APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Min Zhang,Jiacheng Yao,Muhammad Arif,Bo Qiu,Hongfei Yin,Xiaoheng Liu,Shen-ming Chen
The electronic transmission mode can effectively influence the photogenerated electron-hole separation efficiency, which further influence the photocatalytic hydrogen production performance. Herein, we synthesized a CeO 2 /ZnIn 2 S 4 composite photocatalyst having a 0D/2D heterojunction by facile solvothermal and room temperature precipitation methods. The successful construction of the heterojunction was demonstrated by XRD and XPS. Meanwhile, the interesting findings shows that the 0D “chess” CeO 2 compounded on the 2D “checkerboard” ZnIn 2 S 4 in SEM and TEM. The ESR test of O 2 − and OH demonstrates the photocatalytic mechanism of Z-scheme electron transport in the catalyst. The highest hydrogen production rate of the catalyst reaches 847.42 μmol·g −1 ·h −1 . This work provides a simple and effective strategy to achieve a rationally design photocatalyst for efficient, stable and cost-effective solar hydrogen production applications.
研究领域:
材料科学
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能源化学
✓ 已验证
DOI
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
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Ligang Ma,Chao Lin,Wenjun Jiang,Le Xu,Yujie Shao,Tianyu Zhu,Ting Zhao,Xiaoqian Ai,Xiaoshan Wu
In the face of energy scarcity and environmental degradation, photocatalysis emerges as a green and highly efficient method to convert solar energy into a renewable energy source . In this study, CdS nanoparticles were successfully grown in situ along the edges of ZnIn 2 S 4 nanosheets using ultrasound during the synthesis process and the second phase precipitation of In(OH) 3 appeared in the process of preparation. Optimal Cd and S ratios resulted in ZnIn 2 S 4 @In(OH) 3 @CdS heterojunction exhibiting remarkable photocatalytic H 2 production performance compared to standalone ZnIn 2 S 4 and CdS. The internal heterojunction interface within the composite naturally generates an electric field, enhancing carrier separation and facilitating their transport. Additionally, the inclusion of In(OH) 3 further expedites carrier extraction. Ultimately, the mechanism behind the photocatalytic H 2 production was elucidated using the Z-scheme mechanism. This work introduced a novel approach to fabricating multifunctional photocatalysts , presenting a fresh perspective in their design and preparation.
研究领域:
材料科学
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能源化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Quan Zhang,Juhua Zhang,Lu Zhang,Mengting Cao,Fengli Yang,Wei-Lin Dai
To make persistent efforts at enhancing hydrogen evolution driven by solar energy, this work, for the first time, had introduced flower-like ZnIn 2 S 4 coupled with black phosphorus (BP) as efficient photocatalyst for hydrogen evolution with photo-deposited Pt assisted under visible light irradiation. The hydrogen evolution efficiency of BP, ZnIn 2 S 4 , 0.5%BP/ZnIn 2 S 4 , 0.5%Pt/BP, 0.5%Pt/ZnIn 2 S 4 and 0.5%Pt/0.5%BP/ZnIn 2 S 4 photocatalysts were successively conducted and results showed that both BP and Pt played an important role in enhancing the photocatalytic hydrogen evolution rate. Therefore, the ternary 0.5%Pt/0.5%BP/ZnIn 2 S 4 composite exhibited the strongest hydrogen production efficiency at 1278 μmol/g/h, about 10 times higher than that of pristine ZnIn 2 S 4 (131 μmol/g/h) and represented a highly stable characteristic after suffering four recycles. The promoting hydrogen evolution of ternary photocatalyst could be ascribed to the unique bandgap and larger two-dimensional plane structure of BP, which provided abundant landing sites for the anchor of flower-like ZnIn 2 S 4 , thus leading to a well-inhibited recombination and efficient separation of photogenerated electrons and hole pairs between ZnIn 2 S 4 and BP. The remarkable photocatalytic hydrogen evolution performance and prominent stability all indicated that 0.5%Pt/0.5%BP/ZnIn 2 S 4 was a promising photocatalyst candidate for solar hydrogen production.
研究领域:
材料科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Danni Zeng,Tingzhe Shen,Yadong Hu,Fengjiao Liu,Ze Liu,Jun Song,Rongfeng Guan,Changjian Zhou
Photothermal synergistic catalysis is a novel technology that converts energy. In this study, ZnIn 2 S 4 with S-vacancy (ZIS-Vs) is combined with Nickel, Nickle Oxide and Carbon Nanofiber aggregates (Ni-NiO@CNFs) to create a multi-interface coupled photocatalyst with double Schottky barrier, double channel and mixed photothermal conversion effect. Theoretical calculation confirms that the Gibbs free energy (ΔG *H ) of the S-scheme heterojunction in the composite material is −0.07 eV, which is close to 0. This promotes the adsorption of H* and accelerates the formation of H 2 . Internal photothermal catalysis is achieved by visible-near infrared (Vis-NIR, RT) irradiation. The internal photothermal catalytic hydrogen production rate of the best sample (0.9Ni-NiO@CNFs/ZIS-Vs) is as high as 17.24 mmol·g −1 ·h −1 , and its photothermal conversion efficiency (η) is as high as 61.42 %. Its hydrogen production efficiency is 20.52 times that of ZIS-Vs (0.84 mmol·g −1 ·h −1 ) under visible light (Vis, RT) conditions. When the Vis-NIR light source is combined with external heating (75 ℃), the hydrogen production efficiency is further improved, and the hydrogen production efficiency (29.16 mmol·g −1 ·h −1 ) is 26.75 times that of ZIS-Vs (1.09 mmol·g −1 ·h −1 , Vis-NIR, RT). Further analysis shows that the increase in hydrogen production resulted from the apparent activation energy (Ea) of the catalyst decreasing from 16.7 kJ·mol −1 to 9.28 kJ·mol −1 . This study provides a valuable prototype for the design of an efficient photothermal synergistic catalytic system.
研究领域:
材料科学
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催化化学
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产品关联
DOI
PubMed
高影响因子
Inorganic Chemistry Frontiers
·
2024
·Vol. 11
·期 23
·8383-8391
·
IF 6.1
Chen Zhang,Gao Xu,Qifeng Liang,Li Liang,Zebo Fang,Rong Wu,Shunhang Wei,Lei Wang,Xiaoxiang Xu
ZnIn2S4 nanosheets with tunable concentration of dual vacancies (i.e. Zn vacancy and S vacancy) were prepared and used for photocatalytic H2O2 production. Introducing dual vacancies effectively promotes exciton dissociation, facilitates O2 adsorption, and reduces the free energy of subsequent activation and protonation of adsorbed O2. These intriguing properties endow ZnIn2S4 with excellent performance for sacrificial agent-free H2O2 photosynthesis via a two-step single-electron oxygen reduction reaction pathway under AM 1.5 and visible-light irradiation. Almost double amounts of H2O2 can be produced over ZnIn2S4 with dual vacancies compared to pristine ZnIn2S4 without vacancies. Corresponding SCC efficiency and AQY at 420 ± 20 nm reached ∼0.031% and 0.34%, respectively. In addition, the abundant dual vacancies inhibit H2O2 decomposition because of enhanced hydrophilicity. This work provides a new strategy to improve the photocatalytic performance of ZnIn2S4 through defect engineering and brings new mechanistic insights into the role of these defects.
研究领域:
材料科学
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环境科学
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化学
✓ 已验证
产品关联
DOI
高影响因子
ChemCatChem
·
2021
·Vol. 13
·期 24
·5148-5155
·
IF 5.686
Wangxi Liu,Jianmin Chen,Xueling Pan,Tingting Wang,Yingwei Li
Graphical Sulfur vacancies and nickel dopants were simultaneously introduced into ultrathin ZnIn 2 S 4 nanosheets (ZIS NSs) to boost photocatalytic hydrogen evolution. Ni 0.05 −V S −ZIS reaches the highest photocatalytic hydrogen evolution rate of 8.91 mmol g −1 h −1 under visible light irradiation. The synergistic role of S vacancies and Ni dopants allows the photoexcited electrons in the CB to transfer to the trap state, thus delaying the recombination of photogenerated electrons and holes. Introducing vacancies and element doping are effective approaches to boost photocatalytic activities of metal sulfides. In this work, sulfur vacancies and nickel dopants were simultaneously introduced into ultrathin ZnIn 2 S 4 nanosheets (ZIS NSs) to explore their synergistic role in promoting photocatalytic hydrogen evolution. The S vacancies can trap the photo-generated electrons, lower the conduction band minimum (CBM), improve the photo-generated charge reduction capacity and prolong the carrier lifetime. Meanwhile, Ni dopants cause an increase in the Fermi level (E F ), which ensures a higher charge density and an effective carrier separation efficiency. The optimum hydrogen evolution rate of sample Ni 0.05 −V S −ZIS reaches 8.91 mmol g −1 h −1 under visible light due to the synergistic effect of the S vacancies and Ni dopants.
研究领域:
材料科学
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纳米技术
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光催化
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能源材料
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Peng Zhang,Xin Yin,Deguang Zhang,Pengyu Guo,Wenbo Liu,Runwei Wang,Zongtao Zhang,Shilun Qiu
3D (Three-dimensional) hollow porous structured materials received a lot of attention due to their significant benefits in photocatalytic reactions. In this study, 3D ZnIn 2 S 4 -In 2 S 3 hollow hierarchical porous nanotubes were synthesized by a one-step MOF (metal–organic framework) templating strategy as efficient catalysts for photocatalytic hydrogen evolution in water. The dynamic process between the internal collapse of In-MIL-68 and the growth of ZnIn 2 S 4 crystals with attached outer edges led to the one-step in situ preparation of hollow ZnIn 2 S 4 -In 2 S 3 heterojunction catalysts. Crucially, In-MIL-68 simultaneously induced the formation of In 2 S 3 hollow porous nanotubes and the construction of ZnIn 2 S 4 -In 2 S 3 hierarchical heterojunction with ultrathin nanosheets. The optimal photocatalytic efficiency was obtained by adjusting the relative composition of the two-component heterojunction, and the optimized ZnIn 2 S 4 -In 2 S 3 -10 showed hydrogen evolution efficiency of 5.01 mmol·h −1 ·g −1 under visible light irradiation in the absence of co-catalysts and a high AQY (the apparent quantum yield) of 16.23 % at 420 nm, which was noticeably higher than the photocatalytic efficiency of the one-component and two-step synthesized In 2 S 3 -ZnIn 2 S 4 . Both theoretical and experimental results demonstrated that the construction of heterojunction and the forming of hollow porous nanotubes enhanced visible light absorption and promoted the separation and transfer of photogenerated carriers, thereby increasing the photocatalytic activity of the prepared materials. Meanwhile, ZnIn 2 S 4 -In 2 S 3 hierarchical hollow nanotubes exhibited good stability and reusability, offering a new way to fabricate MOF-based hollow hierarchical photocatalysts.
研究领域:
材料科学
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光催化
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2020
·
IF 4.939
Fangxu Dai,Ying Wang,Ruiyang Zhao,Xinran Zhou,Jishu Han,Lei Wang
Novel ZnIn 2 S 4 /CaTiO 3 nanocubes were prepared by a two-step method and used as a visible light photocatalyst for efficient hydrogen production . The control of the content of CaTiO 3 could effectively change the photocatalytic H 2 production activity of ZnIn 2 S 4 /CaTiO 3 nanocubes, and the maximum H 2 evolution amount reached to 133116.43 μmol g −1 in 6 h. The photocatalytic hydrogen production efficiency of ZnIn 2 S 4 /CaTiO 3 nanocubes was almost 4.5 times higher than that of pure ZnIn 2 S 4 . The electrochemical impedance spectrum of ZnIn 2 S 4 /CaTiO 3 exhibited the smallest arc radius, time-resolved PL spectrum showed that the carrier lifetime of ZnIn 2 S 4 /CaTiO 3 nanocubes was 3.29 ns, and the photocurrent density of ZnIn 2 S 4 /CaTiO 3 reached to 0.81 μA cm −2 . The prepared ZnIn 2 S 4 /CaTiO 3 nanocubes increased visible light absorption, improved the separation and transfer of photo-generated electrons and holes, and inhibited the recombination of photo-generated electron-hole pairs. ZnIn 2 S 4 /CaTiO 3 nanocubes exhibited the enhanced photocatalytic activity and high stability, and could be used as promising photocatalyst for hydrogen production application.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
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.
研究领域:
环境科学
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材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
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.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2024
·
IF 3.5
Mingzhang Wang,Jie Yang,Yifei Zhang,Chenyang Shao,Yan Xing
Heterojunction photocatalytic materials show great promise in hydrogen production from water decomposition under visible light. The selection of components in the heterojunction and the type of heterojunction constructed directly determine the hydrogen production efficiency. In this study, black phosphorene (BP), which has a broad visible light absorption range, and ZnIn 2 S 4 (ZIS), with a suitable band structure, are chosen to design new heterojunction photocatalysts. Through an ultrasound-assisted solvothermal method, a BP/ZIS heterojunction with a unique layered 2D/2D structure is successfully synthesized. Comprehensive characterization and calculation have elucidated the microstructure and band structure of BP and ZIS, further confirming the formation of a Z-scheme heterojunction. Such a novel BP/ZIS heterojunction exhibits a remarkable photocatalytic hydrogen evolution rate of 1317 µmol·h −1 ·g −1 , making a 3.35-fold increase compared to ZIS and superior performance over BP. This enhancement in photocatalytic activity of BP/ZIS heterojunction can be primarily attributed to the enhanced light harvesting and carrier utilization resulting from the formation of the Z-scheme heterojunction. This work provides new insights for the development of efficient photocatalysts for hydrogen production.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）