CAJ | 학술논문

利用蒸发诱导自组装技术，用液晶为模板制备有序介孔氧化钛(OMPT)，探讨影响亚甲基蓝(MB)氧化降解效率的主要因素，包括MB的初始浓度、pH值和催化剂浓度。结果表明，所获得的OMPT具有二维六方介孔结构，粒径小，比表面积大，表现出高的热稳定性，这些都导致其比催化剂 P25和溶胶-凝胶法制备的纳米氧化钛颗粒(NPT)有更高的降解效率。在MB浓度5 mg/L、pH 6和OMPT浓度1.5 g/L的条件下，MB的降解率最快。总有机碳(TOC)分析表明，OMPT在240 min内实现了对MB的完全矿化，其速率常数高于P25和NPT的。
이용증발유도자조장기술，용액정위모판제비유서개공양화태(OMPT)，탐토영향아갑기람(MB)양화강해효솔적주요인소，포괄MB적초시농도、pH치화최화제농도。결과표명，소획득적OMPT구유이유륙방개공결구，립경소，비표면적대，표현출고적열은정성，저사도도치기비최화제 P25화용효-응효법제비적납미양화태과립(NPT)유경고적강해효솔。재MB농도5 mg/L、pH 6화OMPT농도1.5 g/L적조건하，MB적강해솔최쾌。총유궤탄(TOC)분석표명，OMPT재240 min내실현료대MB적완전광화，기속솔상수고우P25화NPT적。
Ordered mesoporous TiO2 (OMPT) was prepared by an evaporation induced self-assembly technique using liquid crystal as template. The key factors affecting the methylene blue (MB) oxidation efficiency were investigated, including the initial concentration of MB, pH value and catalyst concentration. The results show that the obtained OMPT has high thermal stability and shows a 2D hexagonal mesostructure with the small particle size and high surface area, which lead to higher degradation efficiency than commercial P25 or nanoparticle TiO2 (NPT) fabricated by sol-gel process. The optimal conditions are 5 mg/L MB, pH 6 and 1.5 g/L OMPT for the fastest rate of MB degradation. Total organic carbon (TOC) analysis indicates complete mineralization of MB in 240 min by OMPT, with rate constant higher than NPT or P25.