Recent advances in the application of noble metal nanoparticles in colorimetric sensors for lead ions,Environmental Science: Nano

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Recent advances in the application of noble metal nanoparticles in colorimetric sensors for lead ions
Environmental Science: Nano ( IF 5.8 ) Pub Date : 2021-3-6 , DOI: 10.1039/d0en00963f
Harpreet Singh _{1,

2,

3,

4,

5} , Amy Bamrah _{1,

2,

3,

4,

5} , Sanjeev K. Bhardwaj _{5,

6,

7} , Akash Deep _{5,

8,

9} , Madhu Khatri _{1,

2,

3,

4,

5} , Richard J. C. Brown _{10,

11,

12} , Neha Bhardwaj _{1,

2,

3,

4,

5} , Ki-Hyun Kim _{13,

14,

15,

16}

Affiliation

Department of Biotechnology
University Institute of Engineering Technology (UIET)
Panjab University
Chandigarh
India
Amesys India
Ambala Cantt
Central Scientific Instruments Organization
Chandigarh 160030
Environment Department
National Physical Laboratory
UK
Department of Civil and Environmental Engineering
Hanyang University
Seoul 04763
Republic of Korea

Recent developments in nanotechnology and engineering have produced a plethora of nanomaterials with amazing physical/chemical properties and enhanced sensing potential for various heavy metals in the environment. Noble metal nanoparticles (NPs), particularly those made from gold and silver, have attracted a great deal of attention mainly due to ease of synthesis, a high degree of surface functionalization, biocompatibility, and tunable physico-chemical properties. The use of noble metal nanoparticles has enabled fast and multiplexed detection of metal ions with excellent sensitivity and selectivity. The optical characteristics of Au–Ag NPs and noble metal-based nanozymes enable the detection of metals based on colorimetry. Color changes of these metal nanoparticles upon interaction with lead ions are based on inter-particle interactions (aggregation/dis-aggregation) and changes in surface modification. This review presents up-to-date information on the applications of noble metal NPs in the colorimetric sensing of lead (Pb²⁺) ions with special attention on selectivity, sensitivity, and practicality. The extensive potential of noble metal nanomaterials as the next-generation and on-site sensing tools has been explored for the rapid detection of lead ions in environmental matrices.

中文翻译：

贵金属纳米粒子在铅离子比色传感器中的应用新进展

纳米技术和工程学的最新发展产生了许多具有令人惊叹的物理/化学性质并增强了对环境中各种重金属的感测潜力的纳米材料。贵金属纳米粒子（NPs），尤其是由金和银制成的纳米粒子，已经引起了广泛的关注，主要是由于其易于合成，高度的表面功能化，生物相容性和可调节的理化性质。贵金属纳米颗粒的使用使得能够以优异的灵敏度和选择性对金属离子进行快速和多重检测。Au-Ag NPs和基于贵金属的纳米酶的光学特性使得能够根据比色法检测金属。这些金属纳米颗粒与铅离子相互作用时的颜色变化是基于颗粒间的相互作用（聚集/解聚）和表面改性的变化。这篇综述提供了有关贵金属NP在铅（Pb）比色检测中的应用的最新信息²⁺）离子，特别关注选择性，灵敏度和实用性。为了快速检测环境基质中的铅离子，已经探索了贵金属纳米材料作为下一代和现场传感工具的广泛潜力。

更新日期：2021-03-08

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