Abstract Multifunctionality and recyclability of Ag nanorods array (well known tas potential SERS substrates) have been explored for other imperative applications like water purification by photocatalytic dye degradation, hydrogen evolution, antibacterial activity, and SERS based detection after sulfurization. An easy and green approach of exposing the Ag nanorods array to sewage H2S gas has been applied for sulfurization. This resulted in multifunctional Ag-Ag2S nanoheterostructures manifesting a metal-semiconductor heterojunction with exceptional optical, electronic and photocatalytic properties. The Ag nanorods array on glass as well as ITO substrates were fabricated by glancing angle deposition technique and then sulfurized by exposing to a sewage site, resulting in Ag-Ag2S nanoheterostructures at ambient conditions and confirmed by several morphological, structural and elemental characterization tools. The fabricated nanoheterostructures are utilized efficiently for important applications including dye degradation under visible light irradiation within 30 min, photoelectrochemical reaction for hydrogen evolution, surface enhanced Raman scattering based detection and significant bactericidal effect. The salient features of synthesized Ag-Ag2S nano-heterostructures comprise an important self-sustainable approach which is pivotal in the present research scenario that requires significant multidimensional applications.

中文翻译：

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用于利用污水气体开发 Ag-Ag2S 纳米异质结构的自持和可回收银纳米棒：在光催化水净化、析氢、SERS 和抗菌活性中的应用

摘要 Ag 纳米棒阵列（众所周知的 tas 电位 SERS 基底）的多功能性和可回收性已被探索用于其他必要的应用，如通过光催化染料降解、析氢、抗菌活性和硫化后基于 SERS 的检测来净化水。将 Ag 纳米棒阵列暴露于污水 H2S 气体中的一种简单且绿色的方法已用于硫化。这导致多功能Ag-Ag2S纳米异质结构表现出具有优异光学、电子和光催化性能的金属-半导体异质结。玻璃和 ITO 基板上的 Ag 纳米棒阵列是通过掠射角沉积技术制造的，然后通过暴露于污水现场进行硫化，在环境条件下产生 Ag-Ag2S 纳米异质结构，并通过几种形态、结构和元素表征工具证实。所制造的纳米异质结构可有效地用于重要的应用，包括在 30 分钟内可见光照射下的染料降解、析氢的光电化学反应、基于表面增强拉曼散射的检测和显着的杀菌效果。合成的 Ag-Ag2S 纳米异质结构的显着特征包括一种重要的自我维持方法，这在需要大量多维应用的当前研究场景中至关重要。所制造的纳米异质结构可有效地用于重要的应用，包括在 30 分钟内可见光照射下的染料降解、析氢的光电化学反应、基于表面增强拉曼散射的检测和显着的杀菌效果。合成的 Ag-Ag2S 纳米异质结构的显着特征包括一种重要的自我维持方法，这在需要大量多维应用的当前研究场景中至关重要。所制造的纳米异质结构可有效地用于重要的应用，包括在 30 分钟内可见光照射下的染料降解、析氢的光电化学反应、基于表面增强拉曼散射的检测和显着的杀菌效果。合成的 Ag-Ag2S 纳米异质结构的显着特征包括一种重要的自我维持方法，这在需要大量多维应用的当前研究场景中至关重要。