Details

Autor(en) / Beteiligte

• Rostami, Mojtaba
• Badiei, Alireza
• Ganjali, Mohammad Reza
• Rahimi-Nasrabadi, Mehdi
• Naddafi, Mastoureh
• Karimi-Maleh, Hassan

Titel

Nano-architectural design of TiO2 for high performance photocatalytic degradation of organic pollutant: A review

Ist Teil von

• Environmental research, 2022-09, Vol.212, p.113347-113347, Article 113347

Ort / Verlag

Elsevier Inc

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• In the past several decades, significant efforts have been paid toward photocatalytic degradation of organic pollutants in environmental research. During the past years, titanium dioxide nano-architectures (TiO2 NAs) have been widely used in water purification applications with photocatalytic degradation processes under Uv/Vis light illumination. Photocatalysis process with nano-architectural design of TiO2 is viewed as an efficient procedure for directly channeling solar energy into water treatment reactions. The considerable band-gap values and the subsequent short life time of photo-generated charge carriers are showed among the limitations of this approach. One of these effective efforts is the using of oxidation processes with advance semiconductor photocatalyst NAs for degradation the organic pollutants under UV/Vis irradiation. Among them, nano-architectural design of TiO2 photocatalyst (such as Janus, yolk-shell (Y@S), hollow microspheres (HMSs) and nano-belt) is an effective way to improve oxidation processes for increasing photocatalytic activity in water treatment applications. In the light of the above issues, this study tends to provide a critical overview of the used strategies for preparing TiO2 photocatalysts with desirable physicochemical properties like enhanced absorption of light, low density, high surface area, photo-stability, and charge-carrier behavior. Among the various nanoarchitectural design of TiO2, the Y@S and HMSs have created a great appeal given their considerable large surface area, low density, homogeneous catalytic environment, favorable light harvesting properties, and enhanced molecular diffusion kinetics of the particles. In this review was summarized the developments that have been made for nano-architectural design of TiO2 photocatalyst. Additional focus is placed on the realization of interfacial charge and the possibility of achieving charge carriers separation for these NAs as electron migration is the extremely important factor for increasing the photocatalytic activity. •Nano-architectural design of TiO2 are demonstrated as an emerging photocatalytic activity under visible light illumination.•Janus nanostructures were proved efficient charge transfer and strong LSPR-mediated near-field effects.•Light absorption in the cavity of hollow and yolk-shell nanostructures could be reflected for many times.•Hollow and yolk-shell nanostructures with high surface area and low density provide active sites for photocatalytic activity.•TiO2 nanobelts have been high surface area and superior photocatalytic activity than P25.