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All Journal VALENSI Chimica et Natura Acta
Fransisca, Natasha
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Environmental Science Materials Science & Nanotechnology

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Green Synthesis of Zinc Oxide Particles using Banana Peels and Tea Leaves Extracts for Rhodamine B Photodegradation Pratomo, Uji; Fransisca, Natasha; Afriani, Zahra; Sinambela, Ayu Jelita; Zahra, Nazwa Alya; Suwarno, Nelson Indarto; Sumeru, Husain Akbar; Kurnia, Irwan; Primadona, Indah; Edwin, Rudiawan
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 10, No. 2, November 2024
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v10i2.41793

Abstract

Rhodamine B is a widely used dye in the textile sector. However, the wastewater produced during the dyeing process presents a notable source of pollution, contaminating water and posing a threat to aquatic ecosystems due to its presence in liquid waste. Photocatalysis is a technique for breaking down toxic textile dye waste a semiconductor as a catalyst, valued for its high sensitivity and eco-friendly nature. In this research, zinc oxide particles were synthesized via a green synthesis approach using precipitation, employing natural capping agents from banana peel and tea leaf to degrade the synthetic dye of rhodamine B. The catalyst material was characterized using X-ray diffraction (XRD), scanning electron microscope (SEM), and ultraviolet-visible diffuse reflectance (UV-DRS). The photodegradation performance of rhodamine B was determined under UV light exposure for 3 hours. The XRD spectra of ZnO show the specific peaks of 2θ at 31.8°, 34.5°, and 36.3° with a crystallinity value of around 79.50%. The SEM result shows that the morphology of ZnO is in cotton-like form with a minimum band gap of 3.17 eV. The cotton-like ZnO particles demonstrated superior photodegradation efficiency for Rhodamine B, achieving 61.8%, compared to 47.9% with pure ZnO. It suggests that synthesizing ZnO particles with banana peels and tea leaf extracts boosts photodegradation efficiency by up to 20% compared to pure ZnO. This research highlights the potential of utilizing eco-friendly and sustainable methods as a greener approach for reducing waste in environmental applications.
Green Synthesis of Zinc Oxide Particles using Banana Peels and Tea Leaves Extracts for Rhodamine B Photodegradation Pratomo, Uji; Fransisca, Natasha; Afriani, Zahra; Sinambela, Ayu Jelita; Zahra, Nazwa Alya; Suwarno, Nelson Indarto; Sumeru, Husain Akbar; Kurnia, Irwan; Primadona, Indah; Edwin, Rudiawan
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 10, No. 2, November 2024
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v10i2.41793

Abstract

Rhodamine B is a widely used dye in the textile sector. However, the wastewater produced during the dyeing process presents a notable source of pollution, contaminating water and posing a threat to aquatic ecosystems due to its presence in liquid waste. Photocatalysis is a technique for breaking down toxic textile dye waste a semiconductor as a catalyst, valued for its high sensitivity and eco-friendly nature. In this research, zinc oxide particles were synthesized via a green synthesis approach using precipitation, employing natural capping agents from banana peel and tea leaf to degrade the synthetic dye of rhodamine B. The catalyst material was characterized using X-ray diffraction (XRD), scanning electron microscope (SEM), and ultraviolet-visible diffuse reflectance (UV-DRS). The photodegradation performance of rhodamine B was determined under UV light exposure for 3 hours. The XRD spectra of ZnO show the specific peaks of 2θ at 31.8°, 34.5°, and 36.3° with a crystallinity value of around 79.50%. The SEM result shows that the morphology of ZnO is in cotton-like form with a minimum band gap of 3.17 eV. The cotton-like ZnO particles demonstrated superior photodegradation efficiency for Rhodamine B, achieving 61.8%, compared to 47.9% with pure ZnO. It suggests that synthesizing ZnO particles with banana peels and tea leaf extracts boosts photodegradation efficiency by up to 20% compared to pure ZnO. This research highlights the potential of utilizing eco-friendly and sustainable methods as a greener approach for reducing waste in environmental applications.
Direct Electrochemical Detection of Carbaryl in Water using Boron-Doped Diamond Electrodes Fransisca, Natasha; Putra, Chico Permana; Zakiyyah, Salma Nur; Zein, Muhammad Ihda Hamlu Liwaissunati; Hartati, Yeni Wahyuni; Irkham, Irkham
Chimica et Natura Acta Vol 14, No 2 (2026)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cna.v14.n2.72780

Abstract

Carbaryl (1-naphthyl methylcarbamate) is a carbamate pesticide used to cause adverse environmental and health effects when misused through water contamination. Therefore, this research aimed to develop a direct electrochemical detection method for carbaryl in aqueous media using boron-doped diamond (BDD) electrodes. In this context, BDD electrodes exhibited superior electrochemical performance compared to conventional materials such as gold (Au), platinum (Pt), and glassy carbon electrodes (GCE) due to a wide potential window, low background current, and excellent chemical stability. Cyclic and differential pulse voltammetry reported a well-defined oxidation peak for carbaryl at 1.30 V, with significantly enhanced sensitivity. The results showed that there was a linear response in the concentration range of 10–100 μM, with a detection limit of 5.30 μM, quantification limit off 100.69 μM, excellent reproducibility (RSD = 2.35%) and recovery (100.97%). Furthermore, SEM and Raman analyses confirmed the polycrystalline structure and high boron doping level of BDD surface. The method was validated using tap water samples, confirming the applicability for real-world environmental monitoring. These results suggested the potential of BDD electrodes for sensitive, rapid, and direct detection of carbaryl in water without the need for complex sample preparation.
Co-Authors Afriani, Zahra Edwin, Rudiawan Irkham, Irkham Kurnia, Irwan Pratomo, Uji Primadona, Indah Putra, Chico Permana Sinambela, Ayu Jelita Sumeru, Husain Akbar Suwarno, Nelson Indarto Yeni Wahyuni Hartati Zahra, Nazwa Alya Zakiyyah, Salma Nur Zein, Muhammad Ihda Hamlu Liwaissunati