Enhanced electrocatalytic activity of a layered triple hydroxide (LTH) by modulating the electronic structure and active sites for efficient and stable urea electrolysis

2022 ◽  
Author(s):  
Komal Patil ◽  
Pravin Babar ◽  
Hyojung Bae ◽  
Eunae Jo ◽  
Jun Sung Jang ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Electrocatalytic Activity ◽  
Active Sites ◽  
Nickel Foam ◽  
Nanosheet Arrays ◽  
Urea Electrolysis

NiCoFe-LTH nanosheet arrays on a nickel foam substrate act as an efficient and stable electrocatalyst for urea electrolysis, which needs only 1.49 V for 10 mA cm−2.

Addressable surface engineering for N-doped WS2 nanosheet arrays with abundant active sites and the optimal local electronic structure for enhanced hydrogen evolution reaction

Nanoscale ◽  
2020 ◽  
Vol 12 (44) ◽  
pp. 22541-22550
Author(s):  
Haiqing Wang ◽  
Zhongfei Xu ◽  
Zengfu Zhang ◽  
Shuxian Hu ◽  
Mingjun Ma ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Surface Engineering ◽  
Nanosheet Arrays ◽  
Local Electronic Structure

Engineering an addressable surface endows N doped WS2 nanosheet arrays with abundant active sites and an optimal local electronic structure for enhanced hydrogen evolution reaction.

scholarly journals Fabrication of porous NiMn2O4 nanosheet arrays on nickel foam as an advanced sensor material for non-enzymatic glucose detection

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Jie Zhang ◽  
Yudong Sun ◽  
Xianchun Li ◽  
Jiasheng Xu
Keyword(s):  
Correlation Coefficient ◽  
Active Sites ◽  
High Performance ◽  
Glucose Sensor ◽  
Nickel Foam ◽  
Glucose Detection ◽  
Transport Pathways ◽  
Sensor Material ◽  
Sensor Electrode ◽  
Nanosheet Arrays

AbstractIn this work, porous NiMn2O4 nanosheet arrays on nickel foam (NiMn2O4 NSs@NF) was successfully fabricated by a simple hydrothermal step followed by a heat treatment. Porous NiMn2O4 NSs@NF is directly used as a sensor electrode for electrochemical detecting glucose. The NiMn2O4 nanosheet arrays are uniformly grown and packed on nickel foam to forming sensor electrode. The porous NiMn2O4 NSs@NF electrode not only provides the abundant accessible active sites and the effective ion-transport pathways, but also offers the efficient electron transport pathways for the electrochemical catalytic reaction by the high conductive nickel foam. This synergy effect endows porous NiMn2O4 NSs@NF with excellent electrochemical behaviors for glucose detection. The electrochemical measurements are used to investigate the performances of glucose detection. Porous NiMn2O4 NSs@NF for detecting glucose exhibits the high sensitivity of 12.2 mA mM−1 cm−2 at the window concentrations of 0.99–67.30 μM (correlation coefficient = 0.9982) and 12.3 mA mM−1 cm−2 at the window concentrations of 0.115–0.661 mM (correlation coefficient = 0.9908). In addition, porous NiMn2O4 NSs@NF also exhibits a fast response of 2 s and a low LOD of 0.24 µM. The combination of porous NiMn2O4 nanosheet arrays and nickel foam is a meaningful strategy to fabricate high performance non-enzymatic glucose sensor. These excellent properties reveal its potential application in the clinical detection of glucose.

A novel ligand with –NH2 and –COOH-decorated Co/Fe-based oxide for an efficient overall water splitting: dual modulation roles of active sites and local electronic structure

2020 ◽  
Vol 10 (18) ◽  
pp. 6266-6273
Author(s):  
Yalan Zhang ◽  
Zebin Yu ◽  
Ronghua Jiang ◽  
Jung Huang ◽  
Yanping Hou ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Water Splitting ◽  
Energy Demand ◽  
Active Sites ◽  
Electrode Materials ◽  
Global Energy ◽  
Overall Water Splitting ◽  
Local Electronic Structure ◽  
Electrochemical Water Splitting

Excellent electrochemical water splitting with remarkable durability can provide a solution to satisfy the increasing global energy demand in which the electrode materials play an important role.

Surface Physicochemical Treatment of Nickel Foam for Increasing Its Electrocatalytic Activity in Overall Water Splitting

2020 ◽  
Vol 11 (2) ◽  
pp. 458-466
Author(s):  
D. V. Fominski ◽  
V. N. Nevolin ◽  
R. I. Romanov ◽  
V. Yu. Fominski ◽  
O. V. Komleva ◽  
...  
Keyword(s):  
Water Splitting ◽  
Electrocatalytic Activity ◽  
Nickel Foam ◽  
Physicochemical Treatment ◽  
Overall Water Splitting

Metal-organic-framework derived hollow manganese nickel selenide spheres confined with nanosheets on nickel foam for hybrid supercapacitors

2021 ◽  
Author(s):  
Bahareh ameri ◽  
Akbar Mohammadi Zardkhoshoui ◽  
Saied Saeed Hosseiny Davarani
Keyword(s):  
Active Sites ◽  
Nickel Foam ◽  
Metal Organic Framework ◽  
High Surface ◽  
Metal Organic Frameworks ◽  
High Surface Area ◽  
Supercapacitive Performance ◽  
Hybrid Supercapacitors ◽  
Porous Networks ◽  
Metal Organic

Metal-organic frameworks (MOFs) derived nanoarchitectures have special features, such as high surface area (SA), abundant active sites, exclusive porous networks, and remarkable supercapacitive performance when compared to traditional nanoarchitectures. Herein,...

An efficient CoS2/CoSe2 hybrid catalyst for electrocatalytic hydrogen evolution

2017 ◽  
Vol 5 (6) ◽  
pp. 2504-2507 ◽  
Author(s):  
Yaxiao Guo ◽  
Changshuai Shang ◽  
Erkang Wang
Keyword(s):  
Hydrogen Evolution ◽  
Electrocatalytic Activity ◽  
Active Sites ◽  
High Dispersion ◽  
Hybrid Catalyst

The CoS2/CoSe2 hybrid catalyst exhibits superior HER electrocatalytic activity as well as excellent electrochemical durability. CoSe2/DETA nanobelts not only afford an interconnected conducting network, but also demonstrate superior HER electrocatalytic activity. High dispersion and smaller CoS2 nanoparticles on the surface can provide abundant active sites for the HER.

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