Dinuclear uranium(vi) salen coordination compound: an efficient visible-light-active catalyst for selective reduction of CO2 to methanol

2020 ◽  
Vol 49 (47) ◽  
pp. 17243-17251
Author(s):  
Mohammad Azam ◽  
Umesh Kumar ◽  
Joshua O. Olowoyo ◽  
Saud I. Al-Resayes ◽  
Agata Trzesowska-Kruszynska ◽  
...  
Keyword(s):  
Visible Light ◽  
Coordination Compound ◽  
Active Catalyst ◽  
Selective Reduction ◽  
Photocatalytic Reduction ◽  
Visible Light Active ◽  
Reduction Of Co2

The newly synthesized dinuclear uranyl salen coordination compound showed excellent photocatalytic reduction of CO2 to methanol.

scholarly journals Photocatalytic Reduction of CO2 to Methanol by Cu2O/TiO2 Heterojunctions

2021 ◽  
Vol 14 (1) ◽  
pp. 374
Author(s):  
S.-P. Cheng ◽  
L.-W. Wei ◽  
H.-Paul Wang
Keyword(s):  
Solar Energy ◽  
Visible Light ◽  
Uv Light ◽  
Light Exposure ◽  
Photocatalytic Reduction ◽  
Low Carbon ◽  
Mild Conditions ◽  
Photogenerated Electrons ◽  
Visible Light Active ◽  
Reduction Of Co2

The conversion of CO2 to low-carbon fuels using solar energy is considered an economically attractive and environmentally friendly route. The development of novel catalysts and the use of solar energy via photocatalysis are key to achieving the goal of chemically reducing CO2 under mild conditions. TiO2 is not very effective for the photocatalytic reduction of CO2 to low-carbon chemicals such as methanol (CH3OH). Thus, in this work, novel Cu2O/TiO2 heterojunctions that can effectively separate photogenerated electrons and holes were prepared for photocatalytic CO2-to-CH3OH. More visible light-active Cu2O in the Cu2O/TiO2 heterojunctions favors the formation of methanol under visible light irradiation. On the other hand, under UV-Vis irradiation for 6 h, the CH3OH yielded from the photocatalytic CO2-to-CH3OH by the Cu2O/TiO2 heterojunctions is 21.0–70.6 µmol/g-catalyst. In contrast, the yield of CH3OH decreases with an increase in the Cu2O fraction in the Cu2O/TiO2 heterojunctions. It seems that excess Cu2O in Cu2O/TiO2 heterojunctions may lead to less UV light exposure for the photocatalysts, and may decrease the conversion efficiency of CO2 to CH3OH.

scholarly journals Semiconducting Nanocrystalline Bismuth Oxychloride (BiOCl) for Photocatalytic Reduction of CO2

Catalysts ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 998
Author(s):  
Dalia Sánchez-Rodríguez ◽  
Alma Berenice Jasso-Salcedo ◽  
Niklas Hedin ◽  
Tamara L. Church ◽  
Aitor Aizpuru ◽  
...  
Keyword(s):  
Band Gap ◽  
Carbon Capture ◽  
Uv Light ◽  
Active Catalyst ◽  
Triethylene Glycol ◽  
Photocatalytic Reduction ◽  
Carbon Capture And Utilization ◽  
Reduction Of Co2 ◽  
A Minor ◽  
Band Gap Tuning

The reduction of CO2 is relevant for the production of compounds as part of the carbon capture and utilization research approaches. Thus, photocatalytic reduction of CO2 over a tailored BiOCl-based photocatalyst (BTEG) was tested under UV light (365 nm). BTEG was synthesized in the presence of triethylene glycol, which gave 4-nm crystallites, much smaller than the 30 nm crystallites of commercial BiOCl. Commercial BiOCl reduced CO2 mainly to methane with a minor fraction of ethanol, and was inactivated after 20 h. BTEG was a more active catalyst for CO2 photoreduction, producing approximately equal amounts of methane, methanol, and ethanol while consuming 0.38 µmol g−1 h−1 of CO2 before the experiment was stopped after 43 h, with the catalyst still active. The different products formed by the BTEG photocatalyst samples were tentatively ascribed to its greater content of {110} facets. Thus, in addition to band-gap tuning, the relative fractions of BiOCl facets had a key role in the effective photocatalytic reduction of CO2, and the BiOCl-based BTEG catalyst promoted the formation of important compounds as methanol and ethanol.

scholarly journals The solvent-driven formation of multi-morphological Ag–CeO2 plasmonic photocatalysts with enhanced visible-light photocatalytic reduction of CO2

RSC Advances ◽  
2018 ◽  
Vol 8 (71) ◽  
pp. 40731-40739 ◽  
Author(s):  
Wei Cai ◽  
Yunpeng Shi ◽  
Yunxia Zhao ◽  
Mindong Chen ◽  
Qin Zhong ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Reduction ◽  
Composite Photocatalyst ◽  
Reduction Of Co2 ◽  
Visible Light Photocatalytic

The synthesized plasmonic Ag–Ce composite photocatalyst exhibited excellent VLPCR performance caused by SPR effects.

Construction of highly efficient Z-scheme ZnxCd1-xS/Au@g-C3N4 ternary heterojunction composite for visible-light-driven photocatalytic reduction of CO2 to solar fuel

2021 ◽  
Vol 282 ◽  
pp. 119600
Author(s):  
Puttaswamy Madhusudan ◽  
Run Shi ◽  
Shengling Xiang ◽  
Mengtian Jin ◽  
Bananakere Nanjegowda Chandrashekar ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Reduction ◽  
Solar Fuel ◽  
Highly Efficient ◽  
Visible Light Driven ◽  
Reduction Of Co2

An anion exchange approach to Bi2WO6 hollow microspheres with efficient visible light photocatalytic reduction of CO2 to methanol

2012 ◽  
Vol 48 (78) ◽  
pp. 9729 ◽  
Author(s):  
Hefeng Cheng ◽  
Baibiao Huang ◽  
Yuanyuan Liu ◽  
Zeyan Wang ◽  
Xiaoyan Qin ◽  
...  
Keyword(s):  
Visible Light ◽  
Anion Exchange ◽  
Hollow Microspheres ◽  
Photocatalytic Reduction ◽  
Reduction Of Co2 ◽  
Visible Light Photocatalytic
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