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Zilfa Zilfa
Andalas University
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Medicine & Pharmacology Social Sciences Other

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Journal : JURNAL KIMIA SAINS DAN APLIKASI

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Utilization of Shrimp Shell Waste as Nitrogen Source in N-Doped TiO₂ for Degradation of Polyethylene Microplastics Nurhasni, Nurhasni; Izzah, Annisaul; Dwitami, Aisyah Rahma; Gumilang, Yuza Ahmad; Zilfa, Zilfa; Wellia, Diana Vanda
Jurnal Kimia Sains dan Aplikasi Vol 28, No 3 (2025): Volume 28 Issue 3 Year 2025
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.28.3.115-121

Abstract

Microplastic pollution presents a significant challenge globally, posing serious threats to aquatic ecosystems. This study explores the photocatalytic degradation of microplastics in aqueous solutions by applying nitrogen-doped TiO2 (N-TiO2) nanoparticles under visible light. The N-TiO2 nanoparticles were synthesized via the solvothermal method, utilizing chitosan derived from shrimp shell waste as a nitrogen source. The photocatalytic efficacy of the N-TiO2 nanoparticles was assessed for degrading model polyethylene microplastics, illuminated by a 50-watt LED lamp. Characteristic peak shifts in the FTIR absorption spectrum, notably at 3429 cm-1 to lower wavenumbers, and diminished amide I absorption at 1621 cm-1, confirmed the successful extraction of chitosan from shrimp shell waste. The synthesized N-TiO2 nanoparticles were in the pure anatase phase, exhibited a reduced bandgap of 2.97 eV, and showed enhanced absorption in the visible light spectrum (λ=400 – 800 nm) compared to undoped TiO2. The incorporation of nitrogen into the TiO2 matrix was validated by vibration bands at approximately 1035 cm-1 and 535 cm-1, corresponding to the Ti—N and Ti—O—Ti bonds, respectively. Optimal results were attained with TiO2 nanoparticles doped with 50% nitrogen, achieving a degradation rate of approximately 30.45% of a 250 mg/L microplastic solution over 50 hours of visible light exposure—nearly six times more effective than undoped TiO2. This study highlights the sustainable use of shrimp shell waste as a nitrogen source for enhancing TiO2 nanoparticles, showcasing their potential for environmental remediation applications.
Co-Authors - Hariyanti - Zulfarman Adlis Santoni Admi Admi Afrizal Afrizal Aju Deska Aldini, Tasya Alsa Sepia Putri Amanda, Selya Anggreini Putri, Mitha Aufa Zakiyuda BUSTANUL ARIFIN Bustanul Arifin Deliza , Deliza Deliza, Deliza Desra Welly Deswati Deswati Dwi Syukur Phameswari Dwitami, Aisyah Rahma Elida Mardiah Emil Salim Emriadi - Febi Rahmi Fiska Julian Tasari Fivi Mona Bareno Gumilang, Yuza Ahmad Hamzar Suyani Hariyanti, - Hermansyah Aziz Hermansyah Aziz Hevira, Linda Heysha, Fheiza Ilahi, Fitratul Imelda Imelda Imran Nazar Izzah, Annisaul Mai Efdi Mai Efdi Matlal Fajri Alif Megita Febiola Mia Yeliandri Mirawati Mirawati Mirawati Mirawati Muhammad Hafiz Reza Neneng Swesty Norman Ferdinal Novesar Jamarun Novesar Jamarun Novesar Jamarun Nurhasni Nurhasni Nurul Afifah Nurul Annisyah Olly Norita Tetra Putri Julanda Ardica Putri Ramadhani Putri Ramadhani, Putri Putri, Anggi Nabila Rahmayeni Rahmayeni Rahmi, Febi Rahmiana Zein Raihan Hanif Aulia Refilda Refilda Refinel - Ria Elvi Susanti Risa Oktaviani Safni Safni Safni Salim, Emil Salsa Nurul Fadhilah Siti Zahara Sumaryati Syukur Suryati Suryati Suryati Swesty, Neneng Syafrizayanti Syafrizayanti Syahril Syahril Syiffa Fauzia Syukri Syukri - Syukri Arief Syukri Arief Syukri Syukri Tasari, Fiska Julian Teti Nurhayatul Rahmi Tommi Hermansyah Upita Septiani Upita Septiani Vivi Sisca Vivi Sisca Wellia, Diana Vanda Wilda Putri Suhada Yefrida - Yefrida Yefrida Yetria Rilda Yulizar Yusuf Yulizar Yusuf Zulfarman, - Zulkarnain Chaidir