Metal-free broad-spectrum PTCDA/g-C3N4 Z-scheme photocatalysts for enhanced photocatalytic water oxidation
Metal-free broad-spectrum PTCDA/g-C3N4 Z-scheme photocatalysts for enhanced photocatalytic water oxidation
复制标题
用于增强光催化水氧化的无金属广谱 PTCDA/g-C3N4 Z 型光催化剂
DOI：
10.1016/j.apcatb.2019.118179
复制
发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Zou Zhigang
中科院分区：
文献类型：
--
作者：
Yuan Yong-Jun;Shen Zhi-Kai;Wang Pei;Li Zijian;Pei Lang;Zhong Jiasong;Ji Zhenguo;Yu Zhen-Tao;Zou Zhigang
开发高效、广谱响应、无贵金属的水氧化光催化剂是光催化领域的一大挑战。在这里，我们通过合成Z-方案PTCDA/g-C3N4光催化剂来应对这一挑战，该催化剂可以吸收波长小于600 nm的光，用于可见光催化从水中产生O2。由于PTCDA和g-C3N4之间存在明显的电导和价带能级差异，PTCDA/g-C3N4光催化剂的瞬时光电流响应和时间分辨荧光衰减谱分析表明，PTCDA/g-C3N4光催化剂通过Z型机制有效地分离载流子。优化后的PtCDA/g-C3N4光催化剂具有较宽的可见光吸收容量和有效的电荷分离能力，在Co3O4作助催化剂、AgNO3作牺牲剂的可见光照射下，其析氧速率最高，为847mol.hμ·h−1·g−1。在420 nm的单色光照射下，表观量子产率为4.5%。
Exploiting highly-efficient, broad-spectrum responsive and noble-metal-free water oxidation photocatalyst is a major challenge in the field of photocatalysis. Herein, we tackle this challenge by synthesizing Z-scheme PTCDA/g-C3N4photocatalysts, which can absorb light with wavelength short than 600 nm, for visible light photocatalytic O2production from water. Owing to the evident conduction and valance band energy level difference between PTCDA and g-C3N4, the PTCDA/g-C3N4photocatalysts exhibit efficient charge carrier separation through a Z-scheme mechanism, as demonstrated by the transient photocurrent responses and time-resolved fluorescence decay spectra analysis. Benefitting from the synergetic effect of the broad visible light absorption capacity and efficient charge separation, the optimized PTCDA/g-C3N4photocatalyst shows the highest O2evolution rate of 847 μmol·h−1·g−1under visible light irradiation in the presence of Co3O4as a cocatalyst and AgNO3as the sacrificial reagent. An apparent quantum yield of 4.5% was achieved under monochromatic light irradiation at 420 nm.
登录
查看更多内容
确定吡啶-N-Co 键合在可逆 ORR/OER 协同电催化中的关键作用
影响因子：
29.4
作者：
Xue-Rui Wang;Jie-Yu Liu;Zi-Wei Liu;Wei-Chao Wang;Jun Luo;Xiao-Peng Han;Xi-Wen Du;Shi-Zhang Qiao;Jing Yang
通讯作者：
Jing Yang
影响因子：
15
作者：
Qian Wang;T. Hisatomi;Yohichi Suzuki;Zhenhua Pan;Jeongsuk Seo;M. Katayama;T. Minegishi;H. Nishiyama-H.-Ni
通讯作者：
Qian Wang;T. Hisatomi;Yohichi Suzuki;Zhenhua Pan;Jeongsuk Seo;M. Katayama;T. Minegishi;H. Nishiyama-H.-Ni
PTCDA/黑磷界面处的电荷转移
影响因子：
3.7
作者：
Wang Can;Niu Dongmei;Liu Baoxing;Wang Shitan;Wei Xuhui;Liu Yuquan;Xie Haipeng;Gao Yongli
通讯作者：
Gao Yongli
影响因子：
32.5
作者：
Jixin Zhu;Z. Yin;Dan Yang;T. Sun;Hong Yu;H. Hoster;H. Hng;Hua Zhang;Q. Yan
通讯作者：
Jixin Zhu;Z. Yin;Dan Yang;T. Sun;Hong Yu;H. Hoster;H. Hng;Hua Zhang;Q. Yan
DOI：
10.1021/acs.jpclett.8b02369
发表时间：
2018-09
期刊：
The journal of physical chemistry letters
影响因子：
--
作者：
Ruiqi Zhang;Lili Zhang;Qijing Zheng;P. Gao;Jin Zhao;Jinlong Yang
通讯作者：
Ruiqi Zhang;Lili Zhang;Qijing Zheng;P. Gao;Jin Zhao;Jinlong Yang