| 杜意恩1*，帖鑫龙1，马文香2，郭彦青1.水热法制备TiO2纳米晶及其光催化性能研究[J].海南师范大学学报自科版,2022,35(1):31-38 |
| 水热法制备TiO2纳米晶及其光催化性能研究 |
| Hydrothermal Synthesis and Photocatalytic Activity ofTiO2 Nanocrystals |
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| DOI：10.12051/j.issn.1674-4942.2022.01.005 |
| 中文关键词: 二氧化钛 水热反应 光催化性能 |
| 英文关键词: titanium dioxide hydrothermal reaction photocatalysis performance |
| 基金项目:山西省应用基础研究计划项目（201901D111303）；山西省“1331 工程”创新团队项目（PY201817）；晋中学院
“1331工程”重点创新团队项目（jzxycxd2019005） |
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| 中文摘要: |
| 以层状钛酸盐K2Ti4O9/K2Ti6O13/K4TiO4复合物为钛源，通过质子交换、插层和剥离等化学
反应，得到了含H2Ti4O9/H2Ti6O13/H4TiO4纳米片的胶态溶液。向上述胶态溶液分别加入NH4F、HCl、 H2O2、NH3·H2O等形貌控制剂，通过水热反应，制备了不同晶型、不同形貌的TiO2纳米晶。研究表
明，在紫外光照射90 min时，NH4F-TiO2纳米晶对罗丹明B溶液的光催化降解效率最高（78.5%），约 为 H2O2-TiO（2 77.3%）、工业-TiO（2 65.0%）、NH3·H2O-TiO（2 54.9%）、HCl-TiO（2 22.2%）和空白样品
（4.2%）的1.02、1.21、1.43、3.54和18.70倍，归因于其主要成分为锐钛矿型TiO2、颗粒尺寸最小和比
表面积最大。 |
| 英文摘要: |
| A colloidal solution containing H2Ti4O9/H2Ti6O13/H4TiO4 nanosheets was prepared by using K2Ti4O9/K2Ti6O13/ K4TiO4 complex as raw material through proton exchange, intercalation, and exfoliating reaction, respectively. The TiO2
nanocrystals with different crystal structures and morphologies were synthesized through hydrothermal reaction by using
NH4F, HCl, H2O2 and NH3·H2O as morphology-controlling agents. The results showed that the photocatalytic degradation
efficiency of NH4F-TiO2 nanocrystals on rhodamine B solution was the highest (78.5%), which was about 1.02, 1.21, 1.43, 3.54 and 18.70 times of H2O2-TiO2 (77.3%), industrial TiO2 (65.0%), NH3·H2O-TiO2 (54.9%), HCl-TiO2 (22.2%) and
blank samples (4.2%). The highest photocatalytic performance of NH4F-TiO2 nanocrystals can be attributed to the fact that
its main component is anatase TiO2 with the smallest particle size and the largest specific surface area. |
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