Photochemical Construction of Nitrogen-Containing Nanocarbons for Carbon Dioxide Photoreduction

ACS Catalysis ◽  
2020 ◽  
Vol 10 (21) ◽  
pp. 12706-12715
Author(s):  
Pengju Yang ◽  
Ruirui Wang ◽  
Hangyu Zhuzhang ◽  
Maria-Magdalena Titirici ◽  
Xinchen Wang
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Photoreduction

Efficient carbon dioxide photoreduction by novel metal complexes and its reaction mechanisms

1995 ◽  
Vol 36 (6-9) ◽  
pp. 621-624 ◽  
Author(s):  
Hisao Hori ◽  
Osamu Ishitani ◽  
Kazuhide Koike ◽  
Frank P.A. Johnson ◽  
Takashi Ibusuki
Keyword(s):  
Carbon Dioxide ◽  
Metal Complexes ◽  
Reaction Mechanisms ◽  
Carbon Dioxide Photoreduction

scholarly journals Solar Fuels by Heterogeneous Photocatalysis: From Understanding Chemical Bases to Process Development

2018 ◽  
Vol 2 (3) ◽  
pp. 42 ◽  
Author(s):  
Alberto Olivo ◽  
Danny Zanardo ◽  
Elena Ghedini ◽  
Federica Menegazzo ◽  
Michela Signoretto
Keyword(s):  
Carbon Dioxide ◽  
Process Development ◽  
High Energy ◽  
Heterogeneous Photocatalysis ◽  
Catalyst Design ◽  
Solar Fuels ◽  
Reaction Pathways ◽  
Mechanistic Insight ◽  
Carbon Dioxide Photoreduction ◽  
Photocatalytic Reactions

The development of sustainable yet efficient technologies to store solar light into high energy molecules, such as hydrocarbons and hydrogen, is a pivotal challenge in 21st century society. In the field of photocatalysis, a wide variety of chemical routes can be pursued to obtain solar fuels but the two most promising are carbon dioxide photoreduction and photoreforming of biomass-derived substrates. Despite their great potentialities, these technologies still need to be improved to represent a reliable alternative to traditional fuels, in terms of both catalyst design and photoreactor engineering. This review highlights the chemical fundamentals of different photocatalytic reactions for solar fuels production and provides a mechanistic insight on proposed reaction pathways. Also, possible cutting-edge strategies to obtain solar fuels are reported, focusing on how the chemical bases of the investigated reaction affect experimental choices.

Crystallographic facet heterojunction of MIL-125-NH2(Ti) for carbon dioxide photoreduction

2021 ◽  
pp. 120524
Author(s):  
Xiao-Mei Cheng ◽  
Yuming Gu ◽  
Xiao-Yu Zhang ◽  
Xiao-Yao Dao ◽  
Shi-Qing Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Photoreduction

scholarly journals Catalytic Activity of Ni1-xLi2xWO4 Particles for Carbon Dioxide Photoreduction

Catalysts ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 467 ◽  
Author(s):  
Jongmin Shin ◽  
Jeong Yeon Do ◽  
Raeyeong Kim ◽  
Namgyu Son ◽  
No-Kuk Park ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Catalytic Activity ◽  
Structural Defects ◽  
Co2 Conversion ◽  
Initial Activity ◽  
Co2 Gas ◽  
Conversion Reaction ◽  
Carbon Dioxide Photoreduction ◽  
New Type ◽  
Structural Imbalance

This study introduces NiWO4 as a main photocatalyst, where the Ni component promotes methanation to generate a WO3-based catalyst, as a new type of catalyst that promotes the photoreduction of carbon dioxide by slowing the recombination of electrons and holes. The bandgap of NiWO4 is 2.74 eV, which was expected to improve the initial activity for the photoreduction of carbon dioxide. However, fast recombination between the holes and electrons was also expected. To overcome this problem, attempts were made to induce structural defects by partially replacing the Ni2+ ions in NiWO4 with Li+. The resulting CO2 conversion reaction was greatly enhanced with the Ni1-xLi2xWO4 catalysts containing Li+, compared to that of the pure NiWO4 catalysts. Notably, the total amount of CO and CH4 produced with the Ni0.8Li0.4WO4 catalyst was 411.6 nmol g−1. It is believed that the insertion of Li+ ions into the NiWO4 skeleton results in lattice defects due to charge and structural imbalance, which play a role in the capture of CO2 gas or excited electrons, thereby inhibiting recombination between the electrons and holes in the Ni1-xLi2xWO4 particles.

Enhancing photocatalytic activity of defective titania for carbon dioxide photoreduction via surface-functionalization

2021 ◽  
Author(s):  
Lina Zhang ◽  
Qianyu Zhao ◽  
Lu Shen ◽  
Qiuye Li ◽  
Taifeng Liu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Adsorption Capacity ◽  
Surface Functionalization ◽  
Ammonium Fluoride ◽  
Hydrophilic Surface ◽  
Carbon Dioxide Photoreduction

The hydrophilic surface of defective titanium dioxide lowers its adsorption capacity towards CO2 molecules. To get rid of this drawback, we conducted surface-functionalization of defective titania by ammonium fluoride in...

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