APPLIED SURFACE SCIENCE
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2024
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IF 6.3
Jing Xu,Qian Li,Zezhong Li,Zhenlu Liu,Yan Shang
The Mn 0.2 Cd 0.8 S/CeO 2 heterojunction is synthesized by means of hydrothermal coupling. Short rod-like Mn 0.2 Cd 0.8 S is wrapped in leaf like CeO 2 to construct a tight heterointerface, which stimulated the photocatalytic activity to the great extent. Due to the remarkable catalytic and electrochemical properties of Mn 0.2 Cd 0.8 S, the CeO 2 surface active site is driven. CeO 2 has excellent specific surface area, suitable pore volume aperture and Mn 0.2 Cd 0.8 S match to optimize the internal interface charge transfer path. At the same time, the heterointerface can coordinate the interface electron flow and promote the H 2 reduction ability. The results show that the optimal hydrogen production of Mn 0.2 Cd 0.8 S/CeO 2 with S-type heterostructure is 291.8 μmol, and the internal lattice and surface morphology of Mn 0.2 Cd 0.8 S/CeO 2 are not easily damaged due to good catalytic stability. The photocatalytic mechanism of Mn 0.2 Cd 0.8 S/CeO 2 is studied by finding the short distance interfacial charge transfer path and enriching the photogenerated electrons required for hydrogen evolution.
研究领域:
材料科学
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能源科学
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化学
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DOI
高影响因子
ACS Applied Energy Materials
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2024
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IF 5.4
Yi-Fu Huang,Mao-Jin Ran,Zhi-Rong Li,Man-Man Yuan,Ting-Ting Shen,Kai Liu,Ze-Yu Jiang,Shokir Khojiev,Zhi-Yi Hu,Jing Liu,Li-Hua Chen,Yu Li,Bao-Lian Su
The conversion of solar energy into hydrogen (H2) through photocatalysis technology has been considered to be one of the most promising ways to alleviate the energy crisis. However, achieving efficient H2 production is still a big challenge due to the rapid recombination of photogenerated carriers. In this work, we direct Mn0.2Cd0.8S/Co3O4 np junctions via in situ growing p-type Co3O4 nanoparticles on the surface of n-type Mn0.2Cd0.8S nanorods for photocatalytic hydrogen production. Compared to ex-situ-grown samples, the in-situ-grown samples construct many more channels for photogenerated charge carrier transfer via the np junctions and built-in electric field to promote their separation and migration, leading to enhanced photocatalytic hydrogen production. The results show that Mn0.2Cd0.8S/Co3O4-20 exhibits a H2 production rate of 26.98 mmol h–1 g–1 under visible light, which is about 2.71 times higher than that of pure Mn0.2Cd0.8S. In addition, the apparent quantum efficiency at 450 nm of Mn0.2Cd0.8S/Co3O4-20 reaches 14.0%. Our work here provides insights into constructing heterojunctions to facilitate photogenerated charge separation and transfer for photocatalysis and photovoltaic applications.
研究领域:
材料科学
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能源科学
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光化学
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DOI
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
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2025
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IF 3.5
Zheng Nan,Gou Jialin,Lan Meng,Dong Xiaoli,Liu Yujun,Du Jinpeng
Photocatalytic technology has received widespread attention as an effective means of treating organic pollutants in wastewater, but the development of effective and sustainable photocatalysts remains a serious challenge. In this study, a novel Mn 0.2 Cd 0.8 S (MCS)/Bi 4 O 5 Br 2 (BOB) heterojunction photocatalyst was successfully prepared by a two-step solvothermal method. The photocatalytic activity of the MCS/BOB heterojunction photocatalyst for degrading Rhodamine B (RhB) is significantly enhanced relative to Mn 0.2 Cd 0.8 S and Bi 4 O 5 Br 2 . When the molar content of Mn 0.2 Cd 0.8 S was 15% of Bi 4 O 5 Br 2 , the prepared 15% MCS/BOB had the best photocatalytic performance toward RhB with the degradation rate of 91.7% under 60 min of visible light irradiation. The apparent rate constant of 15% MCS/BOB is 10 and 7 times higher than that of Mn 0.2 Cd 0.8 S and Bi 4 O 5 Br 2 , respectively. The excellent photocatalytic performance is associated with the increased specific surface area, extended light absorption range, and proper construction of Z-scheme heterojunction that facilitate effective charge separation and excellent redox capacity. In addition, the heterojunction photocatalyst shows remarkable photocatalytic stability. This study constructs a novel and effective Z-scheme heterojunction photocatalyst and promotes the exploration of photocatalyst in the purification of organic wastewater.
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
Materials Today Chemistry
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2024
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IF 6.7
Jiaru Peng,Tianze Han,Qian Liu,Wenqian Luan,Ruiyang Zhao,Jishu Han,Lei Wang
The development of efficient composite photocatalyst to decompose water and produce hydrogen utilizing solar energy is the important measure to achieve carbon neutrality. Herein, hollow CuCo 2 O 4 double-shell nanospheres were obtained by calcination in air, and then modified with Mn 0.2 Cd 0.8 S in different mass ratios to obtain hollow CuCo 2 O 4 –Mn 0.2 Cd 0.8 S double-shell nanospheres. When the mass ratio of CuCo 2 O 4 and Mn 0.2 Cd 0.8 S was 1:10, the photocatalytic hydrogen production rate reached to 25.17 mmol g −1 h −1 without noble metal cocatalyst. The high photocatalytic performance of CuCo 2 O 4 –Mn 0.2 Cd 0.8 S benefited from the hollow structure of CuCo 2 O 4 and the formation of type-I heterostructure, which increased the utilization rate of visible light, accelerated the electrons transfer and reduced the recombination of electron and hole. Meanwhile, CuCo 2 O 4 nanospheres provided the support for Mn 0.2 Cd 0.8 S and reduced the agglomeration phenomenon of Mn 0.2 Cd 0.8 S, thus exhibiting good photostability. This research provided a new insight for constructing efficient hollow composite photocatalyst.
研究领域:
材料科学
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能源科学
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环境科学
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2018
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IF 11.698
Qun-Zeng Huang,Ze-Juan Tao,Li-Qun Ye,Hong-Chang Yao,Zhong-Jun Li
Development of highly efficient and low-cost noble metal-free co-catalysts for photocatalytic H 2 evolution from water splitting has been aiming at a long-term goal of a renewable hydrogen economy. Herein, a series of novel Mn 0.2 Cd 0.8 S/CoP 3 composites have been successfully prepared through loading CoP 3 nanoparticles on the surface of one dimensional (1D) Mn 0.2 Cd 0.8 S nanowires (NWs) by a facile solvothermal method. Under visible light (λ ≥ 420 nm) irradiation, the as-prepared Mn 0.2 Cd 0.8 S/CoP 3 composite with 2.87 wt% of CoP 3 displayed the highest photocatalytic H 2 evolution activity with a corresponding H 2 evolution rate of 29.53 mmol g −1 h −1 and an apparent quantum yield of 29.2% at 420 nm, which was about 5.02 times higher than that of pure Mn 0.2 Cd 0.8 S and 1.79 times than that of Mn 0.2 Cd 0.8 S/Pt-1.5 wt%. Moreover, the Mn 0.2 Cd 0.8 S/CoP 3 composite exhibited excellent photostability. The superior photocatalytic activity of Mn 0.2 Cd 0.8 S/CoP 3 composite was predominantly attributed to the synergistic effects of highly efficient charge separation efficiency and sufficient active sites for H 2 evolution reaction. This work revealed that low-cost CoP 3 can replace noble metal Pt as a highly efficient co-catalyst for enhancing the photocatalytic activity of semiconductor materials.
研究领域:
材料科学
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能源化学
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2023
·Vol. 47
·期 36
·16972-16980
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IF 3.3
Yan Shang,Jing Xu,Yue Ma,Zezhong Li,Qian Li
The Mn0.2Cd0.8S/NiCo2S4 was prepared using an electrostatic self-assembly method. It was confirmed by analyses of the crystal structure, morphology, and elemental composition. The photoelectrochemical measurement confirmed that Mn0.2Cd0.8S and NiCo2S4 had a close interaction and can form a Schottky barrier. The construction of the Schottky junction speeded up the transport of the photogenerated electrons and inhibited the recombination of the photogenerated electrons and holes. Using Mn0.2Cd0.8S/NiCo2S4, the amount of hydrogen production was higher than with NiCo2S4 and Mn0.2Cd0.8S alone. Different amounts of NiCo2S4 were loaded onto Mn0.2Cd0.8S for the photocatalytic hydrogen production reaction. The hydrogen photocatalytic hydrogen production of Mn0.2Cd0.8S/NiCo2S4-3 was 28.97 times higher than of the Mn0.2Cd0.8S. The Mn0.2Cd0.8S/NiCo2S4 composite exhibited excellent photocatalytic activity and stability, which provided reference values for exploring bimetallic sulfide composite materials, and demonstrated great potential in photocatalytic applications.
研究领域:
材料科学
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光催化
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2019
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IF 4.084
Xiaoming Liu,Binquan Wu,Xueya Chen,Liushui Yan,Huiqin Guo,Kexin Li,Luping Xu,Jun Lin
In this work, a series of Mn x Cd 1-x S solid solutions as efficient photocatalysts for hydrogen evolution with visible light response were synthesized via a co-precipitation method firstly. Then, the hierarchical Bi 2 MoO 6 /Mn 0.2 Cd 0.8 S heterostructured composite was prepared by combining Mn 0.2 Cd 0.8 S composite with Bi 2 MoO 6 nanocrystalline through a hydrothermal process. The optimized Mn 0.2 Cd 0.8 S composite's photocatalytic activity is more than 3 times of pristine CdS and the prepared Bi 2 MoO 6 /Mn 0.2 Cd 0.8 S nanocomposites exhibited a significantly improved photocatalytic activity for hydrogen evolution from water with visible light response comparing with single Mn 0.2 Cd 0.8 S composite. The optimized photocatalytic activity of Bi 2 MoO 6 /Mn 0.2 Cd 0.8 S composite is around 10 times of pristine CdS. The excellent photocatalytic activity of Bi 2 MoO 6 /Mn 0.2 Cd 0.8 S composite might be ascribed to the well-matched energy band structures of the Bi 2 MoO 6 and Mn 0.2 Cd 0.8 S. Furthermore, the heterojunctions in Bi 2 MoO 6 /Mn 0.2 Cd 0.8 S composite might also do some contributions to improve its photocatalytic activities to some extent. A possible photocatalytic mechanism was proposed. Due to its excellent photocatalytic activity and good stability for hydrogen evolution from water, the obtained hierarchical Bi 2 MoO 6 /Mn 0.2 Cd 0.8 S composite has potential application in photocatalytic hydrogen evolution from water by using solar power.
研究领域:
材料科学
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能源科学
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2020
·Vol. 44
·期 32
·13728-13737
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IF 3.288
Jiaqian Lu,Zhe Zhang,Lin Cheng,Hong Liu
Herein, a series of MoS2-wrapped Mn0.2Cd0.8S nanospheres with different MoS2 content were fabricated via a two-step hydrothermal route. The photocatalytic activity of the as-prepared MoS2/Mn0.2Cd0.8S composites for H2 production and reduction of CO2 under visible light irradiation was investigated. The results demonstrated that the ultra-thin MoS2 nanosheets were uniformly wrapped on the surface of cauliflower-like Mn0.2Cd0.8S nanospheres, and an intimate interfacial contact was formed between MoS2 and Mn0.2Cd0.8S. The MoS2/Mn0.2Cd0.8S hybrids exhibited significantly enhanced photocatalytic activity compared with the pristine Mn0.2Cd0.8S. The optimal MoS2 loading content was determined to be 3.0 wt%, giving a H2 production rate of 335.02 μmol h−1 and a CH3OH production rate of 2.13 μmol h−1, which were around 5.1 and 5.4 times that of bare Mn0.2Cd0.8S, respectively. The superior photocatalytic activity was predominantly attributed to the intimate contacts between Mn0.2Cd0.8S and MoS2, which facilitated the transfer and separation of the photoexcited charge carriers. Moreover, the as-synthesized MoS2/Mn0.2Cd0.8S composites also showed excellent stability. This study demonstrates the great potential of MoS2-wrapped Mn0.2Cd0.8S as a noble-metal-free catalyst for photocatalytic energy conversion.
研究领域:
材料科学
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能源化学
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DOI
高影响因子
Surfaces and Interfaces
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2025
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IF 6.3
Ying-Jiao He,Liang-Hong Shu,Yan Xiong,Qun-Zeng Huang
Development of highly-efficient heterostructured photocatalysts capable of fully utilizing full solar spectrum has emerged as a focal point in photocatalytic H 2 evolution from water splitting. Herein, Mn 0.2 Cd 0.8 S/MoSe 2 composite was successfully constructed by attaching full-spectrum responsive MoSe 2 nanospheres on surface of Mn 0.2 Cd 0.8 S polyhedra via in-situ hydrothermal process. The optimal Mn 0.2 Cd 0.8 S/MoSe 2 -5wt% composite photocatalyst yielded the H 2 evolution rate of 34.31 mmol g –1 h –1 under full-spectrum light, significantly surpassing the activities obtained under near-infrared (NIR), ultraviolet (UV), visible (Vis), Vis-NIR and UV-Vis light alone. This outstanding property could be attributed to the synergetic effects of p−n heterojunction and photothermal effect, effectively accelerating interfacial charge transfer, elevating reaction system's temperature and expediting surface reaction, thereby promoting the photocatalytic reaction of Mn 0.2 Cd 0.8 S. This study offers a valuable perspective on utilizing MoSe 2 to construct an efficient photothermal-assisted photocatalysis system.
研究领域:
材料科学
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光催化
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可再生能源
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纳米材料
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氢气制备
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Xuanye Zhao,Lantian Zhang,Qingyang Pang,Youlin Wu,Chaoyue Zheng,Jihuai Wu,Canzhong Lu,Bifen Gao,Yiming Xie
To address the prevalent problems of rapid photogenerated carrier recombination and insufficient redox capacity in photocatalytic hydrogen evolution, this work constructs a ZnWO 4 /Mn 0.2 Cd 0.8 S (ZWO/MCS) heterojunction photocatalyst featuring an S-scheme band structure. The addition of ZnWO₄ (ZWO) significantly boosts the photocatalytic activity of Mn 0.2 Cd 0.8 S (MCS). Under irradiation with simulated visible light, the 20ZWO/MCS composite exhibited the highest hydrogen production rate (30.22 mmol·g −1 ·h −1 ), 44.44 times that of pure ZWO and 4.51 times that of pure MCS, respectively. It also demonstrates excellent catalytic stability during continuous cycling tests. Through a systematic investigation of its structure, optoelectronic properties, and photocatalytic hydrogen evolution performance, combined with density functional theory (DFT) theoretical calculations, it was confirmed that a tight heterointerface forms between ZWO and MCS, establishing an S-scheme interfacial charge transfer route driven by the internal electrical field (IEF). Through the pathway, the photogenerated charges are efficiently separated spatially, with electrons enriched in the conduction band of MCS for proton reduction for hydrogen production, while holes gather within the valence band of ZWO. The study deepens the understanding of the behavior of charge carriers in S-scheme heterojunctions regarding their separation and migration, providing theoretical foundations and material design strategies for developing high-performance photocatalytic systems. Combined with in-situ experimental characterization and DFT theoretical calculations, it has been confirmed that the built-in electric field (IEF) formed by the difference in work function drives the migration of photo generated electrons from ZWO to MCS, following an S-shaped charge transfer path, achieving efficient spatial separation of charge carriers. Download: Download high-res image (431KB) Download: Download full-size image
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2020
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IF 4.939
Xiaoming Liu,Xueya Chen,Luping Xu,Binquan Wu,Xinman Tu,Xubiao Luo,Fang Yang,Jun Lin
A series of non-noble metal ultrathin MoS 2 nanosheets modified Mn 0.2 Cd 0.8 S heterostructured composites were prepared by an ultrasonic assisted hydrothermal synthesis process. Comparing with the pristine Mn 0.2 Cd 0.8 S composite, the obtained ultrathin MoS 2 /Mn 0.2 Cd 0.8 S composites exhibited a significantly improved photocatalytic activity for hydrogen evolution from water with visible light response. The optimized photocatalytic activity toward MoS 2 /Mn 0.2 Cd 0.8 S composite is around 8 times of the pristine Mn 0.2 Cd 0.8 S composite. Moreover, the ultrathin MoS 2 /Mn 0.2 Cd 0.8 S composites displayed good photocatalytic stability in the course of photochemical reaction . The excellent photocatalytic activity of the ultrathin MoS 2 /Mn 0.2 Cd 0.8 S composites might be attributed to the formed heterojunctions in composites itself and the sufficient active edge sites in MoS 2 phase. A possible photocatalytic mechanism was tentatively proposed. Considering its excellent photocatalytic activity and good photochemical stability, the obtained ultrathin MoS 2 /Mn 0.2 Cd 0.8 S composite has potential application in photocatalytic hydrogen evolution from water by using solar energy.
研究领域:
材料科学
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能源化学
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DOI
高影响因子
LANGMUIR
·
2026
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IF 4.4
Xia Zhang,Tongyao Liu,Chen Liang,Jianing Ma,Li Bao,Yun Fang,Zhihao Du,Riming Hu,Piqi Zhao,Xuchuan Jiang,Pengyu Dong
Surface biofouling is a pervasive and intractable challenge that accelerates the corrosion of cement-based marine infrastructures, drastically impairs their structural durability and shortens their service life. Herein, to address these critical issues, an interfacial electric field-driven S-scheme Mn0.2Cd0.8S/ZnIn2S4 (MCS/ZIS) heterojunction was rationally designed and fabricated as a high-performance photocatalytic coating for sustainable surface antibacterial protection. Owing to the Fermi level difference between MCS and ZIS, a robust internal electric field is constructed at the heterojunction interface, which not only boosts the directional charge transfer across the interface but also effectively suppresses the recombination of photogenerated electron–hole pairs. More importantly, the unique S-scheme charge transfer pathway enables the selective retention of highly reductive electrons in the conduction band of MCS and strongly oxidative holes in the valence band of ZIS, which synergistically facilitates the efficient two-electron oxygen reduction reaction for in situ hydrogen peroxide (H2O2) generation. The optimized MCS/ZIS composite achieves a remarkable H2O2 production rate of 899.7 μmol·g–1·h–1 under simulated sunlight irradiation, which is 2.1 times higher than that of pristine MCS. When integrated onto the surface of cement-based materials, the as-prepared MCS/ZIS photocatalytic coating continuously generates H2O2 under light illumination, exhibiting excellent antibacterial activity against Staphylococcus aureus with a minimum inhibitory concentration of 20.33 μg·mL–1. This work not only provides a novel photocatalytic antifouling strategy for enhancing the durability of cement-based materials but also offers a feasible design idea for the construction of high-efficiency S-scheme heterojunction photocatalysts for environmental remediation applications.
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PubMed
高影响因子
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