Abstract

The interaction of O₂, H₂O, and SO₂ on silver powder prepared from the reduction of AgNO₃ by NaBH₄ was studied by surface-enhanced Raman scattering (SERS) at room temperature. The presence of H₂O of about 10³ Pa and O₂ of about 10⁴-10⁵ Pa was necessary for observation of SERS peaks of SO₃^2- and SO₄^2-. The superoxide ion O₂^- was observed under high partial pressure for O₂ conditions. SERS peaks of atomic oxygen, superoxide ion O₂^-, SO₃^2-, and SO₄^2- disappeared on evacuation. SERS peaks of surface species such as Ag₂O did not disappear on evacuation.

Using CaF₂:Eu³⁺ powder as a luminescent probe to detect Cr₂O₇ ^2- ions: a new application on the environmental conservation of an old optical material

Jianfu Pan, Kailing Zhong, Zhen Zhang, Wenting Chen, Yanping Lin, Guoqiang Wang, Lingyun Li, and Yan Yu
Opt. Mater. Express 8(9) 2782-2794 (2018)

Preparation and SERS applications of Ta₂O₅ composite nanostructures

Liu Mingjin, Shuo Cheng, Xuejian Du, Jing Li, Qianqian Peng, Chenlong Zhao, Yaoyang Wang, and Xianwu Xiu
Opt. Express 31(23) 38699-38714 (2023)

Large-area uniform Ag nanostructure films prepared by a heat reduction method for SERS application

Qingqing Zhang, Xueqin Wang, Jinguo Jiang, Hen Yao, Qian Nie, and Zhongchen Bai
Opt. Mater. Express 11(5) 1504-1514 (2021)

SERS-active Au/SiO₂ clouds in powder for rapid ex vivo breast adenocarcinoma diagnosis

Elisa Cepeda-Pérez, Tzarara López-Luke, Pedro Salas, Germán Plascencia-Villa, Arturo Ponce, Juan Vivero-Escoto, Miguel José-Yacamán, and Elder de la Rosa
Biomed. Opt. Express 7(6) 2407-2418 (2016)

Superhydrophobic silver film as a SERS substrate for the detection of uric acid and creatinine

Yudong Lu, Changji Wu, Ruiyun You, Yang Wu, Huiying Shen, Lanjin Zhu, and Shangyuan Feng
Biomed. Opt. Express 9(10) 4988-4997 (2018)