CATALYSIS COMMUNICATIONS
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2013
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IF 2.915
Bin Zeng,Xiaohua Chen,Xutao Ning,Chuansheng Chen,Aiping Hu,Weina Deng
Carbon nanotubes and reduced graphene oxides (CNTs/rGO) sphere decorated with Cu 2 O, CuO nanoparticles (Cu x O–CNTs/rGO) was successfully synthesized by spray drying and post-calcinating method for the first time. Scanning electron microscopy and transmission electron microscopy observations confirmed that CNTs/rGO formed a spherical micrometer structure and Cu x O nanoparticles were decorated on their surface. The experimental results indicated that this novel architecture enhanced photocatalytic performance with 97.5% decomposition of methyl orange (MO) after 20 min in the presence of H 2 O 2 under visible light irradiation, which was much higher than that of pure Cu x O powders (31.2%).
研究领域:
材料科学
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纳米科技
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光催化
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环境功能材料
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复合材料
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2021
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IF 10.588
Xuefeng Liu,Shijie You,Nanqi Ren,Hao Zhou,Jinna Zhang
This study reports the development of complete solar-driven dual-photoelectrode fuel cell (PFC) based on WO 3 photoanode and Cu 2 O photocathode with peroxymonosulfate (PMS) serving as cathodic electron acceptor . As indicated by photoelectrochemical measurements, the PMS was able to improve thermodynamic properties of photocathode, achieving an increased open circuit potential from 0.42 V to 0.65 V vs standard hydrogen electrode (SHE). Under simulated sunlight irradiation (~100 mW cm −2 ), the maximum power density of 0.12 mW cm −2 could be obtained at current density of 0.34 mA cm −2 , which was 8.57 times of that produced by PFC without PMS (0.014 mW cm −2 ). Correspondingly, adding PMS (1.0 mM) increased overall removal efficiency of 4-chlorophenol (4-CP) from 39.8% to 96.8%, accounting for the first-order kinetic constant ( k =0.056 min −1 ) being 6.67 times of that in the absence of PMS ( k =0.0084 min −1 ). Radical quenching and electron spin-resonance (ESR) results suggested the contribution of free radicals (•OH and SO 4 •- ) and non-radical pathway associated with direct activation of PMS by Cu 2 O photocathode. Fourier transformed infrared (FTIR) analysis confirmed the strong non-radical interaction between Cu 2 O photocathode and PMS, resulting in 4-CP removal via activation of PMS by surface complex on Cu 2 O. The proof-in-concept complete solar-driven dual-photoelectrode fuel cell may offer an effective manner to realize water purification and power generation, making wastewater treatment more economical and more sustainable.
研究领域:
环境科学
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光催化
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能源材料
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电化学
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水处理技术
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可持续能源
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DOI
高影响因子
ANALYTICAL BIOCHEMISTRY
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2015
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IF 2.219
Taotao Feng,Xiaoyu Chen,Xiuwen Qiao,Zhao Sun,Haining Wang,Yu Qi,Chenglin Hong
In this work, a simple electrochemical immunosensor was developed for the detection of carcinoembryonic antigen (CEA) based on rhombic dodecahedral Cu 2 O nanocrystals–graphene oxide–gold nanoparticles (rCu 2 O–GO–AuNPs). GO as the template and surfactant resulting in rCu 2 O exhibit improved rhombic dodecahedral structure uniformity and excellent electrochemical performance. Moreover, GO was found to be able to effectively improve the long stability of rCu 2 O on the electrode response . Under optimal conditions, the immunosensor showed a low limit of detection (0.004 ng ml −1 ) and a large linear range (0.01–120 ng ml −1 ). This work presents a potential alternative for the diagnostic applications of GO-supported special morphology materials in biomedicine and biosensors.
研究领域:
生物医学工程
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肿瘤学
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纳米医学
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电化学分析
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诊断学
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生物传感器
✓ 已验证
DOI
高影响因子
CHEMOSPHERE
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2020
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IF 5.778
Kexin Chen,Xi Wang,Pengfei Xia,Jinxin Xie,Jing Wang,Xukai Li,Yiming Tang,Laisheng Li
Z-scheme Cu 2 O-(rGO-TiO 2 ) photocatalyst was successfully synthesized via a simple three-step approach for 2,2′,4,4′-tretrabromodiphenyl ether (BDE47) reductive removal under simulated solar irradiation. Unlike the traditional heterojunction , the addition of reduced graphene oxide (rGO) enhanced the redox ability of Cu 2 O-TiO 2 by increasing charge transfer. When modifying Cu 2 O films by adding 1% rGO and coating with 70% TiO 2 , the resulting Cu 2 O-(rGO-TiO 2 ) exhibited the best photocatalytic activity for BDE47 removal. The charge transfers of Cu 2 O-(rGO-TiO 2 ) were proven to follow a Z-scheme pathway through the electron paramagnetic resonance analysis. The degradation pathways of BDE47 were elucidated by identifying intermediate products via gas chromatography-mass spectrometry (GC-MS) and gas chromatography (GC). Photo-electrons (e − ) generated from the conduction band of Cu 2 O and hydrogen protons (H 0 ) reduced from H + in water were the main contributing elements for the removal of BDE47, which response to the ortho and para debromination . Ortho-Br of BDE47 was attacked by e − and BDE28 was the dominant debromination product on the first stage. Then e − and H 0 attacked ortho-Br and para-Br of BDE28 to form BDE15 and BDE8, respectively. The concentration of BDE8 was higher than that of BDE15, suggesting that H 0 played the most important role on the second debromination stage. An effective Cu 2 O-(rGO-TiO 2 )-based Z-scheme system for BDE47 debromination was proposed in this study, which may contribute to the development of novel green technologies.
研究领域:
环境科学
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光催化化学
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环境污染与控制
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材料科学
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绿色技术
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有机污染物降解
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DOI
高影响因子
ACS Nano
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2026
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IF 17.3
Jinzhe Liang,Xianliu Luo,Ya-Qian Shi,Liang-Mei Yang,Caiying Li,Lixian Huang,Yuzhen Ma,Yong Huang,Shulin Zhao
Controlling ferroptosis through material redox dynamics represents a frontier in the field of catalytic nanomedicine. Here, we introduce nonstoichiometric bismuth ferrite (BiFeO3–x) as an H2S-activable semiconductor that couples oxygen-vacancy-enabled charge modulation with endogenous sulfur chemistry to achieve spatiotemporally controlled immunogenic ferroptosis. Upon exposure to tumor-enriched gasotransmitter H2S, BiFeO3–x undergoes a transformation into Bi2S3 while releasing Fe2+ ions to trigger Fenton-like lipid peroxidation. The material’s mixed-valence Fe redox pair amplifies reactive oxygen species generation under 808 nm excitation, coupling photothermal energy dissipation with catalytic ferroptotic stress. Biologically, this multiresponse process initiates mitochondrial collapse, glutathione peroxidase 4 depletion, and lipid peroxide accumulation, driving apoptosis–ferroptosis cascades. In vivo, photoacoustic-guided therapy and mass cytometry profiling reveal profound immune remodeling, such as dendritic cell maturation, CD8+ T cell infiltration, and M1 macrophage polarization, implying the conversion of “cold” colorectal tumors into immunogenic tumor microenvironments. This work establishes a defect-chemistry-oriented design framework for engineering redox-programmable nano semiconductors that translate lattice instability into biological selectivity, bridging ferroelectric materials science and immune oncology.
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产品关联
DOI
PubMed
高影响因子
Joule
·
2026
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IF 37.1
Shu Yuan,Lizhen Wu,Rongyi Wang,Rui Xue,Fangyuan Li,Huiyuan Li,Guiru Zhang,Peng Shen,Zhiming Bao,Congfan Zhao,Qing Wang,Jiewei Yin,Liuxuan Luo,Shuiyun Shen,Liang An,Xiaohui Yan,Junliang Zhang
Industrial implementation of electrochemical CO 2 reduction requires maximizing both throughput and durability. While conventional rib-channel flow fields are the current standard, further elevating their performance is constrained by the inherent trade-offs involving CO 2 transport, water management, and salt precipitation behavior. To overcome these coupled challenges, we introduce a 3D foam flow field architecture. This design utilizes an interconnected porous structure to provide moderate convective transport, effectively mitigating local CO 2 starvation and enabling effective passive water management. Consequently, we achieve a CO Faradaic efficiency of 90% at an industrially relevant current density of 1,000 mA cm −2 . The optimized transport yields a high CO product concentration of 74 vol % and increases single-pass conversion to 43%. The device also demonstrates superior stability with a degradation rate only 1/14 of the baseline design, maintaining performance for over 400 h. This highlights that advanced flow field engineering is essential for unlocking industrial-scale CO 2 electrolysis.
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Qiuyu Chen,Jin Liu,Bo Zhao,Xiaoyan Meng,Yu He,Zian Lin
A stable Cu-based MCOFs with outstanding laccase-mimicking nanozyme activity was synthesized. • Steady-state kinetic assays verify the superior substrate affinity and faster catalytic rate of Cu₃-TAPT COF. • A two signal-reading-mode colorimetric sensor was constructed for detection of Cr 3+ and Al 3+ . • The sensing platform can be successfully applied for real water samples. Cr 3+ and Al 3+ are toxic metal ions widely existing in environmental water, and traditional detection methods cannot meet the demand for on-site analysis. Metal covalent organic frameworks (MCOFs) are promising nanozyme candidates, which overcome the defects of conventional nanozymes by virtue of ordered structure, good stability and uniformly distributed active sites. In this study, Cu 3 -TAPT COF, a typical MCOF nanozyme with high stability and excellent laccase-mimicking activity was fabricated. Relying on the differential inhibitory effects of Cr 3+ and Al 3+ on its catalytic activity, an inhibition-based colorimetric platform was established for their separate detection. This sensing system integrates naked-eye visible color variation, quantitative absorbance signal at 510 nm, and smartphone image capture for portable on-site readout. The method validation results demonstrated that the limits of detection (LODs) were 0.30 μM for Cr 3+ and 0.22 μM for Al 3+ . The overall recoveries of all spiked groups for the two ions in three actual water samples (river water, seawater, and lake water) ranged from 93.41% to 109.8%. This work validates the great potential of laccase-mimicking MCOF nanozymes in environmental monitoring and sheds new light on the fabrication and practical exploitation of MCOF-derived nanozymes. Download: Download high-res image (116KB) Download: Download full-size image
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产品关联
DOI
高影响因子
Nature Communications
·
2026
·
IF 18.1
Jin Shanyuhan,Xu Daliang,Xu Peiwen,Yin Kangwei,Du Jiaxin,Chen Han,Fan Jinling,Liang Heng,Wu Zhongbiao,Wu Xuanhao
Electrochemical nitric oxide reduction (NORR) under industrially relevant dilute feeds is fundamentally limited by insufficient interfacial NO coverage and rapid loss of reactive intermediates. Here we introduce quantifiable nanoconfinement as a coverage-regulation strategy for NORR in the ppm regime. Hollow multishelled Cu 2 O nanoreactors are constructed as a model system, in which shell number defines confinement depth and progressively strengthens confinement by narrowing inter-shell cavities. Under a 1000 ppm NO feed, the three-shell catalyst achieves a Faradaic efficiency of 97.9% and a single-pass NO conversion of 97.3%, which is competitive with systems operating under NO-rich conditions. Finite-element simulations quantitatively show that multishell confinement nonlinearly amplifies intermediate enrichment, increasing local *H and *NH concentrations by over an order of magnitude relative to the single-shell structure while also enhancing local NO coverage. Coverage-dependent density functional theory and transition-state calculations reveal that the confinement-modulated coverage environment reshapes the NORR kinetic and thermodynamic landscape by rebalancing initial *NO hydrogenation and NH 3 desorption, defining a favorable coverage window that balances intermediate activation and product release. These findings establish nanoconfinement-enabled coverage engineering for electrocatalysis under dilute feeds.
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
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IF 8.2
Jinyun Liu,Jiamin Liu,Ting Zhou,Xiaofei Huang,Yajun Zhu,Haojun Xu,Tianli Han
Magnesium/lithium hybrid-ion batteries (MLHBs) are considered promising owing to their high theoretical capacity and good safety and a broad range of magnesium resources; however, nonideal cathode materials and electrolytes restrict their development. Here, a composite composed of NiS2 nanosheet-coated Cu2S (Cu2S@NiS2) cubes is developed as a cathode material, which improves conductivity and accommodates volume change, achieving high and stable electrochemical performances. Also, we develop a LiCl-introduced all-phenyl-complex electrolyte (APC-LiCl), exhibiting a wide electrochemical window, stable cycling properties, and enhanced Mg dissociation/deposition compared to LiBF4 or LiTFSI-induced APC systems. The constructed MLHB exhibits a high energy density of 330 Wh kg–1 on an active cathode material basis when cycling at 0.3 A g–1, a stable specific capacity of 215 mAh g–1 after 400 cycles at 0.5 A g–1, and excellent temperature tolerance and rate performance, enabling our findings to be broadly applied for developing emerging energy-storage systems.
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Jinghao Lu,Lili Yang,Chuanhui Zhang,Haijie Cao,Xingyun Li,Lianying Zhang,Chang Long,Xiu Song Zhao
Realizing the evolution of Cu valence state in the electrocatalytic CO 2 reduction reaction (eCO 2 RR) is crucial to maintain active sites, optimize reaction conditions and product selectivity and understand reaction mechanism and kinetics. In this context, we investigated the dynamic transition of Cu(II), Cu(I) and Cu(0) under the eCO 2 RR conditions and impact of such transition on reaction intermediate species and product selectivity. In situ surface-enhanced Raman spectroscopy and attenuated total reflectance-surface-enhanced infrared absorption spectroscopy results coupled with quantitative data collected from a flow cell show that Cu (I) species contributes to CO 2 activation, CO adsorption, and subsequent C–C coupling processes, while the initial adsorption of Cu (0) in CO 2 playing a crucial role. These findings clarify how the valance of Cu changes with applied cathodic potential and reaction time, thus offering guidelines on optimization of operating conditions during CO 2 electrolysis to maintain the active sites responsible for forming desirable products. These new understandings lay a solid ground for purposely designing Cu-based catalysts for improved performance in CO 2 electrolysis, significantly advancing our knowledge on the behavior of Cu-based electrocatalysts in CO 2 electrolysis.
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Chen Wang,Yunpeng Zou,Xiaohui Wu,Xiangling Zhang,Wenjiao Sang,Tao Zhou,Mingjie Huang
Realizing efficiently sustainable generation of singlet oxygen ( 1 O 2 ) in the O 2 activation-based systems is crucial, since 1 O 2 can oxidize many organic pollutants via a non-radical pathway that is preferable in complex water matrices e.g. saline wastewaters. In this study, a boosted strategy that introduced oxygen vacancies (OVs) and surface carboxyl groups (−COOH) onto electron-rich copper‑iron oxides, was proposed by a facile mechanochemical ball-milling process with citrate ligands (Cit). Notably, the resulting Cit@CuFe 2.5 O x catalyst enabled efficient O 2 activation via a selective non-radical pathway, achieving a standardized pseudo-first-order rate constant ( k obs ) of 0.073 min −1 ·g −1 for sulfamethoxazole (SMX) degradation, with over 90 % of the oxidative contribution attributed to 1 O 2 . The ball-milling procedure with Cit could cause the generation of abundant OVs for O 2 adsorption and activation . Mechanistic analysis and theoretical calculations revealed that the OVs accelerated electron transfer from adjacent Cu(I) atoms to adsorbed O 2, facilitating the generation of O 2 − and markedly lowering the free energy barrier for its subsequent conversion to 1 O 2 other than H 2 O 2 . Additionally, the surface-bound −COOH groups facilitated the transformation of molecular O 2 to adsorbed O 2 at OVs sites, further lowering the thermodynamic barrier of the O 2 ⟶ O 2 − ⟶ 1 O 2 pathway. This study provides a simple and cost-effective promotional strategy for O 2 activation by ball-milled electron-rich materials, offering an easily obtained method to induce 1 O 2 -dominated oxidation of recalcitrant organic pollutants in the treatment of high-salinity wastewater.
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Zijun Yi,Long Zhang,Asif Al Jaman,Hui Li,Fang Ding,Yingjie Cai,Xuehong Ren
The development of low-cost and environmentally friendly light-absorbing materials has emerged as important direction in photovoltaic (PV) technologies. Among these candidates, Cu 2 SnS 3 (CTS) material has attracted considerable interest due to the favorable band gap, strong absorption coefficient, and non-toxic elemental composition. However, the efficiency of CTS devices remains hindered by cation disorder, deep-level defects and poor film quality, indicating the need for green and controllable approaches capable of preparing high-performance CTS films. Based on this, this work developed a green mechanochemical wet ball milling strategy. By milling Cu 2 O and SnO in a deionized water/isopropanol (IPA) medium, a uniform precursor dispersion was obtained, enabling the formation of dense CTS absorber layers through spin coating followed by sulfurization. To further tune the local chemical environment, a small amount of TiO 2 was incorporated to partially replace SnO. Benefiting from the similar ionic radii and valence states of Ti 4 + and Sn 4+ , the isovalent substitution effectively adjusted the local coordination structure and reduced Sn-related deep-level defects. The optimized device delivered a marked improvement in photoelectric conversion efficiency (PCE), increasing from 4.68 % to 6.29 %, along with an open-circuit voltage ( V OC ) of 0.47 V that ranked among the highest values reported for CTS-based solar cells. This work demonstrated the effectiveness of mechanochemical methods combined with cation regulation in improving the quality and performance of CTS films, providing an effective pathway for developing green and sustainable thin-film solar cells.
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DOI
高影响因子
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