Tunable plasmonic metals and semiconductor nanomaterials remain predominant as inorganic catalytic materials for photochemistry. In particular, atomically thin two-dimensional (2D) semiconductor nanomaterials have opened up a new horizon of possibilities for photodetection and photocatalysis devices. In this context, the present review focuses on the fundamentals of plasmonic-metal/2D-semiconductor hybrids and their applications for state-of-the-art photodetectors and photocatalysis devices. Recent developments, intrinsic features, and unique advantages of 2D semiconductors, plasmonic metals, and their nanocomposites for photodetection and photocatalysis fields are introduced, followed by an overview of synthesis strategies. Then, their nanophotonics-related properties are discussed from the propagating (local) surface plasmon polaritons of metallic nanostructures to the interfacial properties of the hybrids, especially in terms of relevant fundamental principles and influencing factors. Furthermore, primary factors and strategies for regulating their photochemistry-related properties are examined from the perspective of plasmonic energy transfer between their interfaces. Moreover, recent advances in the use of plasmonic-metal/2D-semiconductor nanocomposites in photodetection and photocatalysis for energy-related and environmental processes, including photocatalytic water splitting, CO₂ reduction, N₂ fixation, organic synthesis, and pollutant degradation or removal, are highlighted. Finally, perspectives on the challenges and future avenues of exploration for overcoming critical bottlenecks are presented based on recent achievements in the development of plasmonic-metal/2D-semiconductor hybrids.

可调谐等离子体金属和半导体纳米材料作为光化学的无机催化材料仍然占主导地位。特别是，原子级薄的二维（2D）半导体纳米材料为光电探测和光催化装置开辟了新的可能性。在此背景下，本综述侧重于等离子体金属/二维半导体杂化物的基本原理及其在最先进的光电探测器和光催化装置中的应用。介绍了二维半导体、等离子体金属及其纳米复合材料在光电探测和光催化领域的最新发展、内在特征和独特优势，然后概述了合成策略。然后，从金属纳米结构的传播（局部）表面等离子体激元到杂化物的界面特性，特别是在相关的基本原理和影响因素方面，讨论了它们的纳米光子学相关特性。此外，从界面之间等离子体能量转移的角度研究了调节其光化学相关特性的主要因素和策略。此外，等离子体金属/二维半导体纳米复合材料在光电探测和光催化中用于能源相关和环境过程的最新进展，包括光催化水分解、CO 从界面之间等离子体能量转移的角度研究了调节其光化学相关特性的主要因素和策略。此外，等离子体金属/二维半导体纳米复合材料在光电探测和光催化中用于能源相关和环境过程的最新进展，包括光催化水分解、CO 从界面之间等离子体能量转移的角度研究了调节其光化学相关特性的主要因素和策略。此外，等离子体金属/二维半导体纳米复合材料在光电探测和光催化中用于能源相关和环境过程的最新进展，包括光催化水分解、CO₂还原、N ₂固定、有机合成和污染物降解或去除，被突出。最后，基于等离子-金属/2D-半导体混合材料的最新进展，提出了克服关键瓶颈的挑战和未来探索途径的观点。