Structural, Optical, Electrical and Photocatalytic Investigation of n-Type Zn 2+ -Doped α-Bi 2 O 3 Nanoparticles for Optoelectronics Applications.

Autor: Khan AUR; Institute of Physics, Baghdad ul Jadeed Campus, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan., Ramzan M; Institute of Physics, Baghdad ul Jadeed Campus, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan., Alanazi SJF; Department of Chemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh 11495, Saudi Arabia., Al-Mohaimeed AM; Department of Chemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh 11495, Saudi Arabia., Ali S; Department of Physics, Quaid-i-Azam University, Islamabad 45320, Pakistan., Imran M; Department of Electronics, Government College University Lahore, Lahore 54000, Pakistan., Majid MA; Institute of Physics, Baghdad ul Jadeed Campus, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan., Sarfraz MH; Botnar Institute of Musculoskeletal Sciences, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford OX3 7LD, U.K.
Jazyk: angličtina
Zdroj: ACS omega [ACS Omega] 2024 May 17; Vol. 9 (21), pp. 22650-22659. Date of Electronic Publication: 2024 May 17 (Print Publication: 2024).
DOI: 10.1021/acsomega.3c10521
Abstrakt: Herein, n-type pure and Zn 2+ -doped monoclinic bismuth oxide nanoparticles were synthesized by the citrate sol-gel method. X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), photoluminescence (PL) analysis, ultraviolet-visible (UV-vis) spectroscopy, and Hall effect measurements were used to study the effect of Zn 2+ on the structural, optical, and electrical properties of nanoparticles. XRD revealed the monoclinic stable phase (α-Bi 2 O 3 ) of all synthesized samples and the crystallite size of nanoparticles increased with increasing concentration of dopant. Optical analysis illustrated the red shift of absorption edge and blue shift of band gap with increasing concentration of dopant. Hall Effect measurements showed improved values (2.79 × 10 -5 S cm -1 and 6.89 cm 2 /V·s) of conductivity and mobility, respectively, for Zn 2+ -doped α-Bi 2 O 3 nanoparticles. The tuned optical band gap and improved electrical properties make Zn 2+ -doped α-Bi 2 O 3 nanostructures promising candidates for optoelectronic devices. The degradation of methylene blue (MB, organic dye) in pure and zinc-doped α-Bi 2 O 3 was investigated under solar irradiation. The optimum doping level of zinc (4.5% Zn 2+ -doped α-Bi 2 O 3 ) reveals the attractive photocatalytic activity of α-Bi 2 O 3 nanostructures due to electron trapping and detrapping for solar cells.
Competing Interests: The authors declare no competing financial interest.
(© 2024 The Authors. Published by American Chemical Society.)
Databáze: MEDLINE
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