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Controlled Synthesis of Cu0/Cu2O for Efficient Photothermal Catalytic Conversion of CO2 and H2O
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-01-18 , DOI: 10.1021/acssuschemeng.0c07702 Yuke Zheng 1 , Li Zhang 1 , Jian Guan 1 , Shuya Qian 1 , Zhaoxia Zhang 1, 2 , Chee Keong Ngaw 3 , Shaolong Wan 1, 2 , Shuai Wang 1, 2, 4 , Jingdong Lin 1, 2 , Yong Wang 5
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-01-18 , DOI: 10.1021/acssuschemeng.0c07702 Yuke Zheng 1 , Li Zhang 1 , Jian Guan 1 , Shuya Qian 1 , Zhaoxia Zhang 1, 2 , Chee Keong Ngaw 3 , Shaolong Wan 1, 2 , Shuai Wang 1, 2, 4 , Jingdong Lin 1, 2 , Yong Wang 5
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Sustainable conversion of CO2 and H2O to fuels using solar energy is highly attractive for clean fuel production. This work focuses on the one-pot synthesis of bifunctional Cu0/Cu2O catalysts for the photothermal conversion of CO2 and H2O. The experimental results show that the Cu0/Cu2O catalysts with a Cu0/Cu2O interface and a controllable ratio of Cu0 to Cu2O can be readily synthesized by tuning the ratio of the Cu precursor to the reductant (N2H4). The activity of the prepared Cu0/Cu2O catalysts in the photothermal catalytic conversion of CO2 and H2O is greatly influenced by the ratio of Cu0 to Cu2O and the reaction temperature. Cu0/Cu2O-R2, a catalyst prepared with a Cu precursor to N2H4 ratio of 1:2, exhibited the highest activity, i.e., 13.2 μmol g–1 h–1 of CO and 2.6 μmol g–1 h–1 of CH3OH at 383 K, which is much higher than those of Cu2O or Cu. Such enhanced performance is attributed to the formation of the interface between Cu0 and Cu2O, which is beneficial not only to photocatalysis but also to thermocatalytic CO2 hydrogenation. This work illustrates that a bifunctional catalyst with mixed metal oxidation states can be prepared by a one-pot method and is efficient for improving the performance of the directly coupled photothermal catalytic conversion of CO2 and H2O.
中文翻译：
高效合成CO 2和H 2 O的光热催化转化Cu 0 / Cu 2 O的控制合成
使用太阳能可持续地将CO 2和H 2 O转化为燃料对于清洁燃料生产非常有吸引力。此工作的重点是一锅合成的双功能的Cu 0 /铜2种O催化剂对CO的光热转换2和H 2 O的实验结果表明，在Cu 0 / Cu的2种O催化剂具有Cu 0 /铜2通过调整Cu前驱体与还原剂（N 2 H 4的比例）可以轻松合成O界面和可控的Cu 0与Cu 2 O比）。所制备的铜的活性0 /铜2中的CO的光热催化转化O催化剂2和H 2 O的大大由Cu的比的影响0与Cu 2 O和反应温度。Cu 0 / Cu 2 O-R2是一种以Cu前驱体与N 2 H 4比为1：2制备的催化剂，具有最高的活性，即13.2μmolg –1 h –1的CO和2.6μmolg –1 CH 3 OH在383 K下的h –1，远高于Cu 2O或Cu。这种增强的性能归因于Cu 0和Cu 2 O之间的界面的形成，这不仅有益于光催化，而且有益于热催化CO 2氢化。这项工作表明，具有混合金属氧化态的双功能催化剂可以通过一锅法制备，并且对于提高CO 2和H 2 O的直接耦合光热催化转化的性能非常有效。
更新日期：2021-02-01
中文翻译：
高效合成CO 2和H 2 O的光热催化转化Cu 0 / Cu 2 O的控制合成
使用太阳能可持续地将CO 2和H 2 O转化为燃料对于清洁燃料生产非常有吸引力。此工作的重点是一锅合成的双功能的Cu 0 /铜2种O催化剂对CO的光热转换2和H 2 O的实验结果表明，在Cu 0 / Cu的2种O催化剂具有Cu 0 /铜2通过调整Cu前驱体与还原剂（N 2 H 4的比例）可以轻松合成O界面和可控的Cu 0与Cu 2 O比）。所制备的铜的活性0 /铜2中的CO的光热催化转化O催化剂2和H 2 O的大大由Cu的比的影响0与Cu 2 O和反应温度。Cu 0 / Cu 2 O-R2是一种以Cu前驱体与N 2 H 4比为1：2制备的催化剂，具有最高的活性，即13.2μmolg –1 h –1的CO和2.6μmolg –1 CH 3 OH在383 K下的h –1，远高于Cu 2O或Cu。这种增强的性能归因于Cu 0和Cu 2 O之间的界面的形成，这不仅有益于光催化，而且有益于热催化CO 2氢化。这项工作表明，具有混合金属氧化态的双功能催化剂可以通过一锅法制备，并且对于提高CO 2和H 2 O的直接耦合光热催化转化的性能非常有效。
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