Synthesis of Leaf-Vein-Like g-C_3N_4 with Tunable Band Structures and Charge Transfer Properties for Selective Photocatalytic H_2O_2 Evolution

Feng Chengyang; Tang Lin; Deng Yaocheng; Wang Jiajia; Luo Jun; Liu Yani; Ouyang Xilian; Yang Haoran; Yu Jiangfang; Wang Jingjing

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Synthesis of Leaf-Vein-Like g-C_3N_4 with Tunable Band Structures and Charge Transfer Properties for Selective Photocatalytic H_2O_2 Evolution

机译：用可调谐带结构合成叶静脉样G-C_3N_4和选择性光催化H_2O_2进化的电荷转移性能

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摘要

Photocatalytic H(2)O(2)evolution through two-electron oxygen reduction has attracted wide attention as an environmentally friendly strategy compared with the traditional anthraquinone or electrocatalytic method. Herein, a biomimetic leaf-vein-like g-C(3)N(4)as an efficient photocatalyst for H(2)O(2)evolution is reported, which owns tenable band structure, optimized charge transfer, and selective two-electron O(2)reduction. The mechanism for the regulation of band structure and charge transfer is well studied by combining experiments and theoretical calculations. The H(2)O(2)yield of CN4 (287 mu mol h(-1)) is about 3.3 times higher than that of pristine CN (87 mu mol h(-1)), and the apparent quantum yield for H(2)O(2)evolution over CN4 reaches 27.8% at 420 nm, which is much higher than that for many other current photocatalysts. This work not only provides a novel strategy for the design of photocatalyst with excellent H(2)O(2)evolution efficiency, but also promotes deep understanding for the role of defect and doping sites on photocatalytic activity.

机译：光催化H（2）O（2）通过双电子氧还原的进化引起了与传统的蒽醌或电催化方法相比的环保策略。在此，报道了一种仿生叶静脉样GC（3）N（4）作为H（2）O（2）e（2）进化的有效光催化剂，其拥有榫筋结构，优化的电荷转移和选择性二电子o （2）减少。通过组合实验和理论计算来利用带状结构和电荷转移的调节机制。 CN4的H（2）O（2）产率（287μmolH（-1））比原始CN的高度高约3.3倍（87μmolH（-1）），以及H的表观量子产率（2）O（2）在420nm的CN4上达到27.8％，远高于许多其他电流光催化剂。这项工作不仅为光催化剂设计提供了一种新颖的H（2）o（2）演进效率，而且还促进了对光催化活性的缺陷和掺杂位点的深刻理解。

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来源
《Advanced Functional Materials》 |2020年第39期|2001922.1-2001922.13|共13页
作者
Feng Chengyang; Tang Lin; Deng Yaocheng; Wang Jiajia; Luo Jun; Liu Yani; Ouyang Xilian; Yang Haoran; Yu Jiangfang; Wang Jingjing;
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Hunan Univ Coll Environm Sci & Engn Key Lab Environm Biol & Pollut Control Changsha 410082 Hunan Peoples R China;

Hunan Univ Coll Environm Sci & Engn Key Lab Environm Biol & Pollut Control Changsha 410082 Hunan Peoples R China;

Hunan Agr Univ Coll Resources & Environm Changsha 410028 Peoples R China;

Hunan Univ Coll Environm Sci & Engn Key Lab Environm Biol & Pollut Control Changsha 410082 Hunan Peoples R China;

Hunan Univ Coll Environm Sci & Engn Key Lab Environm Biol & Pollut Control Changsha 410082 Hunan Peoples R China;

Hunan Univ Coll Environm Sci & Engn Key Lab Environm Biol & Pollut Control Changsha 410082 Hunan Peoples R China;

Hunan Univ Coll Environm Sci & Engn Key Lab Environm Biol & Pollut Control Changsha 410082 Hunan Peoples R China;

Hunan Univ Coll Environm Sci & Engn Key Lab Environm Biol & Pollut Control Changsha 410082 Hunan Peoples R China;

Hunan Univ Coll Environm Sci & Engn Key Lab Environm Biol & Pollut Control Changsha 410082 Hunan Peoples R China;

Hunan Univ Coll Environm Sci & Engn Key Lab Environm Biol & Pollut Control Changsha 410082 Hunan Peoples R China;

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正文语种 eng
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boron doping; defects; g-C(3)N(4)H(2)O(2)evolution; two-electron oxygen reduction;

机译：硼掺杂;缺陷;G-C（3）N（4）H（2）O（2）e（2）进化;两电子氧还原;

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2. Tunable conduction band energy and metal-to-ligand charge transfer for wide-spectrum photocatalytic H-2 evolution and stability from isostructural metal-organic frameworks [J] . Song Ting, Zhang Piyong, Zeng Jian, International journal of hydrogen energy . 2017,第43期

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Synthesis of Leaf-Vein-Like g-C_3N_4 with Tunable Band Structures and Charge Transfer Properties for Selective Photocatalytic H_2O_2 Evolution

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