APPLIED SURFACE SCIENCE
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2023
·
IF 6.7
Di Wang,Hongcen Yang,Shuhao Tian,Guo Liu,Ying Wang,Xiao Sun,Zhixia Wang,Juan Hou,Fei Ma,Shanglong Peng
Hydrogen energy is regarded as the clean energy alternative for fossil energy. Hydrogen evolution reaction (HER) is a sustainable way for the production of hydrogen energy. However, commercial platinum (Pt) catalysts for HER are expensive and scarce, which will not fully meet the demand of the future market. Therefore, scientists have been actively exploring alternatives to Pt-based catalysts. Studies have shown that palladium (Pd) and Pt have similar catalytic activity in HER. Small molecular Pd nanoclusters can be used as a perfect HER activity center. Herein, anchoring of Pd nanoclusters (Pd NCs) on sulfur-vacancy-enriched ZnIn 2 S 4 nanosheets (Pd/ZIS-T) has been successfully achieved. The zeta potential value for ZnIn 2 S 4 is −59.9 mV, indicating that the surface of ZnIn 2 S 4 is abundant negatively charged in deionized water, thus providing plentiful anchoring sites to absorb Pd 2+ . The results show that the synergistic effect of Pd NCs and sulfur vacancies will endow the obtained catalyst with excellent electrocatalytic activity and stability. It also managed to reducing costs by reducing noble metal content. In particular, the Pd/ZIS-T electrocatalyst with excellent performance delivered low overpotential of 25 mV at 10 mA cm −2 and small Tafel slope of 33 mV dec -1 in acidic electrolyte.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
·
IF 9.9
Beibei Zhang,Wen Xiao,Jiawei Hu,Jinhong Liu,Hui Xu,Xueqing Zheng,Wuyou Wang,Haibo Wu,Xinguo Xi,Pengyu Dong,Hongbing Ji
To effectively separate electron-hole pairs produced by light, a heterojunction arrangement can be employed, thereby improving photocatalytic efficiency. In this study, a simple hydrothermal process is used to manufacture carbonized polymer dots/ZnIn 2 S 4 (CPDs/ZIS) heterostructure, which enhances the light absorption and charge carrier lifetime in comparison to bare ZnIn 2 S 4 (ZIS). Upon irradiation with visible light, the 3-CPDs/ZIS composite generates hydrogen at a rate of 133 μmol g −1 h −1 , which is 8.9 times faster than that of pure ZIS. The addition of CPDs can increase the range of light that can be absorbed, extend the service life of the optical charge, increase the specific surface area, and promote charge separation and transmission, which could effectively accelerate the photocatalytic reduction reaction. The presence of CPDs results in the introduction of multiple transition energy states and a decrease in the H* adsorption free energy, which enhances the hydrogen evolution activity according to the theoretical calculation findings of density functional theory (DFT) and Gibbs free energy of the hydrogen evolution process. Combining theoretical calculations and experimental results, a direct Z-type heterojunction mechanism is proposed for the hydrogen evolution promotion effectiveness of CPDs/ZIS under visible light.
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Materials Today Chemistry
·
2022
·
IF 7.613
Qiuyan Tan,Kaining Li,Qing Li,Yaobin Ding,Jiajie Fan,Zhihua Xu,Kangle Lv
TiO 2 nanosheet is a fruitful paradigm for a wide variety of photocatalytic applications due to its characteristics of high photoactivity, robust stability, and environmental friendliness. However, its pragmatic utilization for visible light photocatalytic energy conversion still remains challenging owing to the wide bandgap. Herein, a 2D/3D TiO 2 /ZnIn 2 S 4 nanostructure was purposively constructed via a microwave-assisted synthesis, with ZnIn 2 S 4 functioned as a photosensitizer to overcome the lack of visible light response capacity for TiO 2 . The optimal TiO 2 /ZnIn 2 S 4 sample exhibits an excellent photocatalytic H 2 evolution activity with a rate of 1167.38 μmol/g/h under visible light illumination, far beyond that of pristine TiO 2 nanosheet (6.78 μmol/g/h) and ZnIn 2 S 4 (378.51 μmol/g/h). The enhanced photocatalytic performance can be attributed to synergy effects of the extended visible light response, compatible band alignment, and fast charge carrier separation. The in situ irradiated X-ray photoelectron spectroscopy (XPS) was used to systematically study the transfer behavior of photo-induced electrons; the results highlighted that the flow direction of photoexcited charges is from ZnIn 2 S 4 to TiO 2 nanosheets due to the strong interfacial contact. Then both ZnIn 2 S 4 and TiO 2 nanosheets can act as the active sites for proton reduction, which therefore boosts the hydrogen production under visible irradiation. This work opens a new venue for the development of flexible photosensitization systems for solar-driven energy conversion.
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Journal of Cleaner Production
·
2022
·
IF 11.072
Lu Zhang,Jianhao Qiu,Dingliang Dai,Yichen Zhou,Xi Liu,Jianfeng Yao
MIL-101(Cr)@ZnIn 2 S 4 hierarchical heterojunction was delicately designed and fabricated through the in-situ growth of ZnIn 2 S 4 on MIL-101 and electrostatic self-assembly. It is affirmed that the Cr–S interface bonding between MIL-101 and ZnIn 2 S 4 in their composite was established based on the characterization results of X-ray photoelectron spectroscopy, Raman and zeta potential . Thus, a high-speed channel for charges transfer is offered due to the Cr–S bond, intimate interface contact and hierarchical structure of MIL-101@ZnIn 2 S 4 , which largely inhibits the recombination of photo-induced charge carriers and promises a remarkable photocatalytic activity . Choosing visible-light-driven reduction of Cr(VI) as a model, the optimal MIL-101@ZnIn 2 S 4 sample can reduce 95% of Cr(VI) within 30 min, corresponding to a rate constant of 0.107 min −1 , which is 2.9-fold compared with blank ZnIn 2 S 4 counterpart (MIL-101 has a negligible performance). Additionally, a conspicuous apparent quantum yield of 9.7% can be achieved at a wavelength of 420 nm. Eventually, to reinforce the practicability of MIL-101@ZnIn 2 S 4 , the composite powders were manufactured as aerogels utilizing bacterial cellulose as a substrate. The MIL-101@ZnIn 2 S 4 aerogel still exerts an enviable performance for photocatalytic reduction of Cr(VI) and stability. This work could inspire the material design and environmental remediation based on MOFs.
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Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Lian Yi,François Nkinahamira,Hongyi Jiang,Jingyuan Huang,Yueyong Ma,Rongshu Zhu
The development of photocatalyst is essential for achieving efficient photocatalytic water splitting for hydrogen production . Therefore, a novel Mo 2 N (MN) decorated ZnIn 2 S 4 (ZIS) with sulfur-rich vacancy (Sv-ZIS) photocatalyst was rationally constructed via a facile calcining-hydrothermal method for efficient photocatalytic H 2 production. The optimized photocatalyst exhibits an outstanding photocatalytic H 2 production rate of 10.28 mmol·g −1 ·h −1 , 7.52 and 3.11 times higher than that of bare ZIS and S V -ZnIn 2 S 4 (S V -ZIS), respectively. The characterizations reveal that the presence of MN and S-vacancies improves the light absorption capacity, and facilitates the separation and migration of photogenerated carriers. Density functional theory calculations (DFT) have confirmed that MN can optimize ΔG H* to approach 0, which is favorable for photocatalytic hydrogen production . Therefore, the combined effect of MN and S-vacancies facilitates efficient photocatalytic H 2 production of S V -ZIS/MN.
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MOLECULES
·
2023
·Vol. 28
·期 11
·4520
·
IF 4.6
Xiangrui Feng,Hongji Chen,Hongfei Yin,Chunyu Yuan,Huijun Lv,Qian Fei,Yujin Zhang,Qiuyu Zhao,Mengmeng Zheng,Yongzheng Zhang
ZnIn2S4(ZIS) is widely used in the field of photocatalytic hydrogen production due to its unique photoelectric properties. Nonetheless, the photocatalytic performance of ZIS usually faces problems of poor conductivity and rapid recombination of charge carriers. Heteroatom doping is often regarded as one of the effective strategies for improving the catalytic activity of photocatalysts. Herein, phosphorus (P)-doped ZIS was prepared by hydrothermal method, whose photocatalytic hydrogen production performance and energy band structure were fully studied. The band gap of P-doped ZIS is about 2.51 eV, which is slightly smaller than that of pure ZIS. Moreover, due to the upward shift of its energy band, the reduction ability of P-doped ZIS is enhanced, and P-doped ZIS also exhibits stronger catalytic activity than pure ZIS. The optimized P-doped ZIS exhibits a hydrogen production rate of 1566.6 μmol g−1h−1, which is 3.8 times that of the pristine ZIS (411.1 μmol g−1h−1). This work provides a broad platform for the design and synthesis of phosphorus-doped sulfide-based photocatalysts for hydrogen evolution.Keywords:ZnIn2S4;phosphorus doping;photocatalytic;hydrogen generation
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APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Fangxu Dai,Ying Wang,Xinran Zhou,Ruiyang Zhao,Jishu Han,Lei Wang
An efficient visible light responsive ZnIn 2 S 4 @NH 2 -MIL-53(Fe/Co 0.75 ) nanocomposite was prepared for photocatalytic hydrogen production application. Under visible light irradiation, the ZnIn 2 S 4 @NH 2 -MIL-53(Fe/Co 0.75 ) photocatalyst displayed improved photocatalytic performance and the hydrogen production rate reached to 161724.8 μmol/g in 6 h. The nanocomposite with large specific surface area and mesoporous structure increased the light absorption, improved the electrons transfer and suppressed the recombination of photogenerated electron-hole pairs, thus exhibiting efficient photocatalytic hydrogen production performance. The controllable synthesis of ZnIn 2 S 4 @NH 2 -MIL-53(Fe/Co 0.75 ) nanocomposite as a high-efficiency photocatalyst would have broad prospect for water splitting hydrogen production application.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2019
·Vol. 30
·期 21
·19137-19146
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IF 2.195
Xiang Ye,Zou Hao,Xu Yifeng,Deng Yuehong,Zhu Jie,Wu Wan,Zhou Yi
In this article, the novel direct Z-scheme ZnIn 2 S 4 @BiOBr-(110) heterojunction structure was firstly synthesized via simple two-step hydrothermal method. The results of XRD and HRTEM indicated that as-prepared BiOBr mainly exposed high energy (110) facet. Simultaneously, the photoelectrochemical measurement was performed to further investigate the photo-induced carrier separation efficiency. The results indicated that Z-scheme heterojunction structure formed by the loading of ZnIn 2 S 4 nanosheets not only promoted the separation of photogenerated carriers and inhibited fast recombination rate of photogenerated electron–hole pairs of pure BiOBr, but also endowed the composite with better redox activity. The degradation efficiency of RhB by BiOBr loaded with 10 mol% ZnIn 2 S 4 has achieved 98% within 18 min under the irradiation of Xe lamp, which demonstrated that the unique direct Z-scheme ZnIn 2 S 4 @BiOBr-(110) composite photocatalytic materials has the potential application in environmental pollution control and energy conversion.
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ACS Omega
·
2019
·
IF 2.584
Ruijie Yang,Kelin Song,Jiansheng He,Yingying Fan,Rongshu Zhu
In this work, the study of photocatalytic hydrogen production by RGO/ZnIn2S4 with simultaneous degradation of organic amines was carried out in the presence of organic amines in wastewater as the sacrificial agents. The effects of several factors, such as organic amine types, pH value, catalyst concentration, organic amine concentration, and sunlight source, on the photocatalytic activity of RGO/ZnIn2S4 for H2 production were investigated. At the same time, its performance of degrading organic amines during H2 production was also examined. The results showed that the order of H2 production activity of RGO/ZnIn2S4 in six organic amine solutions was N(CH2CH3)3 > N(HOCH2CH2)3 > N(CH3)3 > HO(CH2)2NH2 > C6H5–N2> CO(NH2)2, and the highest H2 production was in N(CH2CH3)3 (triethylamine) solution, being 1597 μmol·g–1·h–1, which is 2.6 times as high as that using the aqueous solution mixture of Na2S and Na2SO3 as the sacrificial agent. In addition, when the pH was 13, the catalyst concentration was 1.0 g·L–1, and the triethylamine concentration was 1.0 mol·L–1, the photocatalytic activity was the highest. Furthermore, the relationship between triethylamine concentration and H2 production was analyzed according to the theory of dynamics.
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ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Haoze Li,Mengyao Wang,Yingbing Zhang,Ye Chen,Li Wang,Jianping Yang
The photoreforming of plastic waste into high-value chemicals and H 2 fuels presents a sustainable and energy-efficient strategy to mitigate environmental pollution and energy crises. However, achieving high selective valuable products remains challenging due to the indiscriminate cleavage of chemical bonds in plastics. Herein, this study reports a sulfur-vacancies-rich ZnIn 2 S 4 photocatalyst decorated with ultrafine Ni nanoparticles (Ni 0.2 @ZIS-S v ) that enables highly photoreforming of poly(ethylene terephthalate) (PET) into formate and H 2 via targeted C─C bond cleavage under mild alkaline conditions. The Ni 0.2 @ZIS-S v photocatalyst achieves an H 2 evolution rate of 4.5 mmol g −1 h −1 , a 20.2-fold enhancement over pure ZnIn 2 S 4 , while formate is the primary liquid product with the selectivity reaching 84.8%. Mechanistic analysis reveals that the combined effects of Ni nanoparticles and sulfur-vacancies modify the electronic structure of ZnIn 2 S 4 , improving charge separation, lowering the energy barrier for H 2 generation, and facilitating selectively C─C bond cleavage. This dual optimization enhances both hydrogen yield and formate selectivity, demonstrating an effective strategy for designing advanced photocatalysts to upcycle plastic waste into high-value chemicals and clean energy.
研究领域:
光催化化学
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环境催化
·
能源材料
·
高分子降解
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清洁能源转化
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MOLECULES
·
2025
·Vol. 30
·期 22
·4368
·
IF 4.6
Shanhao He,Li Liu,Min Liu,Jinjun Tian,Yan Xue,Keliang Wu
To address the challenges of low solar energy utilization efficiency and rapid recombination of photogenerated charge carriers in photocatalytic hydrogen evolution, this study successfully constructed a composite photocatalyst of ZnIn2S4(ZIS) supported on N-doped hollow carbon spheres (N-HCS), denoted as ZIS/N-HCS, via a combination of template etching and in situ growth strategies. Characterization results demonstrate that this hollow structure possesses a high specific surface area (48.41 m2/g) and a narrowed bandgap (2.41 eV), achieve broad-spectrum light absorption, thereby enabling the catalyst to generate a local hot spot temperature of 136 °C under AM1.5G conditions. The optimized ZIS/N-HCS-0.30 sample exhibited a significantly enhanced photocurrent response (8.26 μA cm−2) and improved charge separation efficiency. When evaluated at a set solution temperature of 20 °C, the material exhibited a photocatalytic hydrogen evolution rate of 17.03 mmol g−1·h−1, which is 7.06 times higher than that of pure ZIS. Furthermore, it demonstrated excellent cycling stability. This work elucidates the synergistic role of the hollow photothermal structure in enhancing solar energy utilization and catalytic reaction kinetics, providing a new strategy for designing efficient solar-driven hydrogen production systems.
研究领域:
材料科学
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光催化
·
可再生能源
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纳米技术
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氢气制备
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Nan Li,Aihua Yan,Tongyang Zhang,Fei Huang,Zhiqing Xu,Heng Wang,Bolei Hui,Huaqi Yuan,Zigao Su
Multi-component optimization offers a potential route to achieve efficient bifunctional photocatalysis. However, rationally combining different components and clearly elucidating the photogenerated carrier dynamics still remain a significant challenge. In this study, ternary FeS 2 /S v -ZnIn 2 S 4 /FeOOH composites were constructed for efficient photocatalytic hydrogen production coupled with benzaldehyde generation. This material integrated sulfur vacancy, Ohmic-type FeS 2 /S v -ZnIn 2 S 4 contact and p-n-type S v -ZnIn 2 S 4 /FeOOH heterojunction, synergistically promoting the charge transfer and synchronous electron-hole utilization. As a result, high evolution rates of 21.5 and 21.2 mmol·g −1 ·h −1 for hydrogen production and benzaldehyde generation were achieved, accompanying with an apparent quantum efficiency of 14.2% at 420 nm, a fantastic benzaldehyde selectivity of 99.84%, and excellent photostability. This study provides a multi-component engineering strategy for regulating the charge carrier dynamics and enhancing the bifunctionally photocatalytic performance.
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