JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Chengxiang Huang,Zhou Jiang,Detian Meng,Xiujuan Li,Jianrong Zeng,Xiangyu Wu,Meiqi Liu,Kexin Song,Fuxi Liu,Aofei Wei,Longyu Guo,Taowen Dong,Meng Zou,Wei Zhang
NiMoO 4 (NM) has garnered significant attention due to its rich d -orbital electronic structure and multivalent electroactive cations. However, the inherently low electrical conductivity of NM limits its reaction kinetics. Herein, cobalt-substituted NM (Co-NM) nanorods were prepared via a hydrothermal reaction followed by subsequent thermal treatment. The incorporation of Ni-O-Co configurations stimulates an enhanced π -donation effect of the Co-O bond, facilitating the hybridization between the O 2 p and Co 3 d orbitals and thereby boosting charge transfer kinetics during electrochemical processes. The optimized 10 %Co-NM nanorods demonstrated a remarkable specific capacity of 557.8 C·g −1 at 1 A·g −1 . Furthermore, an asymmetric supercapacitor constructed with 10 %Co-NM as the positive electrode and FeOOH as the negative electrode, achieved a significant energy density of 63.58 Wh·kg −1 at a power density of 805.38 W·kg −1 . Thus, our work provides new insights into the rational design of stable bridging configurations to significantly improve electrochemical reaction kinetics.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICA CHIMICA ACTA
·
2015
·
IF 4.513
Sheng-Hui Liao,Shi-Yu Lu,Shu-Juan Bao,Ya-Nan Yu,Min-Qiang Wang
Electrochemical oxidation of glucose is the guarantee to realize nonenzymatic sensing of glucose, but greatly hindered by the slow kinetics of its oxidation process. Herein, various nanomaterials were designed as catalysts to accelerate glucose oxidation reaction. However, how to effectively build an excellent platform for promoting the glucose oxidation is still a great challenge. In our work, 1D CaMoO 4 and NiMoO 4 nanofibres with same morphologies and sub-microstructures were fabricated by electrospinning technique in the first time, and explored to modify the detection electrodes of nonenzymatic glucose sensors. The electrochemical results indicated that the NiMoO 4 based sensor exhibited a good catalytic activity toward glucose including the low response potential (0.5 V), high sensitivity(193.8 μA mM −1 cm −2 ) with a linear response region of 0.01–8 mM, low detection limit (4.6 μM) and fast response time (2 s), all of which are superior to the corresponding values of CaMoO 4 nanofibres and even higher than those of most reported NiO and Co 3 O 4 catalysts, which is due to the NiMoO 4 nanofibres are not only advantageous to electron transfer , but can mediated the electrocatalytic reaction of glucose. This work should provide a new pathway for the design of advanced glucose catalysts for nonenzymatic sensor.
研究领域:
材料科学
·
生物医学工程
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Tengfei Zhang,Dan Xu,Ping Liu,Long Chen,Wen Guo,Tiantian Gu,Feng Yu,Yanyan Liu,Gang Wang
The development of economical, efficient, and durable bifunctional catalyst for overall water splitting is an attractive and challenging task. Herein, a novel defect-rich 2D/2D heterostructure is constructed by vertically growing S-doped NiMoO 4 (NiMoO 4 -S) nanosheets on nickel sulfide (Ni 3 S 2 ) nanosheet arrays supported on nickel foam (NF) using a two-step hydrothermal method. Benefiting from the hierarchical sheet-on-sheet heterogeneous nanostructure and abundant oxygen vacancies for more active sites, efficient electronic/mass transfer, and fast gas release, the synthesized NiMoO 4 -S/Ni 3 S 2 /NF electrode exhibits excellent electrocatalytic performance for HER (η 10 mA cm −2 = 107 mV) and OER (η 50 mA cm −2 = 285 mV). The alkaline water electrolyzer with NiMoO 4 -S/Ni 3 S 2 /NF as the positive and negative electrodes can provide a current density of 10 mA cm −2 with the potential of 1.52 V, which is below that of the commercial Pt||RuO 2 /NF system or many other reported systems. More importantly, the alkaline water electrolyzer offers a current density of 100 mA cm −2 at 1.85 V with outstanding durability of over 50 h. This research points to a promising route in designing transition metal-based bifunctional electrocatalysts for large-scale energy conversion applications.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Jian Tang,Jun Fang,Haochen Yao,Jianglong Wei,Geng Gao,Yusong Yang,Bin Yang,Yaochun Yao
Hierarchical structure design and heterostructure engineering are effective strategies for enhancing hydrogen evolution reaction (HER) performance, yet their synergistic integration remains underexplored. In this work, a novel hierarchical P-NiMoO 4 @Net-like Ni 2 P heterostructure HER electrocatalyst was prepared via a two-step hydrothermal method followed by low-temperature phosphorization. The three-dimensional net like Ni 2 P was closely integrated with one-dimensional phosphorus-doped NiMoO 4 micro/nanorod arrays, enabling hierarchical structural assembly and the formation of synergistic heterointerfaces. The hierarchical structure significantly increased active site exposure, with a double-layer capacitance of 254.4 mF cm −2 , more than five times that of single-component Ni 2 P (48.4 mF cm −2 ). Density functional theory calculations revealed that the heterostructure lowered the d-band center of active Ni 3 sites and optimized the hydrogen adsorption energy, thereby enhancing HER activity. The P-NiMoO 4 @Net-like Ni 2 P catalyst exhibited an alkaline HER overpotential of 49 mV at a current density of 10 mA cm −2 . It also maintained stable operation for 100 h at 10mA cm −2 and 120 h at 100mA cm −2 . This study demonstrates the potential of integrating hierarchical and heterostructural strategies, providing a reference for advanced nanostructured catalyst development.
研究领域:
材料科学
·
电化学
·
催化科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2022
·
IF 6.76
Jianzhi Wang,Yu Luo,Tong Xu,Ziyi Guo,Guopeng Chen,Yuchen Ren,Yanan Xue,Ning Cai,Hui Li,Faquan Yu
The development of low-cost and highly efficient electrocatalysts for oxygen evolution reaction (OER) with good conductivity, high specific surface area and abundant oxygen vacancies is of great significance for the future renewable energy conversion and storage system. Herein, Ag doped NiMoO 4 materials on the Ni foam (NiMoO 4 /Ag/NF) with rich oxygen vacancies were successfully prepared by hydrothermal strategy and layer by layer assembly method. The Ag ions are doped in-situ to promote electron transfer and compensate for the poor conductivity of metal oxides. The suitable air annealing treatment is used to create rich oxygen vacancies. The high specific surface area and one-dimensional characteristics of the cross mesoporous nanorod skeleton are responsible for the increased exposure of active centers and the rapid charge transfer behavior. The NiMoO 4 /Ag/NF exhibits high activity for OER in alkaline solution (an overpotential of 275 mV at the current density of 20 mA cm −2 ) and low Tafel slope (53.67 mV dec −1 ), and a satisfying durability in 1.0 M KOH. This study provides an effective method for the preparation of Ag doped one-dimensional nanomaterials with excellent OER catalytic performance and electrochemical stability.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
SURFACE REVIEW AND LETTERS
·
2018
·
IF 0.734
MAO ZHOU,YUQING MIAO
In the International Space Station, urine is considered something to be treated. However, urine is mainly composed of water and urea, while they have been demonstrated as an excellent hydrogen carrier for sustainable energy supply. Through the simple chemical coprecipitation and hydrothermal reaction, the needle-like NiMoO 4 crystals were synthesized with the average width around 500 nm and length up to 4 μ m. The resulted products were thoroughly characterized by scanning electron microscopy, energy dispersive X-ray spectrometry, X-ray diffraction, Fourier-transform infrared spectroscopy and ultraviolet–visible spectrum. The needle-like NiMoO 4 crystals exhibited excellent electrocatalytic oxidation toward urea at anode in alkali solution, leading to the increased performance of hydrogen evolution reaction at cathode with the lower electrochemical potential and energy consumption required to drive the reaction. The high electrocatalysis of the needle-like NiMoO 4 crystals toward urea oxidation reveals their great potential for future application to clean the urine/urea-rich wastewater and to produce hydrogen in space station and environmental wastewater.
研究领域:
材料科学
·
环境科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2022
·
IF 8.907
Jing Li,Yongjin Zou,Lei Jin,Fen Xu,Lixian Sun,Cuili Xiang
In this study, we modified graphene sheets with polydopamine, used abundant oxygen-containing groups to adsorb metal ions in a hydrothermal process, and obtained graphene-supported NiMoO 4 nanorod composite materials after pyrolysis . NiMoO 4 nanorods were uniformly dispersed on the surface of a reduced graphene oxide layer under strong electrostatic adsorption. The specific capacitance of the composite material measured at a current density of 1 A g −1 was 856 F g −1 (514 C g −1 ), and an asymmetric supercapacitor composed of activated carbon exhibited an energy density of 48 Wh kg −1 at a power density of 800 W kg −1 . After 5000 cycles of charging and discharging, a capacitance retention rate of 73% was achieved. Therefore, PDA-rGO@NiMoO 4 composite materials are promising candidate materials for supercapacitor electrodes.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS COMMUNICATIONS
·
2019
·
IF 3.674
Shaoyang Zhang,Guangwei She,Shengyang Li,Fangmu Qu,Lixuan Mu,Wensheng Shi
The surface structures of the electrocatalyst have great influence on its catalytic activity. In this study, the surface structures of NiMoO 4 particles were altered through a post-phosphorization treatment to enhance the electrocatalytic activity of NiMoO 4 for oxygen evolution reaction (OER). After the post-phosphorization treatment, an amorphous layer containing a large number of electrocatalytic active sites such as the phosphate, Ni P bonds as well as the oxygen vacancies was formed on the surface of crystalline NiMoO 4 particles. As a result, the electrocatalytic activity of the phosphorized NiMoO 4 for OER was significantly improved.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Chemistry-An Asian Journal
·
2019
·Vol. 14
·期 7
·1013-1020
·
IF 3.698
Shuo Geng,Weiwei Yang,Yongsheng Yu
Graphical Non-precious potential : Developing noble-metal-free, earth-abundant, highly active, and stable electrocatalysts with high efficiency for both hydrogen and oxygen evolution reactions in the same electrolyte is of great importance for the development of overall water-splitting devices. Heterostructured NiC/MoC/NiMoO 4 electrocatalysts have been synthesized through a facile method and the influence of anions with same morphology on water splitting has also been studied. Developing noble-metal-free, earth-abundant, highly active, and stable electrocatalysts with high efficiency for both hydrogen and oxygen evolution reactions is of great importance for the development of overall water-splitting devices, but still remains a challenging issue. Herein, a 3D heterostructured NiC/MoC/NiMoO 4 electrocatalyst was prepared through a facile synthetic procedure. The electrocatalyst shows a superior catalytic activity and stability toward the hydrogen and oxygen evolution reactions. The optimized NiC/MoC/NiMoO 4 catalyst presents low overpotentials of 68 and 280 mV to reach a current density of 10 mA cm −2 in 1.0 m KOH for the hydrogen and oxygen evolution reactions, respectively. Assembled as an electrolyzer for overall water splitting, such a heterostructure shows quite a low cell voltage of 1.52 V at 10 mA cm −2 and remarkable stability for more than 20 h. This work provides a facile but efficient approach for the design and preparation of highly efficient bifunctional and self-supported heterostructured electrocatalysts that can serve as promising candidates in electrochemical energy storage and conversion.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2019
·
IF 1.795
Yong Zhang,Cui-rong Chang,Xiao-dong Jia,Yang Cao,Ji Yan,He-wei Luo,Hai-li Gao,Yi Ru,Han-xin Mei,Ai-qin Zhang,Ke-zheng Gao,Li-zhen Wang
Transition metal oxide modified NiMoO 4 supercapacitor electrode materials were prepared by a simple solvothermal method. The effects of MnMoO 4 , ZnMoO 4 and CoMoO 4 on the structure, morphology and electrochemical performance of NiMoO 4 materials were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM), Raman, laser particle size analyzer, and electrochemical measurements. The results indicate that the metal oxides have significant influence on the morphology of NiMoO 4 . The NiMoO 4 , NiMoO 4 /MnMoO 4 , NiMoO 4 /ZnMoO 4 and NiMoO 4 /CoMoO 4 materials present pine needle-like, micron rod-like, ramotan fruit-like and coral cluster-like can be prepared by using three different transition metal oxides with the same experimental parameters. At the current density of 1 A g −1 , the discharge specific capacitance is 620, 430, 556 and 740 F g −1 , respectively. After 2000 charge and discharge cycles, the capacitance retention rate is as high as 99.4, 60.1, 96.0 and 89.1% with current density of 10 A g −1 , respectively. Compared with the other three morphologies, the coral cluster-like NiMoO 4 /CoMoO 4 composite structure provides more space and redox active sites, which could improve electrolyte diffusion efficiency and enhance electron transport.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Omega
·
2022
·
IF 4.132
Yue Yao,Enlai Hu,Zhiyu Wang,Yuanjing Cui,Guodong Qian
The rational design and synthesis of a highly efficient and cost-effective electrocatalyst for hydrogen evolution reaction (HER) are of great importance for the efficient generation of sustainable energy. Herein, amorphous/crystalline heterophase Ni–Mo–O/Cu (denoted as a/c Ni–Mo–O/Cu) was synthesized by a one-pot electrodeposition method. Thanks to the introduction of metallic Cu and the formation of amorphous Ni–Mo–O, the prepared electrocatalyst exhibits favorable conductivity and abundant active sites, which are favorable to the HER progress. Moreover, the interfaces consisting of Cu and Ni–Mo–O show electron transfers between these components, which might modify the absorption/desorption energy of H atoms, thus accelerating HER activity. As expected, the prepared a/c Ni–Mo–O/Cu possesses excellent HER performance, which affords an ultralow overpotential of 34.8 mV at 10 mA cm–2, comparable to that of 20 wt % Pt/C (35.0 mV), and remarkable stability under alkaline conditions.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2023
·Vol. 170
·期 9
·096508
·
IF 3.9
Xingxing Liao,Zhaode Mu,Panke He,Yonghua Yuan,Jiaxu Zhou,Lijuan Bai
In this work, a new non-enzymatic sensor for the determination of glucose was constructed using Fe-doped NiMoO4 nanoparticles (NiFeMoO4). Hydrothermal and calcination techniques were successfully used to synthesis different proportion nanoparticles of Ni1−xFexMoO4 (x = 0, 0.01, 0.03, 0.05). A set of electrochemical measurements demonstrated that all of the Ni1−xFexMoO4 have electrocatalytic properties to glucose. Especially, Ni0.99Fe0.01MoO4 (x = 0.01) displayed the most excellent amperometric response to glucose in the range of 0.01∼13 mM with a limit of detection (LOD) of 0.29 μM (S/N = 3). This amperometric sensor also showed satisfactory anti-interference performance and stability. More significantly, the sensor's applicability was tested using a glucose assay in actual serum samples with acceptable results.
研究领域:
分析化学
·
生物医学工程
·
材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）