Efficient hydrogen evolution and rapid degradation of organic pollutants by robust catalysts of MoS2/TNT@CNTs
Efficient hydrogen evolution and rapid degradation of organic pollutants by robust catalysts of MoS2/TNT@CNTs
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通过 MoS2/TNT@CNT 的强大催化剂有效析氢并快速降解有机污染物
DOI：
10.1016/j.ijhydene.2018.07.051
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发表时间：
2018-08
影响因子：
7.2
通讯作者：
Hu Zhiwen
中科院分区：
文献类型：
--
作者：
Qin Qingyuan;Shi Qingdan;Ding Wenfeng;Wan Junmin;Hu Zhiwen
利用廉价高效的复合催化剂进行电催化析氢和消除废水中的有机污染物近年来引起了人们的广泛关注。在此，成功地采用了一种简便的两步水热工艺，在独特的TNT@CNT（TC）表面上实现了MoS2纳米片的生长。值得注意的是，优化后的MoS2/TNT@CNTs（MTC）催化剂对高浓度（30 mg/L）亚甲基蓝（MB）和罗丹明B（RhB）表现出高效光催化活性，50 min内光降解率分别为98.7%和99.0%，分别是纯TiO2纳米管（TNT）的2倍和6倍。同时，新型复合材料还表现出更好的析氢反应（HER）活性，过电位为 110 mV。光催化性能和电催化活性的显着增强归因于化学键的形成和大的比表面积，有效分离和转移界面电荷。自由基清除技术证实空穴(h+)和•O2−自由基在光催化过程中起主要作用。这项研究表明，新型纳米复合材料因其低成本的原材料、简单廉价的合成工艺和环境友好的方法而在解决环境和能源问题方面具有广泛的应用。
Exploiting an inexpensive and high-effective composite catalyst for electrocatalytic hydrogen evolution and elimination of organic contaminant from wastewater has drawn great attentions recently. Herein, a facile two-step hydrothermal process was successfully adopted to realize the growth of MoS2nanosheet on the surface of unique TNT@CNTs (TC). Remarkable, the optimized MoS2/TNT@CNTs (MTC) catalyst exhibited high-efficient photocatalytic activity for high concentrations (30 mg/L) of methylene blue (MB) and rhodamine B (RhB) with the photodegradation rate of 98.7% and 99.0% in 50 min, which are 2 and 6 times higher than that of pure TiO2nanotube (TNT), respectively. Meanwhile, the novel composites also showed better hydrogen evolution reaction (HER) activity with the overpotential of 110 mV. The significant enhance in photocatalytic performance and electrocatalytic activity are attribute to formation of chemical bonds and large specific surface area, which effectively separate and transfer interfacial charges. The radical scavenging techniques confirmed that the holes (h+) and •O2−radicals played a main role in the photocatalytic process. This study suggests that the novel nanocomposite has extensive application to solve environment and energy issues due to the low-cost raw materials, simple and inexpensive synthesizing process and environmental-friendly methods.
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DOI：
10.1007/s10854-015-3823-4
发表时间：
2015
期刊：
Journal of Materials Science: Materials in Electronics
影响因子：
--
作者：
T. M. Wandre;P. Gaikwad;A. Tapase;K. Garadkar;S. Vanalakar;P. Lokhande;R. Sasikala;P. P. Hankare-P.-P.-Hanka
通讯作者：
T. M. Wandre;P. Gaikwad;A. Tapase;K. Garadkar;S. Vanalakar;P. Lokhande;R. Sasikala;P. P. Hankare-P.-P.-Hanka
影响因子：
--
作者：
Akhavan, O.;Azimirad, R.;Larijani, M. M.
通讯作者：
Larijani, M. M.
影响因子：
3.7
作者：
Liu, Jianwei;Li, Jun;Jiang, Hongxing
通讯作者：
Jiang, Hongxing
多壁碳纳米管诱导高倍率和长寿命锂离子电池可控二氧化钛形貌转变
影响因子：
3.9
作者：
Yu Xia;Wan-Sheng Xiong;Yun Jiang;Weiwei Sun;Hong-Qian Sang;Rong-Xiang He;Qidong Tai;Bolei Chen;Yumin Liu;Xing-Zhong Zhao
通讯作者：
Xing-Zhong Zhao
影响因子：
6.7
作者：
Yanru Liu;Wenhui Hu;Xiao Li;B. Dong;Xiao Shang;Guanqun Han;Y. Chai;Yunqi Liu;Chenguang Liu-Chenguang-L
通讯作者：
Yanru Liu;Wenhui Hu;Xiao Li;B. Dong;Xiao Shang;Guanqun Han;Y. Chai;Yunqi Liu;Chenguang Liu-Chenguang-L