INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
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IF 8.3
Keda Bao,Siyi Qiu,Wentian Wang,Chao Yang,Wei Wang,Xiaoli Wang,Qijun Wang,Jiawen Yin,Qinghui Jin,Jiawen Jian,Jie Zou
The new palladium nanoparticles (Pd NPs) based carrier-free catalytic combustion hydrogen (H 2 ) sensor presents a promising potential for H 2 energy vehicle due to excellent vibration and low power consumption. However, the sintering of the Pd NPs at elevated temperatures decreases the sensitivity, limiting the applications of these sensors. To enhance the durability of Pd NPs based carrier-free catalytic combustion H 2 sensor, palladium-platinum alloy nanoparticles (PdPt NPs) was fabricated on the filament by a co-electrodeposition method. The impact of morphology and composition of PdPt NPs on the sensing performance was systematically investigated. The results indicated that Pt atoms in the alloy can restrict the mobility of Pd atoms, which may reduce the sintering between particles at elevated temperatures. Compared to a pure Pd NPs H 2 sensor, the PdPt NPs H 2 sensor demonstrated superior sensitivity and linearity and their low power consumption and durability were significantly improved.
研究领域:
材料科学
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传感器技术
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能源工程
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产品关联
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
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2025
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IF 6.3
Lijing Qiu,Na Li,Guoqing Zhang,Jiayang Zhang,Weizhou Jiao,Ruixin Wang
Background The exploration of efficient and stable transition metal-based co-catalysts is of great importance for the large-scale hydrogen production by photocatalytic water splitting. Methods Herein, a rod-shaped nitrogen-doped carbon (NC)-supported cubic molybdenum carbide (α-MoC) ( i.e. MoC/NC) was explored to decorate CdS, thus forming MoC/NC@CdS to enhance its photocatalytic hydrogen generation under visible light irradiation (≥400 nm), in which MoC/NC derived from the in-situ carbonization of the complex of phosphomolybdic acid (PMo 12 ) and Zr(IV) porphyrinic metal-organic framework (MOF-545) under inert atmosphere. Significant findings Due to the intrinsic hydrogen reduction activity of MoC and its improved electron structure by the NC layer, the accelerated photogenerated electron transfer of CdS to MoC by the MoC/CdS Schottky junction and the good conductivity of NC layer, as well as the resulting acceleration of carrier separation, MoC/NC@CdS exhibits outstanding photocatalytic hydrogen generation performance, achieving 32.14 mmol g⁻¹ h⁻¹ of H 2 production rate, which was a 9.43-fold increase relative to that of pristine CdS. And the apparent quantum yield (AQY) at 420 nm was up to 1.77 %. Moreover, MoC/NC significantly mitigates the photocorrosion effect of CdS, therefore enhancing its duration.
研究领域:
材料科学
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能源化学
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产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
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2025
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IF 5.4
Jingbiao Ge,Huihui Xue,Yang Yang,Sujuan Zhang,Xiuzhen Zheng,Shifu Chen
Studies on highly efficient heterojunction photocatalysts are regarded as an important task for H 2 production by water splitting. In this work, a novel ternary Fe 3 S 4 /ZnCdS/ZnS (FS/ZCS/ZnS) heterostructures were successfully prepared by a simple grinding method. With ZCS/ZnS nanoclusters loading on the surface of Fe 3 S 4 microflowers, photocatalytic H 2 production of ZCS/ZnS was largely improved in lactic acid (LA) solution. The H 2 evolution rate of FS/ZCS/ZnS is high up to 4.36 mmol g −1 h −1 under visible light irradiation and 8.13 mmol g −1 h −1 under full spectrum irradiation. Prolonged experiments and cycle tests showed that FS/ZCS/ZnS is stable and reusable. The formation of ternary heterostructures facilitates the separation and transfer of photogenerated charge carriers (PCCs, including photogenerated electrons and holes), leading to the activity enhancement of photocatalytic H 2 production. The strategy for the heterojunction construction can provide more perspective for the design of high-efficiency and recyclable photocatalysts for H 2 evolution.
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DOI
高影响因子
CATALYSIS TODAY
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2020
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IF 5.825
Yichen Yang,Xin Chen,Yufeng Pan,Huaibing Song,Bin Zhu,Yan Wu
Photocatalytic hydrogen production is recognized as a prospective technology for energy conversion to alleviate the energy shortage. Hence, we propose a convenient method to synthesize two-dimensional (2D) ZnS-propylamine (pa) hybrid complex materials with traditional solvothermal method, demonstrating prominent photocatalytivity under visible light irradiation. Meanwhile, the improvement of hydrogen production has been further investigated by controlling different in-situ ultrasonic times. The optimized hydrogen generation obtained from ZnS(pa) x was up to 1828 μmol/g under 4 h visible light irradiation. The high performance could be contributed by the inorganic-organic coordination effect on optimizing the morphology and structure, which enlarge reaction sites and accelerate carriers migration of the material. This work represents an effective approach to promote and optimize the traditional wide bandgap semiconductors for enlarging visible light photocatalytic performances.
研究领域:
材料科学
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能源转换技术
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2025
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IF 19
Wei Yu,Xinru Zhang,Muge Gu,Yihui Zhang,Xiangqi Zhang,Jiayu Wang,Genjiang Zheng,Wei-En Yuan
Peripheral nerve injuries, often caused by trauma and tumor resection, severely impair motor and sensory functions. While autologous nerve grafting remains the gold standard, its efficiency is hindered by limited donor tissue availability, donor site morbidity, and neuropathic pain. Tissue-engineered nerve grafts, emerging as promising alternatives, still face challenges due to the lack of essential biochemical and biophysical cues for comprehensive nerve regeneration. This study introduces a Janus Mg 2+ /H 2 pump conduit, constructed with a MgH 2 @PLGA middle layer, polycaprolactone (PCL) outer layers, and a polydopamine-coated PCL (PCL@PDA) inner layer. The PCL provides structural support, while the MgH 2 @PLGA layer continuously releases Mg 2+ and H 2 as biochemical cues, driven by an acidic microenvironment and the MgH 2 -water reaction. PDA modification of the inner layer, serving as biophysical cues, further increases cell adhesion. Mg 2+ released from the conduit mitigates oxidative stress in Schwann cells and increases their expression of neurotrophic factors, while the H 2 attenuates inflammation, aiding nerve regeneration. In a rat sciatic nerve defect model, the conduit shows enhanced functional, electrophysiological, and histological recovery. These findings highlight the potential of Janus Mg 2+ /H 2 pump conduit as a promising approach for peripheral nerve defect repair by offering a conducive microenvironment.
研究领域:
神经科学
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生物材料学
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再生医学
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2021
·Vol. 32
·期 5
·2107597
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IF 18.808
Jinli Chen,Guangfu Qian,Hao Zhang,Shouquan Feng,Yanshan Mo,Lin Luo,Shibin Yin
Developing highly efficient Pt-based catalysts through interface engineering is significant for hydrogen production by water electrolysis working at pH-universal conditions but still challenging. Herein, a PtCo@PtSn heterojunction with good hydrogen evolution reaction (HER) performance in pH-universal electrolytes is designed and prepared by combining the advantages of a Pt-based bimetallic alloy and heterojunction. Density functional theory simulations illustrate that the surface electronic structure of Pt is optimized by interface engineering to effectively improve the ability of water dissociation and decrease the Pt H bond strength for obtaining the suitable H* Gibbs free energy (∆ G H* ). It shows low HER overpotentials in 1.0 m KOH (η −10 = 25 mV), 1.0 m phosphate-buffered saline (η −10 = 18 mV), and 0.5 m H 2 SO 4 (η −10 = 21 mV) solutions, respectively, and it can steadily work for 100 000 (100k) cycles by cyclic voltammetry method. Thus, this work provides a novel strategy to design Pt-based hydrogen evolution catalyst with robust catalytic performance.
研究领域:
材料科学
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电化学
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能源转换与存储
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2025
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IF 19
Shenzhen Cong,Si Sun,Yijing Zhang,Ming Wang,Zhehua Jia,Youhua Zhao,Huan Pang
Metal–organic framework (MOF) membranes offer a wide range of applications, including simultaneous hydrogen generation and decarbonization. The permselectivity of gas molecules can be considerably increased by optimizing the oriented of MOF membranes, and it is possible to construct MOF membranes with high permeance and high selectivity. Here, chelation-assisted interfacial growth is used to prepare ZIF-L membranes for H 2 /CO 2 separation. The growth rate of the ZIF-L crystal plane is regulated by optimizing the interface Zn 2+ diffusion, and a ZIF-L membrane with preferred orientation is constructed for efficient separation of H 2 /CO 2 . The optimized ZIF-L membrane has an H 2 permeance of over 2000 GPU, and the H 2 /CO 2 selectivity exceeds 30. Additionally, the prepared ZIF-L membrane exhibits outstanding operating stability and tolerance, making it a promising candidate for industrial applications.
研究领域:
材料科学
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化学工程
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膜技术
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气体分离
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纳米技术
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
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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 SOLID STATE CHEMISTRY
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2015
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IF 2.133
Xiaoxiang Xu,Yinghao Xie,Shuang Ni,Abul K. Azad,Tongcheng Cao
Solid solutions of ZnGa 2− x Cr x O 4 (0≤ x ≤2) were successfully prepared by solid state reactions . Introducing Cr into ZnGa 2 O 4 crystal structure significantly improves its light absorption and greatly enhances its photocatalytic activity . An optimized Cr content ( x =1.5 for ZnGa 0.5 Cr 1.5 O 4 ) was found for the solid solutions with the highest photocatalytic hydrogen production rate (~775 μmol/h). Compositional analysis suggests there is a strong enrichment of Cr at the surface of sample ZnGa 0.5 Cr 1.5 O 4 compared with other samples. Theoretical calculations suggest their electronic structures involve spin-polarized conduction band (CB) and valence band (VB) that are mainly composed of Cr 3 d orbitals. The highest photocatalytic activity observed in ZnGa 0.5 Cr 1.5 O 4 is probably due to the higher Cr content at the surface that favors the Cr 3 d orbital overlapping.
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DOI
高影响因子
DALTON TRANSACTIONS
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2022
·Vol. 51
·期 40
·15385-15392
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IF 4.569
Chang Gao,Dexin Wang,Yanshu Liu,Guanyun Zhang,Caiyun Liu,Amir Said,Huihui Niu,Guo Wang,Chen-Ho Tung,Yifeng Wang
Two nanosized titanium-oxide clusters (TOCs), Ti12(μ2-O)14(μ3-O)4PA16 (1; PA = 2-picolinate) and Ti12(μ2-O)18PA18 (2) were synthesized by using 2-picolinic acid and Ti(OiPr)4 in one-pot reactions. Their structures were determined using single-crystal X-ray diffractometry. Although both have the same core composition of Ti12O18, 1 exhibited superior H2 evolution activity of up to 180 μmol h−1 g−1, which is nearly eight times faster than 2. Mechanism studies revealed that 1 could induce the assembly of 2.3 nm PtNPs into 10–30 nm supra-nanoparticle structures, which contributed to the increased H2 evolution rate.
研究领域:
材料科学
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化学
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催化
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纳米技术
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF CATALYSIS
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2019
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IF 7.723
Jinxing Yu,Yawei Wang,Cai Shen,Xiaoxiang Xu
Titanoniobate nanosheets with thickness down to a few nanometers have been prepared by ion exchange and subsequent exfoliation treatment on a bulk layer compound KTiNbO 5 . Superior photocatalytic H 2 production activity has been realized on these nanosheets, surpassing their mother compound KTiNbO 5 . More interestingly, their photocatalytic activity has been successfully extended into visible light region when Cr/Nb co-dopants are introduced into nanosheets. The Cr/Nb modified nanosheets show apparent quantum efficiency as high as 2.75% at 420 ± 20 nm for H 2 production, outperforming a number of doped metal oxides photocatalysts. Such high photocatalytic activity origins from their tiny thickness and a much enlarged surface area that favors charge separation and transfer. Their little dependence on cocatalyst for H 2 production suggest that dopants Cr may also serve as catalytic reaction sites as a substantial fraction of Cr dopants are accommodated at the surface. This facile approach to fabricate ultrathin 2D semiconductor as well as versatility of doping strategy open new playground for the design and development of efficient visible light active photocatalysts.
研究领域:
材料科学
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光催化
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纳米科技
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能源化学
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半导体物理
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DOI
高影响因子
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY
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2021
·Vol. 66
·期 13
·1986-1994
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IF 1.312
Dongmei He,Du Liyong,Wang Keyan,Ding Yuqiang
As a cost-effective material, CuO has been widely used in many emerging fields. The synthesis method plays a key role in the performance of the material. Atomic layer deposition (ALD) has been developed as a precise technique to deposit materials with great control at atomic scale. Herein, an efficient process of ALD CuO is reported by using [Cu( s Bu-amd)] 2 and O 3 as precursors. CuO films can be deposited on SiO 2 substrates with typical self-limiting growth behaviors at 120–220°C. Notably, the growth rate of the CuO films is reach up to 2.5 Å/cycle, which is 6~12 times more than the available value. This remarkably high efficiency is the critical factor to promote the large-scale applications of ALD CuO materials. Furthermore, CuO is deposited on TiO 2 nano-particles (forming CuO/TiO 2 composite) using this ALD process to evaluate its performance for H 2 evolution. The 0.37 wt % CuO/TiO 2 composite (120 cycles CuO/TiO 2 ) can achieve a H 2 evolution rate of 3995 μmol g –1 h –1 , which is nearly 200 times larger than pure TiO 2 .
研究领域:
材料科学
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纳米科技
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催化化学
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能源材料
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半导体薄膜
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DOI
高影响因子
危险品化学品经营许可证（带存储）