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All Journal VALENSI JURNAL KIMIA SAINS DAN APLIKASI Jurnal Ilmu Dasar Jurnal Natur Indonesia Sainstek TELKOMNIKA (Telecommunication Computing Electronics and Control) CHEMICA Jurnal Teknik Kimia Jurnal Matematika & Sains Eksergi: Chemical Engineering Journal Jurnal Riset Kimia ROTOR: JURNAL ILMIAH TEKNIK MESIN Jurnal Kimia dan Kemasan PROSIDING SEMINAR KIMIA Chimica et Natura Acta INDONESIAN JOURNAL OF APPLIED PHYSICS ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry JURNAL PHOTON Eksakta : Berkala Ilmiah Bidang MIPA Indonesian Journal of Electrical Engineering and Computer Science Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Hydrogen: Jurnal Kependidikan Kimia Jurnal Kimia dan Kemasan AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Makara Journal of Science SAINTI: Majalah Ilmiah Teknologi Industri Jurnal Kimia Unand
Syukri Arief
Andalas University
Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Social Sciences Other

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Journal : JURNAL KIMIA SAINS DAN APLIKASI

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Green synthesis of Ag/TiO2 Nanocomposite Assisted by Gambier Leaf (Uncaria gambir Roxb) Extract Sry Wahyuni; Syukri Syukri; Syukri Arief
Jurnal Kimia Sains dan Aplikasi Vol 22, No 6 (2019): Volume 22 Issue 6 Year 2019
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2716.241 KB) | DOI: 10.14710/jksa.22.6.250-255

Abstract

Studies of green synthesis of nanoparticles mediated by plants extract is extensively explored and studied in recent time due to eco-friendliness, cost-effectiveness, and use a minimum amount of toxic chemicals in the process of inorganic material synthesis. In this study, the immobilization of silver nanoparticles on the surface of titanium dioxide (TiO2) was carried out using Uncaria gambier Roxb. leaf extract as a silver ion (Ag+) reducing agent. The synthesized Ag/TiO2 nanocomposite was characterized by UV-Vis spectroscopy, X-ray diffraction (XRD), and Diffuse Reflectance Spectroscopy (DRS). The formation of silver nanoparticles was confirmed through UV-Vis spectroscopic analysis, which showed a silver surface plasmon resonance (SPR) band at 426 nm. The X-ray diffraction pattern shows that Ag can inhibit the transition of the anatase into rutile phase. The presence of Ag particles in TiO2 can increase the absorption ability from an initial wavelength of 407 nm to 438 nm. Based on the results of Rhodamin B degradation, it can be seen that Ag/TiO2 has a higher photocatalytic activity than bare TiO2 with 99% percent degradation at 120 minutes of irradiation time.
Effect of the Amount of Carbon in the Fe3O4@ZnO-C Nanocomposites on Its Structure and Magnetic Properties Astuti Astuti; Syukri Arief; Devi Pebrina
Jurnal Kimia Sains dan Aplikasi Vol 25, No 10 (2022): Volume 25 Issue 10 Year 2022
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.25.10.362-367

Abstract

Synthesis and characterization of structure magnetic properties of Fe3O4@ZnO- C nanocomposite have been done through the precipitation method. This study aimed to discover the effect of concentrations/thickness of carbon layer on crystal structure and magnetic properties of Fe3O4@ZnO-C nanocomposites. Fe3O4 and Fe3O4@ZnO were the samples used in the study, and variations in the amount of carbon were 0.2, 0.1, and 0.05 g. Nanocomposites were characterized using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and vibrating sample magnetometer (VSM). Based on the results of XRD, it has been found that the crystal structure for Fe3O4 was cubic, while ZnO was hexagonal wurtzite. The addition of carbons to Fe3O4@ZnO caused a broadening of the diffraction peaks and a decrease in the degree of crystallinity. The bonds formed on Fe3O4@ZnO-C nanocomposites, i.e. Fe-O bonds indicated the formation of Fe3O4, Zn-O bonds showed the formation of ZnO and C-O, C-H, and O-H bonds revealed the presence of a carbon layer originated from glucose. The VSM results showed that the magnetic saturation decreased with increasing carbon mass. Overall, the carbon-coated nanocomposite material with a carbon mass variation of 0.2, 0.1, and 0.05 g showed superparamagnetic properties with a magnetic saturation of 18.23 emu/g, 19.33 emu/g and 22.05 emu/g, while for the coercive field of 92.29 Oe, 92.90 Oe and 89.60 Oe, respectively. Based on these characterization results, Fe3O4@ZnO-C nanocomposite materials can potentially be developed as biomedical materials, such as the materials for photothermal therapy for cancer cells.
Co-Authors -, Emdeniz -, Rianda -, Yulfitrin . Darwison Abdi Dharma Abral, Hairul Ade saputra Ade Saputra Adlis Santoni Admi Admin Alief Admin Alif Admin Alif Admin Alif Admin Alif Admin Alif Agtata, Shazvelia Dwi Ahmad Hafizullah Ritonga Aju Deska Alif, Admin Alif, Admin Alif, Admin Amelia Amir Anggreini, Sri Anggresani, Lia Anwar Kasim Ariadi Hazmi Aritonang, Barita Astuti Astuti Aulia Arivin Billah Aulia Aulia Baharuddin Shaleh Boy Isfa Boy isfa Budi Hermawan BUSTANUL ARIFIN Denny Akbar Tanjung Denny Akbar Tanjung Desfitri, Erda Rahmilaila Deswati Deswati Devi Pebrina Eka Putra Waldi Ellyta Sari Emdeniz - Emriadi - Evi Adhelina Fatiha, Widya Yuliani Fitri, Ernarisa Hamdi, Hayatul Hary Sanjaya Hayatul Hamdi Herlin Oktavani Hermansyah Aziz Hermawan, Budi ihda khaira Kazuhiro Manseki Khoirul Amru Kusuma, Theresia Sita Lestari Ningsih Lia Anggresani Lisa Utami Lisa Utami Lusi Puspitasari M. H. Ahmad Mahardika, Melbi Mai Efdi Mai Efdi Maria Erna Maria Erna Maria Erna Kustyawati Matlal Fajri Alif Melbi Mahardika Mirzah Mirzah Mochamad Asrofi Mohd Hafizi Ahmad Mohd Jain Noordin Muhammad Rizki Mulyati Sukma Naldi, Nofri Nancy Willian Nengsih, Zarnida Widia Neswati Neswati Novesar Jamarun Novesar Jamarun Novizar Nazir Oktavani, Herlin Olly Norita Tetra Putri Perdana Roza Radiatun Mardiah Rahadian Zainul Rahayu Rahayu Rahmayeni Ramadhani, Umi Reni Desmiarti Restina Bemis Restina Bemis, Restina Rianda - Rianda Rizal Rini Ramadhani Risma Sari Rosadi, Maulana Yusup Roza, Putri Perdana Rudy Fernandez Safni Safni Selfa Dewati Samah Sestry Misfadhila Shaleh, Baharuddin Sry Wahyuni Suarnikan Hulu Suci Auliya Rahmi Elsya Sumaryati Syukur Suryati Suryati Syukri Syukri - Syukri Syukri Takashi Sugiura Theresia Sita Kusuma Upita Septiani Upita Septiani Usna, Sri Rahayu Alfitri Widya Yuliani Fatiha Yeni Stiadi Yessi Rahmayani Yestria Rilda Yetria Rilda Yetti Marlida Yulfitrin - Yulidar Laila Safitri Yulizar Yusuf Yurniwati Zilfa Zilfa Zulhadjri Zulhadjri