JOURNAL OF POWER SOURCES
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2025
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IF 7.9
Changqing Liu,Yufei Chen,Tao Wang,Ying Wang,Conghui Liu,Xingang Kong,Jianfeng Huang,Ling Guo,Lixiong Yin
To tackle the pressing dual challenges of the energy crisis and environmental pollution , it is urgent to develop low-cost, high-activity photocatalysts for solar-driven hydrogen production. In this work, a Zn x Cd 1-x S/protonated g-C 3 N 4 S-scheme heterojunction photocatalyst is successfully constructed using an electrostatic interaction-driven assembly strategy. The optimized composite photocatalyst exhibits a hydrogen evolution rate of 17.64 mmol g −1 h −1 , which is approximately 4.14 times and 28.45 times higher than that of pure Zn x Cd 1-x S and protonated g-C 3 N 4 . The apparent quantum efficiency (AQE) of ZCSCN-20 reaches 12.3 % at 420 nm. The electrostatic interaction drives the assembly of the heterojunction, leading to an intimate interfacial contact. This close connection, in turn, significantly shortens the migration distance and transfer time of photogenerated charges. The established S-scheme charge transfer pathway enables the efficient separation of photogenerated charge carriers while preserving the strong redox capability inherent in the constituent semiconductors. Furthermore, the use of sacrificial agents to deplete photogenerated holes further suppresses charge carrier recombination, synergistically enhancing the overall catalytic activity. This work provides an efficient strategy for preparing and optimizing sulfide-based S-scheme heterojunction photocatalysts, laying a foundation for developing stable, high-performance solar-driven hydrogen production systems.
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Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Feihu Zhang,Xinyan Xiao,Yu Xiao,Xia Cheng
Dye effluent is a serious threat to water ecosystem and human health, so it is urgent to develop high-efficient and stable semiconductor photocatalysts to solve the water pollution problem. A novel AgI/CAU-17 composite with 0D/2D hierarchical heterostructure was first constructed by growing AgI particles on CAU-17 nanorods via a mild deposition-precipitation procedure. The optimal 50% AgI/CAU-17 composite displayed the greatest photodegradation rate of 96.7% for RhB , 81.3% for TC and 50.3% for MO, under the simulated solar-light illumination for 70 min. The corresponding apparent rate constants were 0.04401, 0.02227 and 0.01104 min −1 , which were 23.79, 15.25 and 19.73-times higher than those of CAU-17, and 4.94, 1.79 and 6.29-times higher than those of AgI. The improved photodegradation performance could be owing to the following causes: 1) The 0D/2D hierarchical heterostructure endowed AgI/CAU-17 composite with tight interfacial contact, which could supply sufficient channels for the migration of photoinduced carriers; 2) The type II charge migrate pathway facilitated the segregation and migration of photoexcited carriers; 3) The AgI/CAU-17 heterostructures reinforced the light absorption capacity and augmented the specific surface area. In addition, various photocatalytic conditions were researched to imitate the degradation process of RhB in the real aqueous system. The radical capture experiments and EPR test attested that h + and •O 2 - played an important part in the photodegradation of RhB. This study illustrated the tremendous application potential of AgI/CAU-17 heterojunctions in water purification and provided a simple and reliable idea for the preparation of Bi-MOFs composite photocatalysts.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
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IF 9.965
Lijun Wu,Song Zheng,Heng Lin,Shun Zhou,Ahmed Mahmoud Idris,Jin Wang,Sheng Li,Zhengquan Li
All-inorganic lead-free halide double perovskites have emerged as rising star photocatalysts to substitute the toxic lead-based hailed perovskites (LHPs) owing to their unique photophysical properties. Nevertheless, their photocatalytic activities toward CO 2 reduction are still far from comparable with the LHPs, associated with severe charge recombination and sluggish surface catalytic reaction . Herein, a delicate 0D/2D heterojunction of Cs 2 AgBiBr 6 /Bi 2 WO 6 (CABB/BWO) was assembled by in-situ growing cubic CABB nanocrystals on the flat surface of BWO nanosheets via a facile hot-injection method. Density functional theory (DFT) calculations disclose that the work function and Fermi level difference between CABB and BWO give rise to charge redistribution at the interface upon the formation of the heterojunction, creating an internal electric field (IEF). Upon light irradiation , the IEF enables the photogenerated electron transfer from BWO to CABB via direct Z-scheme electron transfer mode with striking spatial charge separation as verified by in-situ X-ray photoelectron (XPS) and electron spin resonance (ESR) spectra. Consequently, the CABB/BWO heterojunction realizes 7-fold higher photocatalytic activity than pristine CABB with significant electron consumption rate of 87.66 µmol g -1 h −1 under simulated solar light (AM 1.5G).
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Xinxin Yuan,Jieyi Yang,Yiyang Yao,Hui Shen,Yue Meng,Bo Xie,Zheming Ni,Shengjie Xia
Single-phase photocatalysts exhibit low performance of photocatalytic degradation of pollutants, which is mainly due to the fact that most intrinsic photocatalysts can only produce one active species for degradation reactions. In order to solve this problem, the 0D/2D Cu 2 O/BiOCl S-scheme heterojunction was successfully constructed through a facile hydrothermal route. The obtained 0D/2D Cu 2 O/BiOCl displays high catalytic activity for tetracycline (TC) photodegradation, and 90.3% of TC was photodegraded within 80 min, which is much better than that by pure Cu 2 O and BiOCl. The excellent photocatalytic activity can be ascribed to the formation of S-scheme heterostructures, which enables the photocatalyst to generate superoxide radicals and hydroxyl radicals, and at the same time, makes the oxidation potential more positive and the reduction potential more negative. It is further proved by the results of experimental characterization and theoretical calculation show that the built-in electric field between Cu 2 O and BiOCl is a key factor in inducing the path of S-scheme electron transmission. In addition, the effects of various reaction conditions, including catalyst dosage, pH value and reaction temperature, on the photodegradation of tetracycline were discussed in detail. The intermediates and degradation path were also discussed in detail by liquid chromatography-mass spectrometry.
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WATER RESEARCH
·
2023
·
IF 12.8
Yi-Lin Liu,Chao Zhang,Lulin Guo,Qingming Zeng,Rongzhong Wang,Haodong Chen,Qingyan Zhang,Qingyi Zeng
Proper disposal of uranium-containing waste is of utmost importance for safeguarding the environment and human health. In this study, we proposed a novel zero-dimensional (0D)/two-dimensional (2D) nanocomposite material, nZVC/Ti 3 C 2 , composed of nano zero-valent copper (nZVC) nanoparticles loaded onto Ti 3 C 2 MXene nanoflakes, which was prepared using a simple in situ chemical reduction method. The uniform dispersion of 0D nZVC nanoparticles, with a size of approximately 5 nm, onto the 2D ultrathin Ti 3 C 2 MXene effectively prevented agglomeration and corrosion of nZVC. This unique configuration provided numerous adsorption sites for UO 2 2+ and facilitated a fascinating charge channel for reducing adsorbed UO 2 2+ into low-mobilized UO 2 by nZVC. Under the synergistic effect of Ti 3 C 2 MXene and nZVC, remarkable efficiency and selectivity of nZVC/Ti 3 C 2 for U (VI) removal were demonstrated, which exhibited an exceptional adsorption capacity of up to 360 mg/g, coupled with a high removal efficiency of 97.5 % and rapid kinetics. Importantly, the presence of humic acid did not significantly affect the U (VI) removal efficiency of the composite because of the reduction effect of nZVC. The underlying mechanism of U (VI) removal was elucidated, revealing the involvement of reductive immobilization in the form of UO 2 (as high as 73.6 %), inner-sphere surface complexation, and hydrolytic precipitation. This mechanism was dependent on the availability of active nZVC and the solution's pH. These findings highlight the potential of nZVC/Ti 3 C 2 composites as efficient decontaminants for radioactive wastewater , thus contributing to advancements in environmental remediation endeavors.
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CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Ke Zhang,Danqing Li,Qingyun Tian,Hongyang Cao,Farid Orudzhev,Irina A. Zvereva,Jingkun Xu,Chuanyi Wang
Practical application of photocatalysis is often challenged by some intrinsic issues such as recombination of photogenerated charge carriers, stability and separation, etc. Herein, bismuth decorated 0D/2D ZnFe 2 O 4 /Bi 5 FeTi 3 O 15 (Bi/ZF/BFT) step-scheme (S-scheme) heterojunction was fabricated by an in-situ method. Due to the advantages of structure and composition, the Bi/ZF/BFT with the desired proportion (Bi/ZF/BFT-35) exhibits favorable photocatalytic performance towards tetracycline (TC) degradation. Compared with the pure ZF, the nanohybrid shows superior stability after 5 times cycle tests. Moreover, Bi/ZF/BFT-35 is convenient to be separated from the reaction system due to its magnetic nature. As identified by ESR measurement, •O 2 − and •OH radicals were involved in the photodegradation of TC, which supports that the S-scheme is successfully prepared. Also, the Bi/ZF/BFT-35 shows great ability of chemical oxygen demand (COD) removal in the practical wastewater as well. Importantly, antibacterial activity against E. coli test indicates that photodegraded TC has lower biotoxicity. The present work demonstrates that cocatalyst Bi modified ZF/BFT S-scheme can not only significantly improve its stability with good recyclability from the reaction system, but also inhibits the recombination of charge carriers, giving insight on the strategy of fabricating a promising photocatalyst for practical wastewater treatment.
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Applied Materials Today
·
2020
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IF 8.352
Hui Qiao,Zhongjun Li,Zongyu Huang,Xiaohui Ren,Jianlong Kang,Meng Qiu,Yundan Liu,Xiang Qi,Jianxin Zhong,Han Zhang
Abstact Two-dimensional (2D) materials exhibit outstanding performance and good application prospects in the field of photodetectors due to their excellent optical and electronic properties. However, weak light absorption capacity the rapid recombination of photogenerated electron-hole pairs is still a serious obstacle that limits their light detection performance. Black phosphorus (BP) can act as a hole acceptor due to its excellent hole mobility, which can induce the rapid transfer of photogenerated holes, and the heterojunction at the interface promotes the injection of photogenerated electrons onto the surface of MoS 2 , thereby effectively promoting the separation of photogenerated electron-hole pairs. In addition, recent reports indicate that quantum dots (QDs) have excellent local photon capture capabilities due to their quantum confinement and surface effects, which are considered to be excellent light absorbers that enhance the performance of photodetectors in 2D materials. Here, we prepared black phosphorus QDs-molybdenum disulfide (BP QDs-MoS 2 ) heterojunction and constructed a photo-electrochemical-type (PEC-type) photodetector based on the heterojunction. Experimental results show that the BP QDs-MoS 2 heterojunction-based PEC-type photodetector exhibits significantly enhanced photo-response performance. Meanwhile, the PEC-type photodetector also exhibits self-powered photo-response behavior, good photoresponse performance and stability in a liquid environmentand. This work strongly proves that BP QDs are used as hole acceptors to promote the separation of photogenerated electron-hole pairs is an effective means.
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APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Qihuang Deng,Furong Zhou,Maolin Bo,Yefeng Feng,Yuehao Huang,Cheng Peng
High dielectric response and electric insulation are desired in high-energy-density polymer/ceramic composites. Low dielectric response is found in polymer composites with semiconductors. To balance a high dielectric constant and breakdown strength, in this work, the polymer-based composites with de novo synthesized V 2 C MXene-CuO hybrid-particles were fabricated. High dielectric response of composites was attributed to strong electron polarization at ceramic/ceramic heterojunction. High insulation was ascribed to fluorine-induced electron-trap effect. The first principle calculations verified the electron-transfer mechanism at V 2 C/CuO van der Waals heterojunctions. Compared with polymer/CuO binary composites, polymer/V 2 C-CuO ternary composites exhibited the improved comprehensive electric properties (remarkably improved dielectric response and slightly damaged insulation). Ternary composite with 10 wt% V 2 C-CuO showed a high dielectric constant of 89, low dielectric loss of 0.23, low conductivity of 6.8 × 10 −7 S m −1 at 100 Hz and high breakdown strength of 204 MV m −1 . This study might enable a facile preparation of cutting-edge nanocomposite dielectrics.
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Catalysis Science & Technology
·
2025
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IF 4.2
Guoyu Xu,Yanan Chen,Peiling Lin,Zizhong Zhang,Tao Ji,Wenyue Su
Employing photocatalytic technology to transform CO2 into valuable fuels is considered a promising solution for addressing the exacerbated greenhouse effect and energy crisis. The development of photocatalysts featuring superior charge separation efficiency is pivotal for the widespread implementation of photocatalytic CO2 reduction technologies. Herein, zero-dimensional (0D) NixP nanoparticles are anchored onto two-dimensional (2D) LaTiO2N nanosheets by a photo-deposition method, and a NixP/LaTiO2N Schottky junction composite with excellent photocatalytic CO2 reduction performance is constructed. The optimal NixP/LaTiO2N composite achieves CO and CH4 yields of 9.39 and 4.15 μmol g−1 h−1, respectively, with the utilized photoelectron number (UPN) reaching 51.98 μmol g−1, which is approximately 9.7 times higher than that of LaTiO2N alone. The improved photocatalytic performance of the composites can be attributed to the formation of Schottky junctions, which effectively suppress the recombination of photogenerated carriers. This study provides a new idea for the development of 0D/2D Schottky junction photocatalysts.
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INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Xuan Miao,Xiao Bai,Peng Zhang,Bolong Wang,Shuyan Wang,Yuzhu Yang,Zenggang Lin,Sixia Li,Binbin Wang,Weisheng Liu
Incorporating two-phase heterojunctions with matching band structures represents a promising strategy for developing photocatalysts with enhanced efficiency. This work prefers a novel approach that employs a template-assisted strategy based on a porous structured UCCN@CeO2 0D/2D S-scheme heterojunction. The proposed method aims to improve photocatalytic activity by harnessing the synergistic effects of monodispersed CeO2 nanoparticles and ultrathin N-defect CN nanosheets. The catalyst demonstrates a remarkable photocatalytic hydrogen evolution rate, reaching an impressive value of 5.59 mmol h–1 g–1 when subjected to simulated sunlight irradiation. Furthermore, the photocatalyst maintains a substantial activity level, yielding 2.35 mmol h–1 g–1 under visible light (≥400 nm). The significant improvement in the photocatalytic performance of the UCCN@CeO2 catalyst is attributed to the unique structural design and effective charge separation facilitated by the S-scheme mechanism. Kelvin probe force microscopy, theoretical calculations, and femtosecond transient absorption spectroscopy affirm the efficient charge transportation across the catalyst interface. Additionally, electron spin resonance spectroscopy measurements further support the charge transfer pathway in the S-scheme. This research presents an innovative approach for designing and developing CN-based catalysts featuring S-scheme heterojunctions, aiming to improve their efficiency and practical use in photocatalytic applications.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 31
·2342
·
IF 3.2
Ye Xingke,Yan Ning,Fuyao Huimei,Deng Qi,Sun Congcong,Qin Renchi,Ma Shihan,Li Yuxing,Yao Zhuheng,Qi Qing,Meng Fanbin
Developing multifunctional materials with integrated microwave absorption and corrosion resistance is crucial for expanding the practical application scope of functional materials in complex marine environments. In this work, a series of multiscale zero-dimensional/two-dimensional (0D/2D) heterostructure composites (denoted as MG@E) were successfully fabricated via a facile in-situ hydrothermal method. In this structural design, zero-dimensional europium-based metal–organic framework (EuMOF) microspheres are uniformly anchored on two-dimensional modified reduced graphene oxide (M/rGO) nanosheets, which effectively optimizes the impedance matching characteristic and improves the electromagnetic wave attenuation capacity of the composites. The excellent microwave absorption performance of MG@E composites originates from the synergistic effects of multiple loss mechanisms, including interfacial polarization at 0D/2D heterointerfaces, dipole polarization of MOF ligands, conductive loss, and magnetic dissipation. The optimized MG@E3 sample delivers a minimum reflection loss (RL) of −54.02 dB at a matching thickness of 2.1 mm, and a maximum effective absorption bandwidth (EAB) of 4.5 GHz at a thin thickness of 1.4 mm. Furthermore, the electrochemical test results demonstrate that MG@E composite coatings can significantly improve the corrosion resistance of Q235 steel. Specifically, the MG@E2 sample achieves a corrosion protection efficiency of 94.8% even after 21 days of immersion in 3.5 wt% NaCl solution. The improved anti-corrosion performance is mainly attributed to the synergistic barrier effect derived from the 0D EuMOF microspheres embedded in the 2D labyrinth-like structure of M/rGO, which inhibits the penetration of corrosive media. It is worth noting that the comprehensive performance of the composites is still restricted by material dosage and preparation conditions to a certain extent. This work provides a feasible and referential strategy for the rational design and preparation of high-performance microwave absorption materials with improved marine environmental adaptability and long-term service potential.
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OPTICAL MATERIALS
·
2021
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IF 3.08
Nan Qing Yang,Jin Li
To improve the photocatalytic degradation efficiency of ZnO and ZnIn 2 S 4 for organic pollutants, ZnO/ZnIn 2 S 4 0D/2D composite heterojunction materials were constructed using 0D ZnO nanoparticles and 2D layered ZnIn 2 S 4 . ZnO nanoparticles were fixed on the surface of 2D ZnIn 2 S 4 to form type-II heterojunctions, which provided abundant active sites and presented low ionization energy, good visible light adsorption, and low electron–hole recombination rates. The fabricated ZnO/ZnIn 2 S 4 composites presented an excellent performance in photocatalytic experiments. The photocatalytic first-order kinetic coefficient of the 10% ZnO/ZnIn 2 S 4 composite with a ZnO loading of 10 wt% was 4.9 times higher than that of ZnO nanoparticles. Therefore, constructing 0D/2D heterojunctions is an effective method for improving the degradation efficiency of ZnIn 2 S 4 toward organic pollutants.
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