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Synthesis and Characterization of Sio₂ Thin Films Derived from Rice Husk Ash Coated with Cuo: Evaluation of Photocatalytic Activity through Methylene Blue Degradation Afra Hayyunnisa; Riri Jonuarti; Yenni Darvina; Fadhila Ulfa Jhora
Journal of Multidisciplinary Science: MIKAILALSYS Vol 4 No 3 (2026): Journal of Multidisciplinary Science: MIKAILALSYS
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/mikailalsys.v4i3.11559

Abstract

Water pollution caused by synthetic dye effluents that resist natural degradation has intensified the need for stable and environmentally sustainable photocatalytic materials. This study aimed to synthesize and characterize bilayer SiO₂/CuO thin films using silica extracted from rice husk ash (RHA) and to evaluate their photocatalytic activity for methylene blue (MB) degradation. Silica was extracted from agricultural RHA, activated with 1 M HCl, fabricated into thin films through sol–gel and spin-coating techniques, and thermally annealed at 300 °C. X-ray diffraction analysis confirmed the amorphous structure of silica, indicated by a broad diffraction hump centered at 2θ ≈ 22°, and the formation of monoclinic CuO crystalline phases in the bilayer films. Cross-sectional scanning electron microscopy showed that the pure SiO₂ film had a smooth morphology and a thickness of 3.507 µm, whereas the bilayer SiO₂/CuO film had a total thickness of 5.444 µm and exhibited a distinct porous upper layer comprising accumulated CuO grains deposited on the smooth SiO₂ base layer. Under UV-A irradiation, MB absorbance at λ = 664 nm decreased continuously, resulting in a degradation efficiency of 12.13% after 180 min. The degradation process closely followed pseudo-first-order kinetics, with a rate constant of 7.33 × 10⁻⁴ min⁻¹ and R² = 0.985. These findings demonstrate that biomass-derived silica from RHA can function as a supporting matrix for anchoring photocatalytically active CuO granular structures. This study contributes to the sustainable utilization of agricultural waste and provides a foundation for the further development of biomass-derived thin-film photocatalysts for synthetic dye degradation.
Co-Authors - Rahmi - Ramli - Ramli - Syakbaniah - Yulkifli - Yulkifli Abdul Azis Abdul Aziz Ade Aprilia Ade Usra Berli Afdatul Zikri Afra Hayyunnisa Afrizal Afrizal Ahmad Fauzi Aifah Fauziah Akmam Akmam Alfia Zammi Alif Yulanda Putri Aljuiswan, Fernanda Almunazar, Fauziyah Alqadri, Dheo Alwi Nofriandi Amali Putra Amalia Salsabila Ambran Hartono amira tiara wulandari Andari Oktafiani Anisa Meysi Wardi Annisa Febriani, Annisa Annisa, Indah Anofa Liona Anwar, Suci Aprilia Cahaya Ari Arfandi arifaldi arifaldi Asrad Hafizah Asrizal Asrizal Asrizal Atika Dwi Maharani Zuler Audia, Washilla Aulia, Mhd Reyfanza Aulia Auzha Hira Asfaha Azca Aryadiva Mahengga Azura Carolina Harsani Azzahra, Zakia Baehaqi Bella Salsa Bella Sukma Putri Bunga Amanda Idha Chairunnas Chairunnas Cici Ramayanti Dara Putri Pratama Dea Stivani Suherman Denisa Rizka Maulia Desnita Desra Yarsina Dicko Maulana Syahdan Diffa Azilia Dila Alhumaira Dola Afriyenti Edi Sanjaya Elsa Imelda Elsa Okta Memori Elsa Rahmayuni Emiliannur Emiliannur everly aberta Fadhila Ulfa Jhora Fadilla Septiani Fadillah Ulfah Fakhrur Rhozy Fandi Oktasendra Fani, Meylin Sir Fanny Rahmatina Rahim Fatni Mufit Fatni Mutfit Fauziyah, Faadhilah Febrian Syah Febrian, Nanda Festiyed Fio Adella Illahi Firda Annisa Fitrah Ayu Fitratul Ilahiyah Fitri Endriyani fitri rahmi Fitria Murti Fran Surya Andi Fredy Pratama Frima Suci Agustia Fuja Novitra Gina Fadilah NST Gusnedi Gusnedi Gusnedi Gusnedi Gusnedi, - Gustika Yonanda Hamdi Hamdi Hamdi Rifai Hardina, Yuli Harman Amir Hasya Syahmi Hazrati Ashel Hersha Hanifa Hidayati Hidayati Hidayati Hidayati Hidayati Hidayati Hifzi, Zudiya Hilmi Rizki Anjani Hrp, Abdul Maulub Hufri Hufri Ihsania Ikrima Kinanti Ilahi, Fitratul Indah Safira Indah Septia Ningsih Indah Tri Handini Indri Syukra Innes Andriani Iryani Iryani Ismathul Dinny Jasmine, Alifa Jhora, Fadhila Jhora, Fadhilla Ulfa Kasih Syirpia Khairunnisa Khairunnisa Kuwat Triyana Larasati br Ginting, Putri Zulvia Leni Aziyus Fitri Lestra, Dila Ayu Letmi Dwiridal Lidya Agraini Lucya Sinurat Lusi Oktavia Masril Masril Masril Masril Masril Masril masril masril Masril Masril Maulia, Denisa Rizka Melani Alvino Miftahurrahmah Miftahurrahmah, Miftahurrahmah Muhammad Ikmal Muhammad Rivai Murtiani Murtiani Murtiani Murtiani Mustika, Dian Putri mutia faizah apriani Mutia Risma Mutia Yussavel Navis Nabila, Aliya Nadia Ardianti Nadia Ramadhanty Nadila Putri Bungsu Nadya Aztifa Nadya Yunestika Nawiyah, Nawiyah Nazifah, Naurah Nia Nursurila Nidya Yulfriska Nidya Yulfriska Novelia Prima Nur Anisa Nur Sahfitri Nurhasanah Nurhasanah Nurhijjah Tiur S Nurmala Sari Lubis Oktavia, Vini Onny Gustira Pakhrur Razi Pertama, Indri Saputri Pratama, Rayvol Dion Pratiwi Mailisa Prima Nora Ananda Puput Mulya Sari Pusri Mela Putra Adil Putra, Amali Putri Diana Putri Dwi Sundari Putri Rasti Ramadhani Radha Firaina Rahma Tilla Dwi Lestari Rahma Yeni Rahmadini, Fadhilla Rahmat Hidayat Rahmat Hidayat Rahmi Zulva Ramadhani, Dinda Ramli Ramli Ramli Ramli Ramli Ramli Ramli Ramli Ramli Ramli Ramli Ramli Ramli Ramli, - Rara Nur Rida M.Y Ratnawulan . Renol Afrizon Resti Novela Retna Junia Revi Febrina Sari Ria Monica Rifi Wasrika Rima Melani Putri Rio Anshari Rio Anshari Riolin Putri Artiwi Riri Jonuarti Riri Jonuarti Riri Raihannil Jannah Riyasni, Selma rizka fauziah Rizki Rizki Rofifah Widara Romizah Marta Salma Amalia As Shidiq Santika, Viera Alvio Sari, Mona Berlian Septia, Zahwa Setivawani, Andrisa Shilvhanie Usman Shinta Kumala Silmi Hidayatullah03 Silvi Trisna Silvi Yulia Sari Siti Rahma Fitri Yani Siti Riva Darwata Slivi Yulia Sari Sonia Nur Riza Sovia Yulianti Srisa Oktaweri Suci Wahyuni Suherman, Dea Stivani Suryani Fadhilah Syafri, Syafri Syafriani - - Syafriani Syafriani Syafriani Syafriani Syafriani Syafriani Syafrinaldi Syafrinaldi Syahputra , Ilham Syair Nandi Tiwi Novalia Syahari Tri Agunaisy Tria Sukma Sandi Trio Junira Fernando Ulfa Jhora, Fadhilla Ully Nuraidina Ummiatul Fitri Vanessa Febta Sindani Varadila Sahanaya wahyu dilla abdullah Wahyudil Hayat wahyuni hafnisyah Wahyuni Satria Dewi Windri Suci Gaitari Yeni Mustika Sari Yogi Putra Yohandri Yohandri Bow Yolvi Oktaviani Yona Sri Mantia Yosi Febriani Yudha, Fauzan Syafril Yulhendri Yulhendri Yulia Febrina Yulia Sari, Silvi Yulkifi Yulkifi Yulkifli Yulkifli Yulkifli Yulkifli Yulkifli Yulkifli, Y Yunita Ela Saputri Yuri Yanti Yurnetti Yurnetti Yurnetti Yurnetti Yurnetti, Yurnetti Zakiya, Zara Zara Zakiya Zira Artika Zoni, Muhammad Ari Zulhendri Kamus Zulma, Degito