Collaboratively boosting charge transfer and CO2 chemisorption of SnO2 to selectively reduce CO2 to HCOOH

2021 ◽  
Author(s):  
Yusheng Yuan ◽  
Kai Sheng ◽  
Gui-lin Zhuang ◽  
Qiu-Yan Li ◽  
Cong Dou ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Oxygen Vacancies ◽  
Co2 Chemisorption ◽  
Favorable Structure

In this paper, we have facilely developed a SnO2-based electrocatalyst (SnO2-VO@N-C), which can combine together the favorable structure features of oxygen vacancies, porosity, and fully-coating with N-doped carbon layers (N-C)....

scholarly journals Density functional theory (DFT) investigation on the structure and photocatalysis properties of double-perovskite Gd1−xCaxBaCo2O5+δ (0 ≤ x ≤ 0.4)

RSC Advances ◽  
2019 ◽  
Vol 9 (35) ◽  
pp. 20161-20168
Author(s):  
Rong Zhang ◽  
Bo Xiang ◽  
Lei Xu ◽  
Liru Xia ◽  
Chunhua Lu
Keyword(s):  
Density Functional Theory ◽  
Charge Transfer ◽  
Density Functional ◽  
Oxygen Vacancies ◽  
Catalytic Efficiency ◽  
Double Perovskite ◽  
Functional Theory ◽  
Ca Doping ◽  
Valence States

Ca-doping affects the overall catalytic efficiency by adjusting the distribution of Co valence states and oxygen vacancies due to the strengthening of the charge transfer between O-2p and Co-3d orbitals upon substitution of Gd by Ca.

New insight into the roles of oxygen vacancies in hematite for solar water splitting

2017 ◽  
Vol 19 (2) ◽  
pp. 1074-1082 ◽  
Author(s):  
Xin Zhao ◽  
Jianyong Feng ◽  
Shi Chen ◽  
Yizhong Huang ◽  
Tze Chien Sum ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Water Splitting ◽  
Oxygen Vacancies ◽  
Active Surface ◽  
Transfer Efficiency ◽  
Surface Species ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Insight Into

Oxygen vacancies have different impacts on the charge transfer efficiency of pristine and Ti-doped hematite through active surface species.

Highly-dispersed TiO2 nanoparticles with abundant active sites induced by surfactants as a prominent substrate for SERS: charge transfer contribution

2017 ◽  
Vol 19 (33) ◽  
pp. 22302-22308 ◽  
Author(s):  
Libin Yang ◽  
Di Yin ◽  
Yu Shen ◽  
Ming Yang ◽  
Xiuling Li ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Tio2 Nanoparticles ◽  
Active Sites ◽  
Oxygen Vacancies ◽  
Surface Oxygen ◽  
Highly Dispersed

Highly-dispersed TiO2 with abundant surface oxygen vacancies was presented as an effective substrate for charge-transfer-induced SERS.

Coupling Effect of Au Nanoparticles with the Oxygen Vacancies of TiO2–x for Enhanced Charge Transfer

2020 ◽  
Vol 124 (43) ◽  
pp. 23823-23831
Author(s):  
Lina Lin ◽  
Xiaoyu Feng ◽  
Dengpeng Lan ◽  
Yuang Chen ◽  
Qilan Zhong ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Oxygen Vacancies ◽  
Au Nanoparticles ◽  
Coupling Effect

scholarly journals Ni/NiO Nanocomposites with Rich Oxygen Vacancies as High-Performance Catalysts for Nitrophenol Hydrogenation

Catalysts ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 944 ◽  
Author(s):  
Jun Zhou ◽  
Yue Zhang ◽  
Song Li ◽  
Jing Chen
Keyword(s):  
Charge Transfer ◽  
High Performance ◽  
Oxygen Vacancies ◽  
Vacancy Concentration ◽  
Hydrothermal Process ◽  
Oxygen Vacancy Concentration ◽  
Hydrogenation Catalysts ◽  
Hydrogen Flow ◽  
Sacrificial Agent

Heterogeneous catalysis often involves charge transfer between adsorbed molecules and the surface of catalyst, and thus their activity depends on the surface charge density. The efficiency of charge transfer could be optimized by adjusting the concentration of oxygen vacancies (Ov). In this work, hexagonal Ni(OH)2 nanoparticles were initially synthesized by a hydrothermal process using aluminum powder as the sacrificial agent, and were then converted into 2D Ni/NiO nanocomposites through in situ reduction in hydrogen flow. The oxygen vacancy concentration in the NiO nanosheet could be well-controlled by adjusting the reduction temperature. This resulted in strikingly high activities for hydrogenation of nitrophenol. The Ni/NiO nanocomposite could easily be recovered by a magnetic field for reuse. The present finding is beneficial for producing better hydrogenation catalysts and paves the way for the design of highly efficient catalysts.

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