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Siltiwi Mandar
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology

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SINTESIS DAN KARAKTERISASI NANO ZnO DOPING CU Siltiwi Mandar; Rahadian Zainul
Jurnal Periodic Jurusan Kimia UNP Vol 8, No 1 (2019): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (268.664 KB) | DOI: 10.24036/p.v8i1.104122

Abstract

The photodegradation process is a combination of photochemical processes with catalysts which are generally semiconductor materials. One of the photocatalysts that is being developed is zinc oxide (ZnO) in nanometer size to optimize the degradation process of organic compounds. Synthesis Nano zinc oxide (ZnO) can use the sol-gel method, the sol-gel method is the best method in making nanoparticles that produce uniform size and high purity. XRD (X-Ray Diffraction) test results show the size of Nano zinc oxide (ZnO) which is 27 nm. Nano zinc oxide (ZnO) has a band band 3.37 eV so that it is less suitable to be applied to visible light. Therefore it is necessary to do coupling with other metals such as Cu. The results of Nano zinc oxide (ZnO) doped Cu 7% have a low band gap of 2.57 eV so that it is easy to excite valence band electrons to the conduction band.
DESAIN DAN KARAKTERISASI SEL SURYA SISTEM ELEKTRODA TEMBAGA (I) OKSIDA (Cu2O/Al) MODEL PIPA PADA LARUTAN NATRIUM SULFAT (Na2SO4) Rahma yulis lubis; Siltiwi Mandar; Rahadian Zainul
Jurnal Periodic Jurusan Kimia UNP Vol 8, No 1 (2019): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (455.295 KB) | DOI: 10.24036/p.v8i1.100628

Abstract

Research has been conducted on "Design and Characterization of Solar Cells for Copper Oxide Electrode System (Cu2O) Model Pipes in Sodium Sulfate Solution (Na2SO4)". Solar cells (photovoltaic cells) are devices that have the ability to convert sunlight energy into electrical energy by applying the principle of photovoltaic. The principle of photovoltaic is defined as a phenomenon of the emergence of electrical voltage due to the contact of two electrodes connected to a solid or liquid system when exposed under sunlight. This study aims to determine the effect of sodium sulfate electolite solution concentration, the effect of measurement time on the generated current, determination of the concentration of solar cells, and the effect of design on electric current. In this solar cell study, the optimum concentration of sodium sulfate was 0.75 M. The measurement time produced power was at 12.00 WIB, then the stability of solar cells on the fifth day and the optimum design of solar cells was in the design 2. The maximum power obtained is 0.12325 mWatt and the electrode ability to produce electricity per area is 49.938412 mWatt / m2 with. The electrode area used is 0.00246804 m2.
Co-Authors Rahadian Zainul Rahma yulis lubis