A S-scheme heterojunction of 1D/2D TiO2/Bi2O2CO3: Precise interface engineering and exceptional membrane purification

IF 8.6 2区工程技术 Q1 ENERGY & FUELS Sustainable Materials and Technologies Pub Date : 2024-06-18 DOI:10.1016/j.susmat.2024.e01023

Jingjing Zhang , Quanquan Shi , Qi Xiong , Guichen Ping , Qingyi Qian , Xiaolin Yan

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Abstract

Developing advanced photocatalysts for antibiotics degradation is utmost importance in wastewater purification. Herein, we designed to a unique 1D/2D TiO₂/Bi₂O₂CO₃ (TBC) S-scheme heterojunction photocatalysts via a facile hydrothermal method, in which K₂Ti₈O₁₇-T nanowires are in situ transform into TiO₂ nanorod and then loaded on surface of Bi₂O₂CO₃ nanosheets. As-prepared TBC composites exhibited obviously enhanced photocatalytic removal activity for tetracycline (TC) degradation under visible-light irradiation, and the degradation efficiency achieved 86% after 60 min, which is significantly higher than pristine samples. This is because that the construction of 1D/2D heterojunction interface efficiently endowed the abundant surface oxygen vacancies and further boosted the separation and transfer of photoexcited carriers. Additionally, TBC composites maintained superior removal efficiency with continuous operation (600 min) in membrane reactor. The degradation pathway and toxicity estimation were also further investigated. In all, this work reported an integrated construction for 1D/2D S-scheme photocatalysts with efficient photocatalytic membrane removal for water purification.

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1D/2D TiO2/Bi2O2CO3 的 S 型异质结：精确的界面工程和卓越的膜纯化

开发先进的抗生素降解光催化剂对废水净化至关重要。在这里，我们通过一种简便的水热法设计了一种独特的 1D/2D TiO2/Bi2O2CO3 (TBC) S 型异质结光催化剂。所制备的TBC复合材料在可见光照射下对四环素（TC）降解的光催化去除活性明显增强，60分钟后降解效率达到86%，明显高于原始样品。这是因为一维/二维异质结界面的构建有效地赋予了其丰富的表面氧空位，进一步促进了光激发载流子的分离和转移。此外，TBC 复合材料在膜反应器中连续运行（600 分钟）仍能保持优异的去除效率。此外，还进一步研究了降解途径和毒性评估。总之，该研究报告了一种具有高效光催化膜去除功能的 1D/2D S 型光催化剂的集成结构，可用于水净化。

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来源期刊

Sustainable Materials and Technologies Energy-Renewable Energy, Sustainability and the Environment

CiteScore

13.40

自引率

4.20%

发文量

158

审稿时长

45 days

期刊介绍： Sustainable Materials and Technologies (SM&T), an international, cross-disciplinary, fully open access journal published by Elsevier, focuses on original full-length research articles and reviews. It covers applied or fundamental science of nano-, micro-, meso-, and macro-scale aspects of materials and technologies for sustainable development. SM&T gives special attention to contributions that bridge the knowledge gap between materials and system designs.