材料研究学报  2013, Vol. 27 Issue (6): 583-588

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Pt/BiOCl纳米结构的制备及其光催化性能*

崔占奎1 米立伟1 法文君1 郑 直1 曾大文2

1. 许昌学院表面微纳米材料研究所 能量储存与转换材料河南省重点实验室 许昌 461000 2. 华中科技大学材料科学与工程学院 材料成型与磨具技术国家重点实验室 武汉 430074

Preparation and Photocatalytic Performance of Pt/BiOCl Nanostructures

CUI Zhankui1** MI Liwei1 FA Wenjun1 ZHENG Zhi1 ZENG Dawen2

1. Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang 461000 2. State Key Laboratory of Material Processing and Die & Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074

崔占奎, 米立伟, 法文君, 郑 直, 曾大文. Pt/BiOCl纳米结构的制备及其光催化性能*[J]. 材料研究学报, 2013, 27(6): 583-588.
. Preparation and Photocatalytic Performance of Pt/BiOCl Nanostructures[J]. Chinese Journal of Materials Research, 2013, 27(6): 583-588.

摘要 相关文章 Metrics 全文: PDF(2302 KB)   摘要: 采用溶剂热法-浸渍法在低温条件下制备了Pt/BiOCl纳米结构, 用XRD、EDS、SEM、(HR)TEM、N2吸附-脱附仪、UV-Vis吸收光谱仪、荧光探针技术对样品进行了表征, 考察了其在氙灯辐照下对气相甲苯的光催化降解性能。结果表明, Pt/BiOCl纳米结构具有良好的结晶度, 样品BET比表面积达到28.48 m2/g; 其在紫外光区和可见光区具有良好的光吸收性质; 而且Pt修饰也使样品表面羟基自由基生成能力得到明显增强。Pt/BiOCl纳米结构对气相甲苯的光催化降解效率比未Pt修饰的BiOCl纳米结构提高了约70%, 比BiOCl纳米片提高了6.6倍, 同时, Pt修饰还能抑制甲醛生成、避免更大危害性的二次污染。Pt/BiOCl纳米结构对气相甲苯光催化效率的提高与其较大的比表面积、增强的光吸收性质和高效的光生载流子分离能力有关。 Abstract：ASTRACT Pt/BiOCl nanostructures were prepared by a facile low-temperature solvothermal-impregnation method and were characterized by XRD, EDS, SEM, (HR)TEM, N2 Adsorption-desorption, UV-Vis Absorption Spectroscopy and fluorescent probe method. The photocatalytic performance was evaluated by photodegrading gas-phase toluene under Xe light irradiation. The results show that Pt/BiOCl nanostructures have good crystallinity and exhibit a BET specific surface area of 28.48 m2/g. The samples display excellent optical absorption properties in the range of both UV light and visible light. The ability of forming hydroxyl radicals on the surface of photocatalysts was also enhanced a lot. The photocatalytic performance was improved obviously. Under Xe light irradiation, the photocatalytic efficiency increased by 70% compared with the sample of BiOCl nanostructures without being modified with Pt nanoparticles. And that value increased by 6.6 times when being compared with that of BiOCl nanosheets. Additionally, the modification of Pt nanoparticles on the surface of BiOCl nanostructures also played a part in inhibiting the formation of formaldehyde and thus preventing more hazardous secondary pollution during the photocatalysis of toluene. The improved photocatalytic activity of Pt/BiOCl nanostructures associates with their efficient separation of photogenerated carriers.      ZTFLH:  分类号 TB321   基金资助:国家重点基础研究发展计划2009CB939705和2009CB939702,国家自然科学基金21007053和21001090, 河南省高校科技创新团队支持计划2012IRTSTHN021资助项目。 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 44.8K 链接本文: https://www.cjmr.org/CN/      或      https://www.cjmr.org/CN/Y2013/V27/I6/583 [1] 路来福,高芒来,杨森锋,谷 峥,刘月宁. 两性表面活性剂改性膨润土的制备及其对环丙沙星的吸附性能[J]. 材料研究学报, 2013, 27(6): 576-582. [2] 刘佳,倪文,于淼. 全尾砂废石骨料混凝土的制备和性能*[J]. 材料研究学报, 2013, 27(6): 615-621. [3] 候姣姣,梅甫定. 磷石膏基材料的宏观性能与孔结构的关系*[J]. 材料研究学报, 2013, 27(6): 631-640. Viewed Full text Abstract Cited   Shared      Discussed