Journal of Water Process Engineering
·
2024
·
IF 6.3
Meng Li,Weiji Sun,Wangkai Hui,Lang Liu
Photocatalytic oxidation technology is a green and low carbon approach for degradation of mineral processing wastewater, which is extensively applied to ecological environment restoration. In this research, coal gangue-ZnS/CuS pyroelectric/photothermal composite photocatalyst is constructed by high temperature calcination method. The temperature difference between heat converted from light energy absorbed by CuS and the circulating condensate water provides the impelling force for the pyroelectric effect. The porous structure of coal gangue acts as a “heat capacitor”, which furnishes greater temperature fluctuation for pyroelectric effect. Furthermore, the hydroxyl groups on the surface of coal gangue can availably adsorb oxygen and facilely form superoxide radicals with electrons. The degradation efficiency of xanthate is as high as 99.5 % within 50 min. This research has significant implications for designing and developing highly efficient photocatalysts for the degradation of mining wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2023
·
IF 13.3
Pengpeng Jia,Yu Zou,Jiang Jiang
Development of wound dressing with robust antibacterial and repair-promoting activity has always been an urgent biomedical task during the past years. The therapeutic effect of current hydrogel dressings containing single bioactive agent like nanoparticle or gas is still unsatisfactory for the treatment of infected wound. Herein, a CuS/NO co-loaded hydrogel (CuS/NO Gel) is proposed, which is constructed by sequential polymerization, reduction, and S-nitrosylation of CuS hybrid hydrogel with disulfide bonds. These CuS/NO Gel patches show good mechanical stability, high photothermal activity and excellent biocompatibility. When being applied to treat infected wound, CuS/NO Gel can not only eliminate infection effectively by the synergistic effect of mild photothermal heating and boosted NO release in infection phase, but also promote vascularization and collagen deposition due to the synchronous supply of Cu ion nutrients and low concentration NO signaling molecules in wound repair phase. Compared to hydrogel dressings with individual active agent (CuS Gel or NO Gel), CuS/NO Gel exhibits better antibacterial and repair-promoting activity both in vitro and in vivo. Therefore, this CuS/NO Gel holds great promise in the future clinical treatment against infected wound.
研究领域:
生物材料学
·
医学
·
药剂学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Biomedical Materials
·
2023
·Vol. 18
·期 6
·065006
·
IF 4
Jing Zhang,Miaomiao Hu,Changchun Wen,Jian Liu,Fang Yu,Juan Long,Xiang-Cheng Lin
Single tumor treatment method usually has some defects, which makes it difficult to achieve good therapeutic effect. The ingenious combination of multiple tumor treatment methods on a single nanoplatform to achieve multifunctional treatment can effectively improve the efficiency of treatment. The targeted modification of nanomaterials can augment the precision of nanotherapeutic drugs in tumor treatment. Herein, a multifunctional nanoplatform (CeO2@CuS@PDA-FA) based on cerium dioxide nanoparticles engineered with copper sulfide (CeO2@CuS) has been constructed for synergistic photothermal therapy (PTT) and chemodynamic therapy (CDT). The CeO2@CuS were coated using polydopamine (PDA), and the modification of PDA surface by folic acid, in order to achieve the targeted effect for tumors. The localized hyperthermia induced by PTT can further improve the CDT efficiency of the nanoplatform, leading to a PTT/CDT synergistic effect. The nanoplatform possessed the capability of cancer cell-targeted and achieved better therapeutic efficacy in vitro. This work provided a new strategy for combined multifunctional theranostic platform and shows strong potential in practical applications.
研究领域:
纳米医学
·
癌症治疗
·
生物材料
✓ 已验证
DOI
高影响因子
NANO
·
2020
·
IF 1.566
Yanqiu Zhao,Yang Zou,Xunxun Deng,Hanwen Wang,Shuo Wu
A multifunctional nanodrug, PAMAM@CuS-HA-RB/DOX, was prepared for the real time tracking and chemo-photothermal therapy of tumor cells. The CuS nanoclusters with diameter less than 10 nm could be easily ingested by tumor cells and showed good colloid stability and high photothermal conversion efficiency. The hyaluronic acid (HA) coating and rhodamine B (RB) labeling endowed the nanocomposite with low cytotoxity and real time fluorescence imaging ability. In the acidic tumor microenvironment, the doxorubicin linked via the pH-responsive hydrazone bonds was released and worked synergistically with CuS to kill the tumor cells, which showed a high chemo-photothermal therapy capacity. All these properties indicated the PAMAM@CuS-HA-RB/DOX have promising application for the therapy of cancers and tracking of nanodrugs.
研究领域:
生物医学工程
·
肿瘤学
·
纳米医学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Jiawei Long,Tianli Han,Mengfei Zhu,Xiaoyong Xu,Jinjin Li,Junjie Niu,Jinyun Liu
Lithium-sulfur battery cathodes still remain a challenge on capacity decay due to the shuttle effect even though a series of strategies have been tried. Here we report a novel matryoshka-like CuS@void@Co 3 O 4 architecture of double micro-cubes ( μ -cubes) that locks sulfur between the CuS core and the Co 3 O 4 shell. Plenty of existing spaces between the μ -cubes suffice a high loading of sulfur and volumetric accommodation. The robust, double closed cubes configuration greatly enhances the confinement of polysulfides . In parallel, the CuS core increases the electronic conductivity and contributes to additional capacity, while the Co 3 O 4 shell ensures a better interface activity. A high Li + ion diffusion coefficient is obtained during the sulfur and lithium sulfide transformation. The constructed battery displays an initial capacity up to 1480 mAh g −1 , and a Coulombic efficiency (CE) exceeding 99%. A capacity retention higher than 500 mAh g −1 with a CE larger than 99.8% after cycling 400 times at 0.2 C are achieved. In addition, under a temperature of −5 °C, a high capacity of 700 mAh g −1 at 0.2 C after 200 cycles is achieved, indicating a good low-temperature tolerance.
研究领域:
材料科学
·
电化学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Qi Wang,Yu Mei,Ruoxue Zhou,Sridhar Komarneni,Jianfeng Ma
The Ti 3 C 2 -based MXene with unique lamellar nanostructure and high conductivity is expected to effectively improve photocatalytic ability of composites as a cocatalyst. Herein, two dimensional Ti 3 C 2 -based MXene nanosheets decorated with copper sulfide particles (CuS@MXene) were synthesized by hydrothermal treatment to boost catalytic persulfate (PS) activation under light, exhibiting remarkable reactivity and stability for the rapid removal of Orange II. The phase composition of CuS@MXene was detected by X-ray diffraction (XRD), the morphology of CuS@MXene was characterized by scanning electron microscope (SEM), and the results of X-ray photoelectron spectroscopy (XPS) proved the elemental composition and valence state of elements in the CuS@MXene. The dosage of PS and initial pH of solution were the main factors affecting the removal rate of Orange II, and the quenching experiment showed that 1 O 2 was the primary reactive species for the removal of Orange II in CuS@MXene -PS system. In addition, this study showed that CuS@MXene provided bi-active centers for PS activation, which was mainly attributed to the rapid charge transfer between dual electron-rich active centers of Cu and Ti. This system may be applicable to the degradation of other challenging organic pollutants .
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Yuehu Wan,Shiwen Du,Congrong Lu,Kuankuan Ren,Biyun Shi,Shiyan Liu,Chunhe Li,Weidong Dou,Ping Fang,Na Ye
Visible-light-driven photocatalysis holds a broad prospect for alleviating the energy crises. Here we report novel CuS nanoparticles/CdS nanowires Schottky heterojunctions via a two-step hydrothermal synthesis and used for photocatalytic H 2 generation driven by visible-light (λ ≥ 420 nm). Compared with pure CdS NWs, the CuS/CdS nanocomposites show outstanding visible light H 2 evolution, with an optimal rate reaching 2076.5 μmol h −1 g −1 . The intrinsic properties of CuS/CdS nanocomposites, such as structure, optical properties , and combined configuration are systematically analyzed by experimental characterizations and theoretical calculations. The comprehensive results show that the Schottky junction between CuS NPs and CdS NWs accelerates photoinduced electron drift from semi-conductive CdS to metallic CuS, improving their activities of water splitting. This work offers a simple route to synthesize one-dimensional CdS-based nanocomposites for efficient visible-light driven energy conversion.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
SOLAR ENERGY
·
2018
·
IF 4.374
Xinzhi Wang,Yurong He,Yanwei Hu,Guangri Jin,Baocheng Jiang,Yimin Huang
Photocatalytic semiconductors have attracted much attention due to their effective harvesting of solar energy for chemical synthesis and wastewater treatment. In particular, 3D hierarchical CuS materials exhibit unique photocatalytic performance due to their distinctive optical properties and high specific surface areas. In the present work, a facile and template-free solvothermal method was applied to the synthesis of monodispersed and homogeneous 3D flower-like CuS superparticles. The prepared superparticles exhibit good photocatalytic properties for degrading organic pollutants (methylene blue) in water. Furthermore, the effect of photothermal conversion in enhancing the photocatalytic activity of this flower-like material was studied; this effect has not been considered in most of the previous work. The photodegradation rate was enhanced by ∼212.7% in the photothermal-assisted system. This result reveals that photothermal conversion in CuS particles plays an important role in engendering highly efficient photocatalytic activity and the efficient utilization of solar energy.
研究领域:
材料科学
·
环境科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Ya-li Yao,Jin-mei He,Xin Yang,Lei Peng,Xue-dan Zhu,Kan-she Li,Meng-nan Qu
Hydrogen production by electrochemical overall water splitting is an economic and green approach to resolve the looming energy and environmental crisis. However, the electrocatalytic oxygen evolution reaction (OER) generally occurs at low rate due to the delayed reaction kinetics of four-electron transfer. Herein, a kind of crater-like micro-nano structure CuS three-dimensional electrode that was supported on a Cu foam was prepared and used as an electrode anode for overall water splitting. The superhydrophilic/underwater superaerophobic structure can significantly reduce the bubble adhesion on the electrode surface and improve the OER performance. The CuS/CF electrode showed good wettability and superaerophobicity with an underwater contact angle of 153.5°. The CuS/CF (CuS/Cu foam) electrode has been proved to have excellent electrocatalytic activity for water decomposition. In 1.0 M KOH solution, the OER overpotential is 350 mV at 10 mA cm −2 and the Tafel slope is 83 mV dec −1 . In acidic medium of 0.5 M H 2 SO 4 solution, the overpotential of hydrogen evolution (HER) is 134 mV at 10 mA cm −2 and the Tafel slope is 114 mV dec −1 . The underwater superaerophobic electrode still has strong stability after 10 h test. This work provides a new potential electrochemical catalyzed approach to water decomposition by constructing a super-infiltration electrode.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Yuxuan Gao,Yafei Guo,Yekun Zou,Wenzhuo Liu,Yangna Luo,Bingqian Liu,Chuanwen Zhao
Copper-based catalysts have been recognized as promising candidates for electrochemical conversion of CO2 to value-added chemicals and synthetic fuels. Yet, the challenges of high overpotential and low product selectivity have motivated the rational electrode engineering. In the present work, we prepared CuS catalysts using different sulfur precursors, and we aimed to elucidate the precursor-dependent effect on their structure–property–activity relationships for electrochemical CO2 reduction. The different sulfur precursors exhibited varied S release rates in hydrothermal synthesis, which had induced distinct surface morphological features and diverse sulfur vacancy concentrations, and the intrinsic catalytic activity and product selectivity would be affected. The desired CuS-TU catalyst synthesized using thiourea as the sulfur precursor featured a flower-like morphology and had the highest sulfur vacancy concentration. The nanoflower morphology offered expanded space and considerable undercoordinated sites for facilitated interfacial mass transfer in electrochemical CO2 reduction. Density functional theory calculations confirmed that the abundant sulfur vacancy played an important role in strengthening the adsorption of the *COOH intermediates on the surface, which promoted CO production via the *COOH pathway. The CuS-TU catalyst therefore exhibited a relatively higher CO selectivity of 72.67% at −0.51 V vs RHE. These findings will provide more insights into improving the electrochemical CO2 reduction performance of copper-based catalysts by structure engineering.
研究领域:
材料科学
·
电化学
·
催化工程
✓ 已验证
DOI
高影响因子
Metals
·
2018
·Vol. 8
·期 4
·252
·
IF 1.704
Zhifeng Wang,Xiaomin Zhang,Yongguang Zhang,Man Li,Chunling Qin,Zhumabay Bakenov
CuS is a metal sulfide anode material used in constructing lithium ion batteries (LIBs) with great promise. However, its practical application is limited by rapid capacity decline, poor cycling, and rate performance. In this work, the CuS nanowire-on-nanoplate network is synthesized through an improved dealloying method under two contrasting reaction temperatures. When used as an LIB anode, the as-obtained CuS network exhibits superior cycling performance (420 mAh·g−1retained after 100 cycles at 0.2 C). When at 3 C, it still delivers a capacity of around 350 mAh·g−1. The improved electrochemical performances of the CuS anode should be attributed to the well-designed nanowire-on-nanoplate network structure in which the introduction of nanowires improves Li storage sites, shortens Li-ion diffusion distance, enhances the conductivity of active materials, and offers multiscale spaces for buffering the volume variation. The fabrication route adopted in this paper has an important significance for developing the dealloying technique and designing more suitable anode structures for LIBs.Keywords:dealloying;CuS;anode;Li-ion battery;metallic glass
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 16
·2834
·
IF 5.719
Yun He,Hongjie Gao,Jiankang Liu
Diclofenac is a non-steroidal, anti-inflammatory drug and is clinically used for the treatment of osteoarthritis, non-articular rheumatism, etc. This research aimed to demonstrate the creation of an upgraded photoelectrochemical (PEC) aptamer sensor for detecting diclofenac (DCF) with high sensitivity. In this work, photoactive materials and bio-identification components served as visible-light-active CuS/MoS2/Bi2WO6heterostructures and aptamers, respectively. CuS and MoS2/Bi2WO6were combined to improve photocurrent responsiveness, which helped the structure of PEC aptasensors. Additionally, the one-pot synthesis of CuS/MoS2/Bi2WO6was ecologically beneficial. With these optimizations, the photocurrent response of aptamer/CS/CuS/MoS2/Bi2WO6exhibited linearity between 0.1 and 500 nM DCF. The detection limit was 0.03 nM (S/N = 3). These results suggest that the PEC sensing technique might produce an ultra-sensitive sensor with high selectivity and stability for DCF detection.Keywords:photoelectrochemical;CuS/MoS2/Bi2WO6;diclofenac (DFC);heterostructure;aptasensors
研究领域:
生物传感技术
·
环境监测
·
药物检测
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）