Journal of Materials Chemistry A
·
2025
·
IF 9.5
Yi Chen,Weilin Shi,Claudia Li,Kang Hui Lim,Xueqian Wang,Langlang Wang,Ping Ning,Yixing Ma,Sibudjing Kawi
Global warming, driven by rising levels of CO2 in the atmosphere, is an environmental predicament confronted by humanity. Plasma catalytic decomposition of carbon dioxide into carbon monoxide is a practical approach to mitigate this challenge, which can be a crucial step in carbon recycling. Metal selenides are promising candidates owing to their abundant reserves and outstanding electron transfer properties, making them highly active in chemical reactions. In this study, the morphology of AlO(OH) and the dispersion of Cu2−xSe were optimized by hydrothermal synthesis temperature. Specifically, the Cu2−xSe-Al-180 catalyst, prepared at a hydrothermal temperature of 180 °C, formed AlO(OH) with good crystallinity and a nanoscale thin-sheet structure, with Cu2−xSe uniformly distributed on the AlO(OH) support. The reaction of CO2 decomposition to CO production by integrating Cu2−xSe-Al-180 with dielectric barrier discharge (DBD) plasma led to a CO2 conversion of up to 28.07% at a specific input energy (SIE) of 58.07 kJ L−1. The excellent CO2 adsorption properties of AlO(OH) and Cu2Se reduce the activation energy barrier of the reaction, and Cu2Se further promotes the excited activation of CO2 in the plasma. These findings offer valuable insights for the development and design of catalysts in the field of plasma catalysis and highlight the potential of CuSe-based materials in CO2 reduction technologies.
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
高影响因子
CHEMISTRY OF MATERIALS
·
2019
·
IF 10.159
Beibei Shan,Yawen Zhao,Yiwen Li,Haitao Wang,Rui Chen,Ming Li
Dual-plasmonic Au–Cu2–xE (x > 0, E = S, Se, Te) hybrids present multifunctionalities for broad applications in photovoltaics, photocatalysis, and biomedicine. However, despite the increasing interest in these dual-plasmonic Au–Cu2–xE hybrids, precise control over the morphology and size of their substituents is crucial but greatly challenging. Herein, a selenium-mediated two-step synthetic approach is developed to prepare the Au@Cu2–xSe nanocrescents with precise control over their size and tunable plasmonic properties through varying the concentration of the SeO2 precursor. The complete encapsulation of the Au domain within the Cu2–xSe layer in the nanocrescent in an asymmetric manner enables the strong coupling between their substituents, significantly enhancing their optical properties supported by both experimental results and theoretical modeling. The increasing Cu2–xSe domain size enables the tuning of carrier densities and thereby molar extinction coefficients corresponding to the respective visible and near-infrared (NIR) plasmon bands of the Au@Cu2–xSe nanocrescents. Electron transfer from the Au to Cu2–xSe domains is unambiguously determined in the Au@Cu2–xSe nanocrescents by transient absorption (TA) and extinction spectral measurements. The Cu2–xSe-dependent bleaching amplitude and carrier dynamics of both visible and NIR plasmon TA signals are observed, along with variations of the carrier–phonon and phonon–phonon relaxation processes. This work not only presents a facile synthetic approach of high-quality dual-plasmonic Au@Cu2–xSe nanocrescents and a fundamental understanding of the coupling mechanism in the Au–Cu2–xSe hybrid system, but also provides a paradigm for the study on the interplay in a dual-plasmonic metal–semiconductor system.
研究领域:
纳米材料科学
·
生物医学工程
·
光子学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Zihao Lin,Yajing Guo,Jiang Bai,Aijun Hong,Changcun Li,Yanli Wu,Fangfang Kong,Qiang Xiao
Improving the thermoelectric performance and service stability is essential for the effective use of cuprous selenide (Cu2–xSe). In this study, hexagonal boron nitride (h-BN) was incorporated into nano-Cu2–xSe, with the goal of enhancing thermoelectric performance and service stability. It was found that Cu2–xSe-0.005 wt % BN showed a higher thermoelectric figure of merit (zT) value (∼1.76 at 923 K), which was 11% greater than that of pure Cu2–xSe, mainly due to a significant reduction in lattice thermal conductivity (kL) to about 50% (0.13 W m–1 K–1). Additionally, the formation of an ion-blocking interface by hexagonal boron nitride effectively shortens the migration path of Cu+ ions, improving service stability while maintaining the contribution of Cu+ transitions to thermal conductivity. Finally, an increase in hardness of ∼11.1% was observed, reaching 0.7 GPa in Cu2–xSe-0.02 wt % BN. This research is a feasible approach to improving the service stability of Cu2–xSe.
研究领域:
材料科学
·
热电材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
He Li,Jiali Jiang,Jianxing Huang,Yunhui Wang,Yueying Peng,Yiyong Zhang,Bing-Joe Hwang,Jinbao Zhao
In this study, one-dimensional Cu2–xSe nanorods synthesized by a simple water evaporation-induced self-assembly approach are served as the anode material for Na-ion batteries for the first time. Cu2–xSe electrodes express outstanding electrochemical properties. The initial discharge capacity is 149.3 mA h g–1 at a current density of 100 mA g–1, and the discharge capacity can remain at 106.2 mA h g–1 after 400 cycles. Even at a high current density of 2000 mA g–1, the discharge capacity of the Cu2–xSe electrode still remains at 62.8 mA h g–1, showing excellent rate performance. Owing to the excellent electronic conductivity and one-dimensional structure of Cu2–xSe, the Cu2–xSe electrodes manifest fast Na+ ion diffusion rate. Moreover, detailed Na+ insertion/extraction mechanism is further investigated by ex situ measurements and theoretical calculations.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2019
·
IF 4.084
Congcong Wei,Dazhong Zhong,Dandan Li,Genyan Hao,Guang Liu,Jinping Li,Qiang Zhao
Hydrogen production from electrolyzed water is a mature technology and has great development prospects in terms of energy conversion and utilization. However, the kinetically sluggish oxygen-evolution reaction becomes the limiting step in the electrolysis of water . Copper-based materials have been reported as a good choice to catalyze the oxygen evolution reaction , but their performance is poor. We describe a Cu 2-x Se@CuO/copper foam core–shell structure from the in situ electrochemical oxidation of Cu 2 Se/copper foam to promote the oxygen-evolution reaction performance. The presence of a semi-metallic Cu 2-x Se core and nanostructured CuO shell at a current density of 10 mA cm −2 requires a low overpotential of 253 mV. The Tafel slope was only 73 mV dec −1 . The preparation of Cu 2-x Se@CuO on three-dimensional copper foam facilitates the reaction.
研究领域:
材料科学
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能源转换与存储
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Biomaterials Advances
·
2025
·
IF 6
Haoyan Cheng,Beng Ma,Wanting Xia,Ying Yu,Jiayi Li,Keke Zhang,Linlin Shi,Hao Hu,Shegan Gao,Zhihong Zhu
In this study, we developed an innovative Cu 2-x Se/PDA/AIPH nanoparticle platform that combines photothermal therapy and chemotherapy for effective tumor treatment. The Cu 2-x Se nanoparticles, known for their strong near-infrared (NIR) absorption, were encapsulated within a polydopamine (PDA) and 2,2′-azobis[2-(2-imidazolin-2-yl)propane] dihydrochloride (AIPH) matrix. Upon NIR irradiation, the platform triggers localized heating and subsequent thermal decomposition of AIPH, releasing ROS to induce significant oxidative damage in tumor cells. In vitro and in vivo experiments demonstrated that Cu 2-x Se/PDA/AIPH nanoparticles exhibit excellent biocompatibility, effective photothermal conversion, and potent anticancer efficacy. This multifunctional nanosystem offers a promising approach for enhancing tumor therapy by combining PTT with ROS-mediated chemotherapy.
研究领域:
肿瘤学
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纳米医学
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生物材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Qingguo Yu,Yimin Liu,Qingru Zeng,Yuxiang Yang,Shunyan Ning,Yuezhou Wei,Xinpeng Wang,Deqian Zeng
Photocatalytic technology provides key benefits in utilizing solar energy for H 2 production and pollutant removal, making the pursuit of efficient photocatalysts a vital area of focus. Herein, a novel p-n heterojunction photocatalyst was synthesized by loading ZnSe nanoparticles onto Cu 2−x Se nanoplates, creating an internal electric field that facilitates the efficient separation of charge carriers and significantly enhances photocatalytic activity. The 14 % Cu 2−x Se/ZnSe nanocomposite exhibits excellent photocatalytic performance, achieving an H 2 production rate of 1846 μmol·g −1 ·h −1 , roughly 34 times that of pure ZnSe. Additionally, the Cr(VI) reduction rate constant of nanocomposite was 0.0277 min⁻¹ , which is 20 times and 5 times higher than those of ZnSe and Cu 2−x Se, respectively. The Cu 2−x Se/ZnSe photocatalyst demonstrated exceptional stability and reusability during multiple cycles of H 2 production and Cr(VI) reduction. An in-depth examination of experimental data and density functional theory (DFT) calculations led to proposing a potential mechanism. This work introduces a simple synthesis method for ZnSe-based photocatalysts, offering a novel approach for the effective application of solar energy in environmental and energy fields.
研究领域:
材料科学
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环境科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
Analytical Methods
·
2016
·Vol. 8
·期 41
·7516-7521
·
IF 1.915
Sheng Qiang Deng,Hong Yan Zou,Jing Lan,Cheng Zhi Huang
A novel method for sensitive melamine detection based on the aggregation-induced superior peroxidase-like activity of Cu2−xSe capped by sodium polystyrene sulfonate (PSS) (Cu2−xSe@PSS) nanoparticles has been developed. In the presence of melamine, Cu2−xSe@PSS nanoparticles aggregated and exhibited impressive peroxidase-like activity which can accelerate the oxidation of colorless 3,3′,5,5′-tetramethylbenzidine (TMB) to its blue product (oxidized TMB) with H2O2. The enhancement of the absorbance intensity of oxidized TMB at 650 nm showed a good linear relationship with the addition of melamine ranging from 4.7 nM to 29.7 μM. And the detection limit for melamine was as low as 1.2 nM, which was far below the safety limits of melamine ingestion (20 mM in the USA and EU; 8 mM in infant formula in China). Control experiments suggested that the enhancement in the peroxidase-like activity of aggregation for Cu2−xSe@PSS in comparison to its disperse nanoparticles resulted from the ˙OH or O2˙− radical generated.
研究领域:
分析化学
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食品安全
·
纳米生物学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sensors
·
2022
·
IF 9.618
Leilei Sun,Sisi Shi,Zeming Wu,Yao Huang,Chenhui Ji,Craig A. Grimes,Xinxin Feng,Qingyun Cai
A material system enabling specific NIR-II fluorescence imaging of Gram-positive bacteria is described. The material system is based on the electrostatic binding of Cu2–xSe and vancomycin-modified NaGdF4:Nd,Yb@NaGdF4 downconversion nanoparticles (DCNPs), the fluorescence of which is weak owing to the spectral overlap of Cu2–xSe absorption with the DCNP NIR emission. The presence of Gram-positive bacteria precisely disconnects the bond between vancomycin-modified DCNPs and Cu2–xSe, thus enabling a strong fluorescent signal. In vivo studies show that the material system can be specifically activated at the site of Gram-positive bacterial infection but is essentially nonfluorescent in the area of Gram-negative bacterial infection.
研究领域:
生物医学工程
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材料科学
·
感染性疾病研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Analytical Methods
·
2019
·Vol. 11
·期 34
·4376-4381
·
IF 2.378
Hong Yan Zou,Fang Fang Zhang,Qing Juan Guo,Tong Yang,Cheng Zhi Huang
The sensitive and rapid quantification of lysozymes (Lys) is a critical goal in clinical practice. Herein, a novel, label-free and sensitive turn ON–OFF chemiluminescent (CL) probe for Lys was developed based on modulating the biocatalytic ability of the Cu2−xSe nanoparticles. The synthesized Cu2−xSe nanoparticles could significantly enhance the chemiluminescence signal of the luminol–H2O2 system owing to their high copper deficiency, where a very bright blue CL emission was directly observed by the naked eye in darkness and it could last for a long period of up to 36 minutes. However, Lys could induce the aggregation of the Cu2−xSe nanoparticles due to the electrostatic attraction, which could be monitored by SEM and dark-field imaging. The aggregated Cu2−xSe nanoparticles with lower copper deficiency density could suppress their catalytic ability and turn off the chemiluminescence of luminol–H2O2. The established ON–OFF CL strategy exhibited a selective response to protein Lys and showed a quantitative relationship between the changes in the CL signals and the concentration of Lys over a wide range of 0.5–5000 ng mL−1, with a low detection limit of 0.36 ng mL−1. This study provides a promising strategy for detecting biomolecules by exploiting their specific interactions with nanomaterials.
研究领域:
分析化学
·
生物医学
·
纳米材料科学
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2017
·Vol. 10
·期 7
·3130-3143
·
IF 7.367
Shaohua Zhang,Qian Huang,Lijuan Zhang,Hao Zhang,Yaobao Han,Qiao Sun,Zhenxiang Cheng,Huizhu Qin,Shixue Dou,Zhen Li
The vacancies in the semiconductor nanocrystals not only induce unique properties, but also provide spaces for engineering them with multifunctions by the introduction of other elements. Herein, the vacancy of Cu2−xSe nanoparticles was tuned by doping with magnetic ferric ions (Fe3+) at room temperature, and the position and intensity of the near-infrared localized surface plasmon resonance (LSPR) in the resultant nanostructure can be finely controlled by altering the feeding amount of Fe3+ ions. The results of the density-functional theory (DFT) calculations show that both doping and replacement reactions are favourable. Owing to its tunable near-infrared absorption and magnetic property, the obtained hybrid nanostructure was demonstrated to be a novel nanotheranostic agent for effective deep-tissue photoacoustic imaging, magnetic resonance imaging, and photothermal therapy of cancer.
研究领域:
材料科学
·
生物医学工程
·
肿瘤学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2016
·Vol. 40
·期 7
·6315-6324
·
IF 3.277
Qiang Wang,Wen Long Li,Hong Yan Zou,Hui Liu,Cheng Zhi Huang
Carbon nanotubes (CNTs) are well known as photo-thermal agents for the ablation of tumor cells, but are limited in the application of photo-thermal therapy (PTT) owing to their low molar extinctions. By coupling the photo-thermal effects of CNTs and the intense localized surface plasmon resonance (LSPR) in the near-infrared (NIR) region of Cu2−xSe nanoparticles (NPs), herein we developed a highly efficient PTT nanohybrids agent by in situ growth of Cu2−xSe NPs on the acid-functionalized CNTs at room temperature. The as-prepared Cu2−xSe/CNT nanohybrids have been found to have intense LSPR in the NIR region and good photo-thermal conversion properties. Moreover, possessing good biocompatibility and dispersibility, the nanohybrids could easily be internalized by cancer cells, and show smart photo-thermal performance, properties which were then successfully applied for photo-thermal therapy in vitro, indicating that the Cu2−xSe/CNT nanohybrids could be a potential photo-thermal therapy agent for the ablation of tumor cells.
研究领域:
生物医学工程
·
纳米医学
·
肿瘤学
✓ 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）