemical Desalination Based on the Dye-Sensitized Bi2O3 Anode.

In this work, a solar-driven redox flow desalination system is reported, which combines a solar cell based on a Bi2O3 photoanode and a redox flow desalination cell through an integrated electrode. The Bi2O3 film was prepared through a simple one-step water bath deposition method and served as a photoanode after the coating of the N719 dye. The activated carbon (AC)-coated graphite paper served as both the integrated electrode and counter electrode. The I3-/I- redox electrolyte circulates in the solar cell channel between the photoanode and intergrated electrode, while the [Fe(CN)6]4-/[Fe(CN)6]3- electrolyte circulates in the redox flow desalination part between the integrated electrode and counter electrode. This dye-sensitized solar-driven desalination cell is capable of achieving a maximum salt removal rate of 62.89 μg/(cm2·min) without consuming any electrical power. The combination of the solar cell and redox flow desalination is highly efficient with double functions of desalination and energy release using light as a driving force. This current research work is significant for the development of efficient and stable photoanode materials in photoelectrochemical desalination.

Double dynamic bonds tough hydrogel with high self‐healing properties based on acylhydrazone bonds and borate bonds

AbstractHydrogels with excellent self‐healing properties have specific applications in smart polymer materials, but they often do not have excellent mechanical properties, or the preparation process of hydrogels is too complicated. Here, we prepared a multi‐functional intelligent hydrogel using a simple water bath one‐pot method through the synergistic effect of dual dynamic cross‐linked agents, including acylhydrazone bonds (the first cross‐linked agent) and borate ester bonds (the second cross‐linked agent), at the same time hydrogen bonds provided physical interaction. The hydrogel exhibited excellent self‐healing ability (up to 91%) and extraordinary mechanical strength (tensile stress 173.1405 kPa and hysteresis energy of 1.8659 MJ m−3). The research used chemical cross‐linked (acylhydrazone bonds and borate ester bonds) and physical cross‐linked (hydrogen bonds). The prepared hydrogel had the dual advantages of excellent self‐healing performance and high mechanical strength. The hydrogel can be used in smart materials, such as working pressure tissues and sensing materials that require a certain degree of mechanical strength and self‐healing properties, and also provides a design strategy for preparing hydrogels with high mechanical strength and excellent self‐healing properties.

FeNi@CNS nanocomposite as an efficient electrochemical catalyst for N2-to-NH3 conversion under ambient conditions

• FeNi@CNS nanocomposite was synthesized by a simple water bath process. • The FeNi@CNS nanocomposite showed great catalytic activity towards high faradaic efficiency, NRR to NH3 synthesis. • The strong chemical interaction between Fe and Ni plays a key role in the electrochemical activities. • The FeNi@CNS nanocomposite could serve as an active and durable NRR catalyst in 0.1 M Na2SO4 solution. The electrocatalytic nitrogen reduction reaction (NRR) has emerged as a promising renewable energy source and a feasible strategy as an alternative to Haber-Bosch ammonia (NH 3 ) synthesis. However, finding an efficient and cost-effective robust catalyst to activate and cleave the extremely strong triple bond in nitrogen (N 2 ) for electrocatalytic NRR is still a challenge. Herein, a FeNi@CNS nanocomposite as an efficient catalyst for N 2 fixation under ambient conditions is designed. This FeNi@CNS nanocomposite was prepared by a simple water bath process and post-calcination. The FeNi@CNS is demonstrated to be a highly efficient NRR catalyst, which exhibits better NRR performance with exceptional Faradaic efficiency of 9.83% and an NH 3 yield of 16.52 μg h −1 cm −2 in 0.1 M Na 2 SO 4 aqueous solution. Besides, high stability and reproducibility with consecutive 6 cycles for two hours are also demonstrated throughout the NRR electrocatalytic process for 12 h. Meanwhile, the FeNi@CNS catalyst encourages N 2 adsorption and activation as well as effectively suppressing competitive HER. Therefore, this earth-abundant FeNi@CNS catalyst with a subtle balance of activity and stability has excellent potential in NRR industrial applications. FeNi@CNS nanocomposite as an efficient catalyst for N2 fixation under ambient conditions.

Porous CdSnO3 nanocubics synthesized under suitable pH value for targeted H2S detection

Selectivity is still a major problem in gas sensors. In this study, porous CdSnO3 nanocubes were synthesized using a simple water bath reaction combined with calcination. The structures and morphology of CdSnO3 were characterized and manifested their wide range pore size distribution. The gas sensing studies revealed that CdSnO3 exhibits a high response to H2S at the optimized operating temperature of 220 °C. The influence of synthesis strategy (pH value) on gas selectivity was also studied. The possible sensing mechanism and reasons for improved sensing properties of the CdSnO3 sample were discussed by X-ray photoelectron spectroscopy and the first-principles method.

Comparison of reduced graphene oxides synthesized chemically with different reducing agents for supercapacitors

Abstract The chemical reduction of graphene oxide is an effective method for the synthesis of reduced graphene oxide, having the obvious advantages of low cost and large scale applicability. Our work produced reduced graphene oxide through a simple water bath reduction approach using various reducing agents of N2H4 × H2O, NaBH4, Na2S2O3, HI, and a reference sample without reducing agent at the same reduction temperature and duration time, by which reduced graphene oxides represented as N-RGO, B-RGO, S-RGO, I-RGO, and RGO0 were fabricated. Subsequently, unbonded flexible electrodes based on carbon cloth were fabricated with the reduced graphene oxides mentioned above, whereupon the structure, morphology and electrochemical performance were characterized. The electrochemical results indicate that the order of specific capacitances is N-RGO > B-RGO > S-RGO > RGO0 > I-RGO, while I-RGO’s potential window is wider than that of the others. As a result, N-RGO displays the best electrochemical performance among all reduced graphene oxides, with a specific capacitance as high as 176.0 F × g-1 and 77.8 % of the initial specific capacitance maintained at a high current density of 20 A × g-1.

N-doped carbon dots regulate porous hollow nickel-cobalt sulfide: High-performance electrode materials in supercapacitor and enzymeless glucose sensor

Transition metal sulfides (TMSs) are expected to be a new type of electrode material due to their excellent electrochemical activity. However, the poor capacity retention and stability of TMSs are obstacles to their practical application. Here, the porous hollow nickel-cobalt sulfides are fabricated via a simple water bath followed by anion exchange, which can be regulated by N-doped carbon dots (NCDs). Newly designed porous hollow structure provides more active sites, a cavity for storing electrolytes, and optimized electron/ion diffusion pathways. Then, the Ni-Co ratio and the NCDs doping mass are optimized, and the as-prepared NCDs/Ni2Co1S-50 displays a specific capacity of 764.1 C g−1 at 1 A g−1. A hybrid supercapacitor based on NCDs/Ni2Co1S-50 achieves an outstanding energy/power density (73 mWh cm−2/1.39 W cm−2) and exhibits favorable cyclic performance (96.5% maintain for 10 000 times). In addition, a glucose sensor based on NCDs/Ni2Co1S-50 modified glassy carbon electrode (GCE) is designed, with a wide detection range of 1 × 10−5-5 × 10−3 M and a low detection limit of 3.8 × 10−7 M (S/N = 3). The excellent electrochemical performance demonstrates the effectiveness of the manufacturing strategy of adjusting the properties of hollow-structured metal sulfides through carbon dots and provides a novel way to design new nanocomposite materials used for the multi-functional field.

Flexible micro-supercapacitors fabricated from MnO2 nanosheet/graphene composites with black phosphorus additive

Supercapacitors are widely used for powering flexible/wearable electronics owing to their excellent charge storage capabilities. In this study, MnO2 nanosheets were grown on the surface of graphene using a simple water bath method to prepare graphene/MnO2 composites for fabricating supercapacitors. In addition, two-dimensional black phosphorus was introduced as an additive into the electronic ink based on the as-prepared graphene/MnO2 composites. The characterization and electrochemical analyses results showed that adding black phosphorus considerably improved the capacitive performance of the material, yielding a high specific capacitance of 241.5 ​F ​g-1 at 0.1 ​A ​g-1 and an impressive rate capability improvement from 52.5% to 80.3%. Then the micro-supercapacitor having an area-specific capacitance of 20.15 ​mF ​cm-2 at a scanning rate of 2 ​mV ​s-1 was utilized to demonstrate the practical applicability of this material. To further evaluate the practical applicability of this micro-supercapacitor, the micro-supercapacitor was integrated with a flexible thin-film pressure sensor on paper and cloth through screen printing.

Three-Dimensional Carbon-Coated LiFePO4 Cathode with Improved Li-Ion Battery Performance

LiFePO4 (LFPO)has great potential as the cathode material for lithium-ion batteries; it has a high theoretical capacity (170 m·A·h·g−1), high safety, low toxicity and good economic benefits. However, low conductivity and a low diffusion rate inhibit its future development. To overcome these weaknesses, three-dimensional carbon-coated LiFePO4 that incorporates a high capacity, superior conductivity and low volume expansion enables faster electron transport channels. The use of Cetyltrimethyl Ammonium Bromid (CTAB) modification only requires a simple water bath and sintering, without the need to add a carbon source in the LFPO synthesis process. In this way, the electrode shows excellent reversible capacity, as high as 159.8 m·A·h·g−1 at 2 C, superior rate capability with 97.3 m·A·h·g−1 at 5 C and good cycling ability, preserving ~84.2% capacity after 500 cycles. By increasing the ion transport rate and enhancing the structural stability of LFPO nanoparticles, the LFPO-positive electrode achieves excellent initial capacity and cycle life through cost-effective and easy-to-implement carbon coating. This simple three-dimensional carbon-coated LiFePO4 provides a new and simple idea for obtaining comprehensive and high-performance electrode materials in the field of lithium cathode materials.

Implementations of temperature gradients in temperature-responsive liquid chromatography

Temperature Responsive Liquid Chromatography (TRLC) offers an alternative and environmentally friendly way to perform reversed-phase like separations. Its use of temperature responsive polymers to control retention based on column temperature, instead of the fraction of organic modifier in the mobile phase mobile, eliminates the need for solvent composition gradients and allows, for example, for purely aqueous separations. In principle this temperature induced retention should allow for gradient elutions to be performed using downward temperature gradients to control retention and refocus the analyte peaks. Yet, the unavailability of dedicated commercial temperature controlling systems allowing suitable temperature control in TRLC limits implementations thereof often to isothermal or step gradient applications. In this work we study the potential of 1) a simple yet programmable water bath and of 2) a modified HPLC system allowing column temperature programming through controlled mixing of a warm and cold mobile phase streams. The performance of both systems was evaluated under both isocratic and gradient applications, resulting in a more thorough understanding of the influence of temperature gradients in TRLC. This knowledge is then applied to a sample of phenolic solutes, illustrating that, although both systems have some flaws, both are able to impose temperature gradients in TRLC resulting in significantly reduced retention and enhanced refocusing of the analyte peak.

Rapid and sensitive detection of potato virus X by one-step reverse transcription-recombinase polymerase amplification method in potato leaves and dormant tubers

Potato virus X (PVX), is a serious threat to global potato production. A simple and rapid detection method is imperative for PVX diagnosis and early management. In this study, an isothermal one-step reverse transcription-recombinase polymerase amplification (RT-RPA) method was optimized for the quick and convenient detection of PVX in potato leaves and tubers. Our results revealed that this one-step RT-RPA method was highly efficient than the conventional reverse transcription-polymerase chain reaction (RT-PCR). The amplification reaction was free from cross-reactivity with other common potato viruses and completed within 30 min. Moreover, this RT-RPA assay did not require a thermocycler based specific temperature phase amplification and can be easily performed using a simple heating block or water bath at a temperature range of 39–42 °C. The sensitivity assay demonstrated that the developed one-step RT-RPA method was 100 times more sensitive than a routine one-step RT-PCR. Initially, the purified total RNA as the template isolated from infected leaves of potato was used for the detection of PVX. One-step RT-RPA was later performed using cellular disc paper-based simple RNA extract as a template that could detect the virus more efficiently than purified total RNA. The performance of the one-step RT-RPA assay was further evaluated using 500 field samples of leaves and tubers representing different cultivars and geographical regions. To our knowledge, this is the first report of rapid, sensitive, and reliable detection of PVX infection by one-step RT-RPA using cellular disc paper-based simple RNA extract from leaves and dormant tubers of potato. It is superior to the common RT-PCR assay in terms of its versatility, quickness, and independence of highly purified RNA template and can be adopted as a substitute to RT-PCR as an effective technique for seed potato certification, quarantine, breeding, and field surveys.

Rapid detection of avian leukosis virus subgroup J by cross-priming amplification

Avian leukosis virus subgroup J (ALV-J) causes oncogenic disease in chickens in China, resulting in great harm to poultry production, and remains widespread in China. Herein, we employed a cross-priming amplification (CPA) approach and a nucleic acid detection device to establish a visual rapid detection method for ALV-J. The sensitivity of CPA, polymerase chain reaction (PCR) and real-time PCR (RT-PCR) was compared, and the three methods were used to detect ALV-J in the cell cultures which inoculated with clinical plasma. The result showed when the amplification reaction was carried out at 60 °C for just 60 min, the sensitivity of CPA was 10 times higher than conventional PCR, with high specificity, which was comparable with RT-PCR, based on detection of 123 cell cultures which inoculated with clinical plasma, the coincidence rate with real-time PCR was 97.3% (71/73). CPA detection of ALV-J does not require an expensive PCR instrument; a simple water bath or incubator is sufficient for complete DNA amplification, and the closed nucleic acid detection device avoids aerosol pollution, making judgment of results more intuitive and objective. The CPA assay would be a promising simple, rapid and sensitive method for identification of ALV-J.

Fabrication of novel carboxyl and amidoxime groups modified luffa fiber for highly efficient removal of uranium(VI) from uranium mine water

Novel luffa cylindrica adsorbent modified with carboxyl and amidoxime groups is successfully prepared by a simple water bath method for effective U(VI) uptake from uranium-containing wastewater and real uranium mine water. The critical factors affecting U(VI) adsorption are explored, such as grafting time of carboxyl and amidoxime groups, solution pH, initial concentration of U(VI) and contact time. The results show that LC-CA2-AO4 obtained under optimal condition possesses outstanding adsorption performance to U(VI) (qmax, 399.1 mg g−1). Repeated adsorption/desorption experiments display that LC-CA2-AO4 can be efficiently regenerated by 0.50 mol L−1 HCl solution and reused for uranium adsorption. Adsorption capacity and desorption efficiency of LC-CA2-AO4 to U(VI) drop slightly after eight cycles of regeneration test. The accordance of kinetic data with pseudo-second-order kinetics model suggests that the adsorption reaction is controlled by chemical process. Moreover, LC-CA2-AO4 displays high removal rate to U(VI) in real uranium mine water. Based on this work, it is demonstrated that LC-CA2-AO4 would be a promising candidate for potential application in field of uranium adsorption.

Study on the catalytic activities of g-C3N4@TiO2 hollow microspheres under UV–visible light

TiO2 and g-C3N4 samples were successfully prepared by simple one-step hydrothermal method and calcination method, respectively. Then, g-C3N4@TiO2 hollow microspheres were prepared by simple water bath evaporation method. This work mainly studies the photocatalytic performance of a series of g-C3N4 composite TiO2 hollow microspheres with different contents. In the experiment, the amount of g-C3N4 was adjusted to obtain the highest photocatalytic activity. Therefore, finding the most suitable amount of g-C3N4 has become the main task of this work. By degrading the catalytic effect of Rhodamine B (RhB) solution, the photocatalytic performance of a series of samples was compared. Finally, it was discovered that when the weight ratio of g-C3N4 to TiO2 was 15%, the photocatalytic effect of the sample prepared in this way was the best and the sample was recorded as 15% g-C3N4@TiO2 composite. The heterostructure of TiO2 and g-C3N4 was constructed through the synergistic effect, achieving excellent photocatalytic performance to a certain extent. Therefore, the degradation rate of 15% g-C3N4@TiO2 composite material is 90.8% within 90 min of UV–visible light irradiation. We further used SEM, TEM, XRD, FT-IR spectroscopy, DRS, XPS and other test methods to characterize the composition, morphology and chemical properties of the composite material.

1633. Improving the diagnosis of extra-pulmonary tuberculosis (EPTB): experience from north India

BackgroundRapid and accurate diagnosis of extra-pulmonary tuberculosis (EPTB) is imperative for early treatment and better patient outcome. Loop-mediated Isothermal Amplification (LAMP) is a promising nucleic-acid amplification assay. LAMP assay could be carried out in simple water bath under isothermal conditions in 60 minutes, and can be performed in any laboratory even in rural setting in resource poor endemic countries. We evaluated LAMP assay using two different target regions LAMP primers specific for Mycobacterium tuberculosis complex for the diagnosis of EPTB.MethodsLAMP assay using 6 primers (each for IS6110 and IS1081) specific for Mycobacterium tuberculosis complex were performed on patients suspected of EPTB on various EPTB samples(CSF, Synovial fluid, Lymaphnode and tissue biopsies and various other samples) of 150 patients (50 confirmed, 100 suspected) Clinically suspected of EPTB and 100 non-TB control subjects.ResultsOverall LAMP test (using any of the two targets) had sensitivity and specificity of 96% and 100% for confirmed (50 culture positive) EPTB cases. In 100 clinically suspected but unconfirmed EPTB cases, LAMP was positive in 87 out of 100 cases (87%). Sensitivity of IS6110 LAMP, 1S1081 LAMP and IS6110 PCR for clinically suspected cases was 78 (78%), 84 (84%) and 70 (70%), respectively. In total 150 EPTB patients, the overall sensitivity of microscopy, culture, IS6110 PCR, IS6110 LAMP, 1081 LAMP and the LAMP test (if any of the two targets were used) were 4%, 33.3%, 74.6%, 82.66%, 87% and 92%, respectively. Specificity of all the tests was 100%. There were 8 cases which were missed by IS6110 LAMP and 2 cases by 1081 LAMP.ConclusionLAMP assay using two targets is a promising technique for rapid diagnosis of EPTB in 60 minutes especially in a resource poor setting who are still battling with this deadly disease.Disclosures All Authors: No reported disclosures

One pot preparation of CoMoO4 nanowires covered by CoMoO4 nanosheets for application in asymmetric supercapacitors

In this work, we report for the first time to prepare the CoMoO4 materials by a one-step simple water bath heating process. The morphology of the materials changes greatly when the temperature changes at a certain stage. The experimental results indicate the CoMoO4 is nanowire structure at 90 °C. When the temperature is 150 °C, the morphology of CoMoO4 is nanosheet structure. What is interesting in the experiment is that when we continuously adjust the temperature from 90 to 150 °C, we found that the CoMoO4 nanowires were covered by CoMoO4 nanosheets. The electrochemical performances of CoMoO4 nanowires, CoMoO4 nanosheets, and CoMoO4 nanowires covered by CoMoO4 nanosheets were researched. The electrochemical test results show that the CoMoO4 nanowires covered by CoMoO4 nanosheets demonstrate high specific capacitance 1960 F/g at a current density of 1 A/g, rate property 64.29%, and cycle performance with 98.79% capacitance retention after 10000 cycles. Furthermore, the CoMoO4 nanowires covered by CoMoO4 nanosheets were used as the positive material and active carbon as the negative material were assembled into the asymmetric supercapacitor device. This asymmetric supercapacitor device shows high energy density 55.47 Wh/kg and power density 12000 Wh/kg, and cycle performance with the capacitance retention 92.86% after 10000 cycles. These excellent results indicate the CoMoO4 nanowires covered by CoMoO4 nanosheets have potential competition in energy storage.

3D heterogeneous ZnCo2O4@NiMoO4 nanoarrays grown on Ni foam as a binder-free electrode for high-performance energy storage

3D heterogeneous ZnCo2O4@NiMoO4 core-shell nanowire/nanosheets nanoarrays (3D ZnCo2O4@NiMoO4 NAs) grown on the conductive Ni foam substrate was successfully synthesized by a two-step simple water bath heating method. The prepared composites were characterized by XRD, FESEM, and TEM and were found to ZnCo2O4 nanowires acted as the core and the NiMoO4 nanosheets covered as the shell. Using as a supercapacitor electrode, 3D ZnCo2O4@NMioO4 NAs/Ni foam demonstrate a high specific capacitance 1912 F g−1 (at the current density of 1 A g−1) and excellent rate capability (55% initial capacity retention at 20 A g−1). Furthermore, the asymmetric supercapacitors constructed with the anode (carbon nanotubes/Ni foam) and the cathode (3D ZnCo2O4@NiMoO4 NAs/Ni foam) exhibit excellent performances in energy storage. This solid-state device shows high specific energy 57.5 Wh∙Kg−1(at specific power density of 900 W∙Kg−1) and high specific power 18000 W∙Kg−1(at specific energy of 30 Wh∙Kg−1) by broaden the potentials range from 0 V to 1.8 V. These superior results of 3D ZnCo2O4@NiMoO4 NAs mainly comes from the synergistic effect of 3D array microstructure of the conductive ZnCo2O4/Ni foam and the nanosheet structure of NiMoO4. The ZnCo2O4/Ni foam can provide facial routes for the transfer of the ions and electrons and the nanosheet structure is benefit for the intercalation-deintercalation processes of OH− ions in the NiMoO4. This work provides a new strategy for the preparation of high-performance supercapacitor electrode.