Alexander Romanchenko

TL;DR: In this paper, the S L- and Au L 3 -edge X-ray absorption fine structure and Xray photoelectron spectra of nanoscale Au-S products formed via the reduction of aqueous HAuCl 4 by sulfide ions and immobilized onto graphite have been acquired.

TL;DR: In this paper, the surface structures of arsenopyrite were investigated using ex situ atomic force microscopy (AFM), scanning tunneling microscopy and spectroscopy (STM/STS) and X-ray photoelectron spectroscopic (XPS) techniques.

TL;DR: In this article, gold species spontaneously deposited on pyrite and chalcopyrite, pyrrhotite, galena, sphalerite from HAuCl4 solutions at room temperature, as well as the state of the reacted mineral surfaces have been characterized using synchrotron radiation X-ray photoelectron spectroscopy (SR-XPS), scanning tunneling microscopy and tunneling spectrography (STM/STS).

TL;DR: In this article, the nanoscale products deposited on pyrite at room temperature from 01mM tetrachloroaurate or silver nitrate aqueous solutions and colloidal solutions (sols) of Au 0, Ag 0 and gold sulfide nanoparticles, which were prepared beforehand by the reduction of the Au(III) and Ag(I) complexes with sodium citrate, borohydride or sulfide, have been studied using X-ray photoelectron spectroscopy (XPS), XAS, scanning tunneling microscopy (STM

TL;DR: In this paper, a resistive switching effect was found in the tunneling spectra measured in air at the smaller uncapped Ag NPs deposited on HOPG and was interpreted in terms of Ag transfer between the particle and the probe.