通过水解氧化钽氧乙基酯 Ta8(μ3-O)2(μ-O)8(μ-OEt)6(OEt)14 制备氧化钽纳米粒子的特性和光催化研究。

Characterization and photocatalytic study of tantalum oxide nanoparticles prepared by the hydrolysis of tantalum oxo-ethoxide Ta8(μ3-O)2(μ-O)8(μ-OEt)6(OEt)14.

机构信息

Department of Chemistry, Motilal Nehru National Institute of Technology, Allahabad, 211004, India.

Department Chemie und Biochemie, Universität München, Butenandtstraße 5-13, 81377 München, Germany.

出版信息

Beilstein J Nanotechnol. 2014 Jul 18;5:1082-90. doi: 10.3762/bjnano.5.121. eCollection 2014.

DOI:10.3762/bjnano.5.121

PMID:25161843

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4143119/

Abstract

Ta8(μ3-O)2(μ-O)8(μ-OEt)6(OEt)14 (1) was obtained by the controlled hydrolysis of tantalum ethoxide Ta(OEt)5 in the presence of ammonia. Compound 1 is considered as the intermediate building block in the sol-gel polymerization of Ta(OEt)5. Further hydrolysis of compound 1 yielded nanoparticles of Ta2O5, which were characterized by various techniques such as TGA-DTA-DSC, UV-vis DRS, XRD, SEM, TEM, particle size analyzer (DLS) and the Brunauer-Emmett-Teller (BET) method. The band gap of the particles was calculated by using the Tauc plot. The photocatalytic activity of Ta2O5 nanoparticles was tested by the degradation of the organic dye rhodamine B.

摘要

Ta8(μ3-O)2(μ-O)8(μ-OEt)6(OEt)14 (1) 通过在氨存在下控制水解五乙氧基钽 Ta(OEt)5 得到。化合物 1 被认为是五乙氧基钽 Ta(OEt)5 的溶胶-凝胶聚合中的中间构建块。化合物 1 的进一步水解生成了 Ta2O5 的纳米粒子，这些纳米粒子通过各种技术进行了表征，例如 TGA-DTA-DSC、UV-vis DRS、XRD、SEM、TEM、粒度分析仪（DLS）和 Brunauer-Emmett-Teller（BET）方法。通过 Tauc 图计算了粒子的带隙。通过降解有机染料罗丹明 B 测试了 Ta2O5 纳米粒子的光催化活性。