CD Tesis

Nanostruktur TiO2/Co3O4 Sebagai Fotoanoda Pada Proses Pemisahan Molekul Air

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Titanium dioxide is one of the most investigated materials for photoelectrochemical (PEC) water splitting. However, TiO2 has a wide band gap of approximately 3.2 eV, which limits its absorption energy to UV only, and the photoexcitation products (i.e., electron and hole) easily recombine. Developing a composite with other semiconductor materials is one of the efforts for improving the performance of TiO2 photoelectrode. In this study, a composite of TiO2/Co3O4 thin films was developed, and its performance in PEC water splitting was investigated. Co3O4 was synthesized using a hydrothermal method, and TiO2 P25 was used. TiO2 and Co3O4 were mixed by ball milling before coating on a clean FTO and annealing at 350 and 550 oC. Two weight variations of TiO2:Co3O4 were used (95:5 and 90%:10%). XRD and FESEM analysis were used to investigate crystallinity phase and surface morphology. Raman spectrum showed that existance of O-Ti-O bending and stretching Ti-O on TiO2.The optical band gap of the thin films was determined by UV-Vis spectroscopy, where the film with 90:10 weight ratio of TiO2:Co3O4 obtained the smallest band gap of 2.9 eV. Co3O4 improved the photocurrent density and TiO2 performance by approximately three times.

Key words: TiO2, Co3O4, ball-milling, annealing, band gap.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

10 05. 219 (0007)

Penerbit

Pekanbaru : Universitas Riau – Pascasarjana – Tesis Kimia., 2019

Deskripsi Fisik

x, 101 hlm.; ill.; 29 cm

Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

10 05. 219 (0007)

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

PASCASARJANA (MAGISTER) KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

FATAH

Versi lain/terkait

Lampiran Berkas

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