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Silver-Based Plasmonic Catalysts for Carbon Dioxide Reduction
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-01-22 , DOI: 10.1021/acssuschemeng.9b06146 Iker García-García 1 , Emma C. Lovell 2 , Roong Jien Wong 2, 3 , V. Laura Barrio 1 , Jason Scott 2 , José F. Cambra 1 , Rose Amal 2
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-01-22 , DOI: 10.1021/acssuschemeng.9b06146 Iker García-García 1 , Emma C. Lovell 2 , Roong Jien Wong 2, 3 , V. Laura Barrio 1 , Jason Scott 2 , José F. Cambra 1 , Rose Amal 2
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Light-enhanced valorization of CO2 provides a potentially useful pathway to offsetting carbon emissions to the atmosphere. Ni, a thermally active metal for the methanation of CO2, was coupled with Ag, a metal that exhibits a surface plasmon resonance effect in the visible light region, with the intention of exploiting the catalytic CO2 conversion by Ni and light enhancement from Ag. The catalytic metals were loaded onto an insulating silica support and exposed to 405 nm laser light during the reaction. The impact of the Ni–Ag bimetallic interaction intimacy on the influence of the light illumination on CO2 conversion and CH4 selectivity was examined. Sequentially impregnating Ni and Ag (regardless of the order) provided a stronger bimetallic interaction relative to the coimpregnation procedure. The coimpregnated sample, with the weakest metallic interaction, exhibited the highest CH4 productivity in the dark, while irradiating the catalyst at 405 nm had minimal impact on its performance. The poor photoeffect was attributed to the lack of interaction between Ni and Ag in conjunction with the low catalytic activity of Ag. The sequentially impregnated samples, which facilitated a stronger bimetallic interaction, exhibited an increase in CO2 conversion when illuminated, with the greatest improvement produced when Ni was loaded first. The increase in CO2 conversion under laser irradiation was attributed to the contribution of the Ag photoresponse. Comparing the three bimetallic catalysts clearly revealed that Ni–Ag/SiO2 with the strongest bimetallic interaction delivered the highest photoenhancement in terms of both CO2 conversion and CH4 selectivity.
中文翻译：
用于还原二氧化碳的银基等离子催化剂
光增强的CO 2增价提供了抵消碳向大气排放的潜在有用途径。Ni是用于CO 2甲烷化的热活性金属，与Ag结合，Ag在可见光区域表现出表面等离子体共振效应，目的是利用Ni催化CO 2转化并从Ag中增强光。 。在反应过程中，将催化金属加载到绝缘的二氧化硅载体上，并暴露于405 nm激光中。Ni-Ag双金属相互作用的亲和力对光照对CO 2转化和CH 4的影响检查了选择性。相对于共浸渍程序，顺序浸渍Ni和Ag（不管顺序如何）提供了更强的双金属相互作用。具有最弱金属相互作用的共浸渍样品在黑暗中表现出最高的CH 4生产率，而在405 nm处照射催化剂对其性能的影响最小。不良的光效应归因于Ni和Ag之间缺乏相互作用以及Ag的低催化活性。顺序浸渍的样品促进了更强的双金属相互作用，在照亮时表现出CO 2转化率的增加，而当首先加载Ni时，产生的改进最大。CO 2的增加激光辐照下的转化归因于Ag光响应的贡献。比较这三种双金属催化剂，可以清楚地看出，具有最强双金属相互作用的Ni-Ag / SiO 2在CO 2转化率和CH 4选择性方面都具有最高的光增强作用。
更新日期：2020-01-23
中文翻译：
用于还原二氧化碳的银基等离子催化剂
光增强的CO 2增价提供了抵消碳向大气排放的潜在有用途径。Ni是用于CO 2甲烷化的热活性金属，与Ag结合，Ag在可见光区域表现出表面等离子体共振效应，目的是利用Ni催化CO 2转化并从Ag中增强光。 。在反应过程中，将催化金属加载到绝缘的二氧化硅载体上，并暴露于405 nm激光中。Ni-Ag双金属相互作用的亲和力对光照对CO 2转化和CH 4的影响检查了选择性。相对于共浸渍程序，顺序浸渍Ni和Ag（不管顺序如何）提供了更强的双金属相互作用。具有最弱金属相互作用的共浸渍样品在黑暗中表现出最高的CH 4生产率，而在405 nm处照射催化剂对其性能的影响最小。不良的光效应归因于Ni和Ag之间缺乏相互作用以及Ag的低催化活性。顺序浸渍的样品促进了更强的双金属相互作用，在照亮时表现出CO 2转化率的增加，而当首先加载Ni时，产生的改进最大。CO 2的增加激光辐照下的转化归因于Ag光响应的贡献。比较这三种双金属催化剂，可以清楚地看出，具有最强双金属相互作用的Ni-Ag / SiO 2在CO 2转化率和CH 4选择性方面都具有最高的光增强作用。
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