Co2 Reduction
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2021 ◽  
Vol 155 (11) ◽  
pp. 114702
Stephen E. Weitzner ◽  
Sneha A. Akhade ◽  
Ajay R. Kashi ◽  
Zhen Qi ◽  
Aya K. Buckley ◽  

Fengliang Wang ◽  
Gan Qian ◽  
Xiang-Peng Kong ◽  
Xin Zhao ◽  
Tingting Hou ◽  

Eric W. Lees ◽  
Benjamin A. W. Mowbray ◽  
Fraser G. L. Parlane ◽  
Curtis P. Berlinguette

2021 ◽  
Vol 42 (12) ◽  
pp. 2306-2312
Min Wang ◽  
Qi Xie ◽  
Huimin Chen ◽  
Guangbo Liu ◽  
Xuejing Cui ◽  

Catalysts ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1115
Lujia Ding ◽  
Qiutong Han ◽  
Hong Lu ◽  
Yong Yang ◽  
Gang Lu ◽  

Atomic valence state regulation is an advantageous approach for improving photocatalytic efficiency and product selectivity. However, it is difficult to precisely control the ratio of the different valence states on the surface and the relationship between the surface valence change and catalytic efficiency in the photocatalytic reaction process is unclear. Herein, CeVO4 ultrathin nanosheets were fabricated by one-step solvothermal method with ethanolamine (MEA) as the structure-directing agent. The ratio of the concentrations of intrinsic Ce4+ and Ce3+ ions is precisely modulated from 19.82:100 to 13.33:100 changed by the volume of MEA added without morphology modification. The photocatalytic efficiency increases as the concentrations of intrinsic Ce4+ and Ce3+ ions decrease and CV3 (prepared with 3 mL of MEA) shows the highest CO generation rate approximately 6 and 14 times larger than CV (prepared without MEA) and CV1 (prepared with 1 mL of MEA), respectively, in the photocatalytic CO2 reduction. Interestingly, about 6.8% photo-induced Ce4+ ions were generated on the surface of the catalysts during the photocatalytic CO2 reduction without any phase and morphology changes for CV3. The photocatalytic reaction mechanism is proposed considering the intrinsic and photo-induced Ce4+ ions to obtain efficient photocatalysts.

Chang Liu ◽  
Jun Gong ◽  
Zeyu Gao ◽  
Li Xiao ◽  
Gongwei Wang ◽  

2021 ◽  
Vol 13 (18) ◽  
pp. 10280
Seunghyun Son ◽  
Dongjoo Lee ◽  
Jinhyuk Oh ◽  
Sunkuk Kim

When using concrete to produce exterior finishing panels of free-form building structures, different panel shapes make it difficult to reuse the forms. This results in increased formwork cost as well as a significant amount of embodied CO2 (ECO2) generation. Through years of research, we have developed a free-form panel (FCP) production technique engaging the 3D plastering technique (3DPT) without using conventional plywood forms. When 3DPT becomes available for free-form building projects, a great deal of ECO2 reduction effects is expected in addition to reduced time and cost in FCP production. The purpose of this study is to prove this by analyzing ECO2 reduction effects achieved through sustainable FCP production using 3DPT. The study involved project case selection, calculation of resources consumed for conventional plywood forms, and analysis of the reduction effects. As a result, it was demonstrated from the case project that 1196 tons of CO2 were reduced using 3DPT, accounting for approximately 99% of the amount produced from conventional plywood forms (CPF). The study findings will be used as a basic reference for sustainable production of FCPs ensuring speed and precision in production as well as innovative ECO2 reduction effects.

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