Sintesis Nanopartikel Zn1-xCuxO Dengan Metode Kopresipitasi

Daratika, Dyah Ayu (2016) Sintesis Nanopartikel Zn1-xCuxO Dengan Metode Kopresipitasi. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Dalam penelitian ini, sintesis nanopartikel Zn1-xCuxO telah dilakukan dengan menggunakan metode kopresipitasi. Bahan dasar yang digunakan antara lain zinc acetat dihydrate, serbuk tembaga, larutan HCl, dan NH4OH. Variasi konsentrasi doping serbuk tembaga yang digunakan yaitu 0, 1, 2, 3, 4, 5, dan 6% wt Cu. Karakterisasi dilakukan dengan menggunakan pengujian X-Ray Diffractometer (XRD), Scanning Electron Microscopy (SEM), spektrofotometer UV-vis, dan LCR meter. Analisis hasil pengujian XRD dilakukan menggunakan software Rietica, dan MAUD. Hasil penelitian menunjukkan bahwa kalsinasi pada temperatur 4000C telah terbentuk fasa Zn1-xCuxO. Pola difraksi menunjukkan bahwa nanopartikel Zn1-xCuxO mengkristal dalam struktur wurtzite. Ukuran kristal diperoleh melalui analisa menggunakan software MAUD diketahui dalam rentang 28 nm - 79 nm. Dan hasil analisis dari pengujian UV-vis menggunakan metode Tauc-Plot menunjukkan bahwa terjadi penurunan energi gap dari 3,10 eV hingga 2,80 eV, dan mengalami kenaikan untuk pendopingan > 4% wt Cu. Hasil ini selaras dengan nilai konduktivitas listrik yang meningkat seiring bertambahnya konsentrasi dopan tembaga (Cu) dari 1,18 x 10-8 S/cm hingga 24,25 x 10-8 S/cm, namun mengalami penurunan untuk pendopingan > 4% ================================================================================================================== In this research, Zn1-xCuxO nanoparticles were synthesized by using coprecipitation method. The raw material used in this experiments were the powders of zinc acetat dihydrate, copper, HCl solution, and NH4OH solution. The doping of copper were used in concentrations 0, 1, 2, 3, 4, 5, and 6% wt Cu. The sample characterized by using X-ray diffractometer (XRD), Scanning Electron Microscopy (SEM), UV-vis spectrophotometer, and LCR meter. The analysis of diffraction data was carried out using Rietica, and MAUD software. From the analysis thermal showed that after calcination at 4000C, Zn1-xCuxO phase were formed. The diffraction patterns indicated that Zn1-xCuxO nanoparticles crystallizes in the wurtzite structure. The crystal size was known by using MAUD software, and found in range 28 nm - 79 nm. And the analysis result of measurement UV-vis spectrophotometer by using Tauc-Plot methods showed that the value of energy gap decrease from 3,10 eV to 2,80 eV, and then increase after doping more than 4% wt Cu. This result giving a reason why the value of the electrical conductivity increases by adding copper as a dopant from 1,18 x 10-8 S/cm to 24,25 x 10-8 S/cm, but decrease after doping more than 4% wt Cu.

Item Type: Thesis (Undergraduate)
Additional Information: RSFi 620.5 Dar s
Uncontrolled Keywords: Doping, Konduktivitas, Kopresipitasi, Tembaga, Zn1-xCuxO
Subjects: T Technology > TP Chemical technology > TP248 Nanogels. Nanoparticles.
Divisions: Faculty of Mathematics and Science > Physics > 45201-(S1) Undergraduate Thesis
Depositing User: ansi aflacha
Date Deposited: 15 Apr 2020 08:15
Last Modified: 15 Apr 2020 08:15
URI: https://repository.its.ac.id/id/eprint/75796

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