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Investigating the structural, dielectric, optical and photocatalytic properties of carbon dots and palladium, platinum decorated carbon dots

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Title
Investigating the structural, dielectric, optical and photocatalytic properties of carbon dots and palladium, platinum decorated carbon dots
Author(s)
Bibi, Sheema; Shakir, Namra; Sadiq, Muhammad; Sadiq, Saima; Ullah, Inam; Khan, Qaisar; Bostan, Bushra; Ismail, Muhammad
Publication Date
2024-09
Journal
Journal of Molecular Structure, v.1312, no.Part 1
Publisher
Elsevier BV
Abstract
In this study carbon dots (CDs), palladium and platinum decorated carbon dots (Pd-CDs, Pt-CDs) were synthesized by hydrothermal method. The synthesized materials were characterized by Transmission Electron Microscope (TEM), X-ray Diffractometer (XRD), Raman spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), Photoluminescence (PL) and impedance analyzer. Photoluminescence study revealed that the CDs, Pd-CDs and Pt-CDs were fluorescent in nature. A comparative study was conducted to investigate the energy storage capacity of the different materials. The photocatalytic properties of the materials were studied through the degradation of Acid Red 4(AR-4) a member of azo dyes. For better photocatalysis optimized reaction parameters were concentration; 10 ppm, temperature; 328 K, time; 120 min and catalyst amount; 0.12 g/20 ml. Photocatalysis for Pt-CDs was observed superior than Pd-CDs and CDs. The degradation of AR-4 over Pt-CDs follows first order kinetics with rate constant of 2.2 × 10−3 min−1. Both experimental and theoretical findings revealed that the Pt decorated CDs have high catalytic activity due to its low band gap energy 1.235 eV as compared to CDs and Pd decorated CDs. Catalysts used for photodegradation exhibited exquisite regeneration capacity with minimal loss in activity. © 2024
URI
https://pr.ibs.re.kr/handle/8788114/15184
DOI
10.1016/j.molstruc.2024.138488
ISSN
0022-2860
Appears in Collections:
Center for Molecular Spectroscopy and Dynamics(분자 분광학 및 동력학 연구단) > 1. Journal Papers (저널논문)
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