Advances in Photocatalytic CO2 Reduction with Water: A Review

Nahar, Samsun; Zain, Muhammad Fauzi Mohd.; Kadhum, Abdul Amir H.; Hasan, Hassimi Abu; Hasan, Md. Riad

doi:10.3390/ma10060629

Cited by 200 publications

(92 citation statements)

References 163 publications

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“…[6][7][8][9][10][11] As one of the most popular photocatalytic materials, TiO 2 is chemically stable, nontoxic and earth-abundant to be proverbially utilized for CO 2 photoreduction. As an emerging carbon allotrope, graphdiyne (GDY) features 2D characteristics and unique carboncarbon bonds.…”

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confidence: 99%

Graphdiyne: A New Photocatalytic CO₂ Reduction Cocatalyst

Meng

Zhu

et al. 2019

Adv Funct Materials

242

178

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Exploring new and efficient cocatalysts to boost photocatalytic CO 2 reduction is of critical importance for solar-to-fuel conversion. As an emerging carbon allotrope, graphdiyne (GDY) features 2D characteristics and unique carboncarbon bonds. Herein, a novel GDY cocatalyst coupled TiO 2 nanofibers for boosted photocatalytic CO 2 reduction, synthesized by an electrostatic selfassembly approach is reported. First-principle calculation and in situ X-ray photoelectron spectroscopy measurement reveal that the delocalized electrons in GDY can hybrid with the empty orbitals in TiO 2 within the TiO 2 /GDY network, leading to the formation of an internal electric field at the interfaces, pointing from GDY to TiO 2 . The theoretical simulation further implies strong chemisorption and deformation of CO 2 molecules upon GDY, which can be verified by in situ diffuse reflectance infrared Fourier transform spectroscopy. These effects, in combination with the photothermal effect of GDY, result in enhanced charge separation and directed electron transfer, enhanced CO 2 adsorption and activation as well as accelerated catalytic reactions over the TiO 2 /GDY heterostructure, thereby resulting in significantly improved CO 2 photoreduction efficiency and meanwhile with remarkable selectivity. This work demonstrates that GYD can function as a highly effective cocatalyst for solar energy harvesting and may be used in other catalysis processes.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adfm.201904256. solar irradiation is recognized as a potential solution to these issues. [6][7][8][9][10][11] As one of the most popular photocatalytic materials, TiO 2 is chemically stable, nontoxic and earth-abundant to be proverbially utilized for CO 2 photoreduction. [12][13][14][15][16] However, the photocatalytic efficiency of unitary TiO 2 is still far away from the practical requirements largely due to its rapid electron-hole recombination. [17][18][19][20] Modifying TiO 2 with a cocatalyst has been widely adopted to tackle this issue owing to the advantages of cocatalysts such as improving the selectivity, minimizing the overpotentials, promoting the charge separation, enhancing the adsorption of CO 2 , suppressing the photocorrosion and so on. [21,22] Up to now, various cocatalysts have been exploited to promote the photocatalytic performance of TiO 2 and the most widely used cocatalysts were noble metals, such as Pt, Pd, Au, Ag, and their alloys. [23][24][25][26][27][28] However, noble metals are scarce and expensive, hindering their prospect severely. Therefore, it is of significance to search for novel cocatalysts for TiO 2 -based photocatalyst to improve the photocatalytic CO 2 reduction performance.Carbon allotropes such as 0D carbon dot, 1D carbon nanotube and 2D graphene have attracted significant interests in many fields including catalysis, new device structures and solar energy harvesting. [29][30][31] Particularly, the discovery of graphene has raised a wave of new ...

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Graphdiyne: A New Photocatalytic CO₂ Reduction Cocatalyst

Meng

Zhu

et al. 2019

Adv Funct Materials

242

178

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“…Photocatalysis consists of two parts – ‘photo’ and ‘catalysis’. This means that the change in reaction rate during the chemical transformation of reactants into products without being involved in the reaction that is driven by irradiation of light . Photocatalysts are the substances that facilitate the active surface sites for pollutant or reactant molecule to adsorb/adhere at its surface.…”

Section: Recent Advancement In the Area Of Disinfection Researchmentioning

confidence: 99%

Bacterial Lysis via Photocatalysis ‐ A Critical Mechanistic Review

Gupta

Modak

2020

ChemCatChem

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This Review discusses one of the most important area of photocatalytic reactions. In current research scenario, photocatalysis is well utilized strategy for a wide variety of applications including organic/ inorganic decontamination, solar fuel generation, microbial disinfection etc. This Review touches upon the mechanistic aspect of microbial disinfection, the growth in the research, issues to be addressed in future to make it a sustainable technology for this application. This Review discusses the fundamental understanding of photocatalysis, important strategies to tune their optical properties to enhance the spectral range of absorption in visible and near infrared wavelength region. Various photocatalysis reports these days don't focus on the stability, reusability and recovery of the photocatalysts. However, these issues are very important to deal with for large scale viability of the process. Therefore, we have tried to address these issues along with the detailed experimental information and eliminate the misconceptions about bacterial disinfection. The details provided in this Review would help the researchers working in this area to a large extent and would open various questions for them to answer.

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“…Among photocatalytic materials, TiO 2 has attracted much attention in scientific research as well as commercial applications. TiO 2 is well‐known as an efficient photocatalyst in air and water purification, water splitting, and the disinfection of surfaces . It has been demonstrated that including TiO 2 in the composition of a surface coating is a good approach to fabricating self‐cleaning materials .…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Structured Multifunctional Self‐Cleaning Material with Durable Superhydrophobicity and Photocatalytic Functionalities

Zhang

Liu

Salim

et al. 2019

Small

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surface by different behaviors toward the water. Superhydrophilic surfaces, where the water contact angle is less than 5°, can be cleaned by the spreading of water across the surface or a stream of water, like rainfall. [6] In contrast, on superhydrophobic surfaces, water forms spherical droplets that roll across the surface, carrying away contamination particles. [7] This phenomenon is known as the "lotus effect," [8] whose origin is the surface energy and the roughness of the corresponding surface. [9] In comparison, there are more advantages in choosing superhydrophobicity over superhydrophilicity as self-cleaning materials due to the reduction of bacterial and contamination adhesion, [10] and their waterproof and antimist characteristics. [11] To achieve a superhydrophobic surface with a water contact angle of more than 150°, a low surface energy material is necessary, as well as a high roughness of micro-or nanostructured surface architecture. Therefore, hydrophobic polymers, alkyl silanes, or semifluorinated silanes are candidates for the generation of superhydrophobic surfaces. [12] Methods for constructing nano-or microstructure surfaces are important for realizing superhydrophobic surfaces. However, these methods are limited to particular substrates (e.g., silicon wafer or aluminum foil) or by the complexity of processing (e.g., lithography and anodization), which restrict its broader applications. Moreover, surface superhydrophobicity could be damaged by the oily contamination from organic compounds or bacterial biofilm. [13] Thus, a functionality which can maintain the surface superhydrophobicity is of pivotal importance to keep the durability of self-cleaning materials. One of the most convenient and effective ways to achieve that is through compositing photocatalysts.Artificial photocatalytic surfaces have become increasingly popular over the recent decades since their discovery by Fujishima and Honda in 1972. [14] Among photocatalytic materials, TiO 2 has attracted much attention in scientific research as well as commercial applications. TiO 2 is well-known as an efficient photocatalyst in air and water purification, water splitting, and the disinfection of surfaces. [15] It has been demonstrated that including TiO 2 in the composition of a surface coating is a good approach to fabricating self-cleaning materials. [16] Self-cleaning materials, which are inspired and derived from natural phenomena, have gained significant scientific and commercial interest in the past decades as they are energy-and labor-saving and environmentally friendly. Several technologies are developed to obtain self-cleaning materials. The combination of superhydrophobic and photocatalytic properties enables the efficient removal of solid particles and organic contaminations, which could reduce or damage the superhydrophobicity. However, the fragility of the nanoscale roughness of the superhydrophobic surface limits its practical application. Here, a hierarchical structure approach combining micro-and nanoscale architecture...

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Advances in Photocatalytic CO2 Reduction with Water: A Review

Cited by 200 publications

References 163 publications

Graphdiyne: A New Photocatalytic CO₂ Reduction Cocatalyst

Graphdiyne: A New Photocatalytic CO₂ Reduction Cocatalyst

Bacterial Lysis via Photocatalysis ‐ A Critical Mechanistic Review

Hierarchical Structured Multifunctional Self‐Cleaning Material with Durable Superhydrophobicity and Photocatalytic Functionalities

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Advances in Photocatalytic CO2 Reduction with Water: A Review

Cited by 200 publications

References 163 publications

Graphdiyne: A New Photocatalytic CO2 Reduction Cocatalyst

Graphdiyne: A New Photocatalytic CO2 Reduction Cocatalyst

Bacterial Lysis via Photocatalysis ‐ A Critical Mechanistic Review

Hierarchical Structured Multifunctional Self‐Cleaning Material with Durable Superhydrophobicity and Photocatalytic Functionalities

Contact Info

Product

Resources

About

Graphdiyne: A New Photocatalytic CO₂ Reduction Cocatalyst

Graphdiyne: A New Photocatalytic CO₂ Reduction Cocatalyst