JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Kexin Wang,Zhongge Luo,Bin Xiao,Tong Zhou,Jianhong Zhao,Congcong Shen,Dequan Li,Zhishi Qiu,Jin Zhang,Tianwei He,Qingju Liu
TiO 2 photocatalysts are of great interest in the fields of environmental purification, new energy and so on, because of their non-toxicity, high stability, high redox ability and low cost. However, the photogenerated carriers are severely recombined, which limits the application of TiO 2 photocatalysts. Herein, S-scheme Cu 3 P/TiO 2 heterojunction composites were successfully synthesized by a simple and efficient microwave hydrothermal method, and the results show that the hydrogen production rate of Cu 3 P/TiO 2 is 5.83 mmol∙g −1 ∙h −1 under simulated sunlight irradiation, which is 7.3 and 83.3 times higher than that of pure TiO 2 and Cu 3 P, respectively. This excellent performance is derived from the internal electric field (IEF) and energy band bending generated by the S-scheme heterojunction formed between Cu 3 P and TiO 2 . The density functional theory (DFT) calculation indicates that the Cu 3 P possess smaller work function and more negative conduction band (CB) position than that of TiO 2 , which is very conducive to greatly improve the H + reduction ability and hydrogen production performance. This work provides a new idea for the reveal of electron transfer paths and active sites in S-scheme heterojunctions and deepens the mechanism understanding.
研究领域:
材料科学
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环境科学
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能源科学
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产品关联
DOI
PubMed
高影响因子
Nanoscale
·
2019
·Vol. 11
·期 13
·6394-6400
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IF 6.97
Liangbin Liu,Lei Ge,Yuyang Sun,Binbin Jiang,Yafei Cheng,Lai Xu,Fan Liao,Zhenhui Kang,Mingwang Shao
The search for efficient, stable and low-cost electrocatalysts for water splitting is a big challenge faced by energy conversion systems. In this work, Cu3P–Co2P nanocomposites with numerous interfaces are employed as catalysts for water splitting in alkaline solution. The quasi-layer structure of Co2P and the polarized plane of Cu3P endow the nanocomposites with large surface areas and active sites, which substantially favors the intrinsic charge transfer and boosts the catalytic activity. In addition, Cu3P reduces the lattice mismatch between Co2P and nickel foam and then enhances the catalytic stability. For the optimized Cu3P·0.75Co2P catalyst, a low overpotential of 124.6 mV@−20 mA cm−2 is required with a Tafel slope of 65 mV dec−1 for the hydrogen evolution reaction (HER) and an overpotential of 334 mV (at 20 mA cm−2) is required for the oxygen evolution reaction (OER). The potential for the overall-water-splitting@10 mA cm−2 is about 1.55 V with the optimized Cu3P·0.75Co2P catalysts. Theoretical and experimental results both reveal the significance of coupling of Cu3P in the two processes of water-splitting for the Cu3P–Co2P nanocomposite catalyst.
研究领域:
材料科学
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能源转换
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电催化
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产品关联
DOI
PubMed
高影响因子
Nanoscale
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2016
·Vol. 8
·期 40
·17516-17523
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IF 7.76
Xinzheng Yue,Shasha Yi,Runwei Wang,Zongtao Zhang,Shilun Qiu
Semiconductor-based photocatalytic hydrogen (H2) evolution from water is of great importance for solar-to-chemical conversion processes to boost and promote the future hydrogen economy. Here, for the first time, we demonstrate that p-Cu3P coupled with n-TiO2 forms a novel hybrid structure which accelerates electron–hole pair separation and transfer for improved photocatalytic H2-evolution activity. The rate of H2 evolution of the optimized Cu3P/TiO2 (7940 μmol h−1 g−1) is 11 times higher than that of bare TiO2, with an apparent quantum efficiency (AQE) of 4.6%. This work may provide more insight into the synthesis of novel phosphide-based hybrid materials with high photocatalytic H2-evolution activity and sufficient stability for solar-to-chemical conversion and utilization.
研究领域:
材料科学
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能源化学
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纳米技术
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产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2024
·
IF 20.2
Tianyi Wu,Jiaxuan Chen,Lingyue Liu,Xiaolei Qu,Shourong Zheng,Dongqiang Zhu
Electrochemical reduction of nitrate to ammonia (NH 3 ) provides an attractive approach to accomplish resource utilization of pollutants, while exploring efficient catalysts with high catalytic activity and NH 3 FE at low applied potentials remains great challenging. Herein, we constructed a three-dimensional Cu 3 P/Cu catalyst and studied its catalytic performances in electrochemical nitrate reduction reaction . The Cu 3 P/Cu catalyst with finely balanced metallic Cu and Cu 3 P sites exhibits a high NH 3 yield of 4.27 mg h −1 cm −2 after 1 h reaction at a low applied potential (-0.05 V vs RHE), outperforming most of previously reported Cu-based catalysts. DFT calculations demonstrate the favored reduction of nitrate to nitrite on metallic Cu and hydrogenation of nitrite to NH 3 on Cu 3 P. This study opens up new opportunities for the application of Cu 3 P/Cu catalyst as a robust tandem electrocatalyst in the large-scale production of NH 3 through electrochemical reduction with low energy consumption.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
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2017
·Vol. 6
·期 5
·2100-2106
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IF 8.867
Xingxing Ma,Yaqing Chang,Zhe Zhang,Jilin Tang
The design of cost-efficient earth-abundant catalysts with superior performance for electrochemical water splitting is highly desirable. Herein, we report a simple and effective approach to fabricate a high-performance NiCoP@Cu3P heterostructure on Cu-foam (NiCoP@Cu3P/CF) for the first time, which has synergistic active sites, large electrochemical surface area, small charge-transfer resistance, efficient mass transport and electron transfer for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The optimized NiCoP@Cu3P/CF exhibits a pretty low overpotential of 54 mV at 10 mA cm−2 and a small Tafel slope of 72 mV dec−1 serving as a HER electrocatalyst and also exhibits a low overpotential of 309 mV at 10 mA cm−2 and an extremely small Tafel slope of 42 mV dec−1 serving as an OER electrocatalyst in 1 M KOH.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
FUEL
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2024
·
IF 6.7
MingCheng Yang,Chuan Lai,ChunTan Chen,Ying Li,Lu Chen
Fabricating type-II heterostructures to accelerate the charge separation of the photocatalysts has been considered as a prospective strategy to improve the photocatalytic performance. Herein, a novel type-II photocatalytic heterojunction was fabricated by integrating Cu 3 P on nanosheet CdIn 2 S 4 to accelerate carrier separation, enhancing the RhB degradation and H 2 evolution performance. The Cu 3 P/CIS composite achieved complete RhB degradation within 40 min and an impressive 95 % photodegradation efficiency for RhB. Quenching experiments and electron spin resonance (ESR) measurements confirmed that the ·O 2 – plays an important role in the degradation of RhB. Meanwhile, the optimal Cu 3 P/CdIn 2 S 4 photocatalyst shows a high hydrogen evolution rate of 1058 umol ·g −1 ·h −1 , which was 7 and 1.8 times higher than that of pure CIS. The outstanding photocatalytic performance was ascribed to the robust built-in electric field at the interface between two components driving force for electron migration.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
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2019
·Vol. 19
·期 6
·3232-3236
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IF 1.093
Peng Mingyue,Ci Suqin,Shao Ping,Cai Pingwei,Wen Zhenhai
Exploiting effective electrocatalysts toward electrochemical conversion of CO2 into valued-added chemicals is highly desirable for achieving the global carbon cycle. In this work, we report the synthesis of Cu3P/C nanocomposites by phosphatizing the copper-based
metal organic framework precursor. Systematic electrochemical characterizations demonstrate the Cu3P/C nanocomposites hold high activity and favorable selectivity towards CO2 reduction reaction (CO2RR) into CO, as manifested by an onset potential is about −0.25
V versus reversible hydrogen electrode (RHE) and a faradic efficiency (FE) of 47% for CO production at a relatively low potential (−0.3 V). The attractive catalytic properties might be attributed to the synergistic effect of cooper and phosphorus elements, as well as the unique structure
of Cu3P. Furthermore, we propose an asymmetrical-electrolyte Zn–CO2 battery with the Cu3P/C as cathode catalyst, demonstrating a decent performance with an open-circuit voltage of 1.5 V and a power density of 2.6 mW cm−2 (at 10 mA cm−2).
研究领域:
材料科学
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电化学
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能源转换技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Catalysts
·
2023
·Vol. 13
·期 2
·291
·
IF 3.9
Huancong Shi,Xulei Yao,Shijian Lu,Yuanhui Zuo,Tao Zheng,Liangquan Jia
Sulfamethoxazole is a widely—used antibiotic with high water solubility and low biodegradability, which was considered a refractory environmental pollutant. Hence, a series of functionalized hybrids uniting Cu3P with TiN were prepared. The Cu3P/TiN—x composites remarkably removed the sulfamethoxazole in solution compared with Cu3P and TiN alone. All the as—prepared Cu3P/TiN—x hybrids integrated the advantages of strong adsorption and photocatalysis and achieved removal rates above 70% of sulfamethoxazole. Among the composites, the Cu3P/TiN—2 with a 1:1 molar ratio of Cu: Ti reached a 90% removal rate under dark adsorption for 30 min and subsequent photodegradation for 120 min. The enhanced performance of the Cu3P/TiN—x composites is attributed to the introduced flocculent TiN with a large specific surface area and high conductivity that provide more reactive sites and high electron transferability. Meanwhile, the strong corrosion resistance and chemical stability were also beneficial to the improved performance. Cycling experiments further demonstrate the stability and reliability of the composites. In addition, the capture experiments indicated that the superoxide radical (·O2−) and hydroxyl radical (·OH) played a major role in sulfamethoxazole degradation.Keywords:Cu3P/TiN;plasmonic photocatalyst;sulfamethoxazole;photodegradation
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2021
·Vol. 15
·期 4
·2935-2942
·
IF 8.897
Chen Jiayi,Li Xu,Ma Bo,Zhao Xudong,Chen Yantao
The sluggish charge transfer and poor intrinsic activity are the bottlenecks that hamper the further development of electrocatalysts for hydrogen evolution. A novel core-shell heterostructure of Cu 3 P@Ni is fabricated, which is composed of Cu 3 P nanorods covered by metallic Ni. The as-prepared Cu 3 P@Ni exhibits a durable and superior activity toward hydrogen evolution, with an overpotential of 42 mV to deliver 10 mA·cm −2 and a Tafel slope of 41 mV·dec −1 . Charge redistribution is observed after successfully constructing the core-shell heterostructure, leading to the altered electronic structure. The theoretical calculations have manifested that Cu 3 P@Ni exhibits a zero bandgap and optimized adsorption strength of intermediates, which could give rise to the accelerated charge transfer as well as increased intrinsic activity. This work could shed light on the development of novel electrocatalysts with modulated electronic structure for highly efficient hydrogen evolution.
研究领域:
材料科学
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电催化
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Guangye Ge,Shaoteng Yuan,Qingzhi Liu,Defeng Yang,Jinsheng Shi,Xuefang Lan,Kefeng Xiao
The development of low-cost photocatalysts for highly efficient and durable photocatalytic H 2 evolution under visible light is of great challenge. In present study, a Z-scheme Cu 3 P/Zn 0.5 Cd 0.5 S is fabricated via in-situ phosphidation method for efficient visible-light-driven H 2 evolution. The wide light absorption property of Cu 3 P enhances the visible light absorption of Cu 3 P/Zn 0.5 Cd 0.5 S. The electrical conductivity of metallic Cu 3 P and the Z-scheme constructure of Cu 3 P/Zn 0.5 Cd 0.5 S accelerate electron transport rate. The Cu 3 P/Zn 0.5 Cd 0.5 S catalyst achieves highest hydrogen evolution rate of 2.7 mmol g −1 h −1 , which is 3.1 folds higher than that of pristine Zn 0.5 Cd 0.5 S. More interestingly, the Cu 3 P/Zn 0.5 Cd 0.5 S exhibited increasing H 2 production during reaction. The further reduction of PO 3 3− →P &− and the further formation of Cu 3 P is determined to be the key reason for increasing activity. Besides, Cu 3 P/Zn 0.5 Cd 0.5 S prepared by in-situ phosphidation method shows much better catalyst property and performance than that prepared by afterwards mixing method, and the possible reasons for such difference is proposed in present study.
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
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 33
·17876-17884
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IF 12.732
Bing Chang,Xia-Guang Zhang,Zhaojun Min,Weiwei Lu,Zhiyong Li,Jikuan Qiu,Huiyong Wang,Jing Fan,Jianji Wang
Electrochemical conversion of CO2 into syngas (CO and H2) has attracted extensive research studies because it is a promising pathway to produce liquid fuels and industrial chemicals. However, to achieve a high current density at a desired CO/H2 ratio is still a great challenge although it is extremely important in practical applications. In this work, we developed a partially reduced Cu3P nanowire (R-Cu3P/Cu) by selective phosphating to catalyze the CO2-to-syngas conversion. It is found that R-Cu3P/Cu is highly effective for the conversion with a wide tunable range of the CO/H2 ratio (0.1–2.24) and high faradaic efficiency (FE, >93%). More importantly, this catalyst exhibits a record current density of 115 and 82.9 mA cm−2 at the CO/H2 ratio of 2/5 and 1/2, which are precisely required for Fischer–Tropsch synthesis. Mechanism studies reveal that the effective charge transfer from Cu to P on the partial phosphorus vacancy surface makes Cu3P nanostructures exhibit remarkable activity and selectivity for CO2 reduction by a diatomic activating bimolecular mechanism.
研究领域:
材料科学
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化学工程
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2021
·
IF 19.503
Daiyong Chao,Qing Dong,Jinxing Chen,Zhixuan Yu,Weiwei Wu,Youxing Fang,Ling Liu,Shaojun Dong
Cu 3 P nanoparticles (NPs) were proposed as an efficient antibacterial agent for impeding bacterial resistance. Both sensitive and resistant strains of E. coli and S. aureus (3 × 10 6 CFU mL −1 ), and the microbial populations from a fishery water were completely inactivated by Cu 3 P NPs (≤ 1.5 µg mL −1 ) within 30 min with no regrowth. The antibacterial mechanism of Cu 3 P NPs relied on their own multiple enzyme-like activities, to elucidate, the action of ROS produced by their oxidase- and peroxidase- like activities was facilitated by their inherent activities for glutathione depletion and the lipid peroxidation. Comparing with that traditional antibiotics induced bacterial resistance (6 out of 7) within 3 passages, Cu 3 P NPs kept their initially inactivated efficiency, demonstrating that they can delay the onset of bacterial resistance. Furthermore, the Cu 3 P NPs shown no obviously toxic effect on aquatic organisms and a negligible side-effect toward mammalian tissues. This strategy is insightful for struggle with resistant bacteria.
研究领域:
微生物学
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生物化学
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环境科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）