Enhanced light harvesting ability in hollow Pt/TiO2 nanoreactor for boosting tetracycline photodegradation

IF 4.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Progress in Natural Science: Materials International Pub Date : 2024-08-01 DOI:10.1016/j.pnsc.2024.07.005

Danyang Li , Yongqi Li , Dagui Liao , Mengqing Cao , Lulu Zhang , Shasha Zhang , Ling Chen , Yawen Chen , Huan Wang , Jian Qi , Feifei You

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Abstract

Utilizing solar energy to decompose tetracycline (TC) is a green strategy to treat wastewater. Herein, a heterogeneous hollow structured TiO₂ decorated Pt nanoparticles were successfully designed and synthesized via hard-template approach and photo-deposition process toward TC photodegradation. The Pt nanoparticles loaded on the surface of hollow structured TiO₂ can increase the visible light absorption due to the local surface plasmon resonance (LSPR) effect. Furthermore, owing to the tough electron oscillation of the LSPR excitation, the plasmonic hot holes on the surface of Pt nanoparticles can capture the electrons of TiO₂, effectively facilitating the separation of photo-excited charge carriers because of the formation of Schottky junction constructed between Pt and TiO₂. Combined the natural merits of shorten conveying path of charge carriers and physical structural stability for hollow structure, the optimal Pt/TiO₂ hetero-junction hybrid showed superior photocatalytic activity and durability for TC photodegradation with the degradation efficiency of 93.8 % after 30 min and the rate constant of 0.09196 min⁻¹ under 300 W Xe lamp irradiation. This work displays a heterogeneous hybrids catalyst based on eco-friendly metal and semiconductor materials which can be used in the fields including without limitation TC photodegradation.

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增强中空铂/二氧化钛纳米反应器的光收集能力，促进四环素的光降解

利用太阳能分解四环素（TC）是一种处理废水的绿色策略。本文通过硬模板法和光沉积工艺，成功设计和合成了一种装饰有铂纳米粒子的异质中空结构二氧化钛，用于四环素的光降解。由于局部表面等离子体共振（LSPR）效应，负载在中空结构二氧化钛表面的铂纳米粒子可以增加可见光吸收。此外，由于 LSPR 激发的韧性电子振荡，铂纳米粒子表面的质子热空穴可以捕获 TiO2 的电子，由于铂和 TiO2 之间形成了肖特基结，从而有效地促进了光激发电荷载流子的分离。结合中空结构缩短电荷载流子传输路径和物理结构稳定性的天然优点，最优的铂/二氧化钛异质结杂化物在 300 W Xe 灯辐照下，30 分钟后的降解效率为 93.8%，速率常数为 0.09196 min-1，在 TC 光降解方面表现出优异的光催化活性和耐久性。这项工作展示了一种基于环保金属和半导体材料的异质混合催化剂，可用于包括但不限于三氯甲烷光降解等领域。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Progress in Natural Science: Materials International 综合性期刊-综合性期刊

CiteScore

8.60

自引率

2.10%

发文量

2812

审稿时长

49 days

期刊介绍： Progress in Natural Science: Materials International provides scientists and engineers throughout the world with a central vehicle for the exchange and dissemination of basic theoretical studies and applied research of advanced materials. The emphasis is placed on original research, both analytical and experimental, which is of permanent interest to engineers and scientists, covering all aspects of new materials and technologies, such as, energy and environmental materials; advanced structural materials; advanced transportation materials, functional and electronic materials; nano-scale and amorphous materials; health and biological materials; materials modeling and simulation; materials characterization; and so on. The latest research achievements and innovative papers in basic theoretical studies and applied research of material science will be carefully selected and promptly reported. Thus, the aim of this Journal is to serve the global materials science and technology community with the latest research findings. As a service to readers, an international bibliography of recent publications in advanced materials is published bimonthly.