Pengaruh Penambahan Ag Terhadap Performa dari Aktivitas Fotokatalitik ZnO yang Disintesa dengan Metode Pirolisa Flame

Anggraeni, Ika Silvia and Septiany, Herlinda (2018) Pengaruh Penambahan Ag Terhadap Performa dari Aktivitas Fotokatalitik ZnO yang Disintesa dengan Metode Pirolisa Flame. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Teknologi nanopartikel telah berkembang secara luas, salah satunya adalah nano semikonduktor sebagai bahan fotodegradasi menggunakan fotokatalis. Zinc oksida telah banyak digunakan dikarenakan stabil kimianya, namun konversinya rendah dan terbatas pada sinar UV. Oleh karena itu, diperlukan cara untuk meningkatkan aktivitas fotokatalis salah satunya dengan penambahan doping perak (Ag). Sehingga, tujuan penelitian ini adalah mempelajari pengaruh penambahan Ag terhadap aktivitas fotokatalitik nanokomposit Ag/ZnO yang disintesa dengan metode flame pyrolysis. Uji fotokatalitik dilakukan dengan mengevaluasi degradasi methylene blue dibawah sinar UV dan matahari. Hasil fotokatalitik menunjukkan bahwa performance terbaik pada saat konsentrasi Ag 5% wt dengan laju degradasi sebesar 98.06% pada penambahan massa sebesar 2mg dibawah sinar matahari. Keberadaan Ag didalam nanokomposit Ag/ZnO dapat diamati menggunakan XRD, SEM dan TEM. Hasil XRD menunjukkan bahwa peak tertinggi Ag pada 20 %wt yaitu pada sudut fase 38.120. Hasil SEM dan TEM terlihat morfologi nanokomposit Ag/ZnO dimana semakin besar doping Ag maka diameter partikel juga semakin besar yaitu pada konsentrasi 20% Ag sebesar 63.5 nm. =============== The development of particle technology is increasing continously, one of which is nano semiconductors as photodegradation materials using photocatalysts. Zinc oxide has been used because of its stable chemical, but its conversion is low and limited to UV light. Therefore, it is necessary to increase photocatalyst activity, one of them with the addition of silver (Ag) as a doping material. Thus, the purpose of this research is to study the effect of the Ag content on photocatalytic activity of Ag-ZnO nanocomposite which is synthesized by flame pyrolysis method. Photocatalytic tests were performed by evaluating the degradation of methylene blue under UV and sunlight. Photocatalytic results showed that the best performance at the Ag 5% wt concentration with degradation rate of 98.06% at the addition of 2 mg of mass under the sun. The presence of Ag in Ag-ZnO nanocomposites can be observed using XRD, SEM and TEM. The XRD results show that the highest peak Ag at 20% wt at the phase degree 38.120. SEM and TEM analysis results show that increased doping Ag will also increase the particle size of the particle and the largest particle diameter result is Ag 20% wt is 63.5 nm.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: fotokatalitik; nanokomposit; efisisensi degradasi; photocatalytic; nanocomposite; degradation efficiency
Subjects: Q Science > QD Chemistry > QD281 Pyrolysis
Q Science > QD Chemistry > QD716 Photocatalysis.
T Technology > TP Chemical technology > TP248 Nanogels. Nanoparticles.
Divisions: Faculty of Industrial Technology > Chemical Engineering > (S1) Undergraduate Theses
Depositing User: Ika Silvia Anggraeni
Date Deposited: 21 Mar 2018 01:56
Last Modified: 21 Mar 2018 01:56
URI: http://repository.its.ac.id/id/eprint/50071

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