Sonochemical/hydration-dehydration synthesis of Pt-TiO₂ NPs/decorated carbon nanotubes with enhanced photocatalytic hydrogen production activity

authored by

F.H. Abdulrazzak, F.H. Hussein, A.F. Alkaim, I. Ivanova, A.V. Emeline, D.W. Bahnemann

Abstract

Modified Pt-TiO

₂ NPs/decorated carbon nanotubes were synthesized utilizing sonochemical/hydration-dehydration techniques. Pt was loaded on TiO

₂ by a photodeposition method keeping in mind the end goal to achieve electron-hole pair separation and promote the surface reaction. The morphological and basic properties of Pt-TiO

₂/fCNTs were investigated by field emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM), powder X-ray diffraction (XRD), UV-vis diffuse reflectance spectroscopy (DRS), photoluminescence (PL) and Raman spectroscopy. The selected area electron diffraction (SAED) patterns of Pt-TiO

₂/fCNTs were obtained utilizing TEM-based energy dispersive X-ray spectroscopy (EDXS) analysis. It was found that the TiO

₂ nanoparticles were uniformly distributed on the fCNTs, and the Pt particles were decorated on the surface of TiO

₂/fCNTs. The photocatalytic hydrogen production activity of the Pt

_(0.5%)-TiO

₂/fCNTs

_(0.5%) nanoparticle composites was investigated using a sacrificial agent methanol solution. Pt-loaded TiO

₂ demonstrated a hydrogen evolution rate around 20 times that of TiO

₂/fCNTs

_(0.5%) (fSWCNTs, fMWCNTs). When compared with platinized TiO

₂ in methanol, which was utilized as a control material, Pt-TiO

₂/fCNTs demonstrated an almost 2-fold increment in hydrogen generation.

Organisation(s)

Institute of Technical Chemistry

Type

Article

Journal

Photochemical and Photobiological Sciences

Volume

15

Pages

1347-1357

No. of pages

11

ISSN

1474-905X

Publication date

2016

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.1039/c6pp00240d (Access: Unknown)