Designing a 0D/1D S-Scheme Heterojunction of Cadmium Selenide and Polymeric Carbon Nitride for Photocatalytic Water Splitting and Carbon Dioxide Reduction.
Designing a 0D/1D S-Scheme Heterojunction of Cadmium Selenide and Polymeric Carbon Nitride for Photocatalytic Water Splitting and Carbon Dioxide Reduction.
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设计用于光催化水分解和二氧化碳还原的硒化镉和聚合碳氮化物的 0D/1D S 型异质结
DOI：
10.3390/molecules27196286
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发表时间：
2022-09-23
期刊：
影响因子：
--
通讯作者：
Zheng Y
中科院分区：
文献类型：
--
作者：
Wang Y;Wang H;Li Y;Zhang M;Zheng Y
构建光催化剂以促进氢气析出和二氧化碳光还原为太阳能燃料是至关重要的。设计和建立S型异质结系统是促进光生载流子的分离和转移，获得强大的光氧化还原能力以提高光催化性能的最可行的方法之一。本文中，零维/一维的S-方案异质结组成的CdSe量子点和聚合物氮化碳纳米棒（CdSe/CN）的创建和构建通过连接子辅助的杂交方法。与CN纳米棒和CdSe量子点相比，CdSe/CN复合材料具有上级光催化分解水的活性和促进二氧化碳转化的性能。5%CdSe/CN复合材料在光催化水分解（420 nm照射下的表观量子产率为10.2%，析氢速率为20.1 mmol g-1 h-1）和CO2还原（0.77 mmol g-1 h-1 CO产生速率）方面实现了最佳效率。CdSe/CN复合材料光催化活性的显著提高主要源于零维/一维S型异质结中出现的内电场，它可以大大提高光生载流子的分离。这项工作强调了采用聚合物氮化碳纳米结构作为适当平台来建立用于太阳能燃料生产的高活性S-方案异质结光催化剂的可能性。
Constructing photocatalysts to promote hydrogen evolution and carbon dioxide photoreduction into solar fuels is of vital importance. The design and establishment of an S-scheme heterojunction system is one of the most feasible approaches to facilitate the separation and transfer of photogenerated charge carriers and obtain powerful photoredox capabilities for boosting photocatalytic performance. Herein, a zero-dimensional/one-dimensional S-scheme heterojunction composed of CdSe quantum dots and polymeric carbon nitride nanorods (CdSe/CN) is created and constructed via a linker-assisted hybridization approach. The CdSe/CN composites exhibit superior photocatalytic activity in water splitting and promoted carbon dioxide conversion performance compared with CN nanorods and CdSe quantum dots. The best efficiency in photocatalytic water splitting (10.2% apparent quantum yield at 420 nm irradiation, 20.1 mmol g−1 h−1 hydrogen evolution rate) and CO2 reduction (0.77 mmol g−1 h−1 CO production rate) was achieved by 5%CdSe/CN composites. The significantly improved photocatalytic reactivity of CdSe/CN composites primarily originates from the emergence of an internal electric field in the zero-dimensional/one-dimensional S-scheme heterojunction, which could greatly improve the photoinduced charge-carrier separation. This work underlines the possibility of employing polymeric carbon nitride nanostructures as appropriate platforms to establish highly active S-scheme heterojunction photocatalysts for solar fuel production.
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影响因子：
22.1
作者：
Chen, Zheng;Fang, Yuanxing;Wang, Xinchen
通讯作者：
Wang, Xinchen
影响因子：
29.4
作者：
Jin, HY;Liu, Z;Che, SN
通讯作者：
Che, SN
影响因子：
3.7
作者：
Kresse, G;Furthmuller, J
通讯作者：
Furthmuller, J
N掺杂MoS2和S掺杂g-C3N4的S型异质结的一步构建用于增强光催化析氢
影响因子：
15.1
作者：
Chen, Yanli;Su, Fengyun;Ye, Liqun
通讯作者：
Ye, Liqun
影响因子：
4.4
作者：
BECKE, AD
通讯作者：
BECKE, AD