A Dual-interfacial System with Well-defined Spatially Separated Redox-Sites for Boosting Photocatalytic Overall H2S Splitting

2021 ◽  
pp. 130201
Author(s):  
Meng Dan ◽  
Fan Wu ◽  
Jianglai Xiang ◽  
Yuehan Cao ◽  
Yunqian Zhong ◽  
...  
Keyword(s):  
Redox Sites

Polymer oxidation catalyst containing acidic functional groups

1981 ◽  
Vol 46 (5) ◽  
pp. 1237-1247
Author(s):  
Zdeněk Prokop ◽  
Karel Setínek
Keyword(s):  
Functional Groups ◽  
Elevated Temperatures ◽  
Redox Properties ◽  
Oxidation Catalyst ◽  
Carbon Clusters ◽  
Oxidation Activity ◽  
Redox Sites ◽  
Styrene Divinylbenzene ◽  
Proportional Decrease ◽  
Polymer Oxidation

The catalyst containing redox sites in addition to acid functional groups was prepared by sulphonation of a macroporous chloromethylated styrene-divinylbenzene copolymer with concentrated sulphuric acid at elevated temperatures. Its activity was tested for the oxidation of 2-propanol by molecular oxygen at 120 °C and was found to be comparable to that of the iridium on carbon catalyst.Neutralisation of acid functional groups by alkali metal led to proportional decrease in the oxidation activity. The results of EPR spectroscopic study of these catalysts show that the redox properties of the polymer are caused by carbon clusters which are capable of electron exchange.

Separated Redox Sites Strategies for Engineering High-Efficient Photocatalysts: Pagoda-Like In2O3/CuO Heteroepitaxial Structure Coated by N Doped C Layer

2021 ◽  
Author(s):  
Yun Yang ◽  
Liming Sun ◽  
Wenwen Zhan ◽  
Xiao-Jun Wang ◽  
Xi-Guang Han
Keyword(s):  
Effective Activation ◽  
Heteroepitaxial Structure ◽  
Redox Sites ◽  
High Efficient ◽  
And Migration

In order to prepare efficient photocatalysts, it is necessary to consider not only the generation, separation and migration of photo-generated carriers, but also the effective activation of reactants and the...

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