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Photocatalytic and Photoelectrochemical Carbon Dioxide Reductions toward Value-Added Multicarbon Products
ACS ES&T Engineering ( IF 7.4 ) Pub Date : 2021-11-19 , DOI: 10.1021/acsestengg.1c00336 Haijiao Lu 1 , Zhiliang Wang 1 , Lianzhou Wang 1
ACS ES&T Engineering ( IF 7.4 ) Pub Date : 2021-11-19 , DOI: 10.1021/acsestengg.1c00336 Haijiao Lu 1 , Zhiliang Wang 1 , Lianzhou Wang 1
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Developing new energy sources is of critical significance to satisfy the growing energy demand and also reduce the emissions of carbon dioxide (CO2) gas. The conversion of CO2 into value-added products is a promising strategy to achieve two aims at once, both mitigating the global warming issue and filling the huge gap between energy demand and sustainable supply. Photocatalytic (PC) and photoelectrochemical (PEC) CO2 reduction reactions (CO2RRs), which utilize clean and renewable solar energy to access value-added products, are two strategies of great practical value. Multicarbon products have sparked great interest in recent years, owing to their higher energy densities and larger market sizes than C1 species. However, the production of multicarbon products through PC and PEC CO2RRs is retarded by low activity and selectivity. In this work, the fundamentals of PC and PEC CO2RRs are first briefly recalled. Then, the main strategies toward high CO2RR activity and selectivity for multicarbon products (C2 and C3 species, instead of C1 species, as major products or even the only product) are discussed, from the points of photocatalysts, electrons, and protons sources, applied bias, and reaction configuration. Finally, perspectives for future challenges and directions are presented.
中文翻译：
光催化和光电化学二氧化碳还原对增值多碳产品
开发新能源对于满足日益增长的能源需求，减少二氧化碳（CO 2）气体的排放具有重要意义。将 CO 2转化为增值产品是一项很有前景的战略，可以同时实现两个目标，既缓解全球变暖问题，又填补能源需求与可持续供应之间的巨大差距。光催化（PC）和光电化学（PEC）CO 2还原反应（CO 2 RRs）利用清洁和可再生的太阳能获得增值产品，是两种具有重要实用价值的策略。近年来，多碳产品引起了极大的兴趣，因为它们比 C 1具有更高的能量密度和更大的市场规模物种。然而，通过 PC 和 PEC CO 2 RRs生产多碳产品受到低活性和选择性的阻碍。在这项工作中，首先简要回顾了 PC 和 PEC CO 2 RR 的基本原理。然后，从光催化剂、电子、_和质子源、施加的偏压和反应配置。最后，提出了对未来挑战和方向的看法。
更新日期：2021-11-19
中文翻译：
光催化和光电化学二氧化碳还原对增值多碳产品
开发新能源对于满足日益增长的能源需求，减少二氧化碳（CO 2）气体的排放具有重要意义。将 CO 2转化为增值产品是一项很有前景的战略，可以同时实现两个目标，既缓解全球变暖问题，又填补能源需求与可持续供应之间的巨大差距。光催化（PC）和光电化学（PEC）CO 2还原反应（CO 2 RRs）利用清洁和可再生的太阳能获得增值产品，是两种具有重要实用价值的策略。近年来，多碳产品引起了极大的兴趣，因为它们比 C 1具有更高的能量密度和更大的市场规模物种。然而，通过 PC 和 PEC CO 2 RRs生产多碳产品受到低活性和选择性的阻碍。在这项工作中，首先简要回顾了 PC 和 PEC CO 2 RR 的基本原理。然后，从光催化剂、电子、_和质子源、施加的偏压和反应配置。最后，提出了对未来挑战和方向的看法。
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