新型泡沫镍模板Ti_(3)C_(2)T_(x)@ZnO复合材料光降解RhB应用研究  

Novel Ni Foam Templated Ti_(3)C_(2)T_(x)@ZnO Composite for Photodegradation of RhB

作　　者：黄超 李孟遥 战光辉 HUANG Chao;LI Mengyao;ZHAN Guanghui(School of Materials Science and Engineering,Hainan University,Haikou 570228,Hainan,China)

机构地区：[1]海南大学材料科学与工程学院,海南海口570228

出　　处：《陶瓷学报》2024年第5期993-1002,共10页Journal of Ceramics

基　　金：海南省自然科学基金(620QN239,223QN186)。

摘　　要：工业染料废水的净化对缓解水资源危机至关重要,但传统的金属氧化物半导体光催化降解方法存在成本高、效率低等问题。与之形成鲜明对比的是,MXenes材料因其高比表面积和优秀的导电性,尤其是经过剥离的片状MXenes材料,在光照下展示出了卓越的电荷转移能力,MXenes材料的利用开辟了光催化反应的新途径。特别是,MXenes如Ti_(3)C_(2)T_(x)与传统ZnO相比,在催化效率和稳定性上都有显著提升。本研究将ZnO与Ti_(3)C_(2)T_(x)结合,制备了一种高比表面积的光催化复合材料,既增加了活性位点,也显著提高了光催化效率。通过水热法,成功将单层Ti_(3)C_(2)T_(x)涂覆在泡沫镍上,并在其上生长ZnO纳米棒,制备出高效的光催化降解材料。实验结果表明,性能最优的材料能在100 min内将RhB的降解率提升至97.7%,同时也有效降解了四环素和对氯苯酚。这证明MXenes材料和金属氧化物复合材料在光催化染料降解领域具有巨大的应用潜力。The purification of industrial dye wastewater is crucial for alleviating the water resource crisis,yet traditional semiconductor photocatalytic degradation methods involving metal oxides face issues of high cost and low efficiency.In stark contrast,MXenes,due to their high specific surface area and high conductivity,particularly the exfoliated flake-like MXenes,have superior charge transfer capabilities under illumination,opening new avenues for photocatalytic reactions.Notably,MXenes,such as Ti_(3)C_(2)T_(x),exhibit significant improvements in catalytic efficiency and stability,as compared with the traditional ZnO.In this study,ZnO was combined with flake-like Ti_(3)C_(2)T_(x)to create a photocatalytic composite material with high specific surface area,thereby increasing active sites and significantly enhancing photocatalytic efficiency.Through hydrothermal synthesis,monolayer Ti_(3)C_(2)T_(x)was coated on nickel foam,on which ZnO nanorods were grown,producing a highly efficient photocatalytic degradation material.It is experimentally shown that the optimized sample exhibited RhB degradation rate of 97.7%in 100 min,while also effectively degrading tetracycline and 4-chlorophenol.

关 键 词：ZNO MXenes 光催化 异质结构 罗丹明B 

分 类 号：TQ174.75[化学工程—陶瓷工业]