JOURNAL OF APPLIED POLYMER SCIENCE
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2024
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IF 2.7
Yongning Ma,Panpan Li,Peihan Wu,Mingyuan Guo,Yuhao Yang,Xiaolong Li
In photocatalytic anticorrosion perspective, the migration rate of excited electrons from surface layers to substrate steels restricted the performance of g-C 3 N 4 due to the high resistance between interface of g-C 3 N 4 layers and adhesive layers. Herein, an S-scheme g-C 3 N 4 /polyaniline (PANI) heterojunction with face-to-face structure was established by a secondary calcining method. The as-prepared heterojunctions were applied to protect Q235 carbon steel, and the results showed that the anticorrosion performance of S-scheme g-C 3 N 4 /PANI heterojunction is much higher than that of g-C 3 N 4 and PANI coating layers according to salt spray test. Photocurrent intensity indicated that the optimum amounts of g-C 3 N 4 and PANI were 0.06 and 0.09 mL/cm 2 , which are benefit for the transport of excited electrons due to the optimum thickness of coating layers. Furthermore, the S-scheme g-C 3 N 4 /PANI heterojunction can promote the separation rate of charge carriers and suppress the recombination rate at the same time, which are inferred from photocurrent intensity, electrochemical impedance spectra, super-depth-of-field microscope, and photoluminescence investigation. In the last, the enhanced anticorrosion performance of S-scheme g-C 3 N 4 /PANI heterojunction with face-to-face structure was deduced according to mentioned characterization.
研究领域:
材料科学
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腐蚀与防护
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光催化
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2022
·Vol. 46
·期 44
·21065-21077
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IF 3.925
Zhenlu Liu,Jing Xu,Jiandong Wu,Ye Liu,Lijun Ma,Linying Hu
Photocatalysis is one of the most promising methods to solve the problems of solar energy conversion and sustainable fuel production. Among them, the semiconductor electronic transition to produce hydrogen is the most critical research topic in the field of photocatalysis. ZnS and Ag2Mo2O7 monomers were prepared by the hydrothermal method. The S-scheme heterojunction was formed by electrostatic adsorption of the two materials. The S-scheme heterojunction can improve the separation rate of photogenerated carriers through the built-in electric field so that the hydrogen production rate of the system can reach a maximum of 871.9 μmol g−1 h−1. The system showed a good photoelectric response according to UV-Vis DRS and electrochemistry studies and excellent hydrogen evolution performance. In this study a DFT simulation of the heterojunction interface formed by the system was also carried out, and the relative size of the surface work function indicated the transfer direction and path of electrons.
研究领域:
材料科学
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能源科学
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化学工程
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DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
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2023
·Vol. 106
·期 8
·4785-4793
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IF 3.9
Dafeng Zhang,Ruiqi Zhang,Junchang Liu,Xipeng Pu,Peiqing Cai
Photocatalytic H 2 evolution technique has been proved to be one of the promising approaches to overcome the present energy and environmental issues caused by the combustion of fossil fuel. Constructing heterojunction can realize the efficient separation and migration of charges and thus achieve enhanced H 2 evolution performance. Herein, we designed and prepared a ZnIn 2 S 4 /BiFeO 3 heterojunction photocatalyst with a 3D/2D structure via an ultrasonic self-assembly process. The typical 3D/2D structure with intimate interface was obtained, which not only provided more active sites but also boosted the migration of photogenerated charges. The optimal mass ratio of BiFeO 3 in ZnIn 2 S 4 /BiFeO 3 was determined to be 10%, and a 10.5-fold increase in H 2 evolution rate in comparison with of pure ZnIn 2 S 4 was achieved. Furthermore, the ZnIn 2 S 4 /BiFeO 3 composite exhibited excellent recyclability and structural stability based on cycling experiment. A S-scheme heterojunction mechanism was revealed according to the experimental results of photocatalytic H 2 evolution and electrochemical tests.
研究领域:
材料科学
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能源与环境科学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Jie Zhang,Chengcheng Yuan,Yong Zhang,Changhong Sun,Jiaguo Yu,Liuyang Zhang
Photocatalytic hydrogen peroxide production offers a greener alternative, but its efficiency is limited by high carrier recombination. Covalent organic frameworks, with their highly ordered structures and tunable properties, are promising photocatalysts. However, their application in H 2 O 2 production has been constrained by the lack of effective strategies to enhance catalytic activity. In this study, BiOCl/COF (TFPB-BPY) S-scheme heterojunctions were prepared via a simple in-situ growth method. The heterojunction exploits the nitrogen-rich architecture and charge transport of the COF, combined with the broad light absorption and internal electric field of BiOCl. This synergy enables superior visible light absorption, efficient charge separation, and suppressed recombination. Mechanistic studies confirmed the S-scheme mechanism as the key to its enhanced performance. This work provides a scalable and eco-friendly strategy for improving COF-based photocatalysts through S-scheme heterojunctions, offering a pathway for sustainable H 2 O 2 production and advancing the rational design of photocatalysts for green energy applications.
研究领域:
材料科学
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环境科学
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能源科学
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产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
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2025
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IF 6.9
Shikai Xue,Xin Li,Lin Li,Shan Huang,Jinhua Luo,Haiyan Wang,Qiujun Lu,Guoxing Yin,Fuyou Du
The photocatalytic process is a promising, cost-effective, and environmentally friendly method for remediating environmental pollution. Unfortunately, practical applications have been limited by the shortage of highly efficient photocatalysts. To overcome this problem, a unique cactus-like Bi 12 O 17 Br 2 /Bi 2 O 3 /Bi 25 FeO 40 (BBF) was synthesized facilely by hydrolyzing of rod-like MOF (CAU-17/MIL-100(Fe)) precursor, and the ratio of photocatalyst was adjusted by controlling the hydrolysis time. In this photocatalyst, Bi 12 O 17 Br 2 and Bi 25 FeO 40 were dispersed in Bi 2 O 3 , as well as Bi 12 O 17 Br 2 and Bi 2 O 3 were attached to an S-type heterojunction. The developed BBF demonstrated high photocatalytic efficiency and exceptional stability in degrading five bisphenol pollutants. The photocatalytic degradation of bisphenol A (BPA) using BBF could reach up to 98.7% within 60 min under visible light irradiation. Further characterization demonstrated a significant improvement in the photogenerated charge transfer efficiency and confirmed the S-scheme structure of BBF. Additionally, the possible degradation pathways and the evolution of intermediate toxicity of BPA were discussed according to the intermediates detected in the photocatalytic reaction process.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Journal of Environmental Chemical Engineering
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2024
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IF 7.4
Congcong Wang,Boya Liu,Guorong Wang,Zhiliang Jin
The fabrication of an S-scheme heterojunction represents a highly effective approach for achieving efficient and environmentally friendly artificial photosynthesis. In this study, a highly efficient S-scheme heterojunction was developed by modifying ZnIn 2 S 4 , a kind of chrysanumi-like flower, with a two-dimensional sheet of AgCoO 2 by physical grinding method, which realized H 2 generation and H 2 O 2 generation under visible light conditions. AgCoO 2 exhibits significant potential as a cocatalyst owing to its narrow band gap, black appearance, and robust stability. Because of the difference in Fermi levels, the two-dimensional AgCoO 2 and three-dimensional ZnIn 2 S 4 are closely fitted to accelerate the charge migration between the interfaces, thus improving the photocatalytic properties of the materials. In-depth investigations utilizing in situ X-ray photoelectron spectroscopy alongside additional experimental methodologies have definitively illuminated the intricate charge partition and migration dynamics operative within the S-scheme heterojunction interface between the two catalysts. Photochemistry and photoluminescence spectroscopy further confirmed that the formation of heterojunction accelerated the migration of photogenerated charge carriers, and electron spin resonance provided further evidence for the active substances in the reaction. This study has made additional advancements in the development of efficient S-scheme heterojunction materials for driving photocatalytic water cleavage.
研究领域:
材料科学
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环境科学
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光化学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Jiamin Li,Changheng Chen,Jiangwen Bai,Yuehui Jin,Chongfeng Guo
Although self-polarized piezoelectric semiconductor photocatalysts significantly enhance the separation of internally generated photocarriers, their photocatalytic performance is constrained by insufficient internal polarisation and a wide bandgap. Additionally, the low concentration of oxygen in contaminated water limits the effectiveness of such photocatalysts. To the best of our knowledge, this study was the first to determine that the piezoelectric properties of Bi 2 MoO 6 (BMO), was due to the polarisation displacement of the MoO 6 octahedron that occurred along the x -axis, as revealed through density functional theory (DFT) calculations. Subsequently, the self-polarisation characteristics of BMO were enhanced and the bandgap was reduced through Fe 3+ doping, as confirmed via atomic force microscopy, hysteresis loop measurements and DFT analysis, resulting in an increase in surface potential from 30.41 to 46.80 mV. Furthermore, an S-scheme WO 3 /Bi 2 MoO 6 :Fe 3+ heterojunction was developed to improve the surface separation of photoelectron–hole pairs. The piezoelectric photocatalytic performance of this sample was evaluated through the degradation of rhodamine B (RhB) and oxygen generation. Results indicated that the degradation rate of RhB reached 98.63 % within 25 min under the synergistic influence of light and ultrasound, which was 1.85 and 9.60 times higher than those of Bi 2 MoO 6 and WO 3 , respectively. Furthermore, the optimal oxygen production efficiency was 167.41 µmol·g −1 ·h −1 . This study provides a novel approach for designing more efficient piezoelectric photocatalysts.
研究领域:
材料科学
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环境科学
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理论计算
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DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Hui-Min Zhao,Wei-Peng Jia,Rui Dang,Xiang-Rong Ma,Yang Ma,Shuang-Yu Li,Xin Han,Nai-Cai Xu,Yu-Hong Kang,Yong Gao,Hua-Rui Hao,Rui Bai,Zhi-Fang Zhang,Cui-Ying Lu
s The development of a new type of photocatalyst for multiple deep degradation of phenol in wastewater together with the elucidation of the method for this process are highly significant in the treatment of sewage. In this report, three-dimensional heterostructured La(OH)CO 3 /NiAl-LDHs composite catalysts were prepared by loading ultrathin NiAl-LDHs onto La(OH)CO 3 substrates using a hydrothermal synthesis method and an in-situ growth technique. Photocatalytic experimental studies showed that La(OH)CO 3 /NiAl-LDHs could remove up to 97 % of (degrade) phenol from water, which was 5.86 and nearly two-fold greater than pure NiAl-LDHs and La(OH)CO 3 . Even after 5 cycles, La(OH)CO 3 /NiAl-LDHs still sustains an excellent photocatalytic stability (93.6 % phenol degradation). Fabrication of ultrathin NiAl-LDHs greatly enhanced the surface expanse of the composites from 1.442 m 2 /g to 140.16 m 2 /g, exposing more active sites. According to the in-situ XPS analysis under irradiation and the capture of active species on La(OH)CO 3 /NiAl-LDHs, the electrons would be transferred from La(OH)CO 3 to ultrathin NiAl-LDHs. The S-type heterointerfaces formed at the La(OH)CO 3 substrate with ultrathin NiAl-LDHs nanosheets effectively inhibited carrier complexation and improved the catalytic performance. Meanwhile, the formation of oxygen vacancies between La(OH)CO 3 and NiAl-LDHs further enhanced the photocatalytic activity. The photocatalytic degradation mechanism of phenol showed that the main radicals of this catalytic reaction were •O 2 - and •OH. The three-dimensional stratified staging engaged with La(OH)CO 3 and the ultrathin NiAl-LDHs mixed nanosheet faces offered a new path to advance superlative catalysts to treat sewage.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
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2024
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IF 4.7
Huiming Zhang,He Bian,Fang Wang,Yaping Li,Lijun Zhu,Daohong Xia
Photocatalytic CO 2 reduction is a practical solution to the energy dilemma and environmental damage caused by greenhouse gases, and it is very important to explore high-efficiency photocatalysts. In this study, a novel Bi 2 WO 6 /C 3 N 5 step(S)-scheme heterojunction was successfully constructed and applied for CO 2 photoreduction. The 2D/2D structure showed excellent photocatalytic properties, with methane production reaching 1.976 μmol·g −1 ·h −1 and selectivity reaching 100 % under 5 hours of visible light irradiation. The result indicates that combining Bi 2 WO 6 and C 3 N 5 can promote interfacial charge separation and maintain the optimal reducing ability of photogenerated electrons. Based on experimental and theoretical calculations, we characterized the reaction mechanism and heterojunction formation mechanism. This study offers a novel approach to improve the selectivity and photocatalytic efficiency of CO 2 reduction products.
研究领域:
材料科学
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环境科学
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能源科学
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产品关联
DOI
高影响因子
Materials Advances
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2022
·Vol. 3
·期 20
·7546-7558
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IF 0
Hecheng Ma,Jianjun Liu,Yimeng Wang,Shengli Zuo,Yingchun Yu,Baoshan Li
Photocatalytic degradation has been developed as a promising strategy for environmental remediation. Black phosphorus (BP) has attracted much attention in the field of photocatalysis due to the adjustable bandgap and high carrier mobility. In this work, we constructed a flower-like BP nanosheet/P-doped BiOCl (BP/P-BiOCl) S-scheme heterostructure via a simple co-precipitation method. The physicochemical properties such as the crystallinity, morphology, chemical environment, and optical and electronic properties of the as-fabricated materials were analyzed by using different analytical techniques. SEM data indicated the successful formation of a flower-like structure of BP/P-BiOCl composites. X-Ray photoelectron spectroscopy data indicated the formation of P-doped BiOCl. X-Ray diffraction and high resolution-TEM data revealed the formation of a hierarchical BP/P-BiOCl heterostructure. The catalytic activity of the as-synthesized samples (15%-BP/P-BiOCl) was tested towards RhB degradation (96% of 20 ppm RhB solution) and Cr(VI) reduction (90% of 20 ppm Cr(VI) solution) under solar light illumination. We demonstrated the formation mechanism of a flower-like structure in which positively charged BPNs assembled with negatively charged P-BiOCl by electrostatic attraction. Furthermore, we revealed the S-scheme photocatalytic mechanism to prove the enhanced photocatalytic activity of BP/P-BiOCl composites. The photodegradation of phenol, radical species trapping experiments and charge transfer route test were performed to prove the formation of the S-scheme. This work provides a facile route for the construction of a flower-like S-scheme heterostructure photocatalyst for efficient solar light photocatalytic performance.
研究领域:
材料科学
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环境科学
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产品关联
DOI
APPLIED CATALYSIS B-ENVIRONMENTAL
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2022
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IF 24.319
Weijie Yang,Kailong Sun,Jun Wan,Yang-Ai Ma,Jiaqing Liu,Bicheng Zhu,Lin Liu,Feng Fu
The insufficient generation of oxidative active species severely limits the activity of photocatalytic aerobic oxidation for organic pollutants degradation in wastewater. Herein, transition metal phosphides (TMPs) cocatalysts, including Ni 2 P, Co 2 P, and NiCoP, were loaded on Bi 4 O 5 Br 2 nanosheets by a simple liquid assembly method. Among which, 15% NiCoP/Bi 4 O 5 Br 2 heterojunction exhibits the optimal photocatalytic activity for degrading phenolic pollutants owing to the high concentration of h + and •O 2 − active species, and it displays excellent tolerance for the inorganic ions, pH value, water matrix, and outdoor sunlight. The S-scheme charge transfer mechanism was revealed for NiCoP/Bi 4 O 5 Br 2 heterojunction, which significantly improves the separation efficiency of photogenerated charge carriers and facilitates the accumulation of active h + . Furthermore, NiCoP with high reduction potential and outstanding O 2 activation ability is served as the active site for producing •O 2 − . This work can inspire the further design of bifunctional photocatalysts for efficient photocatalytic aerobic oxidation applications.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
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IF 6.7
Shengwang Chen,Xiaoli Sheng,Yanyun Wang,Pingping Yu,Chenghan Yang,Xian Zhang,Hao Fang,Yiwei Zhang,Yuming Zhou
Nitrogen-rich C 3 N 5 has emerged as a promising visible light catalyst due to its narrow band gap. Nevertheless, its practical application is hindered by the rapid recombination of photogenerated carriers. To address this limitation and enhance the photocatalytic performance of C 3 N 5 -based photocatalysts, one effective measure involves the construction of heterojunctions in conjunction with other semiconductors. In this work, the C 3 N 5 /TiO 2 S-scheme photocatalysts was constructed by matching C 3 N 5 with a more negative conduction band (CB) and TiO 2 with a more positive valence band (VB). Photoelectric tests exhibited that the prepared photocatalysts possessed enhanced visible light photoresponsivity as well as excellent charge separation and transport efficiencies. The characterization results of XPS and EPR confirmed that the existence of internal electric field and the unique S-scheme charge transfer mechanism, which achieves overall spatial separation of effective photogenerated carriers and accelerates the recombination of redundant electrons and holes. The photocatalytic hydrogen production performance of the TCN2 is 6.9 times and 30 times higher than that of C 3 N 5 and TiO 2 , respectively, which is ascribed to the unique charge transfer mechanism of the S-scheme heterojunction and significantly enhanced photocatalytic activity. The simple construction of S-scheme heterojunctions in this work provides a new strategy for research in other fields.
研究领域:
材料科学
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环境科学
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能源科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）