Synthesis of carbon quantum dots (CQD) from Archidendron bubalinum pods and its compatibility for voltammetric detection of cadmium ion

IF 3.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Vacuum Pub Date : 2025-01-07 DOI:10.1016/j.vacuum.2025.114023

Dian Ayu Setyorini , Muhamad Allan Serunting , Wa Ode Sri Rizki , Nandang Mufti , Vienna Saraswaty , Muhammad Aziz , Risa Suryana , Wilman Septina , Zulhadjri , Henry Setiyanto

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Abstract

Carbon quantum dots (CQD) have been acknowledged as novel carbon-based materials with distinctive optical properties and excellent performance for detecting cadmium ion (Cd²⁺). Herein we report a facile synthesis of CQD from a natural source that is Archidendron bubalinum pods (CQDAb) and its application for an electroanalysis of Cd²⁺. The synthesized CQDAb was found emitting a strong blue fluorescence. Moreover, the synthesized CQDAb showed lower band gap (4.04 eV) than that of CQD synthesized from graphite (6.09 eV). For electroanalysis purposes, the CQDAb was used as a modifier for carbon paste electrode-based reduced-graphene oxide (CPE/r-GO/CQDAb). The composite of rGO/CQDAb could enhance the performance of CPE/CQDAb and CPE/rGO. The prepared CPE/rGO/CQDAb shows a greater linearity for Cd²⁺ detection when tested using a square wave voltammetry method. These findings clearly show promising results for preparing CQD-based natural source, specifically A. bubalinum pods, and its application for a Cd²⁺ sensor.

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来源期刊

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.