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Journal : Communications in Science and Technology

Green synthesis of copper oxide (CuO) nanoparticles using Anredera cordifolia leaf extract and their antioxidant activity Munandar, Nurharis; Kasim, Syaharuddin; Arfah, Rugaiyah; Basir, Djabal Nur; Hala, Yusafir; Zakir, Muhammad; Natsir, Hasnah
Communications in Science and Technology Vol 7 No 2 (2022)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.7.2.2022.1004

Abstract

Our present study describes the green synthesis of copper oxide nanoparticles (CuONPs) using a leaf extract from Anredera cordifolia (AC). The presence of flavonoids, saponins, and alkaloids in the plant extract was confirmed by phytochemical analysis, and these chemicals can be used as reducing, stabilizing, and capping agents. UV-Vis Spectrophotometry, XRD, FT-IR, and SEM-EDS were used to characterize the CuONPs. The UV-Vis spectroscopy of the biosynthesized CuONPs revealed an absorption peak at 325 nm. The XRD graph also revealed that the Debye-Scherrer formula observed an average crystalline size of around 43.47 nm. EDS analysis confirmed the composition and purity of CuONPs. The presence of functional groups -OH, C=O, and C-O triggers the synthesis of CuONPs, according to FT-IR analysis. Furthermore, the CuONPs antioxidant property inhibited free radicals as antioxidants with an IC50 value of 34.20 g/mL.
Characterization and electrochemical properties analysis of reduced graphene oxide from corncob carbon as an electrode candidate: Synthesized using modified Hummers method Eka Anggriani Odja; Raya, Indah; Maming; Muhammad Zakir; Abd. Karim; Djabal Nur Basir
Communications in Science and Technology Vol 9 No 1 (2024)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.9.1.2024.1365

Abstract

This research aims to synthesize and characterize reduced graphene oxide (RGO), as well as analyse its electrochemical properties. The synthesis of RGO material from corn cobs went through several stage: carbonization, oxidation and reduction. The synthesis of RGO used a modified Hummer method, and was reduced using the reducing agent ascorbic acid. The synthesized RGO was then characterized using Fourier Transform Independent Spectroscopy (FTIR), X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM), and Energy Dispersive Spectroscopy (EDS). Electrochemical analysis using the cyclic voltammetry method, the specific capacitance value obtained showed that RGO had a higher capacitance value than GO. The research results showed that carbon from corn cobs, which has not been utilized optimally, can be synthesized as a basic material for making RGO as a quite promising material.
Co-Authors Abd. Karim Abdul Karim Abdul Muiz Amir, Abdul Muiz Abdul Rahim Muhammad Abdul Wahid Wahab Abdur Rahman Arif, Abdur Rahman Abshor Marantika Ade Irma Suryani Affan, Fajar Amalia, Nala AMELIA, NUR Anisa Anisa Anna Islamiyati Arfah, Rugaiyah Arfah, Rugaiyah A Arfah, Rugaiyah Andi Arman Arman Armus, Rakhmad Asih Handayani, Sri Baso Pallawagau Bustanur, Bustanur Candra, Filtra Delia, Dwi Anisa Despira, Despira Dianti, Ratna Diany Mairiza Djabal Nur Basir Djabal Nur Basir Eka Anggriani Odja Erlinda Yurisinthae Faiq Ainurrofiq Fatira Wahidah, Fatira Fauziah, St Firman, Nur Faiizah Aqiilah Fitriyana, Rinda Fuad Fathurahman, Achmad Gani Rachim, St. Annisa Gappa, Maming Gusrini, Wike Hasnah Natsir Hidayat Hidayat Indah Raya Irmawanti, Irmawanti Kamalin, Muhammad Kolo, La La Kalamu, La Yusran Lismawati, Lismawati Lubis, Haniah Mahandika, Diani Maini, Nur Maming Maming Maming Mardianti, Riska Mardiyah, Suci Maswati Baharuddin Mifta Hasda Mohd. Winario Muhammad Nadir Muhammad Syaipudin Munandar, Nurharis Novriavani, Novriavani Nunuk Hariani Soekamto Nur, Rahman NURAENI, ANDI Nurmaini Nurmaini Nursiah La Nafie Paulina Taba Permatasari Hasra, Adji Permatasari, Nur Umriani Prastawa Budi Putra, Muhammad Nanda Dwi Putri, Berliana R, Irwan Rahmawati, Rahmawati Ratna Ratna Rella, Sindiy Amay Ridhwan Rifqil Khairi Rima Meilita Sari Rinaldi Rinaldi Rinda Fithriyana Romus, Mahendra Rusnaenah, Andi Saefullah Sari, Efti Novita Sari, Ummi Saru Reza Seniwati Dali Sirajang, Nasrah Siswantari Pratiwi Sitti Rahmah St Fauziah, St Fauziah St. Fauziah Sumarni, Sitti Syaharuddin Kasim Syamsiar, Syamsiar Syamsuriyanti Syarifah Aeni Rahman Ta'bi, Widi Aprilia Tamrin Tamrin Urfan, Faiz Usrah, Muhammad Jayzul Wahyu Febri Ramadhan Sudirman Wahyuti, Wahyuti Yuniantoro, Yuniantoro Yusafir Hala Zubaidah Assyifa