Highly Efficient Photoelectrocatalytic Reduction of CO(2) to Methanol by a p-n Heterojunction CeO(2)/CuO/Cu Catalyst.
Highly Efficient Photoelectrocatalytic Reduction of CO(2) to Methanol by a p-n Heterojunction CeO(2)/CuO/Cu Catalyst.
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潘异质结 CeO2/CuO/Cu 催化剂高效光电催化还原 CO2 为甲醇
DOI：
10.1007/s40820-019-0354-1
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发表时间：
2020-01-09
影响因子：
26.6
通讯作者：
Li P
中科院分区：
文献类型：
--
作者：
Pan Z;Han E;Zheng J;Lu J;Wang X;Yin Y;Waterhouse GIN;Wang X;Li P
花状 CeO2 纳米颗粒增强了 CuO 纳米颗粒/Cu 的性能。该系统受益于 p 型 CuO 和 n 型 CeO2 之间的异质结。研究了目标催化剂上CO2选择性还原为甲醇的情况。本文的在线版本 (10.1007/s40820-019-0354-1) 包含补充材料，可供授权用户使用。光电催化将二氧化碳还原为燃料对于减少人为二氧化碳排放以及减少我们对化石燃料能源的依赖具有巨大潜力。在此，我们报告成功开发了一种新型光电催化催化剂，用于选择性将二氧化碳还原为甲醇，该催化剂包括用花状氧化铈纳米粒子（CeO2 NPs）（一种n型半导体）和氧化铜纳米粒子（CuO NPs）（一种p型半导体）改性的铜催化剂。在可见光照射下施加− 1.0 V（vs SCE）电势时，CeO2 NPs/CuO NPs/Cu催化剂以3.44 μmol cm−2 h−1的速率产生甲醇，大约是CuO NPs/Cu催化剂（0.67 μmol cm−2 h−1）的五倍。当花状CeO2 NPs沉积在CuO NPs/Cu催化剂上时，由于光生电子从CuO导带到CeO2导带的协同转移，载流子浓度增加了约108倍，这增强了CeO2 NPs上的光催化和光电催化CO2还原。因此，光生电子和空穴在 CeO2 和 CuO 组分之间形成的 p-n 异质结上的轻松迁移对于 CeO2 NPs/CuO NPs/Cu 催化剂优异的光诱导 CO2 还原性能至关重要。结果鼓励了复合半导体电极在二氧化碳减排中的更广泛应用。本文的在线版本 (10.1007/s40820-019-0354-1) 包含补充材料，可供授权用户使用。
Flower-like CeO2 nanoparticles enhance the performance of CuO nanoparticle/Cu. The system benefits from the heterojunction between p-type CuO and n-type CeO2. The selective reduction of CO2 to methanol on the target catalyst is studied. The online version of this article (10.1007/s40820-019-0354-1) contains supplementary material, which is available to authorized users. Photoelectrocatalytic reduction of CO2 to fuels has great potential for reducing anthropogenic CO2 emissions and also lessening our dependence on fossil fuel energy. Herein, we report the successful development of a novel photoelectrocatalytic catalyst for the selective reduction of CO2 to methanol, comprising a copper catalyst modified with flower-like cerium oxide nanoparticles (CeO2 NPs) (a n-type semiconductor) and copper oxide nanoparticles (CuO NPs) (a p-type semiconductor). At an applied potential of − 1.0 V (vs SCE) under visible light irradiation, the CeO2 NPs/CuO NPs/Cu catalyst yielded methanol at a rate of 3.44 μmol cm−2 h−1, which was approximately five times higher than that of a CuO NPs/Cu catalyst (0.67 μmol cm−2 h−1). The carrier concentration increased by ~ 108 times when the flower-like CeO2 NPs were deposited on the CuO NPs/Cu catalyst, due to synergistic transfer of photoexcited electrons from the conduction band of CuO to that of CeO2, which enhanced both photocatalytic and photoelectrocatalytic CO2 reduction on the CeO2 NPs. The facile migration of photoexcited electrons and holes across the p–n heterojunction that formed between the CeO2 and CuO components was thus critical to excellent light-induced CO2 reduction properties of the CeO2 NPs/CuO NPs/Cu catalyst. Results encourage the wider application of composite semiconductor electrodes in carbon dioxide reduction. The online version of this article (10.1007/s40820-019-0354-1) contains supplementary material, which is available to authorized users.
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影响因子：
4.5
作者：
FUJIHIRA, M;HIRATA, Y;SUGA, K
通讯作者：
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影响因子：
3
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影响因子：
22.1
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蠕虫状 InP/TiO2 NTs 异质结具有无与伦比的能带光增强电催化 CO2 还原为甲醇
影响因子：
15.1
作者：
Li, Peigiang;Sui, Xiaona;Yin, Hongzong
通讯作者：
Yin, Hongzong