Uthappa U T, Nehra Monika, Kumar Rajesh, Dilbaghi Neeraj, Marrazza Giovanna, Kaushik Ajeet, Kumar Sandeep
School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea; Department of Bioengineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, 602105, India.
Department of Mechanical Engineering, University Institute of Engineering and Technology, Panjab University, Chandigarh 160014, India.
Adv Colloid Interface Sci. 2023 Dec;322:103024. doi: 10.1016/j.cis.2023.103024. Epub 2023 Oct 13.
Recently, 2D layered transition metal dichalcogenides (TMDCs) with their ultrathin sheet nanostructure and diversified electronic structure have drawn attention for various advanced applications to achieve high-performance parameters. Unique 2D TMDCs mainly comprise transition metal and chalcogen element where chalcogen element layers sandwich the transition metal element layer. In such a case, various properties can be enhanced and controlled depending on the targeted application. Among manipulative 2D TMDCs, tungsten disulphide (WS) is one of the emerging nano-system due to its fascinating properties in terms of direct band gap, higher mobility, strong photoluminescence, good thermal stability, and strong magnetic field interaction. The advancement in characterization techniques, especially scattering techniques, can help in study of opto-electronic properties of 2D TMDCs along with determination of layer variations and investigation of defect. In this review, the fabrication and applications are well summarized to optimize an appropriate WS-TMDCs assembly according to focused field of research. Here, the scientific investigations on 2D WS are studied in terms of its structure, role of scattering techniques to study its properties, and synthesis routes followed by its potential applications for environmental remediation (e.g., photocatalytic degradation of pollutants, gas sensing, and wastewater treatment) and biomedical domain (e.g., drug delivery, photothermal therapy, biomedical imaging, and biosensing). Further, a special emphasis is given to the significance of 2D WS as a substrate for surface-enhanced Raman scattering (SERS). The discussion is further extended to commercial and industrial aspects, keeping in view major research gaps in existing research studies.
最近，具有超薄片状纳米结构和多样化电子结构的二维层状过渡金属二硫属化物（TMDCs）因其在各种先进应用中实现高性能参数而受到关注。独特的二维TMDCs主要由过渡金属和硫属元素组成，其中硫属元素层夹着过渡金属元素层。在这种情况下，可以根据目标应用增强和控制各种性能。在可操控的二维TMDCs中，二硫化钨（WS）因其在直接带隙、更高迁移率、强光致发光、良好热稳定性和强磁场相互作用等方面的迷人特性，成为新兴的纳米系统之一。表征技术的进步，特别是散射技术，有助于研究二维TMDCs的光电特性，同时确定层变化和缺陷研究。在这篇综述中，对制造和应用进行了很好的总结，以便根据重点研究领域优化合适的WS-TMDCs组装。在这里，从二维WS的结构、散射技术在研究其性能中的作用、合成路线以及其在环境修复（如污染物的光催化降解、气体传感和废水处理）和生物医学领域（如药物递送、光热疗法、生物医学成像和生物传感）的潜在应用等方面对其进行了科学研究。此外，特别强调了二维WS作为表面增强拉曼散射（SERS）衬底的重要性。讨论进一步扩展到商业和工业方面，同时考虑到现有研究中的主要研究差距。
