INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
·
IF 8.1
Muhammad Ayyob,Aeysha Daud,Zhichao Sun,Ying-Ya Liu,Yao Wang,Iqbal Ahmad,Anjie Wang
ZIF-8-templated ZnIn 2 S 4 (ZIS) crystals with different morphologies have been synthesized solvothermally by varying the organic solvents , while thioacetamide (TAA) and L-cysteine (L‐cyst) were used as sulfur precursors. It is found that solvothermal properties, including ions coordination, dielectric constant , and atomic chain length, influence the nucleation and growth of ZIS composites. The differences in morphology and composition of the prepared ZIS crystals strongly affect their photophysical properties and photocatalytic hydrogen evolution reactions (PHER). The hydrogen evolution rates for ZIS composites decrease in the following order: Leaf‐like (EG, TAA) > nanorods (EtOH, TAA) > nanoflowers (EG, L‐cyst) > nanosheets (Gly, TAA) > irregular particles (EDA, TAA) > plate‐like (DETA, TAA). The leaf‐like ZIS‐EG composite prepared using TAA as a sulfur precursor and ethylene glycol (EG) as a solvent shows an excellent PHER performance of 5208 μmol g −1 h −1 (44.91 μmol) with an apparent quantum yield (AQY) of 4.80% at 420 nm. The ZIS‐EG composites with different ZIF‐8 contents (50, 100, 150, and 200 mg) were also investigated for the PHER activity with mixed Na 2 S/Na 2 SO 3 sacrificial agent at λ ≥ 420 nm. It shows that the nature of solvents and sulfur precursors had a significant influence on the morphology, photoabsorption, electrochemical properties , and PHER performance of ZIF‐8‐templated ZIS composites, which complements the knowledge of designing efficient and perspective photocatalysts with enhanced visible‐light‐driven PHER performance.
研究领域:
材料科学
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化学工程
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能源科学
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DOI
高影响因子
Journal of Materials Chemistry A
·
2026
·
IF 9.2
Chao Yang,Xiao-Li Pu,Qi Yin,Qing-Ping Huang,Lei Cai,Ping Liu,Zhi-Bin Fang
Elucidating properties of cocatalysts from all aspects endows them new roles as proactive regulators of light harvesting and reaction kinetics to promote the overall efficiency of photocatalysts. [Mo3S13]2- nanoclusters have served as one of the most efficient catalysts for hydrogen evolution reaction (HER), while their underlying photo-responsive behaviors within hybrid photocatalyst systems remain unexplored. Herein, we unveil the visible-light sensitization effect of [Mo3S13]2- nanoclusters, in the mode of hot electron injection, that drive apparent and sustainable photocatalytic HER. This effect was demonstrated by loading [Mo3S13]2- nanoclusters on wide-bandgap nanosized ZnS host. Detailed characterizations further clarified the photosensitization of [Mo3S13]2- nanoclusters by revealing the dependence of HER activity on the enhanced visible light responsivity and the light-induced nanocluster-to-host electron transfer. This work not only showcases the dual function of the advanced [Mo3S13]2- nanocluster cocatalysts but also provides guidance for the discovery and understanding of more multifunctional materials opening new opportunities for efficient and multi-mode photocatalysis.
✓ 已验证
DOI
高影响因子
GREEN CHEMISTRY
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2019
·Vol. 21
·期 15
·4152-4158
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IF 9.405
Bernard Baffour Asare Bediako,Qingli Qian,Jingjing Zhang,Ying Wang,Xiaojun Shen,Jinbiao Shi,Meng Cui,Guanying Yang,Zhen Wang,Shengrui Tong,Buxing Han
Synthesis of ethanol from cheap and renewable CO2 is of great importance, but is still a challenge. Because it involves CO2 hydrogenation with simultaneous C–C bond formation, and the synergy of two or more transition metals is usually required for catalyzing the reaction effectively. Moreover, higher temperature is needed to drive the reaction. In this work, we found that the monometallic Ru3(CO)12 catalyst could efficiently catalyze the synthesis of ethanol from CO2, methanol and H2 in the ionic liquid, 1-butyl-3-methylimidazolium chloride ([bmim]Cl), using LiCl and LiI as promoters. Ethanol could form at 120 °C, which is among the lowest temperatures reported to date. A detailed study indicated that ionic liquids play an important role in monometallic catalysis. High ethanol selectivity and activity were obtained under optimized conditions. In addition, the catalyst could be easily recycled and the TON of ethanol reached 180 after five cycles. To our knowledge, this is the first time that an ionic liquid has been used as a reaction medium to produce ethanol using CO2 and H2.
研究领域:
化学
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可再生资源利用
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Hongmiao Zhou,Ruolin Chen,Changcun Han,Pan Wang,Zhengfu Tong,Baohua Tan,Yizhong Huang,Zhifeng Liu
Designing functional heterojunctions to enhance photocatalytic hydrogen evolution is still a key challenge in the field of efficient solar energy utilization. Copper phosphides become an ideal material to serve as the cocatalysts during photocatalytic hydrogen evolution by virtue of the lower prices. In this study, we synthesized graphitic carbon nitride (g-C 3 N 4 ) based catalysts loaded with copper phosphide (Cu 3 P, Cu 97 P 3 ), which exhibit superior performance in photocatalytic H 2 evolution. Ultraviolet (UV)-visible spectroscopy illustrated that the absorption of light strengthened after the loading of copper phosphide, and the time-resolved transient photoluminescence (PL) spectra showed that the separation and transfer of the photoexcited carriers greatly improved. Moreover, both copper phosphide/g-C 3 N 4 photocatalysts exhibited a relatively high H 2 evolution rate: Cu 3 P/g-C 3 N 4 (maximum 343 μmol h −1 g −1 ), Cu 97 P 3 /g-C 3 N 4 (162.9 μmol h −1 g −1 ) while copper phosphide themself exhibit no photocatalytic activity . Thus, the copper phosphides (Cu 3 P, Cu 97 P 3 ) work as a cocatalyst during photocatalytic H 2 evolution. The cycling experiments illustrated that both copper phosphide/g-C 3 N 4 photocatalysts perform excellent stability in the photocatalytic H 2 evolution. It is worth noting that while the NaH 2 PO 2 was heated in the tube furnace for phosphorization to obtain Cu 3 P, the excessive PH 3 could pass through the solution of CuSO 4 to obtain Cu 97 P 3 at the same time, which significantly improved the utilization of PH 3 and reduced the risk of toxicity. This work could provide new strategies to design photocatalysts decorated with copper phosphide for highly efficient visible-light-driven hydrogen evolution.
研究领域:
材料科学
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催化
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可再生能源
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光化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Omega
·
2020
·
IF 2.87
Jianbo Zhao,Jun Wei,Di Cai,Hui Cao,Tianwei Tan
A poly(amino acid)-based approach for scalable synthesis of micro-/mesoporous carbon (PC) with high specific surface area and narrow distribution of micro- and mesopores is presented. Using cross-linked poly aspartic acid as a precursor, PC was obtained by in situ one-step carbonization without the activating agent. The resulting PC had an ultrahigh adsorption capacity for H2 (4.43 wt %) and CH4 (4.49 mmol g–1). This novel method could significantly decrease the wastewater hazards caused by washout of the considerable amount of the activating agent. The PC showed promising application in gas adsorption and storage.
研究领域:
材料科学
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能源存储
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环境科学
✓ 已验证
DOI
PubMed
高影响因子
Advanced Science
·
2024
·
IF 14.3
Yongwen Ren,Faying Fan,Yaojian Zhang,Lin Chen,Zhe Wang,Jiedong Li,Jingwen Zhao,Bo Tang,Guanglei Cui
Direct seawater splitting (DSS) offers an aspirational route toward green hydrogen (H 2 ) production but remains challenging when operating in a practically continuous manner, mainly due to the difficulty in establishing the water supply–consumption balance under the interference from impurity ions. A DSS system is reported for continuous ampere-level H 2 production by coupling a dual-cation exchange membrane (CEM) three-compartment architecture with a circulatory electrolyte design. Monovalent-selective CEMs decouple the transmembrane water migration from interferences of Mg 2+ , Ca 2+ , and Cl − ions while maintaining ionic neutrality during electrolysis; the self-loop concentrated alkaline electrolyte ensures the constant gradient of water chemical potential, allowing a specific water supply–consumption balance relationship in a seawater–electrolyte–H 2 sequence to be built among an expanded current range. Even paired with commercialized Ni foams, this electrolyzer (model size: 2 × 2 cm 2 ) continuously produces H 2 from flowing seawater with a rate of 7.5 mL min −1 at an industrially relevant current of 1.0 A over 100 h. More importantly, the energy consumption can be further reduced by coupling more efficient NiMo/NiFe foams (≈6.2 kWh Nm −3 H 2 at 1.0 A), demonstrating the potential to further optimize the continuous DSS electrolyzer for practical applications.
研究领域:
化学工程
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材料科学
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可再生能源
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CATALYSIS COMMUNICATIONS
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2020
·
IF 3.612
Miao Ren,Fengping Fu,Qian He,Fang Liao
A novel ZSMo core-shell nanowire photocatalyst was synthesized by ion exchange and hydrothermal methods. The photocatalytic activity of ZSMo nanocomposites was evaluated via photolysis of water to produce hydrogen. The results showed that the hydrogen generation rate of ZSMo-0.1 core-shell nanowires was the highest, which was about 23 times that of pure ZnO. The improvement of photocatalytic activity was attributed to the formation of type II and ternary heterojunctions, which enable the rapid separation of photo-induced charge carriers and capture more light radiation. It was confirmed by UV–Vis diffuse reflectance spectroscopy, electrochemical impedance spectroscopy and photocurrent analysis.
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
INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Yanan Liu,Lingchang Jiang,Yuyang Tian,Zhifeng Xu,Wenting Wang,Ming Qiu,Hongmei Wang,Xi Li,Guangshan Zhu,Yangang Wang
Photocatalytic water splitting into H2 is the most economic and environmentally friendly strategy for H2 production, and rationally constructing a heterojunction retains enormous influence on a photocatalytic system. Herein, 2D/2D covalent organic framework/graphitic carbon nitride (COF/CN) van der Waals heterojunctions were readily prepared via an ultrasonic method for high-efficiency visible-light photocatalytic H2 production. The photocatalytic H2 production performance of optimized COF/CN composites can reach up to 449.64 μmol·h–1, which is approximately 5 times that of pure CN (89.08 μmol·h–1). The characterization and experimental studies reveal that the synergistic effect between COF and CN contributes to promoting the interfacial migration and spatial separation of photoinduced e––h+ pairs, further boosting the photocatalytic hydrogen production activity. This work may open a new window to design and fabricate effective heterojunction photocatalysts for photocatalytic energy conversion.
研究领域:
材料科学
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能源化学
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光催化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2015
·
IF 4.321
Juan Feng,Changhua An,Linxiu Dai,Junxue Liu,Guijuan Wei,Song Bai,Jun Zhang,Yujie Xiong
To seek robust active photocatalysts for sunlight-driven water splitting, a variety of semiconductor materials have been developed to achieve high photocatalytic efficiency. In this work, the CdS nanoplates with rough surface have been synthesized through a two-step ionic-exchange route. The as-synthesized sample was modified by Pt in an in situ photo-deposition cell to fabricate hybrid Pt/CdS nanophotocatalyst. The rate of average solar hydrogen evolution over the Pt/CdS nanoplates reached 3.75 mmol h −1 g −1 , which is significantly higher than that of bare CdS and NiS/CdS counterparts. Furthermore, the Pt/CdS exhibited very high stability in continuous solar H 2 evolution at a relatively stable state even over a 16-day reaction period, implying the as-fabricated hybrid nanophotocatalyst is approaching the practical requirements. The significantly enhanced photocatalytic efficiency was ascribed to the merits of rough plate-like nanostructures and the assistance of Pt co-catalyst, which can promote the light-absorption capability and photo-carrier separation as well as provide reactive sites. The present work opens an avenue to construct efficient and stable solar-driven catalysts for new energy creation.
研究领域:
材料科学
·
能源科学
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2015
·
IF 6.723
Ding Wei,Lihua Yao,Song Yang,Zhentao Cui,Bingxue Wei,Minhua Cao,Changwen Hu
In2TiO5, containing both early transition metal (d0) and p-block metal (d10), is a very promising candidate for possible application in H2 production because of its suitable edges of conduction and valence bands and the crystal structure, which is considered to favor mobility of charge carriers. Herein we report, for the first time, the synthesis of novel oxygen vacancies (OV), N-doped In2TiO5 (OV,N–In2TiO5) with controllable band gap. The resultant OV,N–In2TiO5 sample was prepared by a multistep sol–gel calcination process and studied as a near-infrared (NIR) light-driven photocatalyst for H2 production. OV and N-doping can effectively extend the photoresponse of In2TiO5 to the NIR region due to an interband springboard and the reduced band gap, thus leading to efficient NIR light photocatalytic H2 production activity with Pt as a cocatalyst.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Yue Xi,Hao-Qiang Feng,Yi-Ke Li,Qun-Zeng Huang
Modification with co-catalyst has been regarded as an effective strategy to improve the photocatalytic H 2 evolution activity of Mn x Cd 1−x S. Herein, cauliflower-like Mn x Cd 1−x S decorated with Ni 2 P nanoparticles has been prepared via solvothermal method. Experiment results confirmed that modification with Ni 2 P could promote charge transfer efficiency and boost surface reaction rate of Mn x Cd 1−x S. The superior activity of 14.20 mmol g −1 h −1 was obtained over the 3 wt% Ni 2 P/Mn 0.2 Cd 0.8 S composite, which was approximately an 8.3-fold enhancement over pure Mn 0.2 Cd 0.8 S. Furthermore, the activity over Mn 0.2 Cd 0.8 S modified with Ni 2 P was higher than other Ni-based co-catalysts (Ni, Ni 2 S, Ni(OH) 2 , NiB and NiSe 2 ) modification. This work offers a new perspective to design highly efficient photocatalytic system towards H 2 evolution.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2022
·Vol. 12
·期 15
·4893-4902
·
IF 6.177
Keting Feng,Tao Sun,Xiaoyun Hu,Jun Fan,Dongyuan Yang,Enzhou Liu
Photocatalytic H2 evolution is a promising way to obtain green H2 due to its clean and sustainable characteristics. Herein, a series of 0D/2D Co0.85Se/TiO2 heterojunctions were fabricated through a successive two-step hydrothermal strategy. Among them, 15%-Co0.85Se/TiO2 displays the most excellent H2 rate of 2312.5 μmol g−1 h−1, which is 10.3 times and 10.8 times higher than that of TiO2 and Co0.85Se, respectively. And the H2 production rate per electrochemically active surface area of 15%-Co0.85Se/TiO2 is 127.41, which is obviously more than that of TiO2 (14.17) and Co0.85Se (5.39). Based on the core-level alignment method and free radical capture tests, the enhanced activity mainly resulted from the higher electrochemically active surface area and the formation of a p–n heterostructure between TiO2 and Co0.85Se. This research provides a strategy for the development of noble metal-free nanocomposites for efficient photocatalytic H2 production.
研究领域:
材料科学
·
化学
·
能源科学
·
环境科学
✓ 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）