ChemNanoMat
·
2025
·
IF 2.6
Zhou Zhu,Wei Guo,Shudong Zhang,Nian Li,Min Xi,Jixiang Zhang,Cui Liu,Zhenyang Wang
Smart windows are emerging energy-saving approaches for buildings, dynamically adjusting light transmittance based on weather changes to maintain indoor comfort. However, conventional thermochromic (TC) materials have slow response rates and poor optical sensitivity. Herein, hollow Cu 7 S 4 nanomaterials with broad spectral absorption and high photothermal conversion efficiency are combined with thermoresponsive PNIPAM hydrogel to create a Cu 7 S 4 /PNIPAM hydrogel. This composite enables fast transmittance conversion via photothermal response. The smart window, designed with a glass interlayer, can adaptively adjust transmittance according to real-time light intensity. It is transparent at low light intensity ( T 550 nm = 70.2%) and quickly becomes translucent ( T 550 nm = 39.8%) within 3 min under high light intensity, blocking excess light. This design can reduce indoor temperature by up to 16 °C compared to ordinary glass. Additionally, in cold climates, the smart window can provide heat through photothermal conversion. This approach offers a new way to enhance the performance of traditional TC materials.
研究领域:
材料科学
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纳米技术
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光学工程
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能源效率
·
高分子科学
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DOI
高影响因子
BIOELECTROCHEMISTRY
·
2023
·
IF 5
Zheng-Zhi Yin,Zixuan Liu,Min Zhou,Xu Yang,Guojun Zheng,Hongyu Zhang,Yong Kong
Sensitive detection of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) spike protein (S protein) is of significant clinical importance in the diagnosis of COVID-19 pandemic. In this work, a surface molecularly imprinted (SMI) electrochemical biosensor is fabricated for the detection of SARS-CoV-2 S protein. Cu 7 S 4 -Au is used as the built-in probe and modified on the surface of a screen-printed carbon electrode (SPCE). 4-Mercaptophenylboric acid (4-MPBA) is anchored to the surface of the Cu 7 S 4 -Au through Au–SH bonds, which can be used for the immobilization of the SARS-CoV-2 S protein template through boronate ester bonds. After that, 3-aminophenylboronic acid (3-APBA) is electropolymerized on the electrode surface and used as the molecularly imprinted polymers (MIPs). The SMI electrochemical biosensor is obtained after the elution of the SARS-CoV-2 S protein template with an acidic solution by the dissociation of the boronate ester bonds, which can be utilized for sensitive detection of the SARS-CoV-2 S protein. The developed SMI electrochemical biosensor displays high specificity, reproducibility and stability, which might be a potential and promising candidate for the clinical diagnosis of COVID-19.
研究领域:
生物医学工程
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分析化学
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分子生物学
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电化学
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病毒学
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DOI
PubMed
高影响因子
Chemistry-An Asian Journal
·
2014
·Vol. 9
·期 8
·2309-2316
·
IF 3.935
Qun Luo,Yongquan Zeng,Liwei Chen,Changqi Ma
Graphical How does your wurtzite-CZTS grow? The crystal growth mechanism of wurtzite Cu 2 ZnSnS 4 (WZ-CZTS) has been investigated by using time-dependent XRD patterns, TEM images, and absorption spectra analysis. The formation process of WZ-CZTS nanocrystals involves four steps: reduction of Cu 2+ to element Cu, nucleation of Cu 7 S 4 , nucleation and growth of WZ-CZTS on the basal planes of Cu 7 S 4 , and phase transformation from Cu 7 S 4 to WZ-CZTS over about 5 min. en This link goes to a English section zh This link goes to a English section Wurtzite Cu 2 ZnSnS 4 (WZ-CZTS) has been controllably synthesized through a hot-injection route. The crystal-growth mechanism of WZ-CZTS has been investigated by using time-dependent XRD patterns, TEM images, and absorption spectra analysis, and revealed that WZ-CZTS nucleated and grew from monoclinic Cu 7 S 4 nanocrystals through phase transformation of Cu 7 S 4 to WZ-CZTS within 5 min. The synthesis processes are dependent on precursor concentration, reaction temperature, reaction time, organic ligand, and sulfur source and have been studied in detail. It was revealed that the width of the WZ-CZTS nanocrystals was mainly controlled by the precursor concentration, which determines the diameter of Cu 7 S 4 . The length could be regulated by the ratio of dodecanethiol (DDT) to oleylamine (OLA) and reaction time. en This link goes to a English section zh This link goes to a English section 1
研究领域:
材料科学
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化学
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DOI
PubMed
高影响因子
Water Cycle
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2022
·
IF 0
Yue Zhang,Zheng Zhou,Haixiang Han,Chunhua Xu
Nanoparticles represent an interesting platform that demonstrates properties absent from bulk materials. Although the employment of nanoparticles for environmental remediation has attracted tremendous attentions in both scientific research and industrial applications, there is still a huge gap between the clear mechanism understandings and their deliverable activities due to the complex reaction kinetics. Herein, we report the synthesis of high-quality, monodispersed Cu 7 S 4 nanoparticles as a model nano system to investigate the degradation mechanism of organic pollutants. The morphology, chemical composition and atomic structure of the as-prepared Cu 7 S 4 have been characterized by Transmission Electron Microscope (TEM), X-ray photoelectron spectroscopy (XPS), X-ray powder diffractometer (XRPD) and Fourier transform infrared spectra (FT-IR). In addition, it is revealed that the Cu 7 S 4 particles can effectively degrade organic pollutants, like Orange I and Orange II through a slow and controllable release of Cu cations process coupled with surface catalysis. The detailed study shows that the small amounts of released Cu cations from Cu 7 S 4 nanoparticles are first coordinated with the organic pollutants and the resultant complexes are then degraded on the surface of nanoparticles in the presence of H 2 O 2 .
研究领域:
环境科学
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材料科学
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化学
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DOI
Journal of Environmental Chemical Engineering
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2025
·
IF 7.2
Linfei Zhao,Zhangfu Yuan,Hongbiao Dong,Hongxin Zhao
By synthesizing Cu 7 S 4 catalysts with abundant structural defects from Cu 2 O aerogels as precursors, the influence of sulfur on CO 2 RR is investigated. On the surface of the Cu 7 S 4 catalyst, the conversion of CO 2 to C 2 H 5 OH can be achieved under less negative potential conditions. At more negative conditions, Cu 7 S 4 undergoes reconstruction, and the dominant product shifts to HCOOH due to the dissolution of sulfur elements, which is caused by the adsorption of sulfur atoms on the metal Cu surface after the restructuring of Cu 7 S 4 . On the surface of Cu aerogels with low concentration of adsorbed sulfur atoms, a maximum FE of 79.4 % for HCOOH is achieved at –1.2 V vs. RHE. Density functional theory (DFT) calculations indicate that sulfur atoms located the lattice and those adsorbed on the surface post-dissolution favor the formation of C 2 products and HCOOH, respectively.
研究领域:
材料科学
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电化学
·
催化反应
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DOI
高影响因子
Nano-Micro Letters
·
2014
·Vol. 6
·期 2
·169-177
·
IF 2.275
Song Guosheng,Han Linbo,Zou Weiwei,Xiao Zhiyin,Huang XiaoJuan,Qin Zongyi,Zou Rujia,Hu Junqing
Cu 2-x S nanocrystals (NCs), characterized by low cost, low toxicity, high stability and high photothermal conversion efficiency, provide promising platforms as photothermal agents. Herein, a novel two-step synthesis has been developed for Cu 7 S 4 nanocrystals with hollow structure using the as-prepared copper nanoparticles as starting a solid precursor followed by hot-injection of sulfide source.The Cu 7 S 4 NCs exhibit intense absorption band at Near-infrared (NIR) wavelengths due to localized surface plasmon resonance (LSPR) mode, which can effectively convert 980 nm-laser energy into heat.Moreover, the localized high temperature created by Cu 7 S 4 NCs under NIR irradiation could result in efficient photothermal ablation (PTA) of cancer cells in vivo , demonstrating a novel and promising photothermal nanomaterials.
研究领域:
纳米材料
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光热治疗
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癌症纳米技术
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无机合成
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生物医学工程
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DOI
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
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2025
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IF 5.6
Rui Huang,Hangyu Luo,Zhenbang Meng,Weirui Chen,Ri Chen,Qi He,Yuxi Guo,Lihua Zhou,Wenxia Wang,Qiaoshan Chen
The escalating threat of antibiotic-resistant bacterial infections necessitates innovative antimicrobial strategies beyond conventional approaches. Micro/nanomotors, leveraging self-propulsion and intrinsic antibacterial capabilities, offer a promising alternative. However, existing bactericidal micromotors face a fundamental trade-off between motility and bacterial capture capacity. To address this challenge, we synthesized rough-surfaced, virus-like Cu 7 S 4 /vSiO 2 /TA micromotors for localized bacterial capture and synergistic photothermal therapy. This multifunctional platform integrates: i ) Cu 7 S 4 nanoparticles as a high-efficiency NIR photothermal core (λ = 1064 nm), ii ) virus-like silica (vSiO 2 ) shells engineered with nanospike structures to mimic viral morphology, enabling multivalent, affinity-driven bacterial capture, iii ) Tannic acid (TA) coatings providing robust adhesion functionality and enhanced biocompatibility. Attributed to these intriguing properties, the micromotors exploit NIR-II light-fueled self-propulsion to actively seek and accumulate at infection sites. The vSiO 2 /TA surface facilitates targeted bacterial adhesion through synergistic physicochemical interactions, effectively "trapping" pathogens locally. Subsequent NIR irradiation triggers the Cu 7 S 4 core to generate rapid, localized hyperthermia (>50 °C), achieving synergistic bacterial eradication while minimizing off-target damage. We demonstrate the micromotors’ efficacy against diverse bacterial targets (e.g., Gram-positive/Gram-negative strains), highlighting their potential as a targeted, antibiotic-free strategy for treating localized bacterial infections. We believe that this work pioneers the convergence of biomimetic capture (virus-like topology), autonomous motion, and photothermal conversion within a single platform.
研究领域:
纳米医学
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抗菌治疗
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生物医学工程
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光热治疗
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微纳机器人
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产品关联
DOI
PubMed
高影响因子
OPTICAL MATERIALS
·
2023
·
IF 3.9
Cheng Zuo,Xishi Tai,Qian Su,Zaiyong Jiang,Qingjie Guo
In the field of photocatalysis , the loaded photocatalyst possesses the advantages of controllable morphology, uniform preparation, low cost, and easy recovery. It can effectively avoid the secondary pollution caused by the powder catalyst and is considered a potential substitute for the powder photocatalyst. In this work, TiO 2 and Cu 7 S 4 hybrid materials with oxygen vacancies (OV) grown in situ on copper mesh (CM) were prepared by anion exchange and hydrothermal reaction . The characterization results showed that the concentration of oxygen vacancies in TiO 2 increased significantly after calcination . Under the simulated visible light , the liquid film reaction was adopted. The yield of NH 3 synthesized by OV–TiO 2 @Cu 7 S 4 /CM photocatalyst was 133.42 μmol cm −2 h −1 , 5.2 and 2.2 times that of pure TiO 2 and Cu 7 S 4 , respectively. The enhanced photocatalytic performance is attributed to the synergistic effect between the interfacial electric field of the S-scheme heterostructure and the abundant oxygen vacancies , which induces the efficient separation and migration of carriers. The cycle experiment showed that OV–TiO 2 @Cu 7 S 4 /CM heterojunction has excellent stability in photocatalytic nitrogen fixation . This work provides insight into the design of S-scheme photocatalysts with rich surface defects for green and efficient reduction of N 2 .
研究领域:
光催化
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材料科学
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环境科学
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纳米技术
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能量转换
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DOI
高影响因子
ACS Biomaterials Science & Engineering
·
2018
·
IF 4.432
Yang Zhang,Danfeng Wang,Mengyue Gao,Bin Xu,Jiangying Zhu,Weijiang Yu,Depeng Liu,Guohua Jiang
Near-infrared (NIR) light-triggered and separable segmented microneedles (MNs), consisting of lauric acid and polycaprolactone (LA/PCL) arrowheads and poly(vinyl alcohol) and polycaprolactone (PVA/PVP) supporting bases, have been fabricated. A hypoglycemic drug (metformin) and photothermal conversion factor (Cu7S4 nanoparticles) are encapsulated into LA/PCL arrowheads. Due to the dissolution of soluble supporting bases after the absorption of tissue fluid, the separable MNs arrowheads can be embedded into skin after insertion. Under the NIR-light irradiation, the LA/PCL arrowheads exhibit an excellent thermal-ablation change with a low amount of Cu7S4 nanoparticles (0.1 wt %) due to the low melting point of LA and PCL, thus enabling the release behavior of the encapsulated model drug to be photothermally triggered. Compared to the hypodermic injection of metformin, the thermal ablation of separable MNs triggered by NIR irradiation in the current research exhibit an excellent hypoglycemic effect in vivo. It suggests that the NIR-induced thermal-ablation MNs comprise a prospective transdermal drug-delivery system for the precise control of the timing and dosage of a drug that is dependent on NIR administration.
研究领域:
药学
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生物医学工程
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药物递送系统
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DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Xin Liao,Renjie Pan,Jie Xiao,Mingyang Jiang,Yue Feng,Huafeng Zhang
Preparing a hollow Ag-Cu 7 S 4 with lattice defect, improving Seebeck coefficient and thermoelectric effect. • Ag 3d band hybridization narrows bandgap, promotes electron-hole separation and thermoelectric-catalytic ROS generation. • Scaffold enables efficient photothermal conversion and synergistic thermoelectric output under 808 nm NIR-I irradiation. • Thermoelectric boost osteogenesis: 2.1±0.3-fold upregulation of ALP/ARS and 55±2% increase in osteogenic gene and protein. • ROS cascade photothermal disrupt biofilm and GSH, achieving 92±2% ( S. aureus ) and 94.2±2.1% ( E. coli ) antibacterial rates. Cuprous sulfide (Cu 7 S 4 ) shows great potential for thermoelectric treatment of infectious bone defects due to its favorable carrier mobility and thermal conductivity. Nevertheless, its applicability remains constrained by suboptimal carrier concentration, rapid electron-hole recombination, and poor near-infrared (NIR) absorption. Herein, silver ions (Ag + ) were incorporated into Cu 7 S 4 via cation exchange to form hollow Ag-Cu 7 S 4 nanoparticles, and subsequently embedded into polycaprolactone (PCL) to prepare PCL/Ag-Cu 7 S 4 scaffolds. Specifically, Ag utilizes its similar atomic radius to partially substitute for Cu, introducing lattice defects to enhance phonon scattering, further reducing lattice thermal conductivity, thereby enhancing thermoelectric therapy (TET). Meanwhile, hybridization of Ag 3d energy levels with the Cu 7 S 4 band structure optimizes the Fermi level, narrowing the bandgap, thus boosting electron-hole pairs generation and enhancing the thermoelectric catalytic generation of ROS. The scaffolds exhibit excellent NIR absorption and photothermal effect (PTT). The enhanced phonon scattering and conductivity significantly optimize the thermoelectric figure of merit. TET utilized electrical stimulation to promote osteogenic differentiation, upregulating Alkaline phosphatase and Alizarin red by 2.1 ± 0.3-fold and increasing osteogenesis-related mRNA and protein by 55 ± 2%. The narrowed bandgap boosts thermoelectric catalytic ROS generation, ROS synergistically with PTT destroyed the defense systems, achieving antibacterial rates of 92 ± 2% ( S. aureus ) and 94.2 ± 2.1% ( E. coli ). Download: Download high-res image (151KB) Download: Download full-size image
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Man Zhang,Haihua Hu,Jiqiu Qi,Fuxiang Wei,Qingkun Meng,Yaojian Ren,Zhenzhen Zhan,Yanwei Sui,Zhi Sun
Copper sulfide as a typical example of transition metal sulfides is of great significance for practical application. Owing to maintain the structural stability of the converted reactive anode materials to alleviate their inherent poor conductivity and low specific capacitance have been considered as the most promising supercapacitors materials. The stoichiometric ratio and crystal structure of CuS are very sensitive, hence, it is extraordinarily imperative to regulate the morphology via controllable Ni ion functionalization for pseudocapacitors. Herein, the morphology of the prepared irregular mesh-like network CuS 2 @LSC (Longans shell carbon) composites transforms into micron flower-like Cu 7 S 4 @LSC by effective surface modification strategies. Furthermore, the LCC (Longans core carbon) was successfully prepared with compound granular alpha-Fe 2 O 3 as a negative material to assemble water-system Button Asymmetric Supercapacitors (BASC). Benefiting from the unique morphology design of the micron flower-like structure, the Cu 7 S 4 @LSC manifests exceptional remarkable storage performance. The maximum specific capacitance of 1431.1 F g − 1 at 1 A g − 1 , with energy density of 42.47 Wh kg −1 at the power density was 800 W kg −1 . Additionally, a single BASC lights up the LED and keeps it for 10 min. This demonstrates our study provides new strategy and insights of developing cost-effective, reliable and exceptional electrochemical performance asymmetric supercapacitor for auxiliary energy storage devices in a general sense.
研究领域:
材料科学
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电化学
·
能源存储
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 48
·期 1
·228-236
·
IF 3.3
Yan Wang,Haoran Li,Daqing Chen,Danhua Ge,Xiaojun Chen
Herein, a simple solvothermal method was used to prepare a CuSx/g-C3N4 (CSG) heterojunction as an efficient oxygen activator containing sulfur vacancies (SVs). The as-prepared catalyst can activate oxygen to effectively degrade tetracycline (TC). The degradation rate of TC (20 mg L−1) reached 98.9% in 90 min over CSG (0.02 g L−1) under an air atmosphere, which maintained good performance within a wide pH range of 6–10. It was almost unaffected by any light source and water quality, indicating a highly efficient oxygen activator and good stability. Moreover, the trapping experiments and EPR results revealed that the main reactive oxygen species (ROSs) were singlet oxygen (1O2) and hydroxyl radicals (˙OH). CSG (4 : 1) enabled the activation of oxygen-produced ROS for removing TC even in the dark, which was in accordance with the EPR results. In addition, the CSG catalyst exhibited a good removal performance in practical wastewater treatment. Our study demonstrated that the CSG catalyst had the potential to remove organic pollutants from wastewater.
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DOI
高影响因子
危险品化学品经营许可证（带存储）