山东科学2025，Vol.38Issue(2)：80-88,9.DOI:10.3976/j.issn.1002-4026.2025018
基于球磨法的TiO2/煤气化渣复合材料的构建及其光催化性能研究
Construction of TiO2/coal gasification slag composites via the ball milling method and their photocatalytic properties
摘要
Abstract
Coal gasification slag is a solid waste generated during coal chemical production and accounts for a notable proportion of solid wastes.Leveraging the natural properties(e.g.,high specific surface area and pore volume)and compositional characteristics(rich in carbon)of coal gasification slag,this study used the mechanical ball milling method to composite coal gasification slag using a conventional photocatalyst titanium dioxide(TiO2)for broadening the photocatalytic response range of TiO2.Dye wastewater was used as the treatment object to evaluate the photocatalytic performance of the resulting composite material.Characterization techniques such as X-ray diffraction,Fourier Transform infrared spectroscopy,and scanning electron microscopy were used to investigate the optimal process conditions for the catalytic degradation of a methylene blue(MB)solution by the TiO2/coal gasification slag composite material.Results show that under visible-light conditions,the degradation efficiency of the developed composite material(TiO2∶slag ratio of 90∶10)is higher than those of anatase TiO2,P25,and the coal gasification slag/P25 composite material.Infrared characterization and free-radical quenching experiments indicated that coal gasification slag and TiO2 effectively bonded through Ti—O—Si bonds,expanding the photocatalytic response range of TiO2 and increasing the photocatalytic reaction contact area.In addition,hydroxyl radicals were identified as the primary active substances responsible for degrading MB.Compared with anatase TiO2,the catalytic efficiency of the composite material increased by 4.96 times.Furthermore,its catalytic degradation efficiency remained above 90％after three cycles,indicating that the TiO2/coal gasification slag composite material has excellent degradation efficiency and stability.关键词
煤气化渣/二氧化钛/可见光/光催化/染料废水Key words
coal gasification slag/titanium dioxide(TiO2)/visible light/photocatalysis/dye wastewater分类
环境科学引用本文复制引用
孙静,韩金泰,申婷婷,王晨,冯庆,刘若冰..基于球磨法的TiO2/煤气化渣复合材料的构建及其光催化性能研究[J].山东科学,2025,38(2):80-88,9.基金项目
齐鲁工业大学科教产融合试点工程基础研究类项目(2022PY047) （2022PY047）
国家自然科学青年基金项目(21908118) （21908118）
山东省高等学校"青创团队"计划项目(2023K139) （2023K139）
