Enhanced photocatalytic activity of Ag3PO4 for oxygen evolution and Methylene blue degeneration: Effect of calcination temperature
Enhanced photocatalytic activity of Ag3PO4 for oxygen evolution and Methylene blue degeneration: Effect of calcination temperature
复制标题
Ag3PO4 增强析氧和亚甲蓝变性光催化活性：煅烧温度的影响
DOI：
10.1016/j.ijhydene.2015.12.061
复制
发表时间：
2016-01
影响因子：
7.2
通讯作者：
Ling Zhang
中科院分区：
文献类型：
--
作者：
Ruifeng Chong;Xiaoxue Cheng;Baoyun Wang;Deliang Li;Zhixian Chang;Ling Zhang
本工作采用共沉淀法高温煅烧制备Ag3PO4光催化剂。通过X射线衍射、紫外可见漫反射光谱、扫描电子显微镜、透射电子显微镜、比表面积、X射线光电子能谱和电化学测量等方法系统研究了Ag3PO4光催化剂的物理化学性质。高温煅烧导致Ag3PO4结晶度提高、氧空位增加、比表面积降低。发现 Ag3PO4 光催化析氧和亚甲蓝变性的活性高度依赖于煅烧温度。在400°C退火的Ag3PO4表现出最高的光催化析氧量，为87.6μmol·g−1h−1，是共沉淀法获得的Ag3PO4的4倍。此外，在 400 °C 下退火的 Ag3PO4 在可见光下表现出最佳的亚甲基蓝 (MB) 光催化降解效果。 Ag3PO4 的物理化学性质（包括结晶度、氧空位和比表面积）的变化应该是光催化活性增强的原因。目前的工作开辟了一条通过高温煅烧构建高效 Ag3PO4 基光催化剂的途径。
In this work, Ag3PO4photocatalysts were prepared via coprecipitation method followed by high temperature calcination. The physicochemical properties of received Ag3PO4photocatalysts were systematically investigated by using X-ray diffraction, ultraviolet–visible diffuse reflection spectroscopy, scanning electron microscopy, transmission electron microscopy, specific surface area, X-ray photoelectron spectroscopy and electrochemical measurements. The high temperature calcination induces the improvement of crystallinity, the increase of oxygen vacancies, and the decrease of specific surface area of Ag3PO4. The activities of Ag3PO4towards photocatalytic oxygen evolution and Methylene blue degeneration were found to be highly dependent on the calcination temperature. The Ag3PO4annealed at 400 °C exhibits the highest photocatalytic oxygen evolution of 87.6 μmol g−1h−1, which isca.4 times higher than that of Ag3PO4obtained by coprecipitation method. Moreover, the Ag3PO4annealed at 400 °C demonstrated the best photocatalytic degeneration of Methylene blue (MB) under visible light. The variation of physicochemical properties including crystallinity, oxygen vacancies and specific surface area of Ag3PO4should be responsible for the enhanced photocatalytic activities. The present work opens an avenue to construct efficient Ag3PO4-based photocatalysts by high temperature calcination.
登录
查看更多内容
可见光照射下有效分解2-氯苯酚的Ag/Ag3PO4/TiO2异质结光电极的制备
影响因子：
11.9
作者：
Wei Teng;Xinyong Li;Qidong Zhao;Guohua Chen
通讯作者：
Guohua Chen
影响因子：
0.6
作者：
Tae-Bong Hur;Dae-Hwang Yoo;G. Jeen;Y. Hwang;H. Kim;Y. Hwang;Y. Um
通讯作者：
Tae-Bong Hur;Dae-Hwang Yoo;G. Jeen;Y. Hwang;H. Kim;Y. Hwang;Y. Um
影响因子：
7.3
作者：
Yan, Hongjian;Yang, Jinhui;Li, Can
通讯作者：
Li, Can
影响因子：
22.1
作者：
Yue, Longfei;Wang, Shanfeng;Zhu, Lingyan
通讯作者：
Zhu, Lingyan
新型CaIn2S4光催化剂在可见光照射下光催化析氢
影响因子：
7.2
作者：
Ding, Jianjun;Sun, Song;Gao, Chen
通讯作者：
Gao, Chen