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A CuNi/C nanosheet array Based on a Metal–Organic Framework Derivate as a Supersensitive Non-Enzymatic Glucose Sensor

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Nano-Micro Letters 2018年第2期10卷 104-113页

作者： Li Zhang Chen Ye Xu Li Yaru Ding Hongbo Liang Guangyu Zhao Yan Wang School of Chemistry and Chemical Engineering Harbin Institute of Technology Department of Ophthalmology Second Hospital Jilin University

Bimetal catalysts are good alternatives for nonenzymatic glucose sensors owing to their low cost, high activity, good conductivity, and ease of fabrication. In the present study, a self-supported CuNi/C electrode prepared by electrodepositing Cu nanoparticles on a Ni-based metal–organic framework(MOF) derivate was used as a non-enzymatic glucose sensor. The porous construction and carbon scaffold inherited from the Ni-MOF guarantee good kinetics of the electrode process in electrochemical glucose detection. Furthermore, Cu nanoparticles disturb the array structure of MOF derived films and evidently enhance their electrochemical performances in glucose detection. Electrochemical measurements indicate that the CuNi/C electrode possesses a high sensitivity of17.12 mA mM^(-1) cm^(-2), a low detection limit of 66.67 nM,and a wider linearity range from 0.20 to 2.72 mM. Additionally, the electrode exhibits good reusability, reproducibility, and stability, thereby catering to the practical use of glucose sensors. Similar values of glucose concentrations in human blood serum samples are detected with our electrode and with the method involving glucose-6-phosphate dehydrogenase; the results further demonstrate the practical feasibility of our electrode.

关键词： Non-enzymatic glucose sensor Nanoparticle nanosheet array Self-supported electrode Copper–nickel bimetal catalyst

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Iron-doped nickel disulfide nanoarray： A highly efficient and stable electrocatalyst for water splitting

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Nano Research 2016年第11期9卷 3346-3354页

作者： Na Yang Chun Tang Kunyang Wang Gu Du Abdullah M. Asiri Xuping Sun College of Chemistry Sichuan University Chengdu 610064 China Chengdu Institute of Geology and Mineral Resources Chengdu 610081 China Chemistry Department Faculty of Science King Abdulaziz University Jeddah 21589 Saudi Arabia

Developing efficient water-splitting electrocatalysts, particularly for the anodic oxygen evolution reaction （OER）, is an important challenge in energy conversion technologies. In this study, we report the development of iron-doped nickel disulfide nanoarray on Ti mesh （Fe0.1-NiS2 NA/Ti） via the sulfidation of its nickel-iron-layered double hydroxide precursor （NiFe-LDH NAFFi）. As a three-dimensional OER anode, Fe0.1NiS2 NA/Ti exhibits remarkable activity and stability in 1.0 M KOH, with the requirement of a low overpotential of 231 mV to achieve 100 mA·cm^-2. In addition, it exhibits excellent activity and durability in 30 wt.% KOH. Notably, this electrode is also efficient for the cathodic hydrogen evolution reaction under alkaline conditions.

关键词： nickel disulfide (NiS2) iron doping nanosheet array water splitting oxygen evolution reaction

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One-step synthesis of Fe-Ni hydroxide nanosheets derived from bimetallic foam for efficient electrocatalytic oxygen evolution and overall water splitting

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Chinese Chemical Letters 2018年第12期29卷 1875-1878页

作者： Lili Zeng Linjing Yang Jia Lu Jin Jia Jiayuan Yu Yunqie Deng Mingfei Shao Weijia Zhou Guangzhou Key Laboratory for Surface Chemistry of Energy Materials New Energy Research InstituteSchool of Environment and EnergySouth China University of TechnologyGuangzhou Higher Education Mega CenterGuangzhou 510006China Xinhua College of Sun Yat-sen University Guangzhou 510520China State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China

The research of superior water oxidation electrodes is essential for the green energy in the form of hydrogen by way of electrolytic water splitting, and still remains challenging. Based upon dealloying foam, Fe-Ni hydroxide nanosheets network structure is designed on the surface of Fe-Ni alloy foam. The ratio of Ni/Fe elements was adjusted to realize the optimal catalytic activities for oxygen evolution reaction（OER） and hydrogen evolution reaction（HER）. The obtained electrode of Fe-Ni hydroxide nanosheets/Fe-Ni alloy foam-60% Fe（FN LDH/FNF-60, 60 is the percentage of Fe content） possess low overpotential of 261 mV to reach 10 mA/cm;, small Tafel slope（85.5 mV/dec）, and superior long-term stability（remaining 10 mA/cm;for over 14 h without attenuation） toward OER in 1.0 mol/L ***, an alkaline water electrolyzer is constructed with the FN LDH/FNF-60 as anode and Ni（OH）;/Fe-Ni alloy foam-25% Fe(Ni（OH）;/FNF-25) as cathode, which displays superior electrolytic performance（affording 10 mA/cm;at 1.62 V） and lasting durability.

关键词： One-step synthesis Bimetallic foam Water splitting Fe-Ni hydroxide nanosheet array

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A facile one-step method for the fabrication of Pd-AlOOH/Al monolithic catalysts via redox reactions of two galvanic cells

A facile one-step method for the fabrication of Pd-AlOOH/Al ...

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第二十四届大气污染防治技术研讨会

作者： Yongfeng Li School of Chemical Engineering and Light Industry Guangdong University of Technology

In this work, we report a facile and economic one-step method under atmospheric pressure and 50 ℃ water bath for the fabrication of a three-dimensional(3D) upright-standing boehmite(AlOOH) nanosheet array film on a structured Al honeycomb substrate, in which zero-valence palladium(Pd) nanoparticles were well distributed at the same time. Redox reactions of two galvanic cells where the Al honeycomb substrate acted as the common anode, but the palladium precursor(Pd(NH)) and weak base water(HO + OH) served as the electrolyte of cathode Ⅰ and Ⅱ respectively, led to simultaneous formation of Pd nanoparticles at cathode I and AlOOH nanosheets at cathode Ⅱ on the surface of Al substrate. The resultant AlOOH nanosheet array was uniform and about 300-400 nm thick, and the highly dispersed Pd nanoparticles were also rather small with an average size of 8.4 nm. Hence, the as-obtained Pd-AlOOH/Al monolithic catalysts exhibited high specific surface area and large micro/meso-pore structure as compared to pristine Al honeycomb substrate, leading to excellent catalytic activity in total oxidation reaction of toluene.

关键词： palladium boehmite Al honeycomb nanosheet array toluene

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