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Cadmium telluride quantum dots have emerged as versatile nanomaterials for constructing highly sensitive analytical platforms for trace contaminant detection

Hamza Farhan Abu OwidaMedical Engineering Department, Faculty of Engineering, Al-Ahliyya Amman University, Amman 19328, JordanAsokan VasudevanFaculty of Business and Communications, INTI International University, 71800 Negeri Sembilan, MalaysiaSuleiman MohammadResearch follower, INTI International University, 71800 Negeri Sembilan, MalaysiaG. PadmaPriyaDepartment of Chemistry and Biochemistry, School of Sciences, JAIN (Deemed to be University), Bangalore, Karnataka, IndiaRahul SaxenaDepartment of Biochemistry, Sharda University, knowledge Park III, Greater Noida, IndiaRuchi BhartiDepartment of Chemistry, University Institute of Sciences, Chandigarh University, Mohali, Punjab, IndiaSubhashree RayDepartment of Biochemistry, IMS and SUM Hospital, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha-751003, IndiaSardor SabirovDepartment of General Professional Sciences, Mamun University Uzbekistan, Khiva, UzbekistanErkin KholiyarovDepartment of Information Technology and Exact Sciences, Termez University of Economics and Service, Termez, UzbekistanNegin AsadiYoung Researchers and Elite Club, Tehran Branch, Islamic Azad University, Tehran, Iran

2026en

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Litsenziya: cc-by-nc-nd

ABI

Annotatsiya

Cadmium telluride (CdTe) quantum dots have emerged as versatile nanomaterials for constructing highly sensitive analytical platforms for trace contaminant detection. Their unique size-dependent electronic structure, tunable surface chemistry, and compatibility with hybrid interfaces enable diverse signal transduction modes across electrochemical, electrochemiluminescent, and redox-responsive sensing systems. This review systematically examines recent advances in CdTe quantum-dot-based sensors, focusing on their roles in converting molecular recognition events into measurable analytical signals through distinct but interconnected transduction strategies. This review provides, for the first time, a unified perspective on CdTe quantum-dot (QD) sensing platforms categorized according to electrochemical detection architectures, electrochemiluminescent emission systems, and redox-driven signal modulation approaches. Particular attention is given to hybrid nanointerfaces, doped QD systems, and molecularly engineered recognition layers that enhance sensitivity and analytical performance in trace-level contaminant detection. The integration of CdTe quantum dots with carbon nanostructures, biomolecular recognition elements, and redox-active species is highlighted as a key design direction for improving selectivity and signal efficiency. Finally, emerging trends in system integration, analytical reliability, and application-oriented development are outlined to support future advancements in environmental monitoring and food safety analysis.

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DOI: 10.1016/j.arres.2026.100202

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