CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Junjie Hao,Ning Li,Jingkai Lin,Chaorui Xue,Qing Chang,Xiangqian Fan,Huinian Zhang,Caihong Hao,Huayang Zhang,Shengliang Hu
Photocatalytic hydrogen production holds promise for solar energy conversion but is limited by inefficient charge separation and sluggish interfacial kinetics. Here, we construct a Pt@carbon nanotubes (CNTs)/ZnIn 2 S 4 (ZIS) heterostructure, where Pt-decorated CNTs intertwine and embed within ZIS microspheres. The CNTs not only guide ZIS nucleation but also serve as conductive channels and spatial confinement scaffolds, forming a well-integrated architecture for efficient carrier transport. This heterostructure operates via a thermo-electronic channel engineering strategy, integrating dual photothermal activation (arising from CNTs lattice vibrations and Pt plasmonic effects) with Schottky junction modulation. The resulting localized heating, in concert with the built-in electric field, synergistically enhances charge separation, facilitates hot electron generation, and accelerates interfacial reaction kinetics. The hierarchical architecture enables a three-dimensional hot-carrier migration pathway, efficiently directing electrons from the interior of ZIS to Pt active sites through CNTs. Consequently, the heterostructure achieves a hydrogen evolution rate of 51.4 mmol g −1 h −1 , 103 times higher than pristine ZIS. This work thus presents a multifunctional design paradigm that integrates efficient light harvesting, interfacial charge regulation, and thermal enhancement, providing a viable route toward highly efficient solar-driven hydrogen production.
研究领域:
材料科学
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纳米技术
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能量转换
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催化
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物理化学
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高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
En-Ze Deng,Yan-Zhong Fan,Hai-Ping Wang,Yuying Li,Chao Peng,Jiewei Liu
Constructing a Z-scheme heterostructure on a metal–organic framework (MOF) composite with an explicit charge transfer mechanism at the interface is considered to be an effective strategy for improving the photocatalytic performance of MOFs. Herein, an internal electric field (IEF)-induced Z-scheme heterostructure on the ZnIn2S4@NH2-MIL-125 composite is designed and fabricated by a facile electrostatic self-assembly process. Systematic investigations reveal that close interfacial contact and difference in work function between NH2-MIL-125 and ZnIn2S4 enable the formation of the IEF, which drives the Z-scheme charge transfer as revealed by the in situ irradiated X-ray photoelectron spectroscopy (ISI-XPS), photoirradiated Kelvin probe force microscope (KPFM) measurement, electron paramagnetic resonance (EPR) radical trapping experiment, as well as density functional theory (DFT) calculation; meanwhile, directions of the interfacial IEFs are determined. Benefiting from the unique merit of IEF-induced Z-scheme charge transfer, the optimized ZnIn2S4@NH2-MIL-125 composite exhibits significantly enhanced photocatalytic activity for the photoreduction of 4-nitroaniline (4-NA) to p-phenylenediamine (PPD) under visible light irradiation. This work not only provides in-depth insights for charge transfer in the IEF-induced Z scheme heterostructure but also affords useful inspirations on designing the Z-scheme MOF composite to boost the photocatalytic performance.
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高影响因子
MOLECULES
·
2026
·Vol. 31
·期 16
·2843
·
IF 5.1
Ligang Ma,Tingting Chen,Jingxuan Zhou,Jiulei Zhao,Xinlan Li,Huilin Jiang,Liping Li,Xiaoqian Ai
Organic pollutants in industrial wastewater present a severe threat to both the environment and human health. Photocatalytic technology, recognized for its eco-friendliness and high efficiency, has become a leading approach for degrading such pollutants. In this work, BiOCl nanosheets were first synthesized using a hydrothermal method. Subsequently, an anion exchange reaction with TAA in an oil bath generated a Bi2S3intermediate layer on the BiOCl surface, followed by the in situ growth of ZIS nanostructures, successfully constructing a BiOCl@Bi2S3@ZIS double Z-scheme heterojunction. By adjusting the amount of BiOCl, the interface contact and dispersion of the heterojunction were optimized. Characterization results demonstrate that the BiOCl@ZIS-25 heterojunction possesses the highest specific surface area (103.5 m2·g−1) and the most efficient charge separation. Under visible light irradiation, it achieved 97.88% degradation of methylene blue within 20 min, with a reaction rate constant 8 and 4 times higher than those of pure BiOCl and ZIS, respectively. Mechanistic investigations indicate that Bi2S3interlayer acts as an electron-transfer bridge between BiOCl and ZIS, establishing a double Z-scheme charge transfer pathway that significantly enhanced the separation and utilization efficiency of photogenerated charge carriers. This study offers valuable insights for designing highly efficient and stable photocatalytic composite materials.
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PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Dongsheng Zhang,Meijiao Wang,Guosong Wei,Renjie Li,Ning Wang,Xiaolong Yang,Zhuo Li,Yan Zhang,Yanhua Peng
Photocatalytic H 2 evolution provides an upcoming route for the production of clean fuel via the conversion of solar energy. TiO 2 , as a potential semiconductor material, is restricted by its faint absorption of visible light, thus limiting its application in water splitting. Herein, high visible light responsive ZnIn 2 S 4 /TiO 2-x nanotube arrays for photocatalytic hydrogen evolution were fabricated by two-step reaction. ZnIn 2 S 4 /TiO 2-x nanotube arrays exhibited the photo response from UV to visible-light region due to the introduction of oxygen vacancies and visible-light driven ZnIn 2 S 4 . Moreover, the heterojunction improved the separation of photogenerated carriers and boosted the electron transfer from ZnIn 2 S 4 to TiO 2-x , thereby increasing the longevity of active electrons, which enhanced the photocatalytic activity for hydrogen evolution. An outstanding H 2 production rate of 581.1 μmol h −1 g −1 was obtained and an apparent quantum yield (AQY) up to ∼ 1.42% was achieved. This work demonstrates that the defect-induced bandgap engineering of semiconductor photocatalysts is a potential way to extend the optical absorption property of TiO 2 to visible light even or NIR and enhance the photocatalytic activity.
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APPLIED SURFACE SCIENCE
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2022
·
IF 7.392
Mei Cai,Bin Du,Anze Shui,Chao He
The photodegradation of pollutants is a significant and friendly technology to protect the environment. The fabrication of hierarchical heterojunction is the efficient method to improve the photocatalytic performance. Herein, the hierarchical type-II BiOBr@ZnIn 2 S 4 heterojunction is fabricated successfully via a simple chemistry method. The optimal sample BS170 (the volume of 170 mL ethylene glycol) exhibits the higher photodegradation under the visible light and presents 2.3 times higher than that of pure BiOBr for degradation of MO and the mass of BS170 is the half of BiOBr could achieve the same photocatalytic effect as BiOBr for the photodegradation of RhB. The results indicate the fabric of heterojunction could enhance the absorption capacity of visible light and separation efficiency of photoinduced electron-hole pairs to increase the photodegradation. Therefore, this work provides the novel strategy for fabricating the hierarchical type-II heterojunction photocatalyst for the degradation of dyes.
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Journal of Materials Chemistry A
·
2022
·Vol. 11
·期 4
·1793-1800
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IF 14.511
Yu Nie,Tingting Bo,Wei Zhou,Huilin Hu,Xiang Huang,Huaiyuan Wang,Xin Tan,Lequan Liu,Jinhua Ye,Tao Yu
How to regulate the energy barrier of *COOH is the rate determining step of the photocatalytic reduction of CO2 to produce gaseous CO. Herein, an appropriate Zn vacancy on ZnIn2S4 was synthesised to achieve the desired photocatalytic CO2 reduction capacity (CO: 5.63 mmol g−1 h−1) and selectivity (CO: 97.9%). Various sulfhydryl groups were selected to regulate the Zn vacancy formation in ZnIn2S4, which directly generated the unsaturated coordination state of the sulfur adjacent to the Zn vacancy accompanied by less electrons when compared to ZnIn2S4 without Zn vacancy. Comprehensive experimental analysis and theoretical calculations demonstrated that the appropriate Zn vacancy tuned the Gibbs free energy of *COOH from the endothermic process to the exothermic process in the process of the photoreduction CO2. This work provided an engineering method for cation vacancies and improvement of the efficiency of photocatalytic CO2 reduction by adjusting the energy barrier of intermediate.
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高影响因子
Journal of Composites Science
·
2023
·Vol. 7
·期 7
·280
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IF 3.3
Ge-Ge Zheng,Xin Lin,Zhen-Xing Wen,Yu-Hao Ding,Rui-Hui Yun,Gaurav Sharma,Amit Kumar,Florian J. Stadler
Photocatalytic degradation plays a crucial role in wastewater treatment, and the key to achieving high efficiency is to develop photocatalytic systems that possess excellent light absorption, carrier separation efficiency, and surface-active sites. Among various photocatalytic systems, S-type heterojunctions have shown remarkable potential for efficient degradation. This work delves into the construction of S-type heterojunctions of ternary indium metal sulfide and bismuth ferrite nanofibers with the introduction of sulfur vacancy defects and morphology modifications to enhance the photocatalytic degradation performance. Through the impregnation method, BiFeO3/ZnIn2S4heterojunction materials were synthesized and optimized. The 30% BiFeO3/ZnIn2S4heterojunction exhibited superior photocatalytic performance with higher sulfur vacancy concentration than ZnIn2S4. The in-situ XPS results demonstrate that the electrons between ZnIn2S4and BFO are transferred via the S-Scheme, and after modification, ZnIn2S4has a more favorable surface morphology for electron transport, and its flower-like structure interacts with the nanofibers of BFO, which has a further enhancement of the reaction efficiency for degrading pollutants. This exceptional material demonstrated a remarkable 99% degradation of Evans blue within 45 min and a significant 68% degradation of ciprofloxacin within 90 min. This work provides a feasible idea for developing photocatalysts to deal with the problem of polluted water resources under practical conditions.
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Science China-Materials
·
2022
·Vol. 66
·期 3
·1053-1061
·
IF 8.64
Wang Junxia,Guo Changliang,Jiang Yong,Wan Jiafeng,Zheng Bing,Li Yuxin,Jiang Baojiang
Hydrogen peroxide is an environment-friendly reactive oxygen species and a significant green oxidant. However, the highly efficient and sustainable production of H 2 O 2 remains a challenge. Herein, we demonstrated a state-of-the-art photocatalytic method for H 2 O 2 production using an optimal tubular graphic carbon nitride (TCN)/ZnIn 2 S 4 (ZIS) heterojunction. Within 3 h, a H 2 O 2 production rate of 2.77 mmol g −1 h −1 was achieved by the TCN/ZIS heterojunction, which is 3.4- and 23.1-fold higher than that obtained by its individual TCN and ZIS components, respectively. Experimental results showed that the excellent photoactivity of TCN/ZIS is mainly due to the formation of heterojunction, which improves the charge separation ability and thereby promotes the proton-coupled electron transfer by initially reducing O 2 to ·O 2 − and subsequently generating H 2 O 2 . This work has developed an efficient and green strategy for H 2 O 2 production with scientific and practical value for environmental remediation.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 32
·期 47
·2208962
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IF 19.924
Chao Cui,Xiaolei Zhao,Xiaowen Su,Ning Xi,Xiaoning Wang,Xiaowen Yu,Xiao Li Zhang,Hong Liu,Yuanhua Sang
The construction of a Z-scheme photocatalytic system is significant in realizing efficient water splitting for hydrogen (H 2 ) evolution. Herein, a novel donor–acceptor covalent organic polymer (COP) is introduced to construct a COP-ZnIn 2 S 4 (ZIS) heterostructure via in situ condensation reaction. The COP-ZIS heterostructure with platinum (Pt) as cocatalyst delivers a high hydrogen evolution rate of 5.04 mmol g −1 h −1 , which is 16 and 3 times higher than ZIS and Pt/ZIS, respectively. The built-in field between the highest occupied molecular orbital of COP and the valence band (VB) of ZIS forms a Z-scheme heterostructure, realizing efficient charge separation. Based on density functional theory calculations, the porphyrin molecule in COP act as electron donor that provides compensating electrons to ZIS. The cocatalyst boosts the utilization of electrons in ZIS. The rate-limiting steps for H 2 evolution with ZIS are overcome by improving charge separation with the Z-scheme heterostructure and speeding up the reaction with cocatalyst. Therefore, the COP-ZIS heterostructure with Pt exhibits optimized H 2 evolution. This study will inspire to construct novel organic and inorganic Z-scheme photocatalysts for efficient green energy production.
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高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 30
·期 8
·20790-20803
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IF 5.19
Huang Hua,Tao Xin,Niu Zhirui,Shan Baoqin,Liu Yu,Ren Jingyu
To improve the photocatalytic performance of Mn 0.6 Zn 0.4 Fe 2 O 4 (MZFO) and ZnIn 2 S 4 (ZIS) for organic pollutants, the p-n MZFO@ZIS heterojunctions with different weight percentage (10 ~ 40%) of MZFO are constructed from spent batteries and added indium ion via a green bioleaching and hydrothermal method. Structural, optical, and photocatalytic properties for the heterojunctions are investigated systematically by XRD, FT-IR, SEM–EDX, TEM, BET, VB-XPS, UV–vis DRS, PL, etc. The results confirm that p–n junction significantly improves the visible light adsorption and the separation efficiency of photogenerated carriers. Specifically, MZFO-25%@ZIS shows the highest photodegradation performance toward Congo red (CR), and its reactive kinetic constant is about 9.6, 7.8, and 7.0 times higher than that of P25 TiO 2 , MZFO, and ZIS, respectively, and MZFO-25%@ZIS still possesses a high reusability and simple magnetic separation after 5 cycles of reuse. The radical trapping experiments and electronic paramagnetic resonance (EPR) tests show that · O 2 − , · OH, and h + are the most important active substance for degrading CR. The pathways for the CR degradation are further proposed based on the intermediate analysis. DFT + U calculations confirm that the high charge density of Zn–O, Fe–O, and Zn–S bonds in the MZFO and ZIS molecules provides the electrons for the sufficient production of free radicals. This work also provides a novel high value-added strategy for the green utilization of spent batteries.
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PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Fangfang Cai,Xia Hu,Faliang Gou,Yuyuan Chen,Yulu Xu,Chenze Qi,De-Kun Ma
Ternary ZnIn 2 S 4 (ZIS) is a kind of potential electrocatalyst for CO 2 reduction reaction (CO 2 RR). However, the reported reduction products are usual C1 species. Considering that N doped carbon can increase adsorption of CO 2 molecules, facilitate electron transfer, and activate active sites, here ultrathin ZIS nanosheet arrays (ZIS NSAs) grown on N doped carbon cloth (NDCC) were synthesized through a facile hydrothermal route. The as-synthesized ZIS NSAs/NDCC enabled electrocatalytic CO 2 RR toward ethanol with the highest 42 % faradaic efficiency (FE) at an applied potential of − 0.7 V versus the reversible hydrogen electrode (RHE) in CO 2 -saturated 0.5 M KHCO 3 aqueous solution. This is first report on ZIS-based electrocatalyst for electrocatalytic CO 2 RR toward ethanol production. The experimental results and density functional theory (DFT) calculations showed that NDCC could enhance the CO 2 RR activity and promote CO-CO coupling process. Our work not only provides a new electrocatalyst for CO 2 RR to ethanol but also stresses the influence of N doped carbon substrate and bimetallic effect on electrocatalytic CO 2 RR.
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高影响因子
Catalysts
·
2022
·Vol. 12
·期 11
·1429
·
IF 4.501
Yali Song,Huan Zhang,Ziyan Li,Long Huang,Junhao Xie,Long Han,Ruoying Zheng,Yuqing Zhang,Hongzhong Zhang
Previous studies have displayed various conclusions about the effect of preparation factors on the photoreduction property of ZnIn2S4. Therefore, it is not easy to figure out the optimal preparation conditions of ZnIn2S4for Cr(VI) photoreduction. To ensure Cr(VI) reduction efficiency, various ZnIn2S4photocatalysts were prepared in different solvents (i.e., water and ethylene glycol) and temperatures (i.e., 120 °C, 150 °C and 180°C). Different characterization methods were used to explain the difference in optical performance and photocatalytic property among the obtained samples. The results show that all the samples exhibit a similar band gap. The reaction solvent and temperature have a great influence on the surface morphology and optical property, leading to the different photocatalytic properties. ZnIn2S4synthesized at 120 °C in the solvothermal condition shows the optimal efficiency on Cr(VI) photoreduction due to the effective utilization of photo-induced carriers. The reasonable analysis and effective conclusion presented may provide the optimal synthesis method of ZnIn2S4to effectively remove Cr(VI) from water environment.Keywords:ZnIn2S4;Cr(VI);solvothermal;hydrothermal;photoreduction
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