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All Journal JURNAL ILMIAH PLATAX POSITRON Jurnal Kimia Khatulistiwa BERKALA SAINSTEK Innofarm : Jurnal Inovasi Pertanian Al-Kimia Jurnal Biologi Tropis Indonesian Journal of Pure and Applied Chemistry Jurnal Laut Khatulistiwa CHEESA: Chemical Engineering Research Articles Indonesian Journal of Chemical Analysis (IJCA) Jambura Journal of Chemistry Jurnal Darma Agung Equilibrium Journal of Chemical Engineering Lumbung Inovasi: Jurnal Pengabdian Kepada Masyarakat Center of Knowledge Jurnal Riset Fisika Indonesia al Kimiya : Jurnal Ilmu Kimia dan Terapan
Aritonang, Anthoni Batahan
Department Of Chemistry, Tanjungpura University
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Journal : BERKALA SAINSTEK

 1 
Co(II)-TiO2/Ti Thin Film as Antibacterial Photocatalysts Escherichia Coli Under Visible Light Ilumination Aritonang, Anthoni Batahan; Rozaqina, Nuri; Harlia, H.
BERKALA SAINSTEK Vol 11 No 3 (2023)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v11i3.38055

Abstract

A thin layer of TiO2 doped with Cobalt (II) immobilized on the surface of a titanium foil (Co(II)-TiO2/Ti) has been synthesized from a titanium foil (Ti) as a TiO2 precursor as well as a thin layer matrix and CoCl2.6H2O as a source of Co(II) on variations of 0.5%, 1% and 2%. Synthesis was carried out by anodizing method using ethylene glycol electrolyte solution with the addition of NH4F and followed by calcination treatment at 450ºC for 3 hours. The obtained Co(II)-TiO2 /Ti thin films were characterized using Fourier-transform infrared (FT-IR) spectroscopy, Diffuse Reflectance UV-Vis (DRSUV-Vis) and X-ray diffraction (XRD) methods. Doping Co(II) variations of 0.5%, 1.0% dan 2.0% in the TiO2 structure causes a shift in the vibrational absorption peak of Ti-O (460.99 cm-1) towards a smaller wave number of 459.06 cm-1 respectively ; 453.27 cm-1 and 451.34 cm-1. This is supported by the results of the DRUV-Vis analysis using the tauc plot method, which shows a decrease in the band gap energy of TiO2 (3.24 eV) to 2.57 eV, 2.47 eV and 2.28 eV. Based on XRD analysis, it is known that the Co(II)-TiO2/Ti photocatalyst has anatase phase with a crystal size of 15-17 nm. The photocatalytic activity of Co(II)-TiO2/Ti under visible light illumination was evaluated for inhibition of Escherichia coli bacterial growth. Co(II)-TiO2/Ti photocatalyst at 2.0% Co(II) concentration had the best inhibition (43.2%) compared to 0.5% and 1.0% Co(II) concentrations, respectively 18% inhibition and 27%.
Synthesis of The Cu(II)-doped TiO2/Bi2O3 as a Photocatalyst for Rhodamin B Degradation Under Visible Light Ilumination Aritonang, Anthoni Batahan; Asma, Al; Sapar, Ajuk
BERKALA SAINSTEK Vol 11 No 4 (2023)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v11i4.39799

Abstract

The Cu(II)-doped TiO2 and Cu(II)-doped TiO2 /Bi2O3 compound have been synthesized using the sol gel method with titanium tetraisopropoxide (TTIP) as the TiO2 precursor and Cu(NO3)2.3H2O as the Cu(II) dopant was carried out at various concentration of 0.075%; 0.250% and 1.000%, as well as Bi(NO3)3.5H2O as a Bi2O3 precursor. Based on characterization using the DRSUV-Vis spectrophotometric method with data analysis using a tauch plot, it is known that the band gap energy of Cu(II)-doped TiO2 is 2.89 eV; 2.72 eV; 2.54 eV. The addition of Bi2O3 to Cu(II)-doped TiO2 (1%) causes a decrease in the band gap from 2.54 to 2.18 eV which is equivalent to a wavelength of 567 nm. IR spectrophotometry spectra analysis shows a shift in Ti-O absorption towards smaller wave numbers. Characterization by the XRD method shows that 1% Cu(II)-doped TiO2 /Bi2O3 has an anatase phase with a crystallite size of 24 nm. Photocatalysis activity test on the degradation of rhodamine B solution at a concentration of 10 ppm, under visible light illumination for 180 minutes was able to degrade up to 85.85%.
Co-Authors Adhitiyawarman, Adhitiyawarman Ajuk Sapar Andi Hairil Alimuddin Arfan Sindhu Tistomo Arie Antasari Kushadiwijayanto Ashari, Asri Mulya Asma, Al Asmawati Asmawati Aufa, Raisa Rasyada Ayu Hindayani Desi Listiani Eka Mardika Handayani Eka Pratiwi Endah Sayekti Ferdian, Rasyid Fransiska M Wenisda Harlia Harlia Harlia, H. Harry Budiman Helena, Shifa Ikha Safitri Ikha Safitri Imelda Hotmarisi Silalahi Jayuska, Afghani Jihandini, Syahwa Jumlia Kartika, Novi Kukuh Hernowo Kurniawan Alam Muza’ki Limbong, Winny Sunfriska M. Agus Wibowo Margareta Caroline Harunrasjid Maulida, Alifiani Maura, Gabriella Mega S Sofiana Mega Sari Juane Sofiana Melati Azizka Fajria Millenia Millenia Muhammad Agus Wibowo Muhammad Rizky Mulyana Munadi Munadi Nazarudin Nazarudin Oman Zuas Oman Zuas Puji Ardiningsih Puji Ardiningsih Puji Ardiningsih Puji Ardiningsih Putri, Desy Harlina Putry Parwaty Resti Fartiwi Rita Kurnia Apindiati Rita Kurnia Apindiati Robi, Robi Rozaqina, Nuri Rudiyansyah Rudiyansyah SALPRIMA YUDHA S Sari, Atna Sari, Heni Puspita Sitohang, Mikael Sitopu, Selli Dosriani Suparnawati Suparnawati Suparnawati Suparnawati Suparnawati, Suparnawati Suripto D Yuwono Syarif Irwan Nurdiansyah Uci Pradina Umi K Yaumidin Warsidah Warsidah Warsidah Warsidah Warsidah Warsidah Warsidah Warsidah Warsidah, Warsidah Wenisda, Fransiska Monita Winda Rahmalia Yenny Lisbeth Siahaan Zaharah, Titin Anita