Next Article in Journal
Recent Progress in the Voltage-Controlled Magnetic Anisotropy Effect and the Challenges Faced in Developing Voltage-Torque MRAM
Previous Article in Journal
Modeling and Analysis of the Noise Performance of the Capacitive Sensing Circuit with a Differential Transformer
Previous Article in Special Issue
Enhanced Photocatalytic Performance and Mechanism of [email protected]3 Composites with Au Nanoparticles Assembled on CaTiO3 Nanocuboids
Article Menu

Export Article

Open AccessReview

TiO2 Based Nanostructures for Photocatalytic CO2 Conversion to Valuable Chemicals

1
Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, 1.5 KM Defence Road, Off Raiwind Road, Lahore 54000, Pakistan
2
Department of Energy Science & Engineering, DGIST, 333 Techno Jungang-daero, Hyeonpung-myeon, Dalseong-gun, Daegu 42988, Korea
*
Author to whom correspondence should be addressed.
Micromachines 2019, 10(5), 326; https://doi.org/10.3390/mi10050326
Received: 20 April 2019 / Revised: 1 May 2019 / Accepted: 8 May 2019 / Published: 15 May 2019
(This article belongs to the Special Issue Nanostructures for Photocatalysis)
  |  
PDF [4775 KB, uploaded 16 May 2019]
  |  

Abstract

Photocatalytic conversion of CO2 to useful products is an alluring approach for acquiring the two-fold benefits of normalizing excess atmospheric CO2 levels and the production of solar chemicals/fuels. Therefore, photocatalytic materials are continuously being developed with enhanced performance in accordance with their respective domains. In recent years, nanostructured photocatalysts such as one dimensional (1-D), two dimensional (2-D) and three dimensional (3-D)/hierarchical have been a subject of great importance because of their explicit advantages over 0-D photocatalysts, including high surface areas, effective charge separation, directional charge transport, and light trapping/scattering effects. Furthermore, the strategy of doping (metals and non-metals), as well as coupling with a secondary material (noble metals, another semiconductor material, graphene, etc.), of nanostructured photocatalysts has resulted in an amplified photocatalytic performance. In the present review article, various titanium dioxide (TiO2)-based nanostructured photocatalysts are briefly overviewed with respect to their application in photocatalytic CO2 conversion to value-added chemicals. This review primarily focuses on the latest developments in TiO2-based nanostructures, specifically 1-D (TiO2 nanotubes, nanorods, nanowires, nanobelts etc.) and 2-D (TiO2 nanosheets, nanolayers), and the reaction conditions and analysis of key parameters and their role in the up-grading and augmentation of photocatalytic performance. Moreover, TiO2-based 3-D and/or hierarchical nanostructures for CO2 conversions are also briefly scrutinized, as they exhibit excellent performance based on the special nanostructure framework, and can be an exemplary photocatalyst architecture demonstrating an admirable performance in the near future. View Full-Text
Keywords: TiO2; 1-D nanostructures; 2-D nanostructures; hierarchical nanostructures; photocatalytic CO2 conversion; reactions mechanism TiO2; 1-D nanostructures; 2-D nanostructures; hierarchical nanostructures; photocatalytic CO2 conversion; reactions mechanism
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Razzaq, A.; In, S.-I. TiO2 Based Nanostructures for Photocatalytic CO2 Conversion to Valuable Chemicals. Micromachines 2019, 10, 326.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Micromachines EISSN 2072-666X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top