Abstract

The quest for environmentally benign, low cost yet highly efficient alternative energy resources has driven an extensive research on transition metal sulfides. Herein we report the synthesis of novel ternary InTiS₃ and quaternary Ag₂InTiS₄ nanomaterial using facile hydrothermal route. These synthesized nanomaterials were employed as catalyst both for electrochemical oxygen evolution reaction (OER) as well as for the photodegradation of organic pollutants. The cyclic voltammetry results demonstrated that both InTiS₃ and Ag₂InTiS₄ exhibits admirable activity with overpotential of 230 and 100 mV, respectively, to acquire the benchmark of 10 mA cm⁻² current density. Interestingly, both the catalyst shows selective photodegradation capability for azo dyes. As-synthesized Ag₂InTiS₄ shows 85% of degradation efficiency for CR removal while InTiS₃ acquires 75% removal efficiency for MB degradation. The obtained results suggest that the synthesis of indium and silver based multinary chalcogenide nanomaterial might be the resourceful electrocatalyst and photocatalyst material in the probable energy and environmental applications.

Graphical Abstract

中文翻译：

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水热合成InTiS3和Ag2InTiS4用于电催化水氧化和光催化染料降解应用

摘要

对环境友好、低成本且高效的替代能源的追求推动了对过渡金属硫化物的广泛研究。在此，我们报道了使用简便的水热路线合成新型三元InTiS ₃和四元Ag ₂ InTiS ₄纳米材料。这些合成的纳米材料可用作电化学析氧反应（OER）以及有机污染物光降解的催化剂。循环伏安法结果表明，InTiS ₃和Ag ₂ InTiS ₄均表现出良好的活性，过电位分别为230和100 mV，获得10 mA cm ^-2电流密度的基准。有趣的是，两种催化剂都表现出对偶氮染料的选择性光降解能力。合成后的Ag ₂ InTiS ₄显示出85% 的CR 去除效率，而InTiS _{3 的}MB 去除效率为75%。所得结果表明，铟和银基多元硫属化物纳米材料的合成可能是能源和环境应用中资源丰富的电催化剂和光催化剂材料。

图形概要