MOLECULES
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2026
·Vol. 31
·期 9
·1512
·
IF 5.1
Boyi Ma,Degang Li,Weimin Zhang,Siru Hao
Hydrogen peroxide (H2O2) is widely regarded as a clean and high-value chemical; however, its conventional industrial production remains both energy-intensive and environmentally unsustainable. In this study, sulfur-deficient ZnIn2S4(denoted SDZIS) was developed as an efficient photocatalyst for H2O2generation through oxygen reduction under visible-light irradiation. SDZIS photocatalysts with controllable sulfur-vacancy concentrations were synthesized via a one-step citric-acid-assisted hydrothermal process combined with NaOH etching. The results of transient photocurrent response and electrochemical impedance spectroscopy show that the separation efficiency of charge carriers has been improved. Compared with pristine ZnIn2S4, the optimized SDZIS catalyst achieved a nine-fold enhancement in the H2O2production rate, reaching 2711.81 μmol g−1h−1. Results of experimental and density functional theory calculations suggest that sulfur vacancies can modulate the catalyst work function and the adsorption energy of O2. Comparative experiments indicate that an appropriate concentration of sulfur vacancies can lead to a high H2O2yield. Combined with scavenger tests, DMPO-EPR, and rotating ring disk electrode measurements, these results support a sulfur-vacancy-associated enhancement in charge separation and a tendency toward a superoxide-involved 2e−ORR pathway for H2O2production.
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高影响因子
Small
·
2026
·
IF 11.8
Wuxi Zhang,Jianyu Li,Yangke Cun,Xinmin Bai,Yingzhu Zi,Zan Xu,Jianbei Qiu,Zhaoyu Ma,Junying Zhang,Zhengwen Yang
Most widely-studied semiconductor catalysts have low efficiency in utilizing near-infrared (NIR) light in the solar spectrum, while also facing major issues such as slow charge-carrier migration rate and lack of active sites that limit photocatalytic performance. Here, a new strategy to promote the solar-light driven photocatalytic activity of ZnIn 2 S 4 was proposed by introducing Rh single atom (SAs) into CeO 2 :Yb,Er/ZnIn 2 S 4 with photo-thermo-electric effects. The introduction of Rh SAs into ZnIn 2 S 4 effectively suppresses charge recombination, and improves reaction rate through photo-thermal effect. CeO 2 :Yb, Er converts NIR light into visible light via up-conversion photo-optical processes and generates high-energy electrons via two-photon photo-electronic process, both of which can activate ZnIn 2 S 4 . Large contact area and strong interface electric field between CeO 2 and ZnIn 2 S 4 enhance photo-electric conversion efficiency. The CeO 2 :Yb,Er/Rh-ZnIn 2 S 4 exhibits a hydrogen production rate of up to 99.68 mmol·g −1 ·h −1 at 10°C and 148.06 mmol·g −1 ·h −1 with non-temperature-controlled conditions. Under mild conditions, the photocatalysts can convert glucose into high-value-added chemicals (e.g., arabinose) while simultaneously generating hydrogen. This work provides a new strategy to improve NIR light utilization efficiency and enhance charge-carrier separation capability through photo-thermo-electric effects, promoting the production of green hydrogen and biomass conversion into high-value-added chemicals.
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高影响因子
Small
·
2026
·
IF 11.8
Ning Li,Jinyu Zhang,Jiafeng Ma,Chaorui Xue,Qing Chang,Lei Liu,Xiangqian Fan,Caihong Hao,Shaobin Wang,Shengliang Hu,Wenjie Tian
Efficient photocatalysis requires coordinated regulation of charge transport across both bulk and interfacial regions. Here, we introduce an in situ hydrothermal-solvothermal method that simultaneously creates a defect-induced p-n homojunction in ZnIn 2 S 4 (ZIS) and a type-II heterojunction with hybrid 1T-2H WS 2 , forming antiparallel internal-interfacial built-in electric fields (BIEF) that are confirmed by spectroscopic, electronic, optical, and theoretical analyses. Under the guidance of this dual-field coupling effect, photoexcited carriers undergo more efficient separation, enabling the effective modulation of bulk carrier migration and directing electrons toward sulfur-vacancy (S v ) sites in ZIS for efficient hydrogen evolution. The hybrid 1T-2H phases of WS 2 further enhance light absorption and facilitate rapid charge generation and transfer, reinforcing the dual-BIEF-driven transport pathway. The optimized ZIS/WS 2 photocatalyst achieves a hydrogen evolution rate of 44.97 mmol g −1 h −1 and an apparent quantum efficiency of 24.54% at 400 nm. This work establishes antiparallel dual-BIEF engineering combined with 1T-2H hybrid-phase modulation as a platform for directional charge-dynamic control, offering a pathway toward efficient solar-to-hydrogen conversion.
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Advanced Sustainable Systems
·
2026
·Vol. 10
·期 1
·e01582
·
IF 5.6
Na Lv,Shu Lin,Shu-yuan Liu,Kezhen Qi
In this study, a donor-acceptor (D-A) conjugated design strategy was used to synthesize a novel covalent organic framework (NLCOF, the COF initiated by Na Lv), using 2,5-dimethoxylterephthalaldehyde as the building block via the Kröhnke reaction. Subsequently, ZnIn 2 S 4 quantum dots (ZIS QDs) were physically combined with NLCOF for constructing a ZIS QDs-NLCOF S-scheme heterojunction composite photocatalytic system. This system achieved an H 2 O 2 production rate of 6 417 µmol·g −1 ·h −1 in pure water using the 40ZIS-NLC composite catalyst, which was 4.2 and 26.7 times higher than that of ZIS QDs and NLCOF, respectively. Upon adding 1 mL benzyl alcohol to the system, the H 2 O 2 production rate drastically increased to 53 383 µmol·g −1 ·within 5 h. Advanced characterization techniques, including XPS, KPFM, and EPR were employed to elucidate the intrinsic mechanism of S-scheme heterojunction photocatalytic H 2 O 2 production. This study offers insights into the rational design of high-performance COF-based heterojunction photocatalysts and provides a robust foundation for optimizing interfacial electron-coupling interactions to enhance overall photocatalytic efficiency.
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ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Guanshun Xie,Le Liao,Zhaohui Huang,Jie Wang,Senlin Zhang,Kunjie Wang,Ruoning Zhan,Peng Zhang,Benhua Xu,Xiuqiang Xie,Nan Zhang
In pursuing efficient photocatalytic systems, nature-inspired photocatalysis has emerged as a promising strategy to optimize charge transfer and surface reactions. Inspired by the structure and function of plant leaves, a leaf-like hierarchical heterostructure is constructed. ZnIn 2 S 4 nanosheet arrays are anchored on the integrated Ag nanowires network with Ti 3 C 2 T x MXene support, during which process sulfur vacancies (V S ) are formed due to the anti-strong metal-support interaction. The ZnIn 2 S 4 nanosheet arrays supported by Ti 3 C 2 T x serve as mesophyll to absorb photons and convert solar-to-chemicals, the Ag nanowires embedded in the interface of ZnIn 2 S 4 and Ti 3 C 2 T x function as veins to shuttle the charge carriers for the surface redox reactions, and the V S on ZnIn 2 S 4 resemble stomata to facilitate the adsorption of reactants. Furthermore, the formed V S are able to reduce the thermodynamic barriers in photocatalytic reactions. The synergistic effect of these functional components enables hydrogenation of several nitroaromatic compounds, and exhibits a photocatalytic H 2 evolution rate of 1119.4 µmol g⁻¹ h⁻¹ under visible-light irradiation, which is ≈7.9 times as high as that of pure ZnIn 2 S 4 . This study highlights the pivotal role of functional design inspired by nature in advancing solar-to-chemical conversion and paves the way for the development of next-generation photocatalysts in green chemistry and H 2 energy applications.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Liang Geng,Wenjun Li,Mei Dong,Xiaohui Ma,Ajmal khan,Yanyan Li,Mengchao Li
The separation of photogenerated carriers and the efficient utilization of high-level energy electrons (HLEEs) are the key processes for improving the performance of photocatalysts. Herein, Ce 2 Ti 2 O 7 /ZnIn 2 S 4 (CTOZIS) and Bi 3+ -doped Ce 2 Ti 2 O 7 /ZnIn 2 S 4 (BCTOZIS) photocatalyst were successfully synthesized through hydrothermal method . The photocatalytic hydrogen production of CTOZIS and BCTOZIS was 1233.7 μmol g −1 and 4168.5 μmol g −1 under visible light irradiation (λ ≥ 420 nm) within 5 h, which was 2.3 and 7.6 times than that of pure ZnIn 2 S 4 , respectively. X-ray photoelectron spectroscopy, photoluminescence spectroscopy and electrochemical characterization demonstrated that after Bi 3+ doping, the electron-hole pairs recombination of BCTOZIS was inhibited, which may be ascribed to the establishment of a Z-scheme heterojunction and the presence of oxygen vacancy and Ce 4+ /Ce 3+ redox center. The doping of Bi 3+ resulted in the adjustment of the valence band position of Ce 2 Ti 2 O 7 from 1.98 V to 1.92 V. This adjustment enabled direct transfer of HLEEs generated in Ce 2 Ti 2 O 7 to the conduction band of ZnIn 2 S 4 for hydrogen production with a wavelength below 423 nm. The synergistic effect of conventional Z-scheme electron transfer and the unique utilization of HLEEs boosted the photocatalytic performance of BCTOZIS. This study affords an innovative insight for designing visible-light-driven photocatalysts with high photocatalytic activity .
研究领域:
材料科学
·
能源化学
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Science China-Materials
·
2026
·
IF 7.7
Chen Jiayue,Zhou Zhou,Luo Weili,Yue Yiying
Recent advancements in sustainable bio-sourced functional materials have focused on enhancing the valorization of lignin-derived biopolymers through innovative transformation methodologies. This study highlights breakthroughs in lignin-based Z-scheme heterojunction photocatalytic systems, emphasizing extended spectral responsiveness, optimized interfacial photoexcited carrier separation and reduced energy loss mechanisms. Two photocatalysts, Bi 2 WO 6 (BWO) and ZnIn 2 S 4 (ZIS) were co-engineered via a Z-scheme charge-transfer pathway using coaxial electrospinning and hydrothermal synthesis with lignin-based carbon nanofibers (CNFs), preserving the fibrous skeleton intact. The all-component photocatalytic nanomembrane exhibited superior mechanical strength (Young’s modulus = 20.38 MPa, toughness = 2.48 kJ/m 3 ) under wet conditions along with accelerated stabilization kinetics (1°C/min, representing a 10-fold increase), resulting in significant energy savings. Using methylene blue (MB) as a model pollutant, the CNFs@BWO/ZIS nanomembrane achieved 94.4% degradation efficiency ( k = 0.01664 min −1 ) after 120 min of solar irradiation, while maintaining excellent recyclability through five successive cycles. Furthermore, we elucidated the systematic mechanism of surface charge-carrier migration in the Z-scheme heterojunction and MB decomposition. This photocatalytic system utilizing sustainable biomass functional materials paves the way for wastewater treatment, with the goal of achieving peak carbon emissions and carbon neutrality. The alternative text for this image may have been generated using AI.
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JOURNAL OF ELECTRONIC MATERIALS
·
2022
·Vol. 51
·期 11
·6121-6133
·
IF 2.047
Mou Jiaxin,Xu Yunlan,Zhong Dengjie,Chang Haixing,Xu Chunzi,Wang Hui,Shen Hongyu
In order to enhance the photoelectric conversion efficiency of a photoanode and broaden its light absorption range, a ZnIn 2 S 4 /UiO-66/TiO 2 /Ti composite photoanode was developed. The maximum photocurrent density of the prepared photoanode is 2.56 mA cm −2 at 1.2 V (versus SCE), which is 1.79 times higher than that of ZnIn 2 S 4 /TiO 2 /Ti. The rhodamine B (RhB) removal rate, short-circuit current density and maximum power density of a photocatalytic fuel cell (PFC) constructed with the ZnIn 2 S 4 /UiO-66/TiO 2 /Ti photoanode and a Cu cathode are 98.01%, 0.22 mA cm −2 and 16.97 μW cm −2 respectively. The enhancement of the PFC performance is mainly attributed to the extremely good energy band matching and nano-size interface contact between ZnIn 2 S 4 and UiO-66. The existence of UiO-66 can be as an electronic transmission bridge, which not only facilitates the rapid transfer and utilization of photogenerated electrons, but also improves the adsorption ability of the photoanode for RhB molecules. Graphical Abstract
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NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 6
·3298-3310
·
IF 3.591
Zhi-Yu Liang,Ren-Kun Huang,Ruo-Wen Liang,Dan-Hua Xie,Gui-Yang Yan
Nowadays, visible-light-driven photocatalysts are considered to be prospective candidates for solving the crisis of energy shortage and environment pollution. Herein, with the support of WO3 nanorods (NRs), which possess a fast electron transmission and low carrier diffusion, a series of direct Z-scheme ZnIn2S4/WO3 photocatalysts are exquisitely fabricated by an in situ self-assembly route with ZnIn2S4 (ZIS) and WO3 NRs. Photocatalytic activities towards both selective hydrogenation of aromatic nitro compounds and non-selective oxidation of organic compounds demonstrate that these as-fabricated heterostructured nanocomposites exhibit remarkably enhanced photocatalytic activities owing to the highly efficient separation of photogenerated electrons and holes. Furthermore, the characteristics of electron spin resonance (ESR) spectra clearly suggest that the as-fabricated nanocomposites follow the direct Z-scheme-dominated photoredox catalytic mechanism. Additionally, combining the results of ESR and X-ray photoelectron spectroscopy (XPS), it can be concluded that the photo corrosion of ZnIn2S4 is significantly postponed after integration with WO3 NRs. Finally, we will be greatly pleased if this work could afford a theoretical exemplification and synthetic strategy for rationally designing and utilizing direct Z-scheme photocatalysts.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2020
·
IF 4.939
Hongmei Zhao,Tingting Zhang,Dongyu Shan,Ying Zhu,Ge Gao,Ye Liu,Jing Liu,Meiying Liu,Wansheng You
An intervening barrier for photocatalytic water decomposition and pollutant degradation is the frustratingly quick recombination of e − - h + pairs. Delicate design of heterojunction photocatalysts by coupling the semiconductors at nanoscale with well-matched geometrical and electronic alignments is an effective strategy to ameliorate the charge separation. Here a facile and environment-friendly l -cysteine-assisted hydrothermal process under weakly alkaline conditions is demonstrated for the first time to fabricate ZnIn 2 S 4 /In(OH) 3 hollow microspheres with intimate contact, which are verified by XRD, SEM, (HR)TEM, XPS , N 2 adsorption-desorption, UV–Vis DRS and photoluminescence spectra. ZnIn 2 S 4 /In(OH) 3 heterostructure (L-cys/Zn 2+ = 4, molar ratio) with a band-gap of 2.50 eV, demonstrates the best photocatalytic performance for water reduction and MB degradation under visible light, outperforming its counterparts (In(OH) 3 and ZnIn 2 S 4 ). The excellent activity of ZnIn 2 S 4 /In(OH) 3 heterostructure arises from the intercrossed band-edge positions as well as the unique hollow structure with large surface area and wide pore-size distribution, which are beneficial for the efficient charge migration from bulk to surface as well as at the interface between ZnIn 2 S 4 and In(OH) 3 . This work provides an efficient and eco-friendly strategy for one-pot synthesis of heterostructured composites with intimate contact for photocatalytic application.
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Inorganic Chemistry Frontiers
·
2019
·Vol. 7
·期 2
·437-446
·
IF 5.934
Yuwei Wang,Xianggui Kong,Meihong Jiang,Fazhi Zhang,Xiaodong Lei
A bifunctional ZnIn2S4/Nb2O5 (ZIS/NbO) photocatalyst was constructed by growing Nb2O5 nanospheres on the petals of ZnIn2S4 microspheres via a facile hydrothermal approach. The composite possessed a direct Z-scheme heterostructure that was confirmed by in situ irradiated X-ray photoelectron spectroscopy (ISI-XPS) and electron spin resonance (ESR) measurements. Owing to the good charge separation efficiency in the Z-scheme system, the lifetime of charge carriers in ZIS/NbO was obviously prolonged. Thus, the rate of hydrogen evolution for optimized ZIS/NbO was 2.8 and 1.8 times higher than that of Nb2O5 and ZnIn2S4, respectively. Furthermore, the ZIS/NbO also showed good performance for the oxidation of biomass-derived intermediate 5-hydroxymethylfurfural (HMF) to value-added products. More importantly, the coupled photocatalytic H2 reduction and HMF oxidation were achieved on the ZIS/NbO Z-scheme heterostructure at the same time. Due to the presence of a direct Z-scheme heterojunction that prevents the recombination of photogenerated electrons and holes in the composite, the ZIS/NbO displayed excellent photocatalytic performance. Our findings are expected to offer a broad optical window for fabricating bifunctional heterostructured composites for coupled photocatalytic reduction and oxidation.
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Materials Today Physics
·
2023
·
IF 11.5
Zhenfei Yang,Xinnian Xia,Ming Fang,Longlu wang,Shuaijun Pan,Yang guo
Efficient spatial separation of photogenerated carriers is the key to achieving photocatalytic oxidation reduction synergistic reactions, and the built-in electric field generated by piezoelectric effects can provide a strong driving force for charge separation. A novel Pt/ZnIn 2 S 4 /BaTiO 3 (PBZIS) piezo-photocatalyst with spatial charge separation was successfully constructed through two-step hydrothermal and photodeposition methods. Due to the special 1D/2D core/shell structure, the inner BaTiO 3 can served as hole-storage layer, while the outer Pt nanoparticles can acted as electron capture center, thus greatly improving the separation of photo generated charge carriers and achieving spatial separation of redox sites. Under the ultrasound, the polarized electric field induced by the piezoelectric effect can further improve the extraction rate of photo generated holes by BaTiO 3 and accelerate surface catalytic reactions . Therefore, the synergism of electron/hole co-extraction and piezoelectric effect construct a directional transmission channel and target active sites for photogenerated electron-holes over PBZIS heterojunctions , reuslting in the highest performance for photocatalytic cooperative H 2 evolution (1335.3 μmol g −1 h −1 ) and HMF oxidation (1070.8 μmol g −1 h −1 ). This work would inspire the development of high-performance piezo-photocatalysts for the cooperative biomass oxidation coupling with high efficient hydrogen evolution .
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