SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Ji Li,Ruoqi Xiao,Xiaoli Cheng,Xianfa Zhang,Yingming Xu,Lihua Huo
The effective detection of diisopropylamine gas is one of great significance in industrial production and human health. In this study, the availably detect of diisopropylamine gas was achieved by constructing CoMoO 4 /MoO 3 materials. The CoMoO 4 /MoO 3 sensor has highly selective diisopropylamine (S=87.6–10 ppm diisopropylamine) at 170 °C, with a response time of only 5.3 s. The lowest detection limit of the sensor is 5 ppb, which is the lowest detection limit in diisopropylamine gas sensors to date. Meanwhile, the CoMoO 4 /MoO 3 sensor also shows perfect diisopropylamine gas selectivity, moisture resistance, and long-term stability. Based on the advantages of p-n heterostructures and the synergistic effect of 2D nanosheets , CoMoO 4 /MoO 3 materials exhibits excellent diisopropylamine gas sensing properties. This work provides useful guidance for constructing of high-performance diisopropylamine sensors in the future.
研究领域:
材料科学
·
传感技术
·
环境监测
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2018
·
IF 6.14
Yan Xu,Linjie Xie,Di Li,Rong Yang,Deli Jiang,Min Chen
The exploration of earth-abundant and high-efficiency electrocatalysts for water oxidation is of great significance for sustainable energy conversion. Co–Mo-based bimetallic oxides are considered as promising candidates for the oxygen evolution reaction (OER) due to their high intrinsic activity and low cost. In this work, we reported an interfacial engineering design of CoMoO4 nanoplate arrays wrapped with Ni(OH)2 nanosheets supported on Ni foam for high-performance OER. Remarkably, benefiting from the hierarchical heterostructure arrays with strong interfacial interaction, enlarged surface areas, and more active sites, the optimized CoMoO4-Ni(OH)2 electrocatalyst manifests the excellent OER catalytic performance with a low overpotential of 349 mV at the current density of 100 mA cm–2, a long-term stability, and high (nearly 100%) Faradaic efficiency, which is superior to those of most previously reported Co–Mo-based bimetallic oxides electrocatalysts. Therefore, this interfacial engineering demonstrates an effective strategy for designing and fabricating high-performance electrocatalysts for OER reaction.
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
JOURNAL OF SOLID STATE CHEMISTRY
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2019
·
IF 2.291
Liangqing Hu,Li Ma,Mengyu Gan,Shenna Fu,Hongmei He,Minghang Jiang,Fei Xie,Huanhuan Zhang
The construction of cost-effective and durable electrocatalysts for methanol oxidation reactions (MOR) is a major challenge for direct methanol fuel cells. Herein, we report a novel catalyst support with CoMoO 4 in-situ coated on the Co,N-doped carbon polyhedrons (Co,N-DCP) by a hydrothermal method . Owing to the efficient electron transport , unique architectural structure and synergistic effect of carbon framework, bimetal oxides and Pt nanoparticles , the integrated Pt–CoMoO 4 @Co,N-DCP catalyst exhibits excellent MOR activity in alkaline electrolyte (a mass specific activity of 4450 mA mg pt −1 at 50 mV s −1 was achieved), which is nearly three times improvement when compared with the commercial Pt/C catalyst. Furthermore, the obtained Pt–CoMoO 4 @Co,N-DCP catalyst possesses remarkable electrochemical durability compared to commercial Pt/C. These results revealed that the Pt–CoMoO 4 @Co,N-DCP hybrid is a promising catalyst for MOR. The current work offers new perspectives in the designing of novel structure, highly active and stable catalysts materials in the application of DMFCs electrocatalysis .
研究领域:
材料科学
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燃料电池技术
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电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2022
·
IF 9.224
Mei Yang,Shilin Zhang,Tian Wang,Beibei Shi,Jingyan Liu,Yili Tang,Zonglin Xu,Muhammad Tariq Sarwar,Aidong Tang,Huaming Yang
The key to the development of non-noble metal catalysts with high activity and durability for the hydrogen evolution reaction (HER) in alkaline water/seawater conditions is to construct multi-interface electrocatalysts. Herein, the CoMoO4 nanorod arrays grown on foam nickel (NF) was first prepared by a hydrothermal method. Then, Ni(PO3)2-CoP4 with multi-interface was prepared by soaking the nanorod arrays into a nickel nitrate solution and then by phosphating via chemical vapor deposition. The Ni(PO3)2-CoP4/CoMoO4/NF electrode exhibits superior HER electrocatalytic performance under alkaline conditions with an ultralow overpotential of 79 mV@100 mA·cm–2, which outperforms other reported earth–abundant transition-metal phosphide catalysts. It also maintains long-term durability in alkaline water/seawater electrolytes in 60 h at a constant 100 mA·cm–2. In the alkaline natural seawater electrolyte, Ni(PO3)2-CoP4/CoMoO4/NF (−)||NiFe LDH (+) pair has good long-term stability of 60 h for the voltage of only 1.60 V@100 mA·cm–2. The excellent performance is attributed to the plentiful active sites and the rapid electron-transfer rate. This work affords a new path to rationalize the design strategy of low-cost and multi-interface 3D catalysts for alkaline water/seawater electrolysis.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
WATER AIR AND SOIL POLLUTION
·
2025
·Vol. 236
·期 12
·1-13
·
IF 3
Lan Meng,Zhang Diya,Dong Xiaoli,Zheng Nan,Gou Jialin,Liu Yujun
How to inhibit the photogenerated carrier recombination for enhancing the photocatalytic properties of semiconductor is still a key scientific problem to be solved. In this study, a novel Z-scheme CdS/CoMoO 4 (CdS/CMO) heterojunction photocatalyts were constructed by a two-step hydrothermal method. The photocatalytic degradation properties of CdS/CMO heterojunction photocatalysts for RhB was significantly enhanced compared to CdS and CoMoO 4 . The remarkable photocatalytic degradation efficiency could be credited to the expanding visible light absorption and construction of Z-scheme heterojunction. This work demonstrates a novel Z-scheme heterojunction photocatalyst for the highly effective removal of organic dyes, providing fresh ideas for water purification.
研究领域:
环境科学
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材料科学
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化学工程
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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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
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能源存储技术
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电化学
✓ 已验证
DOI
高影响因子
FUEL
·
2025
·
IF 7.5
Zheng Yang,Zeyang He,Vadim Efimov,Feitao Fan,Kuzmin Anton,Ting Bian,Shitan Yan
The development of efficient and durable bifunctional electrocatalysts is crucial for large-scale hydrogen production, yet remains challenging due to the sluggish kinetics of the oxygen and hydrogen evolution reactions. In this work, we report the rational design of a boron-doped Co 3 O 4 /CoMoO 4 heterostructure grown on nickel foam (B-Co 3 O 4 /CoMoO 4 /NF) as a robust bifunctional electrocatalyst for alkaline water splitting. By integrating B doping with Mo-induced surface reconstruction, the catalyst features abundant oxygen vacancies and optimized electronic configurations, which together accelerate reaction kinetics and improve stability. Electrochemical tests reveal that B-Co 3 O 4 /CoMoO 4 /NF requires only 299 mV to achieve 50 mA cm −2 for the OER and 255 mV to reach 50 mA cm −2 for the HER, accompanied by low Tafel slopes. The catalyst exhibits nearly unchanged activity during extended operation. In a two-electrode configuration, it delivers 50 mA cm −2 at a cell voltage of 1.741 V and maintains stable performance for 40 h, underscoring its strong potential for hydrogen production. This study provides a cost-effective and scalable strategy to construct heterostructure-doping dual-regulated catalysts with excellent bifunctional activity in renewable energy conversion.
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2024
·
IF 6.7
Xin Xiao,Rao Ma,Ke Jiang,Lushan Ma,Qiyao Wang,Shuang Meng,Tong Yang,Zhuo Qiu,Rong Hu,Long Huang
Hydrogen is promising fuel to replace fossil fuel due to its characteristics of high energy density and zero-emission. Water electrolysis is believed to play a prominent role for hydrogen generation and carbon neutrality. Designing economical and efficient electrocatalysts is crucial for hydrogen harvest from water electrolysis. Herein, nickel foam supported nickel–iron layered double hydroxide (NiFe-LDH) and CoMoO 4 nanosheet composites (NiFe-LDH/CoMoO 4 /NF) was fabricated by stepwise hydrothermal route. NiFe-LDH/CoMoO 4 /NF exhibited improved performance towards oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in alkaline environment. When NiFe-LDH/CoMoO 4 /NF was adopted as bifunctional catalyst for water electrolysis in 1 M KOH, the cell voltage was only 1.58 V and 1.79 V at 10 mA cm −2 and 100 mA cm −2 , respectively. Besides, NiFe-LDH/CoMoO 4 /NF exhibited tremendous durability for at least 100 h at high current density of 500 mA cm −2 . The improved activity and durability were due to: (1) strong interaction between Mo 6+ and Fe 2+/3+ , Co 2+/3+ , Ni 2+/3+ modulated the electronic structure thus promoted the adsorption/desorption of intermediates; (2) mixed-crystalline structure exposed high density of defect sites as active center to boost electrocatalytic reaction. The proposed multicomponent collaborative and crystalline engineering strategy can greatly improve the efficiency of hydrogen generation, and may be applicable for other electrocatalytic processes.
研究领域:
材料科学
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电化学
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Jincheng Mu,Jinming Feng,Xinyang Wang,Baojun Liu
Cobalt-based oxides are promising candidates for heterogeneous activation of peroxymonosulfate-based (PMS) advanced oxidation processes towards contaminants degradation, hence improving their catalytic performance is desirable requirement. Herein, an oxygen vacancy-rich flower-like CoMoO 4 catalyst (CoMoO 4 -V O ) assembled with nanosheets was successfully synthesized and applied for PMS activation to eliminate emerging contaminants. The CoMoO 4 -V O catalyst exhibits superior organic pollutants (e.g. sulfamethoxazole, SMX) removal performance with an apparent reaction rate of 1.29 min −1 , which is much higher than that of the original CoMoO 4 catalyst (0.30 min −1 ). Additionally, the catalyst also shows remarkable contaminants conversion in real river water, and even achieves more than 90 % of SMX degradation efficiency under a continuous flow reaction condition with a hydraulic retention time of approximately 2 min. The characterization and density functional theory (DFT) calculation results indicate that much electron accumulates around the formed oxygen vacancy on the surface of catalyst and transfers towards substrates. Meanwhile, the introduction of more oxygen vacancies could boost the adsorption of PMS as well as SMX, and the electron-donation capacity of catalyst, thus improving the generation of reactive oxygen species and the subsequent contaminate elimination. Radical quenching and capture experiments demonstrate that the enhanced degradation performance of CoMoO 4 -V O catalyst is attributed to the boosted radical pathway, especially for SO 4 − species, while scarcely contributed from the non-radical 1 O 2 species. This work provides an effective catalyst for contaminant elimination through PMS activation and deeply reveals the defect engineering-induced activity enhancement mechanism.
研究领域:
环境科学
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化学工程
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材料科学
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催化
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zhaofeng Chang,Zhichao Huang,Yingyu Fan,Piao Xia,Huaying Zhu,Luping Tian,Hui Wang,Anqi Wang,Bo Pan,Yunjiang Yu
Addressing the dual challenge of herbal medicine residue disposal and emerging contaminant remediation, this study pioneered a simple, scalable approach by converting natural tubular Ganoderma lucidum residue into hierarchically porous biochar (GLBC). The GLBC's open interconnected channels and higher specific surface area enable effective immobilization for CoMoO 4 nanoparticle, constructing a CoMoO 4 @GLBC heterostructure for peroxymonosulfate (PMS) activation to degrade bisphenol A (BPA). The CoMoO 4 @GLBC/PMS system achieved complete degradation of BPA (15 mg L −1 ) within 9 min (k obs = 0.78 min −1 ), surpassing single-metal catalysts (Co@GLBC and Mo@GLBC) by 10.7 and 28.2 fold, respectively. A synergistic radical / non-radical mechanism involved BPA degradation, where SO 4 •− primarily generated through Co/Mo interaction-mediated activation of PMS dominated the radical pathway, and 1 O 2 production from C O reduction on CoMoO 4 @GLBC and direct electron transfer (DET) facilitated by reduced charge-transfer resistance of CoMoO 4 @GLBC were non-radical mechanism. The possible BPA degradation pathways, ecotoxicity evolution of intermediates, reusability and practical application of CoMoO 4 @GLBC were investigated. In addition, CoMoO 4 @GLBC/PMS system exhibited an excellent broad-spectrum degradation capability for pharmaceuticals and dye, and compared to other Co-based catalysts (e.g. CoFe 2 O 4 and Co 3 O 4 ), the Mo in CoMoO 4 acted as an electron buffer enhanced the Co (II)/Co (III) redox cycle and reduced Co leaching. This work proves the significant potential of Ganoderma lucidum residue as a low-cost, high-performance material for environmentally sound applications in efficient environmental remediation.
研究领域:
环境科学
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材料科学
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催化化学
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污染控制工程
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资源循环利用
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应用化学
✓ 已验证
产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2020
·Vol. 49
·期 37
·13152-13159
·
IF 4.174
Feixiang Jiao,Jinhui Li,Jinlei Wang,Yu Lin,Yaqiong Gong,Xiaofei Jing
It is of extreme importance to design efficient electrocatalysts for hydrogen evolution reaction (HER), which is considered as a promising approach to provide efficient and renewable clean fuel (hydrogen). Tuning the electronic structure through heteroatom doping demonstrates one of the most effective strategies to promote the electrocatalytic performance of HER. Herein, phosphorus-doping modulation is utilized to fabricate monoclinic P-CoMoO4 with optimized electron structure supported on nickel foam (P-CoMoO4/NF) for alkaline HER via a facile hydrothermal method, followed by low-temperature phosphidation. Notably, P-CoMoO4/NF shows outstanding electrocatalytic performance for HER in 1 M KOH with a low overpotential of 89 mV at 10 mA cm−2, a remarkable Tafel slope value of 59 mV dec−1, and excellent 24 h-long stability. The excellent catalyst activity and stability merits of P-CoMoO4/NF are comparable to the reported highly efficient non-precious metal HER electrocatalysts and could be applied as a powerful electrocatalyst in water electrolysis. This work provides a superior synthesis strategy for the effective design and rational fabrication of low-cost, highly active, and highly stable non-precious metal HER electrocatalysts for electricity-to-hydrogen applications.
研究领域:
材料科学
·
电化学
·
可再生能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 5
·1-11
·
IF 2.8
Su Hao,Wang Qing,Dai Jianfeng,Li Weixue
Rational design of electrode materials is an important means to improve the performance of supercapacitors. In this paper, CoMoO 4 @Co 3 O 4 composite is prepared by hydrothermal treatment and sintering treatment using ZIF-67 as a self-supporting template. The CoMoO 4 @Co 3 O 4 electrode shows an excellent specific capacity of 2003 F g −1 at a current density of 1 A g −1 , and the capacity retention after 5000 cycles can reach 68% at a current density of 10 A g −1 . In addition, the asymmetric supercapacitor composed of CoMoO 4 @Co 3 O 4 composite and activated carbon (AC) shows an energy density of 56 Wh kg −1 at a power density of 750 W kg −1 and the capacity retention of 80% after 15,000 cycles at a current density of 10 A g −1 . The excellent electrochemical performance is attributed to the use of ZIF-67 as a self-supporting template to suppress the volume expansion and fragmentation of the CoMoO 4 @Co 3 O 4 electrode during charge and discharge.
研究领域:
材料科学
·
电化学
·
能量存储
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）