[1] Zulkarnain Chaidir, Desi Nurakbari, Marniati Salim, Zainul R 2016 Optimization of Spirulina Platensis Culture for Antioxidant Production, Der Pharmacia Lettre 8 73-78


[2] I. F, Sugiharto E, Wijaya K, Tahir I, Kamalia 2006 Titanium Oxide Dispered On Natural Zeolite (TiO2/Zeolite) And Its Application For Congo Red Photodegradation, Indonesian Journal of Chemistry 6 8-42


[3] Sakthivel S, Neppolian B, Shankar V, Arabindoo B, Palanichamy M, Murugesen V 2003 Solar Photocatalytic Degradation of Azo Dye Comparison of Photocatalytic Efficiency of ZnO and TiO2, Sol. Energy Mater. Sol. C 77 65-82


[4] Zainul R 2016 Effect of Temperature and Particle Motion Against the Ability of ZnO Semiconductor Photocatalyst in Humic Acid Der Pharmacia Lettre 8 pp. 120-124


[5] Zainul R 2016 Determination of the Half-Life and the Quantum Yield of ZnO Semiconductor Photocatalyst in Humic Acid Der Pharmacia Lettre 8 pp. 176-179


[6] Zainul R 2016 Design and Modification of Copper Oxide Electrodes for Improving Conversion Coefficient Indoor Lights (PV-Cell) Photocells Der Pharma Chemica 8 pp. 388-395


[7] Zainul R, Alif A, Aziz H, Arief S, Darajat S 2015 Modifikasi dan Karakteristik I-V Sel Fotovoltaik Cu2O/Cu-Gel Na2SO4 Melalui Iluminasi Lampu Neon, Eksakta Berkala Ilmiah Bidang MIPA 15 50-56


[8] An T, Liu X, Hu X, Sheng G, Fu J, Zhang M 2010 Preparation of a High-Activity ZnO/TiO2 Photocatalyst via Homogeneous Hydrolysis with Low Temperature Crystallization Method, Materials Journal Letters 64 1883-1886


[9] Kowsari E, Ghezelbash M 2012 Ionic Liquid-Assisted Facile Synthesis of ZnO/SnO2 Nanocomposites and Investigation of Their Photocatalytic Activity, Journal of Matterial Letters 68 17-20


[10] Y. C, Kai Y, Qing S, Jimmy Y, Fangfang C, Xin L 2011 Preparation of WO3/ZnO Composite photocatalyst and Its Photocatalytic Performance, Chines Journal and Catalysis 32555-565 555-565


[11] Dm F, W.Hechenleitner, Silva M, Lima M, Bittencourt P, R.Silva, Melo M C, Pineda E 2009 Preparation and characterization of NiO, Fe2O3 , Ni0.04Zn0.96O and Fe0.03Zn0.97O, Journal of Nano Materials. 118: 447-452 118 447-452


[12] Li B, Y.Wang Facile Synthesis and Photocatalytic Activity of ZnO-CuO Nanocomposite, Journal of Superlattices Microstructures 47 615-623


[13] Shouqiang W, S., Ma. Y C Y, Shao Z 2010 Fabrication of CuO/ZnO Composite Films with Cathodic co-Electrodeposition and Their Photocatalytic Performance, Journal of Molecules and Catalysis 331 112-116


[14] Liu Z, J.C.Deng., J.J.Deng, F.F.Li. 2008 Fabrication and Photocatalysis of CuO/ZnO Nano-Composites via a New MethodJournal of Material Science and Enginering, Journal of Material Science and Enginering 150 99-104


[15] Sathishkumar P, Sweena. R, Wu. J J, Anandan S 2011 Synthesis of CuO-ZnO Nanophotocatalyst for Visible Light Assisted Degradation of a Textile Dye in Aqueous Solution, Journal of Chemistry. Engineering 171 136-140


[16] Wongpisutpaisan, N. P C, N.Vittayakorn, W.Pecharapa 2011 Sonochemical Synthesis and Characterization of Copper Oxide Nanoparticles, Journal of Energy Procedia 9 404-409


[17] Wei Y, Chang P 2008 Characteristics of Nano Zinc Oxide Synthesized Under Ultrasonic Condition, Journal of Physics and Chemistry of Solids 69 688-692


[18] Xiao Q, Huang S, J.Zhang, C.Xiao, X.Tan 2008 Sonochemical Synthesis of ZnO Nanosheet, Journal of Alloy Compound 459 L18-L22


[19] Kas R, O.Birer 2012 Sonochemical Shape Control of Copper Hydroxysulfates, Journal of Ultrasound and Sonochemistry 19 692–700


[20] Kasuma N Y 2012 Penggunaan Komposit Zno-Cuo Yang Disintesis Secara Sonochemistry Yang Digunakan Sebagai Katalis Untuk Fotodegradasi Metil Orange Dan Zat Antibakteri, Tesis. Padang FMIPA Universitas Andalas


[21] Sanjaya H 2009 Fotodegradasi Sufaktan Linear Alkil Sulfonat (LAS) Menggunakan Sinar UV 254 nm Dengan Bantuan Semikonduktor ZnO Sebagai Fotokatalis, Laboratorium Kimia Lingkungan Program Studi Kimia Universitas Andalas