SEPARATION AND PURIFICATION TECHNOLOGY
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2021
·
IF 7.312
Chan Zhou,Lei Zhu,Lin Deng,Haojie Zhang,Hanxuan Zeng,Zhou Shi
For improving the catalytic activity and recyclability of CuS in Fenton-like reaction processes, novel sulfur vacancies-enriched CuS@MIL-101(Fe) was constructed, characterized, and examined as heterogeneous catalysts for activating peroxymonosulfate (PMS) to degrade coumarin (COU). Thanks to the redox pairs of Fe 3+ /Fe 2+ , Cu + /Cu 2+ , S 2− /S 2 2− /S 0 /sulfate species, copper-iron synergistic effect and sulfur vacancies, the CuS@MIL-101(Fe) realized a complete removal of COU (30 μM) in 10 min with reaction rate constant of 0.577 min −1 , which was 11.1 and 17.0 times of CuS and MIL-101(Fe), respectively. The effect of various experimental conditions (i.e., initial pH, CuS@MIL-101(Fe) dosage, PMS concentration, and background anions) on COU degradation was discussed, and the stability and versatility of CuS@MIL-101(Fe) was studied as well. Radical scavenging experiments and electron paramagnetic resonance (EPR) spectroscopy identified • OH and 1 O 2 as the main reactive oxygen species (ROS). Finally, the possible mechanism of higher COU degradation efficiency in the CuS@MIL-101(Fe) activated PMS system and the degradation pathways were also deeply explored. Consequently, this work provided a novel insight into construction of sulfur vacancies-enriched heterogeneous catalysts for efficiently activating PMS for refractory organic pollutants elimination.
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JOURNAL OF MATERIALS RESEARCH
·
2020
·Vol. 35
·期 16
·2126-2137
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IF 2.502
Xiaoyue Fan,Xiaolin Qiu,Lixin Lu,Binglin Zhou
To advance the utilization of solar thermal energy, a novel solar-driven microcapsule was designed by the combination of high-performance CuS nanoconverter and the microencapsulated n-Eicosane with a brookite TiO2 shell via in situ sol–gel method. The resultant n-Eicosane@TiO2/CuS microcapsules possessed excellent thermal properties with high latent heat density (171.7 J/g), high encapsulation efficiency (71.7%), and increased thermal conductivity (0.730 W/(m K)). SEM analysis clearly verified that CuS nanoparticles exhibited a uniform distribution on the surfaces. Most of all, the addition of CuS not only enlarged the absorption spectra from the UV to the visible and NIR region but also achieved high solar-to-thermal conversion efficiency (94.41%). Due to the high heat storage capability and solar irradiation utilization efficiency, this solar-driven microcapsule possesses great potential for the solar energy utilization.
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JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2019
·Vol. 95
·期 3
·665-674
·
IF 2.659
Yating Liu,Ming Li,Qingyan Zhang,Picai Qin,Xiandong Wang,Guannan He,Ling Li
BACKGROUND The photocatalytic activity of a pristine semiconductor is unsatisfactory due to the rapid recombination of photogenerated electrons and holes. Constructing composite photocatalysts has proven to be an effective method to suppress electron–hole recombination. The composites composed of two materials usually are synthesized through a two-step process. However, in this work, a simple one-step solvothermal method employing an homogeneous reaction system was adopted to synthesize a tungsten trioxide (WO 3 )-copper sulfide (CuS) nanosheet heterojunction with enhanced photocatalytic properties. RESULTS The formation of the WO 3 -CuS heterojunction was confirmed by X-ray diffraction, transmission electron microscopy, energy-dispersive X-ray and X-ray photoelectron spectroscopy analysis. The composites showed improved visible light harvesting ability, and enhanced photoelectric and photocatalytic properties compared with pure WO 3 . The optimized composite displayed a photocurrent almost five-fold greater than the sum of the photocurrents of WO 3 and CuS, and had superior performance for methylene blue (MB) degradation and hexavalent chromium [Cr(VI)] reduction. The MB degradation and Cr(VI) reduction efficiencies were both improved when they co-existed in the photocatalytic system. Interferential ions Cl − and NO 3 − were much less effective in the degradation of MB than in the reduction of Cr(VI). CONCLUSIONS Improved photocatalytic activity was achieved after coupling CuS with WO 3 , due to the enhanced visible light absorption and efficient electron–hole separation. Photogenerated holes were found to be the dominant reactive species in the MB photodegradation process. A synergistic effect existed between MB degradation and Cr(VI) reduction. Interferential ions Cl − and NO 3 − had much greater effect on Cr(VI) reduction than MB degradation. © 2019 Society of Chemical Industry
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2018
·Vol. 410
·期 20
·4805-4813
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IF 3.307
Wang Yanying,Liu Yaqin,Ding Fang,Zhu Xiaoyan,Yang Li,Zou Ping,Rao Hanbing,Zhao Qingbiao,Wang Xianxiang
In this study, we developed a simple colorimetric approach to detect glutathione (GSH). The proposed approach is based on the ability of CuS-PDA-Au composite material to catalytically oxidize 3,3′,5,5′-tetramethylbenzidine (TMB) to ox-TMB to induce a blue color with an absorption peak centered at 652 nm. However, the introduction of GSH can result in a decrease in oxidized TMB; similarly, it can combine with Au nanoparticles (Au NPs) on the surface of CuS-PDA-Au composite material. Both approaches can result in a fading blue color and a reduction of the absorbance at 652 nm. Based on this above, we proposed a technique to detect GSH quantitatively and qualitatively through UV-Vis spectroscopy and naked eye, respectively. This approach demonstrates a low detection limit of 0.42 μM with a broad detection range of 5 × 10 −7 –1 × 10 −4 M with the assistance of UV-Vis spectroscopy. More importantly, this approach is convenient and rapid. This method was successfully applied to GSH detection in human serum and cell lines.
A colorimetric approach has been developed by exploiting the peroxidase-like activity of CuS-polydopamine-Au composite for sensitive glutathione detection.
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高影响因子
RSC Advances
·
2018
·Vol. 8
·期 31
·17489-17496
·
IF 2.936
Xiaodong Sun,Mingxu Sui,Guangzhen Cui,Ling Li,Xiaopeng Li,Xuliang Lv,Fan Wu,Guangxin Gu
Electromagnetic irradiation has caused environmental pollution and harmful effects on human health. The use of effective materials to attenuate electromagnetic energy is urgently required. In this study, Fe3O4 nanoparticles (NPs) decorated on a CuS platelet-based sphere (CuS/Fe3O4) with popcorn chicken-like micromorphology were synthesized through a solvothermal deposition method. The effects of reaction temperature and quantity of Fe3O4 NPs on the heterostructures, morphologies and electromagnetic absorption (EA) properties of the heterostructures were investigated. CuS/Fe3O4 heterostructures exhibited remarkable enhancement in comparison with pure Fe3O4 NPs and the CuS platelet-based sphere. With the contribution from dielectric and magnetic losses, a CuS/Fe3O4 heterostructure-loaded composite could achieve a minimum reflection loss (RL) of −61.32 dB at 14.00 GHz and an effective EA bandwidth (≤−10 dB) of 4.15 GHz at a thickness of only 1.5 mm simultaneously. The current study indicates that the CuS/Fe3O4 heterostructures can potentially be applied as advanced electromagnetic absorbers.
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Journal of Materials Chemistry C
·
2025
·
IF 5.1
Yao Zhong,Xiaolei Li,Li Ye,Pengcheng Zhu,Lin Zhuang
Anisotropic gold nanostars are near-infrared (NIR) absorbing photosensitizers applied in photothermal therapy (PTT) and photodynamic therapy (PDT). However, the thermodynamic instability of the gold nanostars leading to passivation limits their anti-tumor efficacy in addressing spreading and metastatic tumors. Herein gold star@PB@CuS (GPC) nanoparticles with a core–shell structure were designed and fabricated to address the shortcomings above and achieve multimodal anti-tumor treatment. GPC exhibits a broader absorption peak (810 nm) at the near-infrared region (NIR) through the synergistic effect, achieving excellent photothermal conversion efficiency and stability along with stronger photoacoustic (PA) imaging. The high tunable plasmon resonances of gold nanostars enable them to optimize the localized surface plasmon resonance (LSPR) effect through adjustments in their shape and size. This ensures that the laser wavelengths used for PTT and PDT processes of GPC are coherent at 808 nm (in the so-called “first bio-window”), without significant passivation. Simultaneously, we found that GPC further introduced chemodynamic therapy (CDT) by enabling glutathione (GSH) depletion, Fenton-like reactions, and self-supplied O2 to assist type-I PDT breaking in hypoxia and over expressed the GSH tumor microenvironment (TME). The endogenous and exogenous triggered nanotherapeutic platform PTT/PDT/CDT enables a complete ablation of 4T1 tumors within the first bio-window, showcasing enhanced photo-therapeutic efficacy and addressing critical challenges in current anti-tumor strategies.
研究领域:
纳米医学
·
肿瘤学
·
生物医学工程
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Small
·
2026
·
IF 11.8
Qian An,Shengze Su,Yicheng Wang,Yi Zhang,Xingcan Li,Tao Liang,Hongping Deng,Xiaoxing Xiong,Yanying Wang,Wing-Leung Wong,Chunya Li,Youjia Tang
Conventional “always-on” phototherapies often suffer from insufficient tumor selectivity and suboptimal utilization of reactive oxygen species (ROS) and photothermal therapy, limiting their clinical efficacy. Herein, a novel activatable, single-component theranostic system was developed for overcoming these limitations via tumor microenvironment-triggered dual-modal phototherapy. A heptamethine cyanine-based photosensitizer, Cu-Icy-H 2 S, was rationally designed by integrating an iodo-substituted cyanine fluorophore with a Cu 2 + –cyclen complex. This molecule remains photoinactive under physiological conditions but undergoes rapid activation in the presence of elevated hydrogen sulfide (H 2 S), a tumor-associated biomarker. The H 2 S-mediated reaction triggers in situ formation of CuS nanoparticles and simultaneously liberates a photoactive cyanine derivative (Icy-H 2 S). This dual transformation enables concurrent photodynamic therapy (PDT) through ROS generation and photothermal therapy (PTT) via CuS-mediated heat production under near-infrared (NIR) irradiation. Moreover, the fluorescence of Icy-H 2 S facilitates real-time NIR imaging, allowing precise tumor localization and therapy guidance. In vivo studies in 4T1 tumor-bearing mice demonstrated significant tumor inhibition with minimal systemic toxicity, confirming the potent synergistic efficacy of the PDT-PTT combination strategy. This work introduces a reasonable design for H 2 S-responsive, single-component theranostic agents and addresses the intrinsic photothermal instability of cyanine dyes by leveraging in situ CuS nanoparticle formation for enhanced photothermal conversion.
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高影响因子
LANGMUIR
·
2025
·
IF 3.9
Yunpeng Liu,Enyu He,Sanjay S. Latthe,Rajaram S. Sutar,Ruimin Xing,Renbao Zhao,Xuesong Huang,Shanhu Liu
Crude oil spills pose serious challenges due to low fluidity and high viscosity. Researchers are exploring a range of sustainable cleanup solutions, such as using heating components to reduce oil viscosity. Herein, an electroless plating technique was adopted for depositing copper sulfide (CuS) on a polyurethane (PU) sponge by a coordination strategy. Subsequently, a layer of octadecyltrichlorosilane (OTS) was deposited to enhance the surface oil absorption ability. The PU@OTS-CuS sponge has demonstrated superhydrophobicity and remarkable oil absorption capability ranging from 11.5 to 47 g/g for oils with diverse viscosities. Moreover, it has sustained its 22.5 g/g oil absorption capacity for lubricant oils and separation efficiency of over 97% for the n-hexane and dichloromethane–water mixture even after undergoing 10 cycles. The surface temperature of the modified sponge was increased to 74 °C within 180 s under 1 sun irradiation and a sustained crude oil absorption capacity of 20 g/g even after 10 cycles. In continuous crude oil remediation, the modified sponge collected 3.257 g within 15 min at a rate of 0.542 g/min. Additionally, the modified sponge revealed superior stability against immersion in seawater and different pH solutions, exposure to UV light, sand abrasion, mechanical compression, and cyclic photothermal performance. This research presents a new strategy for depositing a photothermal component on sponge surfaces to improve crude oil cleanup.
研究领域:
材料科学
·
环境科学
·
能源工程
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高影响因子
BIOSENSORS & BIOELECTRONICS
·
2018
·
IF 8.173
Xiaojian Li,Peng Lu,Bin Wu,Yaoguang Wang,Huan Wang,Bin Du,Xuehui Pang,Qin Wei
A novel electrochemiluminescence (ECL) signal-off strategy based on CuS in situ grown on reduced graphene oxide (CuS-rGO) quenching luminol/H 2 O 2 system was firstly proposed. Luminol was grafted on the surface of Au@Fe 3 O 4 -Cu 3 (PO 4 ) 2 nanoflowers (Luminol-Au@Fe 3 O 4 -Cu 3 (PO 4 ) 2 ) which exhibited excellent catalytic effect towards the reduction of H 2 O 2 to enhance the ECL intensity of luminol. Cu 3 (PO 4 ) 2 nanoflowers showed large surface area which can immobilize more Fe 3 O 4 and Au nanoparticles . The quenching mechanism of CuS-rGO was due to ECL resonance energy transfer (RET). The spectral overlap between fluorescence spectrum of Luminol-Au@Fe 3 O 4 -Cu 3 (PO 4 ) 2 and UV–vis absorption spectrum of CuS-rGO revealed that resonance energy transfer was possible. Au nanoparticles were immobilized on the surface of CuS-rGO to capture secondary antibodies. After a sandwich-type immunoreaction, a remarkable decrease of ECL signal was observed. Under the optimal conditions, the immunosensor showed excellent performance for N-terminal pro-brain natriuretic peptide (NT-proBNP) detection with a wide detection range from 0.5 pg mL −1 to 20 ng mL −1 and a low detection limit of 0.12 pg mL −1 (S/N = 3). The prepared NT-proBNP immunosensor displayed high sensitivity, excellent stability and good specificity.
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SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2018
·
IF 5.018
Zijie Xu,Teng Li,Qian Liu,Fayin Zhang,Xiaodan Hong,Shuyao Xie,Changxu Lin,Xiangyang Liu,Wenxi Guo
Here we present a highly flexible and large-area CuS transparent conductive film (TCF) fabricated by colloidal crackle pattern as a counter electrode (CE) for flexible dye sensitized solar cell (DSSC). This rectangular CuS TCF can be fabricated on arbitrary flexible substrates at low temperature and exhibits superior mechanical robustness in bending cycling measurement. The transmittance and conductivity can be accurately controlled by controlling the sizes and shapes of the crackle patterns, ~ 90% transmittance can be achieved when the sheet resistances (R s ) are ~ 60 Ω sq −1 . Moreover, such CuS TCF has strong receivable ability of pH (1−13) and temperature changes (0–100 °C). In the application of DSSC as CE, the cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) analyses of the CuS networks exhibit a comparable electrocatalytic behavior with the platinum (Pt) networks on polyethylene terephthalate (PET), yielding a power conversion efficiency (PCE) of 4.54% for DSSC based on CuS networks as CE and retaining > 90% PCE after 500 bending cycles. Such CuS TCF with high transparency, flexibility, conductivity and electrochemical catalytic ability shows great potentials in other wearable, light-weight electrochemical cells .
研究领域:
材料科学
·
光伏技术
·
纳米技术
·
柔性电子学
·
电化学
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高影响因子
LANGMUIR
·
2018
·
IF 3.789
Zequn Yang,Hailong Li,Shihao Feng,Pu Li,Chen Liao,Xi Liu,Jiexia Zhao,Jianping Yang,Po-Heng Lee,Kaimin Shih
Nanostructured copper sulfide synthesized with the assistance of surfactant with nanoscale particle size and high Brunauer–Emmett–Teller surface area was for the first time applied for the capture of elemental mercury (Hg0) from coal combustion flue gas. The optimal operation temperature of nano-CuS for Hg0 adsorption is 75 °C, which indicates that injection of the sorbent between the wet flue gas desulfurization and the wet electrostatic precipitator systems is feasible. This assures that the sorbent is free of the adverse influence of nitrogen oxides. Oxygen (O2) and sulfur dioxide exerted a slight influence on Hg0 adsorption over the nano-CuS. Water vapor was shown to moderately suppress Hg0 capture efficiency via competitive adsorption. The simulated adsorption capacities of nano-CuS for Hg0 under pure nitrogen (N2), N2 + 4% O2, and simulated flue gas reached 122.40, 112.06, and 89.43 mgHg0/g nano-CuS, respectively. Compared to those of traditional commercial activated carbons and metal sulfides, the simulated adsorption capacities of Hg0 over the nano-CuS are at least an order of magnitude higher. Moreover, with only 5 mg loaded in a fixed-bed reactor, the Hg0 adsorption rate reached 11.93–13.56 μg/g min over nano-CuS. This extremely speedy rate makes nano-CuS promising for a future sorbent injection technique. The anisotropic growth of nano-CuS was confirmed by X-ray diffraction analysis and provided a fundamental aspect for nano-CuS surface reconstruction and polysulfide formation. Further X-ray photoelectron spectroscopy and Hg0 temperature-programmed desorption tests showed that the active polysulfide, S–S dimers, and copper-terminated sites contributed primarily to the extremely high Hg0 adsorption capacity and rate. With these advantages, nano-CuS appears to be a highly promising alternative to traditional sorbents for Hg0 capture from coal combustion flue gas.
研究领域:
环境科学
·
材料科学
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Yuchun Li,Jiachen Liu,Tianle Gong,Changzhi Liang,Lin Li,Xuemei Lin,Zongrong Ying,Huangyan Liu
2D material MXene is one of the most interesting electrode materials due to its vast range of potential applications in electrochemical energy storage and conversion in recent years. Herein we fabricated a novel 2D MXene-based composite electrode material by using hydrothermally synthetized CuS and carbon dots (CDs) to synergistically decorate Ti 3 C 2 T x . The introduction of CuS and CDs increases the interlayer spacing of Ti 3 C 2 T x , which reduces the stacking of Ti 3 C 2 Tx unfavorable to the electrochemical performance. The optimal C-Ti 3 C 2 T x /CuS composite electrode has an excellent specific capacitance of 1186 F·g −1 at a current density of 1 A·g −1 , which is much higher than that of Ti 3 C 2 T x samples decorated with single CuS or with single CDs, illustrating that CuS and CDs have the outstanding synergistic improvement effect to MXene on the electrochemical performance. When the current density rises to 10 A·g −1 , the sample still maintains a capacitance of 907 F·g −1 , corresponding to a capacitance retention rate of 76.5%. After 1000 cycles at a current density of 1 A·g −1 , the capacitance remains 67% of the initial value. These demonstrate that the C-Ti 3 C 2 T x /CuS composite electrode material has a great promising practical potential in fabricating high-performance supercapacitors. The new finding about the outstanding synergistic effect of CDs and transition metal compounds on improving MXene’s electrochemical performance suggests a possible effective way for preparing the high-performance MXene-based electrode materials.
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