A green synthetic approach using chili plant supported Ag/Ag2O@P25 heterostructure with enhanced photocatalytic properties under solar irradiation
A green synthetic approach using chili plant supported Ag/Ag2O@P25 heterostructure with enhanced photocatalytic properties under solar irradiation
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DOI：
10.1016/j.ijleo.2019.162943
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发表时间：
2019-09-01
期刊：
影响因子：
3.1
通讯作者：
El-Kemary, Maged
中科院分区：
文献类型：
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作者：
El-Shabasy, Rehan;Yosri, Nermeen;El-Kemary, Maged
由于环境污染是一个全球性的灾难性事件，不同催化剂的绿色合成一直是人们追求的目标。在此，辣椒提取物为基础的催化剂用于制造Ag/Ag 2 O纳米粒子（NPs）没有苛刻的条件。所制备的Ag/Ag 2 O纳米颗粒均匀，平均粒径为11.4 nm。Ag/Ag2O@P25光催化剂具有良好的电子-空穴对分离和活性位，具有较高的光催化活性。该催化剂在节能的太阳光照射下，60 s内对模拟污染物亚甲基蓝（MB）的降解率达到98.7%，对2，4-二硝基苯胺（2，4-DNA）的催化转化率达到100%，符合“绿色化学”的要求。此外，所制备的光催化剂具有良好的上级稳定性和重复使用性，热滤实验证明了催化剂的非均匀性。
As the environmental pollution is a global, catastrophic occurrence, green synthesis of different catalysts has long been pursued. Herein, Capsicum annuum L (chili) extract-based catalysts were used for the fabrication of Ag/Ag2O nanoparticles (NPs) without harsh conditions. The prepared Ag/Ag2O NPs were uniform with an average size of 11.4 nm. The Ag/Ag2O was smoothly coupled with P25 to produce Ag/Ag2O@P25 photocatalyst which had effective electron-hole pair separation and active sites for high photocatalytic activity. The catalyst degraded 98.7% of the model pollutant methylene blue (MB) and catalytic conversion of 100% 2,4-dinitroaniline (2,4-DNA) within 60 s were realized under energy saving solar-light illumination, matching the rules of "green chemistry". In addition, the prepared photocatalyst exhibited superior stability and reusability, and the hot filtration test proved the heterogeneity of the catalyst.