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首页> 外文期刊>RSC Advances >Vertically aligned Pt/TiO2 nanobelt films on Ti sheets for efficient degradation of a refractory ethyl thionocarbamate collector
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Vertically aligned Pt/TiO2 nanobelt films on Ti sheets for efficient degradation of a refractory ethyl thionocarbamate collector

机译：Ti板上的垂直对齐的Pt / TiO2纳米膜膜，用于有效降解耐火乙基硫酸酯收集器

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摘要

Noble metal modified TiO _(2) nanostructures on a substrate featuring a two-dimensional (2D) morphology are of great interest in wastewater remediation due to high photocatalytic activity and avoidance of separating powder catalysts from water. In this work, vertically aligned Pt/TiO _(2) nanobelt films (Pt/TNFs) on Ti sheets were fabricated via a synthesis strategy including an alkaline hydrothermal treatment and electrostatic self-assembly. The Pt/TNFs had a BET specific surface area of 93.35 m ~(2) g ~(?1) , showing high adsorption capacity in removing an ethyl thionocarbamate (ETC) flotation collector. After the deposition with Pt nanoparticles, the photocatalytic activity of the TNFs increased by 94.98% with the enhanced mineralization of the ETC collector. Moreover, the Pt/TNFs on Ti sheets exhibited strong substrate adhesion enabling superior photocatalytic stability in the cyclic degradation of ETC. The solid phase extraction and gas chromatography-mass spectrometry (SPE/GC-MS) analysis revealed that seven byproducts still remained even when 100% of ETC was degraded, showing the difficulty in the complete mineralization of the ETC collector. The Pt/TNF can serve as a promising photocatalyst to treat mineral flotation wastewaters containing organic reagents.
机译：具有二维（2D）形态的衬底上的贵金属改性TiO _（2）纳米结构对废水补充具有很大的兴趣，由于高光催化活性和避免从水分离粉末催化剂。在该工作中，通过包括碱性水热处理和静电自组装的合成策略制造Ti片上的垂直对准的Pt / TiO _（2）纳米玻璃膜（Pt / TNF）。 Pt / TNFS的BET比表面积为93.35m〜（2）g〜（α1），显示出高吸附能力在除去乙基硫代氨基甲酸乙酯（ETC）浮选收集器中。在用Pt纳米颗粒沉积之后，TNF的光催化活性随着等收集器的增强矿化而增加了94.98％。此外，Ti纸张上的Pt / TNFS表现出强大的基底粘合力，使循环降解中的较高的光催化稳定性。固相萃取和气相色谱 - 质谱（SPE / GC-MS）分析显示，即使在100％等于降解时，仍然存在七个副产品，表明ETC收集器的完全矿化难以。 Pt / TNF可以作为有前途的光催化剂，以治疗含有有机试剂的矿物浮选废水。

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