Synthesis of MoS2-loaded Co3O4 nanocrystals for endorsed photocatalytic reduction of mercury (II) ions under visible light

被引：6

作者：

Al-Namshah, K. S. ^{[1
]}

机构：

[1] Imam Mohammad Ibn Saud Islamic Univ IMSIU, Coll Sci, Chem Dept, Riyadh 11623, Saudi Arabia

来源：

OPTICAL MATERIALS | 2023年 / 142卷

关键词：

Sol; -gel; Surfactant; Nanocrystals; Heavy metals; Visible-light photocatalysts; FACILE SYNTHESIS; HETEROJUNCTION; PHOTODEGRADATION; NANOCOMPOSITES; DEGRADATION; PERFORMANCE; DEPOSITION; NANOSHEETS; SUPERIOR; REMOVAL;

D O I：

10.1016/j.optmat.2023.114114

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Heavy metal ions in water can cause significant hazards to all living organisms in the ecosystems. This work employs a sol-gel-based process to synthesize a highly photoactive heterojunction composed of molybdenum disulfide (MoS2) and cobalt oxide (Co3O4) nanocrystals. The MoS2/Co3O4 heterojunctions exhibited mesoporous surfaces and high surface areas of 137-161 m2 g � 1. Also, the absorption of visible light improved by introducing MoS2 due to the lessening of the bandgap to 1.66 eV for 15% MoS2/Co3O4.The amended photocatalytic reduction of mercury ions (Hg2+) is realized within 50 min of light irradiation over 2.4 gL-1 of 15% MoS2/Co3O4 at a rate of 36.27 & mu;M min-1 in 30 min and five-times recyclability. The superb action of MoS2/Co3O4 is attributed to the upgraded light absorption and effective separation of carriers.

引用

页数：8

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