超声辅助微波法制备掺银的硫化镉纳米粒子。

Ultrasound-assisted microwave preparation of Ag-doped CdS nanoparticles.

机构信息

Institute of Nanoscience, Nanjing University of Aeronautics and Astronautics, No. 29, Yudao Street, Nanjing 210016, PR China.

出版信息

Ultrason Sonochem. 2010 Mar;17(3):534-40. doi: 10.1016/j.ultsonch.2009.11.008. Epub 2009 Nov 18.

DOI:10.1016/j.ultsonch.2009.11.008

PMID:20006938

Abstract

Ag-doped CdS nanoparticles were synthesized by an ultrasound-assisted microwave synthesis method. The X-ray diffraction patterns reveal a structural evolution from cubic to hexagonal with increasing molar ratios of Ag(+)/Cd(2+) from 0% to 5%. It shows that the Ag-doped hexagonal CdS nanoparticles are polycrystal. The X-ray photoelectron spectroscopy of the CdS nanoparticles doping with 5% Ag(+) shows that the doped Ag in CdS is metallic. Simultaneously, the characteristic Raman peaks of the CdS nanoparticles enhance with increasing Ag(+) concentrations. The photocatalytic activity of different Ag-doped samples show a reasonable change due to different ratios of Ag which doped into CdS.

摘要

采用超声辅助微波合成法合成了掺银的 CdS 纳米粒子。X 射线衍射图谱显示，随着 Ag(+) / Cd(2+)摩尔比从 0%增加到 5%，结构从立方相向六方相演变。这表明掺银的六方 CdS 纳米粒子是多晶的。X 射线光电子能谱表明，CdS 纳米粒子中掺杂的 Ag 为金属态。同时，随着 Ag(+)浓度的增加，CdS 纳米粒子的特征拉曼峰增强。不同 Ag 掺杂样品的光催化活性由于掺杂到 CdS 中的 Ag 比例不同而发生了合理的变化。