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Visible-Light Photocatalytic CO2–N2–H2O to Urea with CdS@Bi2WO6
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2024-09-13 , DOI: 10.1021/acssuschemeng.4c05818 Yingshu Wang 1 , Yanan Liu 1 , Jiasi Gan 1 , Lu Hong 1 , Jinni Shen 2 , Zizhong Zhang 2 , Huidong Zheng 1 , Xuxu Wang 2
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2024-09-13 , DOI: 10.1021/acssuschemeng.4c05818 Yingshu Wang 1 , Yanan Liu 1 , Jiasi Gan 1 , Lu Hong 1 , Jinni Shen 2 , Zizhong Zhang 2 , Huidong Zheng 1 , Xuxu Wang 2
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Direct synthesis of urea from CO2, N2, and H2O through photocatalysis stands out as an effective solution to mitigate the over-release of CO2 and alleviate the high costs associated with nitrogen fertilizer production. The 20% CdS@Bi2WO6 sample exhibits optimal activity under visible light, achieving a urea yield of 10.0 μmol·g–1·h–1. The photocatalytic efficacy of this composite is attributed to its S-type heterojunction, which can significantly enhance the redox capacity and the efficiency of photogenerated charge separation compared to individual semiconductor components. CdS appears to be responsible for the photocatalytic reduction of N2 and urea synthesis, while Bi2WO6 is involved in the oxidation of H2O to form O2 and H+. It is suggested that urea is synthesized on the surface of CdS through two mechanisms: (I) the reaction between the activated intermediates of CO2 and N2 (mainly) and (II) the reaction of the in situ formed NH3 with the feed CO2.
中文翻译：
CdS@Bi2WO6 可见光光催化 CO2–N2–H2O 制尿素
通过光催化由CO 2 、N 2和H 2 O直接合成尿素是缓解CO 2过度释放并降低氮肥生产相关高成本的有效解决方案。 20% CdS@Bi 2 WO 6样品在可见光下表现出最佳活性，尿素收率达到10.0 μmol·g –1 ·h –1 。该复合材料的光催化功效归因于其S型异质结，与单个半导体组件相比，它可以显着增强氧化还原能力和光生电荷分离效率。 CdS似乎负责N 2的光催化还原和尿素合成，而Bi 2 WO 6参与H 2 O的氧化形成O 2和H + 。表明尿素在CdS表面合成通过两种机制：（I）CO 2和N 2的活化中间体（主要）之间的反应和（II）原位形成的NH 3与进料的反应二氧化碳2 。
更新日期：2024-09-13
中文翻译：
CdS@Bi2WO6 可见光光催化 CO2–N2–H2O 制尿素
通过光催化由CO 2 、N 2和H 2 O直接合成尿素是缓解CO 2过度释放并降低氮肥生产相关高成本的有效解决方案。 20% CdS@Bi 2 WO 6样品在可见光下表现出最佳活性，尿素收率达到10.0 μmol·g –1 ·h –1 。该复合材料的光催化功效归因于其S型异质结，与单个半导体组件相比，它可以显着增强氧化还原能力和光生电荷分离效率。 CdS似乎负责N 2的光催化还原和尿素合成，而Bi 2 WO 6参与H 2 O的氧化形成O 2和H + 。表明尿素在CdS表面合成通过两种机制：（I）CO 2和N 2的活化中间体（主要）之间的反应和（II）原位形成的NH 3与进料的反应二氧化碳2 。
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