高活性晶面锐钛矿型TiO2纳米材料的溶剂热法制备及其光催化性能
Solvothermal Synthesis of High-Reactive Faceted Anatase TiO2 Nanomaterials with Improved Photocatalytic Performance
作者单位E-mail
杜意恩 晋中学院化学化工系, 晋中 030619 duyien124@163.com 
牛宪军 晋中学院化学化工系, 晋中 030619  
李万喜 晋中学院化学化工系, 晋中 030619  
高淑雅 晋中学院化学化工系, 晋中 030619  
李玉梅 新疆工程学院化学与环境工程学院, 乌鲁木齐 830023 mei2008bj@mail.bnu.edu.cn 
摘要: 以钛酸四丁酯为钛源,通过温和的溶剂热法制备了{101}/[111]-晶面共暴露(乙酸-TiO2和无控制剂-TiO2,即HAc-TiO2和NO-TiO2)和{101}/{010}/[111]-晶面共暴露(甲酸-TiO2和氢氟酸-TiO2,即FA-TiO2和HF-TiO2)的锐钛矿型TiO2纳米材料,对其晶体结构、形貌、比表面积、孔径分布、光学性质以及载流子(电子和空穴)的迁移和重组进行了表征,并对其光催化性能和循环性能进行了评价。研究表明,所制备的{101}/{010}/[111]-晶面共暴露的HF-TiO2在光催化降解罗丹明B溶液(或对硝基苯酚溶液)的过程中显示了最高的光催化活性,其降解效率为97.35%(或68.57%),分别是FA-TiO2、HAc-TiO2、BD-TiO2和NO-TiO2的1.06倍(或1.09倍)、1.18倍(或1.14倍)、1.35倍(或2.33倍)和4.88倍(或5.80倍),这归因于其最高的结晶性、较大的表面能、优越的表面原子结构和表面电子结构、最低的光致发光强度、最快的电荷转移速率和最小的载流子复合率。
关键词: 锐钛矿型TiO2  晶面暴露  溶剂热法  光催化性能  形貌控制剂
基金项目: 山西省自然科学基金项目(No.201901D111303)、山西省高等学校科技创新计划项目(No.2019L0881,2019L0883)、山西省“1331工程”创新团队项目(No.PY201817)、晋中学院“1331工程”创新团队项目(No.jzxycxtd2017004,jzxycxd2019005)和新疆维吾尔自治区高校科研计划项目(No.XJEDU2018Y057)资助。
Abstract: Herein, anatase TiO2 nanoparticles with co-exposed {101}/[111]-facets (ethanoic acid-TiO2 and no control agent-TiO2, namely HAc-TiO2 and NO-TiO2) and co-exposed {101}/{010}/[111]-facets (formic acid-TiO2 and hydrofluoric acid-TiO2, namely FA-TiO2 and HF-TiO2) were prepared by a mild solvothermal method using tetrabutyl titanate as titanium source. The crystal structure, morphology, specific surface area, pore size distribution, optical properties, transformation and recombination of charge carriers (electron and hole) of the samples were characterized. The photocatalytic performance and cycling performance of the samples were also evaluated. The results showed that as-prepared HF-TiO2 with co-exposed {101}/{010}/[111]-facets exhibited the highest photocatalytic activity in the process of photocatalytic degradation of rhodamine B solution (or p-nitrophenol solution), and its degradation efficiency was 97.35% (or 68.57%), which was 1.06 times (or 1.09 times), 1.18 times (or 1.14 times), 1.35 times (or 2.33 times) and 4.88 times (or 5.80 times) of FA-TiO2, HAc-TiO2, BD-TiO2 and NO-TiO2, respectively. The highest photocatalytic activity of HF-TiO2 could be attributed to the synergistic effect of the maximum crystallinity, larger surface energy, superior surface atomic structure and surface electronic structure, lowest photoluminescence intensity, fastest charge transfer rate and minimum carrier recombination rate.
Keywords: anatase TiO2  exposed facets  solvothermal synthesis method  photocatalytic performance  morphology-controlling agent
投稿时间:2021-02-24 修订日期:2021-08-06
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杜意恩,牛宪军,李万喜,高淑雅,李玉梅.高活性晶面锐钛矿型TiO2纳米材料的溶剂热法制备及其光催化性能[J].无机化学学报,2021,37(10):1753-1763.
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