{"id":10019,"date":"2026-04-22T15:59:03","date_gmt":"2026-04-22T15:59:03","guid":{"rendered":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/?p=10019"},"modified":"2026-04-27T03:08:35","modified_gmt":"2026-04-27T03:08:35","slug":"pjc0826","status":"publish","type":"post","link":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2026\/04\/22\/pjc0826\/","title":{"rendered":"Mg-Induced Structural Transitions and Blue-Shift in the Optical Properties of ZnO"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"10019\" class=\"elementor elementor-10019\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-70b0b4e e-flex e-con-boxed e-con e-parent\" data-id=\"70b0b4e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-502f435 e-con-full e-flex e-con e-child\" data-id=\"502f435\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-20065f9 elementor-widget elementor-widget-text-editor\" data-id=\"20065f9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\"><tbody><tr><td><div><strong>Research Article| Open Access<\/strong><\/div><div class=\"item doi\"><span class=\"value\">Volume 16 | Issue 03 | Page 74-83| <a href=\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-content\/uploads\/sites\/2\/2026\/04\/PJC.v16.i03.p08.pdf\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.15228\/2026.v16.i3.p08<\/a><\/span><\/div><\/td><\/tr><\/tbody><\/table><h4><strong><b>Mg-Induced Structural Transitions and Blue-Shift in the Optical Properties of ZnO<\/b><\/strong><\/h4><p><a href=\"https:\/\/orcid.org\/0009-0007-4180-141X\"><strong>Ramsha Saleem<\/strong><\/a><br \/>Institute of Physics, University of Sindh, Jamshoro, Pakistan<\/p><p><strong>Humera Shaikh<\/strong><br \/>Institute of Physics, University of Sindh, Jamshoro, Pakistan<\/p><p><strong>Muhammad Saajan Bharhaam<sup>2<\/sup><\/strong><br \/>Mehran University Institute of Science &amp; Technology Development, Jamshoro, Pakistan<\/p><p><strong>Abdul Majid Soomro<\/strong><br \/>Institute of Physics, University of Sindh, Jamshoro, Pakistan<\/p><p><strong>Nek Muhammad Shaikh<\/strong><br \/>Institute of Physics, University of Sindh, Jamshoro, Pakistan<\/p><p><strong>Waseem Ahmed Bhutto<\/strong><br \/>Institute of Physics, University of Sindh, Jamshoro, Pakistan<\/p><p><strong>Irfan Ali Sanjrani<\/strong><br \/>Institute of Physics, University of Sindh, Jamshoro, Pakistan<\/p><p><strong>Zahid Hussain Arain<\/strong><br \/>Institute of Physics, University of Sindh, Jamshoro, Pakistan<\/p><p><strong>Muhammad Waseem Mirbhar<\/strong><br \/>Institute of Physics, University of Sindh, Jamshoro, Pakistan<\/p><p><strong>Tarique Ali Siyal<\/strong><br \/>Institute of Physics, University of Sindh, Jamshoro, Pakistan<\/p><p><strong>Naveed Abbas Nangraj<\/strong><br \/>Institute of Physics, University of Sindh, Jamshoro, Pakistan<\/p><div class=\"row\"><div class=\"main_entry\"><table border=\"0\" width=\"93%\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\"><tbody><tr><td align=\"center\" valign=\"top\"><strong>Received<\/strong><br \/>16 Mar, 2026<\/td><td align=\"center\" valign=\"top\"><strong>Accepted<\/strong><br \/>22 Apr, 2026<\/td><td align=\"center\" valign=\"top\"><strong>Published<\/strong><br \/>22 Apr, 2026<\/td><\/tr><\/tbody><\/table><div class=\"item abstract\"><p><strong>ABSTRACT:<\/strong><br \/>Mg-ZnO NPs with varying concentrations (4, 8, and 12) % were synthesized via a low-cost co-precipitation method. Morphological transition revealed by SEM: a significant change was observed in morphology due to the high temperature; NPs changed from irregular-shaped granules to spherical clusters for undoped ZnO to higher Mg concentrations. Single-phase hexagonal wurtzite structure confirmed by XRD in all samples, with peak shifts indicating the successful substitution of Zn\u00b2\u207a\u00a0by Mg\u00b2\u207a. The Debye-Scherrer formula was used to find the average crystallite size; the particle size increased from 27.24nm to 31.19nm in the undoped ZnO and 12% Mg-doped samples, respectively, reflecting improved crystallinity. PL analysis demonstrated a significant blue shift in the Near Band Edge (NBE) emission, with the optical band-gap (calculated from the emission peak) increasing from 3.35 eV to 3.48 eV. EDX results validated the elemental purity of the Zn, O, and Mg constituents. The 8% Mg-ZnO sample showed the lowest PL intensity, indicating suppressed electron-hole recombination. These structural and optical modifications, particularly the formation of spherical clusters and the tuning of band gaps, make these Mg-ZnO NPs highly efficient candidates for the photocatalytic degradation of organic dyes in wastewater treatment.<br \/><strong>Keywords<\/strong>: ZnO NPs, Mg doping, Co-precipitation, Blue shift.<\/p><p><strong>How to Cite this paper?<\/strong><\/p><\/div><div class=\"item abstract\"><div class=\"csl-entry\"><p><strong>APA- Style<\/strong><br \/>R. Saleem, H. Shaikh, M. S. Bharhaam, A. M. Soomro, N. M. Shaikh, W. A. Bhutto, I. A. Sanjrani, Z. H. Arain, M. W. Mirbhar, T. A. Siyal, N. A. Nangraj(2026). Mg-Induced Structural Transitions and Blue-Shift in the Optical Properties of ZnO, (2026) <a href=\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-content\/uploads\/sites\/2\/2026\/04\/PJC.v16.i03.p08.pdf\" target=\"_blank\" rel=\"noopener\"><em>Pakistan Journal of Chemistry<\/em>, 16(3), 74-83.<\/a> https:\/\/doi.org\/10.15228\/2026.v16.i3.p.74-83.<\/p><p><strong>ACS Style<\/strong><br \/>Saleem\u00a0R., Shaikh H., Bharhaam M. S., Soomro A. M., Shaikh N. M., Bhutto W. A., Sanjrani I. A., Arain Z. H., Mirbhar M. W., Siyal T. A., Nangraj N. A., <em>Mg-Induced Structural Transitions and Blue-Shift in the Optical Properties of ZnO,<\/em> <a href=\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-content\/uploads\/sites\/2\/2026\/04\/PJC.v16.i03.p08.pdf\" target=\"_blank\" rel=\"noopener\"><em>Pakistan Journal of Chemistry<\/em>, 16(3), 74-83.<\/a> https:\/\/doi.org\/10.15228\/2026.v16.i3.p.74-83.<\/p><p><strong>AMA Style<\/strong><\/p><p>Saleem R; Shaikh H; Bharhaam M. S; Soomro A. M; Shaikh N. M; Bhutto W. A; Sanjrani I. A; Arain Z. H; Mirbhar M. W; Siyal T. A; Nangraj N. A; <em>Mg-Induced Structural Transitions and Blue-Shift in the Optical Properties of ZnO,<\/em> <a href=\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-content\/uploads\/sites\/2\/2026\/04\/PJC.v16.i03.p08.pdf\" target=\"_blank\" rel=\"noopener\"><em>Pakistan Journal of Chemistry<\/em>, 16(3), 74-83.<\/a> https:\/\/doi.org\/10.15228\/2026.v16.i3.p.74-83.<\/p><p><strong>Chicago\/Turabian Style<\/strong><br \/>Saleem R, Shaikh H, Bharhaam MS, Soomro AM, Shaikh NM, Bhutto WA, Sanjrani IA, Arain ZH, Mirbhar MW, Siyal TA, Nangraj NA, <em>Mg-Induced Structural Transitions and Blue-Shift in the Optical Properties of ZnO,<\/em> <em>(2026)<\/em> <a href=\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-content\/uploads\/sites\/2\/2026\/04\/PJC.v16.i03.p08.pdf\" target=\"_blank\" rel=\"noopener\"><em>Pakistan Journal of Chemistry<\/em>, 16(3), 74-83.<\/a> https:\/\/doi.org\/10.15228\/2026.v16.i3.p.74-83.<\/p><p><a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\" rel=\"license\"><img decoding=\"async\" src=\"https:\/\/i.creativecommons.org\/l\/by\/4.0\/88x31.png\" alt=\"Creative Commons License\" \/><\/a><\/p><\/div><\/div><div class=\"item copyright\"><p>This work is licensed under a\u00a0<a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\" rel=\"license\">Creative Commons Attribution 4.0 International License<\/a>.<\/p><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-78a9acc e-con-full e-flex e-con e-child\" data-id=\"78a9acc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Research Article| Open AccessVolume 16 | Issue 03 | Page 74-83| https:\/\/doi.org\/10.15228\/2026.v16.i3.p08 Mg-Induced Structural Transitions and Blue-Shift in the Optical Properties of ZnO Ramsha SaleemInstitute of Physics, University of Sindh, Jamshoro, Pakistan Humera ShaikhInstitute of Physics, University of Sindh, Jamshoro, Pakistan Muhammad Saajan Bharhaam2Mehran University Institute of Science &amp; Technology Development, Jamshoro, Pakistan Abdul Majid [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[67,1],"tags":[],"class_list":["post-10019","post","type-post","status-publish","format-standard","hentry","category-issue-1-2","category-uncategorized"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Mg-Induced Structural Transitions and Blue-Shift in the Optical Properties of ZnO - Pakistan Journal of Chemistry<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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