Enhanced solar- photocatalytic activity for the simultaneous degradation and detoxification of multiple chlorophenols by embedding plasmonic Pt into TiO2/H3PW12O40 nanopore
Enhanced solar- photocatalytic activity for the simultaneous degradation and detoxification of multiple chlorophenols by embedding plasmonic Pt into TiO2/H3PW12O40 nanopore
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通过将等离子体 Pt 嵌入 TiO2/H3PW12O40 纳米孔中，增强太阳能光催化活性，同时降解和解毒多种氯酚
DOI：
10.1016/j.apsusc.2020.145833
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发表时间：
2020-05
影响因子：
6.7
通讯作者：
Huo Mingxin
中科院分区：
文献类型：
--
作者：
Guan Jiunian;Li Lu;Chen Chaohuang;Lu Ping;Yan Yu;Wang Zirui;Lu Nan;Huo Mingxin
制备了一种新型的Pt-TiO2/H3PW12O40薄膜，由于光生电子和空穴的产率和分离效率的提高，该薄膜对多种氯苯酚(CPS)表现出了相当大的非选择性降解和解毒效率。莫特-肖特基分析表明，制备的PtTiO2H3PW12O40薄膜的载流子密度达到9.72T×1022 cm−1，高于PtTi02、TiO2H3PW12O40和TiO2光催化剂的载流子密度。这些优异的性能归功于SPR效应和Pt0形成的电子陷阱(由Ti-O-W和Ti-O-P形成的纳米孔很好地保护了Pt0)和H3PW12O40，H3PW12O40可以通过其自身产生的氧化还原循环有效地传输电子。同时，Pt-Ti02/H3PW12O40薄膜还可以显著降低多个CP的生态风险，因为O2−作为初级自由基，可以在很大程度上避免具有奎宁结构的产物的产生。多个CP的降解路径与单一CP的相似，因为在降解过程中检测到相同的羟基取代中间产物，均遵循一级反应动力学。此外，铂-二氧化钛/H3PW12O40薄膜良好的回收性能保证了经济成本的降低和二次污染的风险。因此，Pt-TiO2/H3PW12O40薄膜在去除水环境中的有机污染物方面显示出了相当大的应用潜力。
A novel Pt-TiO2/H3PW12O40film was fabricated, which showed a considerable nonselective degradation and detoxification efficiency towards multiple chlorophenols (CPs), owing to the enhanced yield and separation efficiency of photogenerated electrons and holes. Based on the Mott-Schottky analysis, the carrier density of as-prepared Pt-TiO2/H3PW12O40film reached 9.72 × 1022cm−1, which was higher than that of Pt-TiO2, TiO2/H3PW12O40, and TiO2. The outstanding properties were attributed to the SPR effect and the formation of electrons traps from Pt0(which was well protected by the nanopores that were formed by Ti-O-W and Ti-O-P); and H3PW12O40that can efficiently transport electrons via its self-generated redox cycle. Meanwhile, the Pt-TiO2/H3PW12O40film considerably lowers ecological risks of multiple CPs becauseradical dotO2−, as the primary radicals, can largely avoid the generation of products with a quinoid structure. The degradation pathways of multiple CPs were similar to those of single CP because the same hydroxyl substitution intermediate products were detected during the degradation, all of which followed the first-order reaction kinetics. Moreover, the excellent recycling performance of the Pt-TiO2/H3PW12O40film guaranteed the reduction in economic cost and risks of secondary pollution. Therefore, the Pt-TiO2/H3PW12O40film showed a considerable application potential in the removal of organic contaminants in aqueous environments.
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影响因子：
2.1
作者：
Hui Wang;W. Liang;Wanggang Zhang;Diaoyu Zhou
通讯作者：
Hui Wang;W. Liang;Wanggang Zhang;Diaoyu Zhou
影响因子：
22.1
作者：
L. Xu;Jun Wang
通讯作者：
L. Xu;Jun Wang
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影响因子：
6.7
作者：
Wang, Yaqi;Lu, Nan;Yuan, Xing
通讯作者：
Yuan, Xing
DOI：
10.1016/j.apcatb.2017.12.071
发表时间：
2018-06
期刊：
Applied Catalysis B: Environmental
影响因子：
--
作者：
Yilong Zhao;Yuechang Wei;Xingxing Wu;Huiling Zheng;Zhen Zhao;Jian Liu;Jianmei Li
通讯作者：
Yilong Zhao;Yuechang Wei;Xingxing Wu;Huiling Zheng;Zhen Zhao;Jian Liu;Jianmei Li
影响因子：
22.1
作者：
Karmaoui, Mohamed;Lajaunie, Luc;Neri, Giovanni
通讯作者：
Neri, Giovanni