Review on heterophase/homophase junctions for efficient photocatalysis: The case of phase transition construction

Yang, Kai; Li, Xiaoxiao; Yu, Changlin; Zeng, Debin; Chen, Fanyun; Zhang, Kailian; Huang, Weiya; Ji, Hongbing

doi:10.1016/s1872-2067(19)63290-0

Cited by 100 publications

(35 citation statements)

References 200 publications

(221 reference statements)

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“…where I β and I α are the intensities of the strongest lines of the Xray diffraction patterns of β-Bi [22] which can minimize the energy barrier at the interface between β-Bi 2 O 3 and α-Bi 2 O 3 so that the photogenerated electrons and holes can smoothly migrate to the opposite sites in photocatalysis. [40,41] To verify the above hypothesis, electrochemical impedance spectra (EIS) analysis was conducted to gain further insight into the charge transfer kinetics of the β/α-Bi 2 O 3 phase junction.…”

Section: Resultsmentioning

confidence: 99%

“…[18][19][20][21] Due to the fact that different crystalline phases of the specific semiconductor always possess distinguished thermodynamical properties, most of the heterophase junction formation is tuned through thermal-induced processes. [22] Taking TiO 2 as an example, anatase is kinetically stable at relatively low temperatures and the phase transforms from anatase to rutile generally occur over high temperatures or high pressures. However, in many cases, the origin morphologies of semiconductors are totally changed in these processes and the unique morphology-tailoring structures are always destroyed.…”

Section: Introductionmentioning

confidence: 99%

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Self‐templated Constructing of Heterophase Junction into Hierarchical Porous Structure of Semiconductors for Promoting Photogenerated Charge Separation

Zhang

Liang

et al. 2020

ChemCatChem

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It is well‐known that photogenerated charge separation is the key and bottleneck step to determine the solar energy efficiency in photocatalysis. Although strategies for facilitating spatial charge separation of semiconductor‐based photocatalysts like heterojunctions, especially for heterophase junctions have been recognized as useful and adequate approaches, the original morphology‐tailored structures are always challenging to be maintained during the thermal‐induced phase transformation process. Herein, using a facile self‐templated method, we successfully fabricate heterophase junction into the well‐defined hierarchical porous structure of visible‐light‐responsive semiconductor, bismuth oxide (Bi2O3), without destroying the its unique hierarchical porous morphology. Such organic integration of heterophase junction and hierarchical porous structure are demonstrated to enable highly efficient separation of photogenerated electrons and holes, resulting in a remarkable enhancement in photocatalytic activities. Our work showcases a general concept for developing artificial photocatalyst systems via integrating efficient charge separation path into the unique morphology‐tailoring of semiconductors for highly efficient solar energy conversion.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Self‐templated Constructing of Heterophase Junction into Hierarchical Porous Structure of Semiconductors for Promoting Photogenerated Charge Separation

Zhang

Liang

et al. 2020

ChemCatChem

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“…The construction of the phase junction is a significant approach to improve the photocatalytic performance through accelerating the migration of electrons and holes. Many studies have been conducted on the design of photocatalyst phase junctions to boost carrier migration characteristics and capabilities [275] , [276] . Jia et al .…”

Section: Strategies For Photocatalytic Activity Improvementmentioning

confidence: 99%

Recent advances in photodegradation of antibiotic residues in water

Yang

Chen

Zhao

et al. 2021

Chemical Engineering Journal

268

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“…[5][6][7][8] There are many kinds of photocatalysts, including metal sul¯des, metal oxides, and so on. [9][10][11] As is well known, most semiconductor catalysts contain metallic elements, which may be expensive in large-scale production and cause secondary pollution. 12 Thus, it is desired to exploit and optimize the metal-free photocatalysts with e±cient performance.…”

Section: Introductionmentioning

confidence: 99%

A Novel Approach to Synthesize Nitrogen-Deficient g-C₃N₄for the Enhanced Photocatalytic Contaminant Degradation and Electrocatalytic Hydrogen Evolution

Zhang

Zhou

et al. 2020

NANO

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Graphitic carbon nitride with nitrogen vacancies was successfully synthesized by the three-step method for the calcination of melamine, following urea-assisted hydrothermal and jacjoin calcination approach. The structural, surface, optical and electric properties were characterized by XRD, FT-IR, SEM, TEM, UV–Vis DRS, PL, N2 physical adsorption/desorption and electrochemical methods, which proved that this strategy of modifying g-C3N4 by nitrogen vacancies not only increased the specific surface area, exposed more active sites, but also inhibited the recombination of photogenerated carriers on the surface of photocatalysts, resulting in the enhancement of photocatalytic and electrocatalytic performances. The photocatalytic activities were measured under visible light irradiation ([Formula: see text][Formula: see text]nm), and their degradation efficiencies could be achieved for 99.8%, 55%, 100% and 99.7% corresponding to that of rhodamine B, acid orange II, methyl orange and methylene blue, respectively. The trapping experiments demonstrated that [Formula: see text] played an important role in the degradation process. In addition, being an active electrocatalyst, nitrogen-deficient g-C3N4 showed a lower Tafel slope, smaller overpotential and the more effective electrochemical surface area compared with that of bare g-C3N4 in neutral media. This work underlines the importance of defect engineering to promote catalytic performance, which can provide a simple and efficient way for modifying g-C3N4 and other N-based catalysts.

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Review on heterophase/homophase junctions for efficient photocatalysis: The case of phase transition construction

Cited by 100 publications

References 200 publications

Self‐templated Constructing of Heterophase Junction into Hierarchical Porous Structure of Semiconductors for Promoting Photogenerated Charge Separation

Self‐templated Constructing of Heterophase Junction into Hierarchical Porous Structure of Semiconductors for Promoting Photogenerated Charge Separation

Recent advances in photodegradation of antibiotic residues in water

A Novel Approach to Synthesize Nitrogen-Deficient g-C₃N₄for the Enhanced Photocatalytic Contaminant Degradation and Electrocatalytic Hydrogen Evolution

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Review on heterophase/homophase junctions for efficient photocatalysis: The case of phase transition construction

Cited by 100 publications

References 200 publications

Self‐templated Constructing of Heterophase Junction into Hierarchical Porous Structure of Semiconductors for Promoting Photogenerated Charge Separation

Self‐templated Constructing of Heterophase Junction into Hierarchical Porous Structure of Semiconductors for Promoting Photogenerated Charge Separation

Recent advances in photodegradation of antibiotic residues in water

A Novel Approach to Synthesize Nitrogen-Deficient g-C3N4for the Enhanced Photocatalytic Contaminant Degradation and Electrocatalytic Hydrogen Evolution

Contact Info

Product

Resources

About

A Novel Approach to Synthesize Nitrogen-Deficient g-C₃N₄for the Enhanced Photocatalytic Contaminant Degradation and Electrocatalytic Hydrogen Evolution