ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2018
·Vol. 410
·期 30
·7921-7929
·
IF 3.307
Huang Mujia,He Daiping,Wang Mingzhu,Jiang Ping
High electrical conductivity and more active sites exposure are crucial for improving the performance of electrocatalyst. Binary metal oxide nanoarray grown on conductive substrate offers a 3D self-supported electrode with a great promise in boosting its performance in enzyme-free glucose sensing. Here, NiMoO 4 nanosheet arrays anchored on carbon cloth (NiMoO 4 NSA/CC) was prepared via a simple hydrothermal synthesis and used as 3D self-supported electrode for enzyme-free glucose sensing. The morphology and composition of NiMoO 4 nanosheet have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The electrochemical results show that NiMoO 4 NSA/CC exhibits remarkable high catalytic activity towards glucose oxidation, with a wide linear response ranging from 1 μM to 0.9 mM, a high sensitivity of 4.13 mA/mM·cm 2 , and a low detection limit of 1 μM (S/ N = 3). The enhanced performance might be attributed to the merits of nanosheet arrays with large surface area, self-supported electrode with 3D open network, as well as bimetallic component with high conductivity. Furthermore, NiMoO 4 NSA/CC also shows good selectivity and reliability for glucose detection in human serum. This work offers a new pathway for the construction of enzyme-free glucose sensor with high performance.
ᅟ
研究领域:
材料科学
·
分析化学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Shuang'an Liu,Senyang Wang,Zixin Wang,Wankun Qi,Haipeng Guo,Ying Liu,Yanhong Luo,Wenming Zhang,Ling Li
In this paper, PVP is used as the linking agent, and the NiMoO 4 nanoparticles-loaded carbon nanofibers composite NiMoO 4 /CNFs is prepared by the hydrothermal process, and it replaced the traditional Pt counter electrode. Obviously, NiMoO 4 nanoparticles are tightly loaded on carbon fibers, which helps to increase the overall catalytic active site. The results of specific characterization tests reveal that NiMoO 4 /CNFs composite has excellent electrocatalytic activity and stability. In the issue, DSSCs using NiMoO 4 /CNFs instead of Pt counter electrode reveal a photovoltaic conversion efficiency (PCE) of 7.67% versus Pt of 7.17% and CNFs of 5.65%, and it is expected to become an efficient alternative material for traditional Pt electrodes .
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2020
·
IF 5.774
Yongli Sun,Jingshuai Li,Luhong Zhang,Bin Jiang,Xiaodong Yang,Na Yang,Feifei Peng,Mi Xu,Xiaoming Xiao
In view of the serious water pollution issue, a kind of environmentally friendly, dual-functional, energy-efficient and low-cost superwetting material is urgently prepared for oil/water separation and the degradation of dyes in wastewater. In our work, dual-functional Zn-Ni-Co LDH@NiMoO 4 nanoarrays (ZNC-NM) with porous core-shell structure were constructed on the stainless steel mesh (SSM) via a facile two-step hydrothermal method. The coated mesh exhibited favorable superhydyophilicity and underwater superoleophobicity with underwater oil contact angle (OCA) of 164.9°. Meanwhile, the as-prepared mesh possessed ultrahigh separation efficiency and high permeation flux for a series of oil/water mixtures. In addition, the good anti-fouling and self-cleaning property enabled the separation efficiency remain above 99.90% after 60 separation recycles. By virtue of good stability and anti-corrosive property, there were no remarkable alterations in the separation efficiency and underwater OCA of the designed mesh in harsh environments. More importantly, the NiMoO 4 nanosheets anchored on Zn-Ni-Co LDH with the visible light responsiveness demonstrated favorable photocatalytic performance, which could efficiently degrade organic dyes in wastewater. Therefore, the dual-functional mesh coated with ZNC-NM nanoarrays based on this facile strategy is a promising material for oil/water separation and photocatalysis, owning great application potential in wastewater remediation.
研究领域:
环境科学
·
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Lili Guo,Jingqi Chi,Jiawei Zhu,Tong Cui,Jianping Lai,Lei Wang
Seawater electrolysis is an efficient method for producing carbon-neutral hydrogen; however, it is hindered by high energy cost and chlorine evolution reaction. In this study, we report Ru, P dual-doped NiMoO 4 multichannel nanorods in-situ grown on nickel foam (Ru/P-NiMoO 4 @NF), which can achieve chlorine-free hydrogen production by coupling seawater splitting with thermodynamically favorable urea oxidation . The Ru/P-NiMoO 4 @NF exhibits bifunctional activity with working potentials of 0.23 V to deliver 3000 mA cm −2 for HER and 1.46 V to deliver 1000 mA cm −2 for UOR. The overall urea splitting system in the two-electrode electrolyzer require low voltage of 1.73 V to drive 500 mA cm −2 , and demonstrate remarkable durability to keep above 100 mA cm −2 for 145 h. Density functional theory calculations reveal that dual-doping modulate the d -band center of catalyst, thus enhancing the adsorption of reactants and intermediates. This work provides information for designing catalysts for combing seawater splitting with urea purification.
研究领域:
材料科学
·
电催化
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Jingwen Shen,Qiguan Wang,Kai Zhang,Sumin Wang,Lu Li,Shibo Dong,Shaoting Zhao,Jian Chen,Risheng Sun,Yan Wang,Zengyun Jian,Wenzhi Zhang
Based on carbon cloth, flexible solid-state supercapacitors from bimetal oxide arrays of NiCo 2 O 4 @NiMoO 4 deposited by conductive polymers of polyaniline (PANI) are prepared employing a two-step hydrothermal reaction , followed by high-temperature annealing and an in-situ polymerization process. The presence of NiMoO 4 nanoplates prepared on NiCo 2 O 4 nanowhires leads to the hierarchical flower-like nanostructures . In order to further enhance the conductivity and wettability, NiCo 2 O 4 @NiMoO 4 is coated by the three-dimensional networks of PANI nanorods by means of the in-situ polymerization of aniline, the obtained NiCo 2 O 4 @NiMoO 4 /PANI nanocomposites illustrate a specific hierarchical holothurian-like morphology, which facilitates the adsorption and penetration as well as the rapid transportation of electrolyte ions within the nanopores in the active electrode materials , resulting in excellent electrochemical performances. The specific areal capacitance of the flexible carbon cloth-based electrodes reaches 2.38 F cm −2 at current density 1.0 mA cm −2 , and the capacitance retention is 92.36% of the initial value after 5000 cycles, which finds applications in flexible and wearable devices.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2024
·
IF 5.4
Qirun Wang,Wenjue Li,Zhenyu Zhang,Xiaowei Xu,Jichao Shi,Lin Lin,Dandan Wu,Sheng Han,Runping Jia,Shufang Chang
The design of multiphase heterostructures presents a promising strategy for oxygen evolution reaction (OER) and serves as an effective approach to constructing efficient alkaline OER catalysts. In this paper, the OER catalyst with a NiFe-NS/NiMoO4 layered heterostructure was synthesized by reflux condensation and hydrothermal methods. The unique rock-like nanospheres can increase the specific surface area and provide more active sites. The formation of heterojunctions through the modification of NiFe nanospheres on NiMoO4 nanorods can induce changes in their electronic structure. Due to its inherent properties, NiFe-NS/NiMoO4 demonstrates higher performance than commercial RuO2 (which has an overpotential of 228 mV at a current density of 10 mA cm–2), with overpotentials of 196 and 294 mV at current densities of 10 and 100 mA cm–2, respectively. The stability of the sample was proved to be excellent during a 50 h stability test. Density functional theory (DFT) calculations also indicate that the improved efficiency of the OER can be attributed to controlling and adjusting of the electron structure through heterojunction formation as well as the collaborative impact resulting from NiFe and NiMoO4. The structure enables optimized adsorption of intermediates and facilitates the kinetics of OER, and provides an idea for the design of heterogeneous catalysts.
研究领域:
材料科学
·
理论计算
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Naiyun Liu,Ruqiang Wu,Yixian Liu,Yunliang Liu,Peiji Deng,Yaxi Li,Yongchao Du,Yuanyuan Cheng,Zechao Zhuang,Zhenhui Kang,Haitao Li
Electrochemical nitrogen reduction reaction (NRR) is a promising method for ammonia synthesis under ambient conditions. However, the NRR performance is limited to an extremely strong N≡N bond in N2 and the competing hydrogen evolution reaction. Introducing oxygen vacancies (OVs) has been considered as a forceful means to accelerate the sluggish NRR reaction kinetics. Herein, we reported the design of Fe-doped NiMoO4 catalysts for NRR. Fe doping can increase the amount of OVs in the catalyst and contribute to lattice strain enhancement, thereby leading to the improvement of the electron transport rate and catalytic active for NRR. In 0.1 M Na2SO4 solution, the 5% Fe-NiMoO4 catalyst achieves a NH3 yield rate of 15.36 μg h–1 mgcat.–1 and a Faradaic efficiency of 26.85% under −0.5 V versus RHE. Furthermore, the 5% Fe-NiMoO4 catalyst exhibits excellent stability (up to 13 h) during the reaction.
研究领域:
材料科学
·
催化
·
电化学
·
化工
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Bo Yu,Guohua Jiang,Wangcong Xu,Cong Cao,Yongkun Liu,Na Lei,Uwamahoro Evariste,Pianpian Ma
The NiMoO 4 /CoMoO 4 nanorod arrays wrapped by Ni-Co-S nanosheets were successfully grown on the surface of carbon cloth (NCMOS@CC) by combining of hydrothermal and electrochemical deposition methods. And the as-prepared NCMOS@CC showed good flexibility. The obtained NCMOS@CC as electrode materials were tested in a three-electrode system, showing a pretty good specific capacitance of 778.1 F g −1 at a current density of 0.5 A g −1 and excellent rate capability using 1 M KOH as the electrolyte. The flexible asymmetric supercapacitors (FASCs) were further fabricated using NCMOS@CC as the positive electrode and activated carbon@carbon cloth (AC@CC) as the negative electrode. The fabricated FASCs exhibited a safe working range with a potential window of 0–1.6 V with a maximum energy density of 33.1 Wh Kg −1 at 0.25 A g −1 and maximum power density of 3195 W kg −1 at 4 A g −1 . The fabricated FASCs even bent at different angles still showed good flexibility and stable electrochemical properties . These performances enable the NCMOS@CC to be one of the potential flexible electrodes for using in flexible energy storage devices.
研究领域:
材料科学
·
能源存储技术
·
电化学
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Yan Liu,Xingnian Duan,Xiaoyu Qiu,Chengjia Luo,Xixiang Liu,Jianmei Cen
Developing efficient electrocatalysts is very important for hydrogen production. These catalysts help speed up the oxygen evolution reaction (OER). This is crucial for solving energy shortages and reducing pollution. Herein, Co-doped NiMoO 4 (Co-NiMoO 4 /NF) was successfully prepared by pyrolysis of ZIF-67 via an impregnation-hydrothermal strategy and as a catalyst for oxygen evolution reaction in alkaline solutions. The nanorod-nanosheet structure of Co-NiMoO 4 /NF provides large surface area and abundant active sites, while cobalt doping modulates the electronic structure of NiMoO 4 , which is conducive to the enhancement of the electrochemical activity of catalysts. Density-functional theory calculations further demonstrated that Co-doped Co-NiMoO 4 /NF was more favorable to the adsorption and stabilization of *OOH intermediates than NiMoO 4 /NF. As a result, Co-NiMoO 4 /NF exhibits excellent OER performance with an overpotential of 199 mV at 10 mA cm −2 and remains stable after 200 h of continuous testing under current density conditions of 10 and 500 mA cm −2 . The remarkable electrocatalytic performance of Co-NiMoO 4 /NF highlights its strong potential as an efficient catalyst for sustainable energy conversion systems.
研究领域:
电化学
·
材料科学
·
催化
·
纳米技术
·
能量转换
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2025
·
IF 2.6
Xiao Feng,Wang Lei,He Qihang,Xu Fan,Wu Donghua,Chen Chao,He Ping,Tang Bin
Designing promising electrode material for supercapacitor application with rich redox activities, high capacity and great cycling stability has become a research priority. Herein, a nanohybrid (CoS 1.097 -NiS-MoS 2 ) with nanosheets combining nanorods morphology is prepared by high-temperature pyrolysis sulfuration of ZIF-67/NiMoO 4 . Co-existence of multiple crystalline phases is favorable for enriching electrochemical active sites and facilitating electron transfer. Consequently, CoS 1.097 -NiS-MoS 2 displays better supercapacitor performance with a specific capacity of 373.6 C g −1 at current density of 1 A g −1 and excellent cycling stability of 70.01% after 3000 cycles, surpassing CoS 1.097 (49.1 C g −1 ; 59.26%) and NiS-MoS 2 (105.8 C g −1 ; 62.00%). Moreover, a hybrid supercapacitor is assembled with CoS 1.097 -NiS-MoS 2 and activated carbon, exhibiting high energy density of 21.0 Wh kg −1 at 800 W kg −1 . This work opens a path for preparation of promising ternary metal sulfide-based materials for the field of energy storage.
研究领域:
材料科学
·
电化学
·
能量存储
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Guang Yang,Jin Liang,Tian Lei,Yaxi Zhang,Zhao Yin
This study primarily centers on the fabrication of NiMoO 4 -C@Ni(FeMo)-Se composite electrocatalysts directly onto nickel foam substrates through a hydrothermal followed by electrodeposition technique. Through this method, the carbon submicron sphere structure, interlinked by NiMoO 4 nanorods , undergoes further optimization, resulting in a more refined NiMoO 4 -C@Ni(FeMo)-Se core-shell structure. The NiMoO 4 -C@ Ni(FeMo)-Se /NF composite electrode exhibited exceptional OER catalytic activity in a 1 M KOH solution, with an overpotential of merely 228 mV at a current density of 50 mA·cm −2 and a Tafel slope of 35.9 mV·dec −1 , significantly superior to that of the blank NF. Additionally, a 40-hour stability test at a current density of 50 mA·cm −2 demonstrated that the potential remained nearly constant, highlighting the exceptional OER activity and long-term stability of the synthesized catalyst. Moreover, in the overall water splitting process, the utilization of a dual-electrode NiMoO 4 ‐C@Ni(FeMo)‐Se/NF||Pt‐C/NF electrolytic cell demands a remarkably low potential of 1.48 V to achieve a current density of 10 mA·cm −2 , demonstrating exceptional electrocatalytic activity and long-term stability. Therefore, this study provides a promising route for the application of hydrogen production from alkaline aqueous solutions.
研究领域:
材料科学
·
电化学
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2021
·Vol. 12
·期 1
·1-10
·
IF 14.919
Wang Zengyao,Chen Jiyi,Song Erhong,Wang Ning,Dong Juncai,Zhang Xiang,Ajayan Pulickel M.,Yao Wei,Wang Chenfeng,Liu Jianjun,Shen Jianfeng,Ye Mingxin
Non-noble transition metal oxides are abundant in nature. However, they are widely regarded as catalytically inert for hydrogen evolution reaction (HER) due to their scarce active electronic states near the Fermi-level. How to largely improve the HER activity of these kinds of materials remains a great challenge. Herein, as a proof-of-concept, we design a non-solvent strategy to achieve phosphate substitution and the subsequent crystal phase stabilization of metastable β-NiMoO 4 . Phosphate substitution is proved to be imperative for the stabilization and activation of β-NiMoO 4 , which can efficiently generate the active electronic states and promote the intrinsic HER activity. As a result, phosphate substituted β-NiMoO 4 exhibits the optimal hydrogen adsorption free energy (−0.046 eV) and ultralow overpotential of −23 mV at 10 mA cm −2 in 1 M KOH for HER. Especially, it maintains long-term stability for 200 h at the large current density of 1000 mA cm −2 with an overpotential of only −210 mV. This work provides a route for activating transition metal oxides for HER by stabilizing the metastable phase with abundant active electronic states.
研究领域:
材料科学
·
电化学
·
催化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）