Nonstoichiometry, structure and properties of nanocrystalline oxides, carbides and sulfides

被引：14

作者：

Valeeva, Albina A. ^{[1
,2
]}

Rempel, Andrey A. ^{[1
,2
,3
]}

Rempel, Svetlana, V ^{[1
,2
]}

Sadovnikov, Stanislav, I ^{[1
]}

Gusev, Aleksandr, I ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Solid State Chem, Ural Branch, Ul Pervomayskaya 91, Ekaterinburg 620990, Russia

[2] Ural Fed Univ, Ul Mira 19, Ekaterinburg 620002, Russia

[3] Russian Acad Sci, Ural Branch, Inst Met, Ul Amundsena 101, Ekaterinburg 620016, Russia

来源：

RUSSIAN CHEMICAL REVIEWS | 2021年 / 90卷 / 05期

基金：

俄罗斯科学基金会;

关键词：

PHOTOCATALYTIC HYDROGEN EVOLUTION; CRYSTALLINE SILVER SULFIDE; TITANIUM MONOXIDE; OPTICAL-PROPERTIES; PARTICLE-SIZE; CDS NANOPARTICLES; THERMAL-EXPANSION; AQUEOUS-SOLUTIONS; PHASE-COMPOSITION; NIOBIUM CARBIDE;

D O I：

10.1070/RCR4967

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The results of recent experimental studies of the influence of the size of oxide, carbide and sulfide nanoparticles on changes in their nonstoichiometry are analyzed and generalized. In relation to intrinsically nonstoichiometric titanium oxides and niobium and vanadium carbides, on the one hand, and stoichiometric silver sulfides, on the other hand, it is shown that a decrease in the particle size to the nano scale has a strong impact on the chemical composition of nanocrystalline compounds, viz., it leads to the occurrence of or increase in nonstoichiometry. A conclusion is drawn that interplay between the particle size and nonstoichiometry is common to all solid nanocrystalline substances and should be taken into account in studies on the synthesis, structure and properties of these systems.

引用

页码：601 / 626

页数：26

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