Impacts of interfacial charge transfer on nanoparticle electrocatalytic activity towards oxygen reduction

2017 ◽  
Vol 19 (14) ◽  
pp. 9336-9348 ◽  
Author(s):  
Yi Peng ◽  
Bingzhang Lu ◽  
Nan Wang ◽  
Ligui Li ◽  
Shaowei Chen
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Oxygen Reduction ◽  
Significant Role ◽  
Electrocatalytic Activity ◽  
Oxygen Species ◽  
Interfacial Electron Transfer ◽  
Effective Mechanism ◽  
Electronic Interactions ◽  
Interfacial Charge

Interfacial electron transfer within platinum and non-platinum-based nanocatalysts plays a significant role in the manipulation of the electronic interactions between oxygen species and the catalyst surfaces, which may be exploited as an effective mechanism to enhance and optimize the activity towards oxygen reduction.

Interfacial electron transfer of heterostructured MIL-88A/Ni(OH)2 enhances the oxygen evolution reaction in alkaline solutions

2020 ◽  
Vol 8 (6) ◽  
pp. 3311-3321 ◽  
Author(s):  
Zhengxin Qian ◽  
Keke Wang ◽  
Kexin Shi ◽  
Zhaoqin Fu ◽  
Zequn Mai ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Alkaline Solutions ◽  
Interfacial Electron Transfer ◽  
Interfacial Charge Transfer ◽  
Interfacial Charge

A facile strategy is developed to create a MIL-88A/Ni(OH)2 heterostructure, where the interfacial charge transfer significantly boosted the OER performance.

Heterostructured composites consisting of In2O3 nanorods and reduced graphene oxide with enhanced interfacial electron transfer and photocatalytic performance

2014 ◽  
Vol 2 (47) ◽  
pp. 20118-20125 ◽  
Author(s):  
Hui Huang ◽  
Zongkuan Yue ◽  
Gang Li ◽  
Xiaomei Wang ◽  
Jie Huang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Graphene Oxide ◽  
Charge Transfer ◽  
Visible Light ◽  
Reduced Graphene Oxide ◽  
Photocatalytic Performance ◽  
Interfacial Electron Transfer ◽  
Reduced Graphene ◽  
Oxide Composites ◽  
Interfacial Charge

UV-assisted fabrication of In2O3 nanorods/reduced graphene oxide composites with enhanced interfacial charge transfer and photocatalytic performance under visible light.

scholarly journals Photo-induced direct interfacial charge transfer at TiO2 modified with hexacyanoferrate(iii)

2018 ◽  
Vol 17 (9) ◽  
pp. 1153-1156 ◽  
Author(s):  
Tomomi Tatebe ◽  
Takashi Harada ◽  
Kazuhide Kamiya ◽  
Shuji Nakanishi
Keyword(s):  
Electron Transfer ◽  
Titanium Dioxide ◽  
Charge Transfer ◽  
Transfer Reactions ◽  
Interfacial Charge Transfer ◽  
Electron Transfer Reactions ◽  
Photo Induced Electron Transfer ◽  
Interfacial Charge

Photo-induced electron-transfer reactions occurring at the interface between titanium dioxide modified with hexacyanoferrate(iii) (Fe(iii)-CN-TiO2) were characterized.

Promoting interfacial charge transfer by B/N co-doping enable efficient ORR catalysis of carbon encapsulated Fe2N

2022 ◽  
Author(s):  
Zhi Xie ◽  
Qiaoling Li ◽  
Xingkai Peng ◽  
Xuewei Wang ◽  
Lingli Guo ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
High Efficiency ◽  
Reduction Reaction ◽  
Carbon Shell ◽  
Co Doping ◽  
Interfacial Charge ◽  
Electrochemical Catalysts

High efficiency and durability are two key targets for developing electrochemical catalysts for oxygen reduction reaction (ORR). Here, B/N co-doping porous carbon shell encapsulated Fe2N nanoparticles (NPs) was synthesized as...

scholarly journals Mn-Ni-Co-O Spinel Oxides towards Oxygen Reduction Reaction in Alkaline Medium: Mn0.5Ni0.5Co2O4/C Synergism and Cooperation

Catalysts ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1059
Author(s):  
Thabo Matthews ◽  
Tarekegn Heliso Dolla ◽  
Sandile Surprise Gwebu ◽  
Tebogo Abigail Mashola ◽  
Lihle Tshepiso Dlamini ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Surface Area ◽  
Electrocatalytic Activity ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
Electrocatalytic Oxygen Reduction ◽  
Spinel Oxides ◽  
A Current

Mn-doped spinel oxides MnxNi1−xCo2O4 (x = 0, 0.3, 0.5, 0.7, and 1) were synthesized using the citric acid-assisted sol–gel method. The Mn0.5Ni0.5Co2O4 (x = 0.5) supported on carbon nanosheets, Mn0.5Ni0.5Co2O4/C, was also prepared using the same method employing NaCl and glucose as a template and carbon source, respectively, followed by pyrolysis under an inert atmosphere. The electrocatalytic oxygen reduction reaction (ORR) activity was performed in alkaline media. Cyclic voltammetry (CV) was used to investigate the oxygen reduction performance of MnxNi1−xCo2O4 (x = 0, 0.3, 0.5, 0.7, and 1), and Mn0.5Ni0.5Co2O4 was found to be the best-performing electrocatalyst. Upon supporting the Mn0.5Ni0.5Co2O4 on a carbon sheet, the electrocatalytic activity was significantly enhanced owing to its large surface area and the improved charge transfer brought about by the carbon support. Rotating disk electrode studies show that the ORR electrocatalytic activity of Mn0.5Ni0.5Co2O4/C proceeds via a four-electron pathway. Mn0.5Ni0.5Co2O4/C was found to possess E1/2(V) = 0.856, a current density of 5.54 mA cm−2, and a current loss of approximately 0.11% after 405 voltammetric scan cycles. This study suggests that the interesting electrocatalytic performance of multimetallic transition metal oxides can be further enhanced by supporting them on conductive carbon materials, which improve charge transfer and provide a more active surface area.

Charge Carrier Transfer in Ta3N5 Photoanodes Prepared by Different Methods for Solar Water Splitting

2016 ◽  
Vol 69 (6) ◽  
pp. 631 ◽  
Author(s):  
Mingxue Li ◽  
Wenjun Luo ◽  
Liheng Yang ◽  
Xin Zhao ◽  
Zhigang Zou
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Water Splitting ◽  
Charge Separation ◽  
Preparation Method ◽  
Separation Efficiency ◽  
Interfacial Charge Transfer ◽  
Splitting Property ◽  
Charge Separation Efficiency ◽  
Interfacial Charge

The preparation method of a photoanode can affect its water splitting property. Here, as examples, we prepared Ta3N5 photoanodes by an electrophoresis deposition (EPD) method and an oxidation and nitridation of Ta foil (ONTF) method. The light harvest, interfacial charge transfer, and charge separation of the two Ta3N5 photoanodes were analysed to gain insight into the role of the preparation method on the water splitting property. The results suggested that the ONTF-prepared Ta3N5 showed a higher solar energy conversion efficiency, arising from its better interfacial charge transfer efficiency and higher charge separation efficiency. The higher charge separation efficiency was mainly attributed to good electron transfer, and the inter-particle connectivity was key for the electron transfer in the photoanodes. Especially, the dense, small particle structure of ONTF-prepared Ta3N5 was beneficial for increasing the connectivity between inter-particles. This comparison of preparation methods can be used as a reference for future photoanode preparation to improve the water splitting property of photoelectrochemical cells.

TiO2 as an interfacial-charge-transfer-bridge to construct eosin Y-mediated direct Z-scheme electron transfer over a Co9S8 quantum dot/TiO2 photocatalyst

2020 ◽  
Vol 10 (15) ◽  
pp. 5267-5280 ◽  
Author(s):  
Xuqiang Hao ◽  
Qingjie Guo ◽  
Mei Li ◽  
Zhiliang Jin ◽  
Ying Wang
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Quantum Dot ◽  
Eosin Y ◽  
Tio2 Photocatalyst ◽  
Interfacial Charge Transfer ◽  
Photocatalytic System ◽  
Interfacial Charge

A novel eosin Y-mediated Z-scheme Co9S8 QDs/TiO2 photocatalytic system was constructed and a high AQE of 37.4% is obtained at 470 nm for 20%Co9S8/TiO2 heterojunction.

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