APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Ao Zhang,Zhongqing Jiang,Shaoda Zhang,Penghua Lan,Naihua Miao,Weiheng Chen,Ning Huang,Xiaoning Tian,Yangjie Liu,Zhongyu Cai
We report the development of non-noble transition metal sulfide catalysts Mn-CuS-x for high-efficiency and selective H 2 O 2 production. In this study, we synthesized Mn-CuS-x with coral-shaped hierarchical porous structure through one-pot hydrothermal reaction. The Mn-CuS-x possesses large specific surface area with plenty of crystalline defects via heteroatom doping of Mn. The Mn-CuS-x kinetically favored 2e − pathway over 4e − pathway, resulting in high selectivity (>92%) to H 2 O 2 production and high H 2 O 2 concentration (∼24.5 mM at 0.6 V vs. RHE) within 3 h for the optimized Mn-CuS-2 catalysts (synthesized with a molar ratio of 1:3:8 (MnCl 2 ·4 H 2 O: CuCl 2 ·2 H 2 O: C 2 H 5 NS)). The Mn-CuS-2 showed excellent stability, indicating that the Mn-CuS electrocatalysts can simultaneously achieve both high stability and enhanced H 2 O 2 production. Our first-principles calculations further confirmed that the heteroatom Mn doping to CuS thermodynamically makes the 2e – -ORR pathway more favorable. This study provides a green, low-cost, and efficient route to produce H 2 O 2 , which is very promising for generating chemicals and liquid fuels.
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Biomaterials Science
·
2023
·Vol. 11
·期 10
·3589-3602
·
IF 6.6
Bo Huang,Wei Guan,Chaofeng Wang,Shuilin Wu,Zhenduo Cui,Yufeng Zheng,Zhaoyang Li,Shengli Zhu,Hui Jiang,Paul K. Chu,Xiangmei Liu
Charge transfer and separation play a critical role in the photocatalytic efficiency of photoresponsive materials and their subsequent applications. Herein, for the first time, we constructed a homo-heterostructured S–Cu–FC/CuS modified carboxymethyl cellulose (CMC) hydrogel doped with graphene oxide (GO) (S–Cu–FC/CuS/GO@CMC) through an in situ ionic complexation reaction, which exhibited enhanced photocatalytic performance under 808 nm near-infrared (NIR) light irradiation. On the one hand, photo-excited charges can rapidly transfer across the homo-heterojunction interface with copper atoms in S–Cu–FC/CuS as both donors and acceptors. On the other hand, the interface between GO and S–Cu–FC/CuS also favors the fast transfer of photogenerated charges. Hence, with the assistance of a photothermal effect, the enhanced photocatalytic performance of S–Cu–FC/CuS/GO endowed the hydrogel with robust sterilization ability for killing 99.5% S. aureus and 100.0% E. coli under 10 min NIR light irradiation. An in vivo test disclosed that this hydrogel could also accelerate the healing of bacteria-infected wounds.
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高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 23
·4123
·
IF 5.719
Li Zhang,Linhong Ge,Lamei Deng,Xinman Tu
Herein, CuS was incorporated with ZnS to form a novel nanocomposite via cation exchange, and the product was then employed for dual application of the colorimetric determination and photocatalytic degradation of tetracycline (TC) in water. The formed p–n heterojunction provided an improved gap width and electron mobility, which could rapidly catalyze H2O2to produce plenty of •OH, supporting a color conversion with TMB. Meanwhile, the addition of TC could lead to the further enhancement in colorimetric signal, and the distinction level was sensitive to the target amount. Additionally, under light conditions, the p-CuS/n-ZnS could produce •O2−, •OH, and h+through photocatalysis, and these ions could degrade the TC via oxidation. In the colorimetric determination of TC, the signal responses were obtained within 10 min, and the detection limit was 20.94 nM. The recovery rates were 99% and 106% for the water samples from Ganjiang river. In the photocatalytic degradation, the TC was degraded by 91% within 120 min, which was threefold that of ZnS. Meanwhile, the morphology feature of the p-CuS/n-ZnS remained after multiple uses, suggesting a favorable material stability. This strategy provides application prospects for the monitoring and control of antibiotics in water.Keywords:p–n heterojunction;tetracycline;colorimetric determination;photocatalysis;degradation
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Nanomaterials
·
2022
·Vol. 12
·期 12
·2087
·
IF 5.719
Xinman Tu,Linhong Ge,Lamei Deng,Li Zhang
Metal sulfide is often utilized as a catalyzed material to form colorimetric response system for some heavy metal detection. While the aggregation effect and conventional morphology limited the catalyzed efficiency. Herein, a robust method based on morphology adjustment was proposed to improve the dispersibility and catalytic performance of CuS. The results demonstrated when the solvent ratio of ethylene glycol and dimethyl sulfoxide arrived at 3:1, it displayed an optimal structure which is like a patulous flower. Meanwhile, an optimal surface binding energy (ΔE) of 120.1 kcal/mol was obtained via theoretical calculation model. The flower-like structure caused a 2-fold increase in the catalytic level. Subsequently, the CuS was employed to make colorimetric detection of Cr(VI) in water. The assay results exhibited a linear range of the Cr(VI) from 60 to 340 nM, the limit of detection was 1.07 nM. In the practical tests for Qianhu lake water, the spiked recoveries were 93.6% and 104% with the RSD of 4.71% and 3.08%. Therefore, this CuS-based colorimetric method possesses a satisfactory application prospect for the Cr(VI) determination in water.Keywords:CuS;morphology adjustment;solvent ratio;Cr(VI);colorimetric detection
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ADVANCED FUNCTIONAL MATERIALS
·
2023
·
IF 19
Fangli Gao,Liang Zhu,Liting Jiang,Jie Zhang,Shenglu Ji,Weihua Gao,Guanglei Ma,Yi Chang,Xiaoming Ma,Yuming Guo
The efficient way to increase the therapeutic efficacy of nanomedicines is by encouraging the penetration and enhancing the retention of nanoparticles at the tumor site. However, it is a serious dilemma that small nanoparticles can penetrate deep into the tumor tissue but easily be cleared into the surrounding tissues. In order to solve this dilemma, a smart nanosystem is created to address this problem, ensuring both the effective penetration of tiny nanoparticles (NPs) and their appropriate retention at the tumor site. CuS NPs that is modified with peptides are prepared facilely, and can aggregate in situ through the intermolecular crosslinking reaction catalyzed by the transglutaminase (TGase) abundantly expressed at the tumor site, resulting in an outstanding photothermal effect for tumor therapy. Upon NIR irradiation, the photothermal effect of CuS-K and CuS-Q induced the disintegration of liposomes and prompted the release of CuS-K, CuS-Q, and indocyanine green (ICG). Simultaneously, CuS-K and CuS-Q aggregated under the catalysis of TGase after being internalized by tumor cells to enhance photothermal therapy. The current study provides valuable inspiration to design nanomedicines with prolonged circulation time in the blood system, better penetration, and retention at the tumor site, and multimodal tumor therapy to achieve the desired therapeutic efficacy.
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CHINESE CHEMICAL LETTERS
·
2023
·
IF 9.1
Yun Wei,Lei Zhou,Wenbin Hu,Liming Yang,Guang Yang,Chaoqiang Wang,Hui Shi,Fei Han,Yufa Feng,Xuan Ding,Penghui Shao,Xubiao Luo
The efficient and environmentally friendly recycling technology of waste residue that including abundant heavy metal produced during the recovery of lithium batteries has become a research hotspot. Herein, a novelty process of acid leaching-selective electrodeposition-deep impurity removal-regeneration was proposed to recovery of the CuS slag, which has been efficient transferred to high purity cathode copper and commercially available ternary precursors. Copper cathode with a purity of 99.67% was prepared under electrochemical reaction conditions at −0.55 V for 2 h. A novel impurity remover-Mn powder, which was used to remove the residual impurities and as a feedstock for the ternary precursor. Finally, NCM523 was regenerated by co-precipitation. The process is superior to the traditional process in economy, energy consumption, CO 2 emissions, product purity and process duration. This study provides a new approach for solid waste recovery and precious metal enrichment.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2021
·
IF 19.503
Yilei Li,Qing Zhao,Yang Zhang,Yunchao Li,Louzhen Fan,Fa-tang Li,Xiaohong Li
Photocatalysis has been facing challenging problems especially the inefficient photocarriers transfer at the interfaces. Here, based on K sp difference, we prepare the sequential heterojunction of CoS/CdS/CuS via sequential cation exchange strategy, and propose the concept of "electron-welcome zone", where the point-to-point contact can be formed at the interface, thus providing continuous electron transport channels. HAADF-STEM EDS line test indicates the formation of designed structures, and the p/n junction is confirmed by band structure and Mott-Schottky analysis. Theoretical calculation indicates that CoS reduces the Gibbs free energy of the reaction. TRPL spectra show that the existence of "electron welcome zone" greatly improves the lifetime of electrons. This sequential structure enable the optimal H 2 production rate to reach 123.2 mmol g −1 h −1 with AQE of 45.6%, which is among the highest values of CdS-based photocatalysts. This work opens new way to efficient photogenerated carrier transfer channel for solar-energy conversion.
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SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2021
·
IF 7.267
Xiaoyue Fan,Xiaolin Qiu,Lixin Lu,Binglin Zhou
Due to the low direct thermal effect of solar irradiation , conventional phase-change microcapsules have poor solar energy utilization capability. To increase the solar-to-thermal energy storage efficiency, in this work, we reported a light-driven microencapsulated n-eicosane based on a crystalline TiO 2 shell coated by graphene oxide (GO)-based copper monosulfide (CuS) (CuS-GO) nanoconverter. Due to the combination of local surface plasma resonance (LSPR), semiconductor and synergetic effects, the CuS-GO nanoconverter conferred full-spectrum solar light-to-thermal conversion capability on the microcapsule system. The resultant n-eicosane@TiO 2 @CuS-GO microcapsules achieved high full-spectrum solar-to-thermal storage efficiency (97.1%) under stimulated solar light with no compromise of the latent heat density (212.0 ± 1.2 J/g). Furthermore, the thermal conductivity of n-eicosane@TiO 2 @CuS-GO (0.985 ± 0.004 W/(m·K)) significantly increased by 39.9% compared with that of n-eicosane@TiO 2 . These results indicate that this light-driven microcapsule with superior properties is advantageous for direct solar-to-thermal energy utilization applications.
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CARBON
·
2021
·
IF 9.594
Xiang Zhang,Lei Cai,Zhen Xiang,Wei Lu
At present, the development of lightweight and wideband microwave absorbing materials with stable infrared stealth property and adaptable to complex environments has become the key to multi-modal stealth technology . Herein, hollow CuS microflowers were self-assembled on biomass-derived porous carbon in situ to realize the multifunctions of microwave absorption, flame retardance and thermal stealth. The multicomponent synergistic effect combined with unique microarchitecture triggered the multiple polarization effects , multiple reflection and scattering as well as conduction loss in the PC@CuS composite. As a result, the PC 800 @CuS sample exhibited an optimal RL min of −61.5 dB and an exceptionally wide EAB of 7.8 GHz with the filling ratio of only 10%. In addition, the PC@CuS composite also exhibited superior flame-retardant properties by virtue of its distinctive porous structure . Meanwhile, the uniform distribution of CuS particles played a vital role in enhancing the overall infrared absorption efficiency, thereby obtaining stable and highly-effective infrared stealth performance comparable to commercial products. This work shed light on the development of high-efficiency MAs with multifunctions in a facile and low-cost manner.
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Journal of Materials Chemistry B
·
2017
·Vol. 5
·期 48
·9487-9496
·
IF 4.543
Chen-Xi Huang,Hua-Jian Chen,Fei Li,Wan-Ni Wang,Dong-Dong Li,Xian-Zhu Yang,Zhao-Hua Miao,Zheng-Bao Zha,Yang Lu,Hai-Sheng Qian
Synergistic photodynamic and photothermal therapy of cancer cells is of considerable scientific and technological interest. In this work, we demonstrate a sacrificial template strategy to fabricate yolk–shell nanoparticles combining upconversion nanoparticles (UCNPs) and CuS nanoparticles. Lanthanide-doped upconversion nanoparticles of NaYF4:30% Yb,1% Nd,0.5% Er@NaYF4:20% Nd (also denoted as UCNPs) have been prepared as 808 nm light excited remote-controlled nanotransducers for in vitro cancer cell treatment. The upconversion fluorescence of the as-prepared UCNPs@CuS yolk–shell nanoparticles is completely quenched under the excitation of an 808 nm laser, which demonstrates that the energy transfer between the UCNPs and CuS is very efficient. In addition, the as-prepared UCNPs@CuS nanoparticles show higher production ability for hydroxyl radicals (˙OH) and singlet oxygen (1O2) compared to CuS hollow nanospheres of similar size. In particular, the excited shell layer (CuS) showed an enhanced photothermal effect while producing reactive oxygen species (ROS) including singlet oxygen (1O2) and hydroxyl radicals (˙OH) after being exposed to near infrared (NIR) light. Thus, the as-prepared UCNPs@CuS yolk–shell nanoparticles exhibited the synergistic effect of photothermal and photodynamic therapy of cancer cells, which resulted in significant cell death after exposure to an 808 nm laser. The synthetic strategy will provide an alternative method to fabricate other UCNP based core–shell nanoparticles for potential and important applications in bionanotechnology including theranostics, multimodal treatment, magnetic resonance imaging-guided photodynamic therapy, etc.
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高影响因子
DALTON TRANSACTIONS
·
2017
·Vol. 46
·期 7
·2204-2213
·
IF 4.029
Lanfang Ren,Xijian Liu,Qian Wang,Lijuan Zhang,Guoying Deng,Feng Zhou,Jie Lu
In this study, a multifunctional nano-drug (PTX-loaded Cys-Fe3O4/CuS@BSA nanocomposite), which performs well in hydrophobic drug delivery, magnetic resonance imaging (MRI) and chemo-photothermal combination therapy, has been successfully synthesized via a facile method with several biocompatible agents. The characterization verified that our as-obtained nanocarrier has a preferable average diameter of about 300 nm for cancer therapy, shows a great MRI ability and magnetism performance, and exhibits a favorable in vitro and in vivo photothermal therapeutic efficacy by introducing CuS, and the sustained release of chemotherapeutics could be controlled by pH value and near-infrared laser irradiation has further enhanced the therapeutic performance. Overall, the excellent synergistic effect to inhibit tumor growth effectively realized via imaging-guided combinational chemo-photothermal therapy in the present work, highlights the promise of conquering the limitations of tumor treatments.
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RSC Advances
·
2015
·Vol. 5
·期 23
·17458-17465
·
IF 3.84
Qun Wei Shu,Chun Mei Li,Peng Fei Gao,Ming Xuan Gao,Cheng Zhi Huang
CuS materials with peroxidase activity have been prepared but greatly limited by the large dosage and low peroxidase activity. In this paper, porous hollow CuS nanospheres with a variety of sizes were fabricated by one-pot method based on a facile template-assisted hydrothermal approach. The size of the porous hollow CuS nanospheres could be simply tuned by adjusting the molar ratios of reactants, the reaction temperature, and time. The as-prepared porous hollow CuS nanospheres were demonstrated to exhibit more prominent intrinsic peroxidase-like activity using TMB as a peroxidase substrate in the presence of hydrogen peroxide (H2O2). This is a significant comparison to previous reports, demonstrating that the new developed synthetic porous hollow CuS nanospheres can be a new kind of candidate for peroxidase mimics, and the nanospheres are promising for applications in biosensors, environmental monitoring, and so on.
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