Pengaruh Penambahan Nanopartikel ZnO Terhadap Morfologi Nanokomposit TiO2/ZnO

Lusi Safriani, Adelia Septyani, Annisa Aprilia

Abstract


Lapisan fotoanoda yang pada umumnya berupa material semikonduktor oksida merupakan bagian penting pada sel surya tersensitasi dye. Fotoanoda memfasilitasi transfer elektron dari dye sensitizer ke sirkuit luar dan injeksi elektron dari dye sensitizer. Fotoanoda sebaiknya memiliki luar permukaan dan pori  yang tinggi sehingga dapat menampung kapasitas dye sensitizer dengan optimal. Untuk meningkatkan fungsi fotoanoda berbasis TiO2, dapat dilakukan dengan menambahkan nanopartikel ZnO. Hasil karakterisasi menunjukkan bahwa penambahan nanopartikel tidak mengubah struktur masing-masing komponen, ZnO memiliki struktur hexagonal wurtzite sedangkan TiO2 memiliki struktur tetragonal pada fasa anatase. Morfologi permukaan nanopartikel ZnO, TiO2 dan nanokomposit TiO2/ZnO cukup homogen dengan partikel berbentuk sferis. Penambahan nanopartikel ZnO mempengaruhi luas permukaan spesifik dan volume pori nanokomposit TiO2/ZnO. Dibandingkan dengan luas permukaan spesifik dan volume pori TiO2, penambahan nanopartikel ZnO meningkatkan luas permukaan spesifik sebesar 68% dan volume pori-pori spesifik menjadi tiga kali volume pori-pori TiO2.

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DOI: https://doi.org/10.24198/jiif.v6i2.41201

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