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All Journal International Journal of Advances in Applied Sciences Reaktor BERKALA FISIKA SAINS DAN MATEMATIKA YOUNGSTER PHYSICS JOURNAL Edumatsains The Indonesian Biomedical Journal Journal of Physics and Its Applications Indonesian Journal of Electrical Engineering and Computer Science
Eko Hidayanto
Departemen Fisika, Fakultas Sains Dan Matematika Universitas Diponegoro Jl. Prof. Soedarto, SH, Tembalang, Semarang Telp./Fax. (024)74680822/(024) 74680822
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Education Energy Environmental Science Materials Science & Nanotechnology Mathematics Physics Public Health

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Journal : Reaktor

 1 
Synthesized of Double Layer Thin Film ZnO/ZnO:Ag by Sol-Gel Method for Direct Blue 71 Photodegradation Heri Sutanto; Singgih Wibowo; Eko Hidayanto; Iis Nurhasanah; Hady Hadiyanto
Reaktor Volume 15 No.3 April 2015
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (624.468 KB) | DOI: 10.14710/reaktor.15.3.175-181

Abstract

The objective of this paper is to synthesize and to characterize a single and a double layer ZnO and ZnO/ZnO:Ag thin films and their application for degradation of direct blue 71. Double layer (DL) thin films of zinc oxide and silver-doped zinc oxide (ZnO/ZnO:Ag) were deposited on the substrate glass by using sol-gel spray coating technique. Ag doping variations (2, 4, 6 and 8 %mol) into ZnO were studied. X-Ray Diffractometer (XRD) and UV-Vis spectrophotometer were used to analyze structure and optical properties of thin films. Direct Blue 71 (DB71) was used for photocatalytic evaluation under UV light irradiation. XRD result showed that all prepared thin films have wurtzite structure with better crytalinity compared to double layer preparation and increasing concentration of Ag doping. UV-Vis transmittance spectra showed that decreasing of transparency of films followed by DL preparation and Ag doping concentration. By using envelope method, energy gap of films can be determined. ZnO/ZnO:Ag 6% (DL 6%) indicated the smallest energy gap 3,038 eV. The highest DB71 degradation result under UV light irradiation was reached by DL 6% with 55.43% and 8.56 x 10-3 min-1 for photocatalytic efficiency and photodegradation rate, respectively.
Pengaruh Konsentrasi Doping Nitrogen (N) pada Material Fotokatalis Seng Oksida (ZnO) Terhadap Degradasi Limbah Zat Pewarna Tekstil Heri Sutanto; Eko Hidayanto; Muhammad Irwanto; Agus Romadhon; Yoyon Wahyono
Reaktor Volume 17 No.1 Maret 2017
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (381.44 KB) | DOI: 10.14710/reaktor.17.1.36-42

Abstract

Abstract THE EFFECT OF NITROGEN (N) DOPING IN PHOTOCATALYST MATERIAL OF ZINC OXIDE (ZnO) ON DEGRADATION OF WASTE OF TEXTILES DYE. The textile industry produces 50% of the wasted dye and liquid waste which can cause damage to the river ecosystem. The results of synthesis and characterization of N-ZnO photocatalysts and its ability to degrade waste water of batik dye by identifying of the effect of nitrogen (N) doping on ZnO were reported in this paper. Synthesis of N-ZnO material was performed using sol-gel method at room temperature, then the solution was deposited on a glass substrate at 450oC with a spray coating method. N-ZnO was prepared by N doping with different percentages of 0, 3, 5, 7 and 9%, respectively. Degradation of dye waste was performed under UV radiation for 12 hours. The synthesis results show that thin layers have wurtzite polycrystalline structure with dominant orientation field (002). The addition of N doping causes the value of the energy band gap of ZnO to be smaller. The test results of photocatalysts show that the addition of doping N on ZnO does not have a significant influence on the percentage of degradation waste batik dye under UV light. The best ability of N-ZnO photocatalytic was obtained in 5% of N doping, and the degradation percentage, COD and BOD were 11.83%, 6.12% and 6.40% respectively. Keywords: degradation; N doped; ZnO photocatalyst; batik dye waste   Abstrak Industri tekstil menghasilkan 50% zat warna yang terbuang dan menjadi limbah dalam bentuk cair yang dapat mengakibatkan rusaknya ekosistem sungai. Pada paper ini dilaporkan hasil sintesis dan karakterisasi fotokatalis N-ZnO serta uji kemampuan fotokatalitiknya dalam mendegradasi limbah cair zat pewarna batik dengan mengidentifikasi pengaruh doping Nitrogen (N) pada ZnO. Sintesis material N-ZnO menggunakan metode sol-gel pada temperatur kamar, kemudian larutan dideposisi di atas substrat kaca pada temperatur 450oC dengan metode spray coating. Material N-ZnO dibuat dengan persentase doping N yang berbeda yaitu 0, 3, 5, 7, dan 9%. Degradasi limbah zat warna dilakukan dibawah radiasi sinar UV selama 12 jam. Hasil sintesis menunjukkan bahwa lapisan tipis mempunyai struktur polikristal wurtzite dengan bidang orientasi dominan (002). Penambahan doping N secara umum menyebabkan terjadinya pengecilan nilai celah pita energi ZnO. Hasil uji fotokatalitik menunjukkan bahwa penambahan doping N pada ZnO tidak memberikan pengaruh yang signifikan terhadap persentase degradasi limbah cair pewarna batik dibawah cahaya UV. Diperoleh kemampuan uji fotokatalitik N-ZnO terbaik pada doping N sebesar 5% dengan nilai % degradasi sebesar 11,83%, COD 6,12% dan BOD 6,40%. Kata kunci: degradasi; doping N; fotokatalis ZnO; limbah pewarna batik .
Co-Authors Abdul Rofiq Achmad Chalid Afif Afrio Rika. R Agus Joko Prasetyo Agus Romadhon Agus Subagio Ahmad Pradana Alfia Hanim Ali Khumaeni Ali, Mohd Hanafi Ana Aprilia Anugrah Rahma Ari Wiganti Ardian Handoko Ari Bawono P Ari Bawono Putranto Ariij Naufal Arisa Dwi Sakti Astri Suppa Supratman Bambang Haris Suhartono, Bambang Haris Budi Muhammad AR Candra Ancila Choirul Anam AM Diponegoro Diah Dwiana Lestari Duandini, Ega Elin Nuraini Elvira Rizqi Widyanti Erna Mariani Etika, Eva Anggun Evi Setiawati Galih Puspa Saraswati Galih Puspa Saraswati Gani Gunawan Gede Wiratma Jaya H Hadiyanto Hella Arofah Heri Sugito Heri Sutanto Hidayatullah Hidayatullah I. Istadi Idam Arif Iis Nurhasanah Indras Marhaendrajaya Insiano, Dewi A. Iva Nistiyanti Jhonwesly Manik Jonathan, Felix Josepa ND Simanjuntak Jun Kawai K Sofjan Firdausi Lamtiyah Ikha Indriyana M Rizqi Aditya Rahman Mariatul Khiftiyah Maya, Annisa Tenri Miftahul Aziz Mohammad Haekal Muahamad Irsal Much. Azam Muchammad Azam, Muchammad Muhammad Irwanto Muhammad Nur Muharam Budi Laksono, Muharam Budi Mulatomo, Tunggul Drajat Naufal, Ariij Nur Paramita Nira Mulyono Nurul Hikmantiyah Nurulita, Syaphira Faza Pandji Triadyaksa Poppy Intan Tjahaja Poppy Intan Tjahaja Puput Khusnaiatul Putri Parmitasari Putu Sukmabuana Qalby, Luthfia Rafli Filano Rahmawati Hidayah Rini Shintawati Salimatul Litasova Sanggam Ramantisan Sanggam Ramantisan Sanggam Ramantisan Santi Yuli Astuti Singgih Wibowo Sri Murni Susila Wardaya, Susila Takashi Yamamoto Teruo Tanabe Tiffany Rahma Novestiana Tina Melinda Tri Windarti Ukhti Lailun Nisa Very Richardina Wahyu Setia Budi Wahyu Tri Cahyanto Wahyuddin Wahyuddin Yoyon Wahyono Yoyon Wahyono Zaenal Arifin