Adsorption of Cr(VI) by Nanosized Rutile under the Action of UV Radiation

被引：3

作者：

Pechishcheva, N. V. ^{[1
]}

Ordinartsev, D. P. ^{[1
]}

Valeeva, A. A. ^{[2
,3
]}

Zaitseva, P. V. ^{[1
]}

Korobitsyna, A. D. ^{[1
]}

Sushnikova, A. A. ^{[1
,3
]}

Kim, A. V. ^{[1
]}

Shunyaev, K. Yu. ^{[1
]}

Rempel', A. A. ^{[1
,3
]}

机构：

[1] Russian Acad Sci, Inst Met, Ural Branch, Ekaterinburg 620016, Russia

[2] Russian Acad Sci, Inst Solid State Chem, Ural Branch, Ekaterinburg 620108, Russia

[3] Ural Fed Univ, Ekaterinburg 620002, Russia

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2023年 / 97卷 / 02期

基金：

俄罗斯科学基金会;

关键词：

rutile; chromium(VI); ultraviolet; adsorption; CHROMIUM; OXIDATION; SORPTION; TIO2;

D O I：

10.1134/S0036024423020206

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

the properties of nanosized sorbents prepared by high-energy milling from microcrystalline powder of titanium dioxide of rutile modification have been studied. It was established that milling to an average crystallite size of similar to 30 nm and ultraviolet illumination significantly improved the sorption properties of rutile with respect to chromium compared with those of the starting material and the ability of Cr(VI) to be reduced to Cr(III) in its presence. The maximum removal of Cr(VI) from aqueous solutions with a concentration of 50 mg/L was achieved under UV illumination in an acetate buffer medium at pH 4-5 and a content of ground rutile of 16.7 g/L. A mechanism of adsorption was proposed.

引用

页码：392 / 396

页数：5

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