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Journal : Bulletin of Chemical Reaction Engineering

Photocatalytic Activity of ZnO/Hydroxyapatite Nanocomposite for Remazol Red RB Removal in Aqueous Solution Under UV and Visible Light Irradiation Sastrawidana, I Dewa Ketut; Saraswati, Luh Putu Ananda; Sukarta, I Nyoman; Wiratini, Ni Made; Sudiana, I Ketut; Suja, I Wayan
Bulletin of Chemical Reaction Engineering & Catalysis 2026: Just Accepted Manuscript and Article In Press 2026
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20548

Abstract

Textile industry wastewater contains synthetic dyes that are resistant to natural degradation, toxic, and capable of polluting aquatic environments. One commonly used dye is Remazol Red RB (RRRB), which is stable and difficult to remove through conventional treatment methods. Therefore, an effective approach is needed to break down this pollutant. This study aimed to develop and characterize a zinc oxide/hydroxyapatite (ZnO/HA) nanocomposite as a photocatalyst for degrading RRRB dye and to evaluate its photocatalytic performance under UV and visible light irradiation. The ZnO/HA nanocomposite was prepared by mixing ZnO and HA at a 1:1 ratio, followed by the addition of a small amount of water. The mixture was milled for 24 hours to obtain nanoscale particles. The resulting material was calcined at 700 °C and characterized using FTIR, XRD, and SEM-EDX to determine its physicochemical properties. Photocatalytic activity tests of the ZnO/HA nanocomposite toward RRRB dye solution were conducted in a batch system under 50-watt UV and visible light irradiation. The operational variables examined included catalyst dosage, initial pH, and dye concentration. FTIR analysis showed characteristic absorption bands of ZnO and HA, indicating successful formation of the nanocomposite. XRD results revealed a crystal size of 19.67 nm, while SEM-EDX confirmed the presence of Zn, Ca, P, and O elements, consistent with the nanocomposite composition. The degradation efficiency of 300 mL of 50 mg/L of RRRB solution at pH of 5 with 2.0 g of ZnO/HA nanocomposite under 50 watts of UV and visible light in succession was 90.43% and 80.93% for 120 minutes of irradiation.  Copyright © 2026 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Co-Authors A. A. Istri Agung Rai Sudiatmika Adiwijaya, Pande Agus Afrianti, Desi Agus Wijaksono Ahzan, Sukainil Anak Agung Istri Brahmani Prita Dewi Anak Agung Sri Yoni Antari, Wahyu Aryani, Luh Nitra Asri Fauzi Ayu Sadnyini, Ida B. Arnyana, I. Bagus Putu Arnyana, Ida Christian Tonyjanto CHRISTIANI ENDAH POERWATI . Cordia, Grassiana Misseri Defa, Defa Desak Putu Reza Maylita Dewa Gede Agung Gana Kumara Dewi, Komang Melina Dharma Tari, I Dewa Ayu Eka Purba Diantari, Putu Eka Sukma Dr. I Nyoman Tika,M.Si . Dr. Ida Bagus Nyoman Sudria,M.Sc . Eka Junaidi Fatimah Millenia Fauziah Fazalani, Runi Fitri Aulia Frieda Nurlita Gede Jody Wikranta Kunde Gregorius Sebo Bito Handayani, Baiq Vina Harefa, Darmawan Hawali, Rebeka Filda I Dewa Ketut Sastrawidana I Gde Raju Sathya Murti I Gusti Ayu Karla Komala Dewi I Gusti Ngurah Bayu Sucitra I Gusti Ngurah Bayu Sucitra, I Gusti Ngurah Bayu I Kadek Ardyawan Putra I Ketut Iwan Swadesi I Ketut Lasia I Komang Wisnu Budi Wijaya I Made Sutajaya I Made Sutawijaya I Made Wirta I Nyoman Adi Susrawan I Nyoman Retug I Putu Eka Indrawan I PUTU PASEK SURYAWAN I Putu Yoga Laksana I Wayan Ade Yantika I Wayan Karyasa I Wayan Kertih I Wayan Lasmawan I Wayan Muderawan I Wayan Mudianta I Wayan Redhana I Wayan Widyastama I Wayan Wirjanata I. K. Sudiana Ida Bagus Made Astawa Ida Bagus Putu Arnyana Ida Ermiana Irma Mulyani Julhidayat Muhsam Kadek Ayu Astiti Kadek Ayu Astiti Kadek Idha Suarmayanti Ketut Suma Komala Dewi, I Gusti Ayu Karla Komang Melina Dewi Komang Wiratama, Gst. Ngurah Kunde, Gede Jody Wikranta Lalu Hamdian Affandi laxmi zahara Lestari, Ayu Putu Intan Yulia LUH MADE DWI WEDAYANTHI Luh Nitra Aryani Luh Putu Ratna Sundari Made Astawa, Ida Bagus Made Budiawan Made Kurnia Widiastuti Giri Made Sutajaya Mahsup, Mahsup Marthen Reda Boro Mijahamuddin Alwi Mujiburrahman Mulyani, Irma Nasar, Ismail Nasar, Ismail Nengah Kadek Selamet Ni Komang Astri Mahyuni Ni Komang Cindy Pratiwi Himawanti Ni Luh Yuni Ari Pratiwi Ni Made Ari Saputri Ni Made Ary Suparwati Ni Made Ayu Suryaningsih Ni Made Meliyawati Ni Made Putri Dwi Apriliani Ni Made Wersi Murtini Ni Made Wiratini Ni Putu Dian Utami Dewi Ni Putu Dwi Sucita Dartini Ni Putu Ellys Sucitha Dewi Ni Putu Feni Sukmawati Ni Putu Winni Widiastuti Ni Putu Wulan Pratami Dewi Ni Wayan Sri Prabawati Kusuma Dewi Ni Wayan Sumartini Ntelok, I. F. Numertayasa, I Wayan Nurlita, Frieda Nyoman Ayu Putri Lestari Nyoman Retug Pangga, Dwi Pascalian Hadi Pradana Poerwati, Christiani Endah Pratiwi, Ni Luh Yuni Ari Putu Eka Sukma Diantari Putu Krisna Dewi Reda Boro, Marthen Rosmayuni, Anak Agung Ayu Putri Rosmita, I Gusti Ayu Agung Mas S. Haryani S.Pd. I Kd. Happy Kardiawan . S.Pd. M Kes I Ketut Sudiana . Saraswati, Luh Putu Ananda Saraswati, Regina Sepnita Lestari Yanti, Ni Putu Sinta Javani Sofia Idawati Lubis Suardana, I. N. Suardiati Putri, Ni Sugiantara, I Putu EKa Sukroyanti, Baiq Azmi Supriani, Ni Made Sutaja, I Made Sutajaya, Made Suwadarma, K W Syamsiar, Syamsiar Tjokorda Gde Putra Wirama Wadi, Hairil Wahjoedi Wayan Eka Swarjawa, I Wisnu, I Komang Wisnu Budi Wijaya Wulan Pratami Dewi, Ni Putu Yoni, Anak Agung Sri