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Journal : International Journal of Renewable Energy Development

Development of WO3/TiO2-NT/Ti photoanode for simultaneously POME degradation, electricity generation, and hydrogen production in a photocatalysis-fuel cell system Bachri, M. Febriansyah; Husein, Saddam; Susanto, Bambang Heru; Ratnawati, Ratnawati; Slamet, Slamet
International Journal of Renewable Energy Development Vol 14, No 3 (2025): May 2025
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2025.60978

Abstract

This research presents a WO₃/TiO₂-NT/Ti photoanode for processing POME waste as well as producing electricity and hydrogen simultaneously. The photoanode in the form of nanocomposites was synthesized using an in-situ anodization method and characterized using Field Emission Scanning Electron Microscopy with Energy Dispersive X-ray (FESEM-EDX), X-ray Diffraction (XRD), Photoluminescence Spectroscopy (PL-Spectra), photocurrent transient, X-ray Photoelectron Spectroscopy (XPS), and UV-Visible Diffuse Reflectance Spectroscopy (UV-Vis DRS). The results showed that the WO₃/TiO₂-NT/Ti photoanode with 0.3 g of WO₃ precursor added during anodization exhibited the best PFC performance. The system achieved a COD degradation of 84%, hydrogen production of 11.18 mmol/m², and a maximum power density of 0.0375 mW/cm² under visible light irradiation, outperforming the variations with 0.5 g and 0.78 g WO₃ precursor. The enhanced performance was attributed to the formation of a heterojunction between WO₃ and TiO₂, as confirmed by characterization results and performance tests in COD degradation, electricity generation, and hydrogen production. Meanwhile, the addition of 0.5 g and 0.78 g WO₃ precursor reduced photocatalytic performance, likely due to excessive Na₂WO₄·2H₂O during anodization, which could partially cover the active TiO₂-NT/Ti surface and alter the electrochemical oxidation process. The developed WO₃/TiO₂-NT/Ti photoanode offers a promising solution for simultaneous wastewater treatment, clean hydrogen production, and electricity generation, with potential applications in sustainable palm oil processing industries and future renewable energy technologies.
Achieving superior tartrazine-tetracycline removal and hydrogen production with WO3/g-C3N4/TiNTAs through integrated photocatalysis-electrocoagulation Husein, Saddam; Budiman, Abdul Hamid; Dewi, Eniya Listiani; Slamet, Slamet
International Journal of Renewable Energy Development Vol 14, No 4 (2025): July 2025
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2025.61167

Abstract

The study aims to evaluate the removal of tartrazine (TZ), tetracycline (TC), and a combination of both TZ+TC and hydrogen (H2) production simultaneously using WO3/g-C3N4/TiNTAs (W-CN-TiNT) nanocomposites. The processes used in this study were Electrocoagulation (EC), photocatalysis (PC), and a combination of photocatalysis-electrocoagulation (PC-EC) simultaneously. The synthesis of W-CN-TiNT nanocomposites was carried out using the in-situ Anodization (IA) method, which was then tested for its performance in the PC and PC-EC processes. The nanomaterials were characterized by various techniques such as X-ray diffraction (XRD), ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), field emission scanning electron microscopy with energy dispersive X-ray spectroscopy (FESEM-EDX), high-resolution transmission electron microscopy with selected area electron diffraction (HRTEM-SAED), X-ray photoelectron spectroscopy (XPS), and photocurrent measurements. In the PC process, liquid chromatography-high-resolution mass spectrometry (LC-HRMS), UV-Vis spectrophotometer, and gas chromatography (GC) were used to assess the efficiency of pollutant removal and H2 production. The results show that TZ is removed more easily than TC during the PC process, and the pollutant removal rate is correlated with H2 production. This observation also applies to the EC process and the PC-EC. The PC-EC process is superior to the single process of removing the TZ+TC pollutants. The proposed approach has proven to be effective for TZ+TC removal and in enhancing H2 production. The use of W-CN-TiNT nanocomposite as a photocatalyst is revolutionary. It significantly improves the process efficiency. This research provides a sustainable alternative solution that is environmentally friendly and can be applied for the treatment of pharmaceutical industrial wastewater containing complex organic compounds.
Co-Authors Abdul Hamid Budiman Affan Silalahi, Ali Aini Khairunnisa, Nur Al-Hidabi, Dawood Abdulmalek Yahya Amanda Rahayu, Nurul Ananta, I Wayan Feri Ariska, Nadia ASWAN PANGONDIAN Athaillah Athaillah, Athaillah Aulia, Tasya Luthfia Aziz, Pratiwi Bachri, M. Febriansyah Baktiar, Baktiar Bambang Heru Susanto, Bambang Heru Chandra, Putra Chatarina Umbul Wahyuni Chindy Umaya Darwis, Mardis dhani, Ramdhani Nur Saputra Diana Putri Edi Nasra Elanda, Yurike Elfrida Ratnawati emelda, emelda Eniya Listiani Dewi Fachrozi, Muhammad Nirwan Fadilla, Syabil Salza FAHARUDIN, FAHARUDIN Fatmawati, Ni Komang ayu Feronica, Sagita Fuadah, Nurul Izmi Gani, Fadly Arirja Handayani, Rut Harahap, Armansyah Maulana Harmain, La Ode Muhammad Hasrianto, Hasrianto Hendratno, Indra Heriyanto, Abdul Roni Indrayani Dalimunnthe, Gabena Iskandar, Andi Cempana Sari Jumaeda, St. Khairiyyah, Fitriani Hasna Khairunnisa, Nur Aini Lestari, Indah Budi Lestari, Yovita Endah Maryam, Euis Ma’arif, Rizal Syamsul Monaya, Nova Muhaimin, La Ode Mujibullah, Mujibullah MULYADI Nik Abdullah, Nik Md. Saiful Azizi Nofita, Nofita Nugroho, Dian Prasetyo Nur Aini Khairunnisa Nur, Ariza Wahdania Nurkhalika, Rachmi Pradani, Aulia Farah Pratiwi, Dinda Ayu PS, Nurunnisa Purnamasari, Amrina Puspitahati - Putra, Muhammad Satria Mandala Putri Amalia Putri Handayani Qolyubi, Asep Thobibuddin Rambe, Robiatun Ratnawati Ratnawati Rizky, Erika Rumatiga, Hidayat Rustamadji, Ryan Rafi Samor, Vania Amanda Sari, Tara Rahma Septiawan, Azizah Nada Setiabudhi, Indrasurya Shafirah, Farah Dyah Siti Alida, Riska Slamet Slamet . Sonhaji, Anas Suaib, Sujarwadi Subroto, Inggrid Virzinia Sudiami, Sudiami Sukri, Zulhan Syabanti, Siti Sylvia Br. Ginting, Ovalina Tutik Tutik Ulfa, Ade Maria Ulfah Ulfah Wibawa, Muhammad Bayu Widiyanti, Iin Yumarni, Ani Zakaria, Aisyah Zulfadilah, Ahmad Zulfardi, Zulfardi