RSC Advances
·
2021
·Vol. 11
·期 45
·28211-28222
·
IF 3.361
Congrong Lu,Shiwen Du,Yanfei Zhao,Qi Wang,Kuankuan Ren,Chunhe Li,Weidong Dou
The low separation efficiency of photogenerated charges and severe photocorrosion seriously impeded the application of CdS in photocatalytic water splitting. Here we report new routes to improve the photocatalytic performance of CdS nanowires (NWs) by decorating with Ag2S nanoparticles, so Ag2S/CdS heterojunction is constructed. The Ag2S/CdS heterojunction exhibited optimal photocatalytic H2 evolution rate of 777.3 μmol h−1 g−1, which is 12.1 times higher than that of pure CdS. The intrinsic characteristics of Ag2S/CdS nanocomposites, such as structure, optical properties, and surface chemical state are systematically studied by experimental characterizations and theoretical calculations. The comprehensive analysis demonstrates that the heterojunction between Ag2S and CdS accelerates photoinduced electrons transfer from CdS to Ag2S, enhancing their ability for water splitting. Meanwhile, the holes on the valence band of CdS react with the sacrificial agents, thus leading to the efficient separation of photogenerated electron–hole pairs. This work offers a simple route to synthesize one-dimensional CdS-based nanocomposites for efficient energy conversion driven by visible light.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2020
·Vol. 44
·期 32
·13728-13737
·
IF 3.288
Jiaqian Lu,Zhe Zhang,Lin Cheng,Hong Liu
Herein, a series of MoS2-wrapped Mn0.2Cd0.8S nanospheres with different MoS2 content were fabricated via a two-step hydrothermal route. The photocatalytic activity of the as-prepared MoS2/Mn0.2Cd0.8S composites for H2 production and reduction of CO2 under visible light irradiation was investigated. The results demonstrated that the ultra-thin MoS2 nanosheets were uniformly wrapped on the surface of cauliflower-like Mn0.2Cd0.8S nanospheres, and an intimate interfacial contact was formed between MoS2 and Mn0.2Cd0.8S. The MoS2/Mn0.2Cd0.8S hybrids exhibited significantly enhanced photocatalytic activity compared with the pristine Mn0.2Cd0.8S. The optimal MoS2 loading content was determined to be 3.0 wt%, giving a H2 production rate of 335.02 μmol h−1 and a CH3OH production rate of 2.13 μmol h−1, which were around 5.1 and 5.4 times that of bare Mn0.2Cd0.8S, respectively. The superior photocatalytic activity was predominantly attributed to the intimate contacts between Mn0.2Cd0.8S and MoS2, which facilitated the transfer and separation of the photoexcited charge carriers. Moreover, the as-synthesized MoS2/Mn0.2Cd0.8S composites also showed excellent stability. This study demonstrates the great potential of MoS2-wrapped Mn0.2Cd0.8S as a noble-metal-free catalyst for photocatalytic energy conversion.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
JOURNAL OF CATALYSIS
·
2019
·
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
·
光催化
·
纳米科技
·
能源化学
·
半导体物理
✓ 已验证
DOI
高影响因子
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY
·
2021
·Vol. 66
·期 13
·1986-1994
·
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
·
纳米科技
·
催化化学
·
能源材料
·
半导体薄膜
✓ 已验证
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2015
·
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.
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2012
·Vol. 1
·期 3
·752-758
·
IF 0
Heping Ma,Hao Ren,Xiaoqin Zou,Fuxing Sun,Zhuojun Yan,Kun Cai,Dayang Wang,Guangshan Zhu
Novel porous aromatic frameworks, PAF-18-OH and its lithiated derivative PAF-18-OLi, have been successfully synthesized. In particular, PAF-18-OLi displays significant enhancement of H2 and CO2 adsorption capacity, especially for CO2 uptake (14.4 wt%). More valuably, the stable PAF-18-OLi material exhibits high CO2/N2 selectivity, as high as 129 in the case of CO2 capture from simulated post-combustion flue gas mixtures (85% N2 and 15% CO2). Furthermore, the PAF-18-OLi has shown improved H2 storage capacity after lithiation.
研究领域:
材料科学
·
环境化学
·
储能
✓ 已验证
DOI
JOURNAL OF SOLID STATE CHEMISTRY
·
2026
·
IF 3.2
Xiaowen Li,Chenyu Chu,Jiahua Cheng,Le Chen,Zhihui Zhang,Yong Jin,Chuan Jiang,Goujian Ji
Bromine functionalization improves low-pressure CH 4 /H 2 separation in UiO-66. • UiO-66-Br 2 shows the highest CH 4 /H 2 selectivity among the three samples. • Bromination strengthens CH 4 -framework interactions and favors CH 4 adsorption. • Bromination leads to a capacity-selectivity trade-off in the UiO-66 series. Efficient separation of CH 4 /H 2 mixtures is crucial for hydrogen purification but remains challenging because of the limited adsorption contrast between the two gases in conventional porous adsorbents. Herein, UiO-66 and its brominated derivatives, UiO-66-Br and UiO-66-Br 2 , were synthesized and systematically investigated through structural characterization, adsorption measurements, ideal adsorbed solution theory (IAST), grand canonical Monte Carlo (GCMC) simulations, and density functional theory (DFT) calculations. Bromination preserved the parent UiO-66 framework while effectively regulating the pore environment and host-guest interactions. At 273 K and 1 bar, the experimental CH 4 uptake increased from 0.809 mmol g −1 for UiO-66 to 0.938 mmol g −1 for UiO-66-Br 2 . Both IAST and binary GCMC consistently demonstrated enhanced CH 4 /H 2 separation after bromination, with UiO-66-Br 2 exhibiting the best overall performance. In particular, binary GCMC simulations yielded a CH 4 /H 2 selectivity of 14.23 for UiO-66-Br 2 at 0.1 bar, representing an approximately 73 % enhancement over pristine UiO-66 (8.23). DFT calculations further revealed that the CH 4 binding energy increased from 7.097 kJ mol −1 for BDC to 26.433 kJ mol −1 for BDC-Br 2 , indicating substantially strengthened local CH 4 -linker interactions. These results demonstrate that bromine functionalization, particularly dibromination, effectively enhances CH 4 -preferential adsorption and CH 4 /H 2 separation through the synergistic regulation of pore confinement and host-guest interactions. Download: Download high-res image (401KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Ziyi An,Suchang Zou,Yi Cai,Bo Xiong,Weilong Shi,Yuzhen Zhao
Citric acid modification reduces red mud alkalinity, enabling effective S-scheme heterojunction with ZnIn₂S₄; • The 4 wt%-ARM/ZIS achieves 2.59 mmol g −1 h −1 H₂ production, 3.28 times higher than pristine ZnIn₂S₄; • Innovative strategy for red mud valorization in sustainable photocatalytic hydrogen production. Hydrogen energy has emerged as a major research focus owing to high combustion heat value, zero carbon emissions, and diverse utilization forms, while photocatalytic hydrogen production, in particular, has attracted considerable interest by virtue of cost-effectiveness and environmental compatibility. Red mud (RM), a large-volume waste from bauxite refining, features a complex composition with harmful and strongly alkaline species that make its disposal costly and environmentally hazardous, thereby demanding urgent and effective treatment solutions. Herein, RM was modified with citric acid to reduce the strong alkalinity of RM, thereby obtaining acid-treated RM (ARM), which is beneficial to be used as reduction photocatalyst and combine with the typical oxidation photocatalyst (ZnIn 2 S 4 , ZIS) to construct the S-scheme heterojunction. The results reveal that the optimal 4 wt%-ARM/ZIS composite achieved the highest photocatalytic hydrogen production rate of 2.59 mmol g −1 h −1 under full-spectrum light irradiation, 3.28 times higher than pure ZIS, demonstrating significant improvement in photocatalytic performance. This work provides innovative approaches and practical solutions for the utilization of RM resources, while also promoting their application in photocatalytic hydrogen production.
✓ 已验证
DOI
高影响因子
Nature Communications
·
2026
·
IF 18.1
Wang Xiao-hong,Liu Xu-jia,Wang Yun-biao,Li Yi-lei,Liu Shao-jia,Mu Hui-ying,Li Fa-tang
Revealing the mechanism of photocatalytic organic transformation in aqueous solutions is crucial for photocatalytic processes, yet precisely regulating complex interfacial electron transfer and the microenvironment of reaction molecules remains challenging. Inspired by cellular structures and natural metalloproteins, we construct a ZIF-67@CoS/CdS nanoreactor mimicking organelle architecture. This system enables directional charge transport and hydrogen-bond microenvironment regulation, allowing efficient co-production of H 2 and pyruvic acid under light irradiation. Characterizations and calculations reveal that the interfacial electric field accelerates charge migration, while the catalyst reduces the energy barriers for water dissociation and hydrogen formation by modulating hydrogen bonds. The optimized catalyst delivers a molar-level H 2 activity of 1457.1 mmol m −2 (5 h, 1,000 cm 2 ) under sunlight, with a pyruvic acid selectivity of 91.2%. In this work, we propose a design strategy for an organelle-mimetic nanoreactor for scalable sunlight-driven H 2 production and selective pyruvic acid synthesis.
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2026
·
IF 4.4
Jiahui Wang,Jingbiao Ge,Huihui Xue,Yang Yang,Sujuan Zhang,Xiuzhen Zheng,Shifu Chen
Photocatalytic water splitting is an effective way to produce H2 and a key research direction in H2 energy development. In this paper, a Fe/FeP/ZnIn2S4 (Fe/FeP/ZIS) composite was prepared by a self-assembly method, with 2D Fe/FeP nanorods attached to the surface of 3D ZnIn2S4 (ZIS) microflowers. When the mass percentage of Fe/FeP loading was 5%, the Fe/FeP/ZIS heterojunction exhibited the best photocatalytic performance (4.56 mmol·g–1·h–1), much higher than that of Fe/FeP and ZIS. The significantly enhanced activity of Fe/FeP/ZIS was ascribed to the close interface contact formed between Fe/FeP and ZIS, which accelerated the separation and transfer of photogenerated charge carriers (PCCs). This study not only offers a reference for the design of novel non-noble cocatalysts but also promotes the improvement in the utilization efficiency of PCCs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2025
·
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
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
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
·
传感器技术
·
能源工程
✓ 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）