Sarkar Nityananda, Mishra Soumya Ranjan, Gadore Vishal, Panigrahi Biswaranjan, Ahmaruzzaman Md
Department of Chemistry, National Institute of Technology Silchar Assam 788010 India
Nanoscale Adv. 2024 Apr 9;6(11):2741-2765. doi: 10.1039/d4na00184b. eCollection 2024 May 29.
Nanomaterials play a decisive role in environmental applications such as water purification, pollutant monitoring, and advanced oxidation-based remediation processes, particularly in semiconductor and metal sulfide-based photocatalysis. Metal sulfides are ideal for photocatalysis because of their unique optical, structural, and electronic characteristics. These properties enable the effective use of solar energy to drive various catalytic reactions with potential uses in environmental remediation with sustainable energy production. Among them, nickel sulfides (NiS) stand out for their narrow band gaps, high stability, and cost-effectiveness. This review thoroughly analyzes recent advancements in employing nickel-sulfide-based nanostructures for water decontamination. It begins by addressing environmental material needs and emphasizing the properties of nickel sulfide. To improve photocatalytic performance, controlled processes that affect the active structure, shape, composition, and size of nickel sulfide photocatalysts are examined, along with their synthesis methods. The heart of the review article is a detailed analysis of the modification of NiS through metal and non-metal doping, heterojunction, and nanocomposite formation for enhanced photocatalytic performance. The discussion also includes metal-modified nanostructures, metal oxides, and carbon-hybridized nanocomposites. This study underscores notable advancements in the degradation efficiency of NiS photocatalysts, rivaling their costly noble-metal counterparts. The analysis concludes with potential future directions for nickel sulfide-based photocatalysts in sustainable environmental remediation.
纳米材料在水净化、污染物监测和基于高级氧化的修复过程等环境应用中发挥着决定性作用，尤其是在基于半导体和金属硫化物的光催化方面。由于其独特的光学、结构和电子特性，金属硫化物是光催化的理想材料。这些特性使得能够有效利用太阳能驱动各种催化反应，在环境修复和可持续能源生产方面具有潜在用途。其中，硫化镍（NiS）因其窄带隙、高稳定性和成本效益而脱颖而出。本综述全面分析了采用基于硫化镍的纳米结构进行水净化的最新进展。首先阐述了环境材料需求并强调了硫化镍的特性。为了提高光催化性能，研究了影响硫化镍光催化剂活性结构、形状、组成和尺寸的可控过程及其合成方法。综述文章的核心是详细分析通过金属和非金属掺杂、异质结和纳米复合材料的形成对NiS进行改性以提高光催化性能。讨论还包括金属改性的纳米结构、金属氧化物和碳杂化纳米复合材料。本研究强调了NiS光催化剂降解效率方面的显著进展，可与昂贵的贵金属同类产品相媲美。分析最后给出了基于硫化镍的光催化剂在可持续环境修复方面潜在的未来发展方向。
