INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Xu Xu,Xiang Li,Guibin Liu,Xixi Wei,Daming Feng,Lei Zhang
In recent years, efficient oil–water separation has gradually become an indispensable part of environmental treatment. Superhydrophobic/superoleophilic materials with excellent self-cleaning performance are urgently required and remain challenging in the investigation of practical, rapid, and efficient separation of oil–water mixture and emulsion, especially those with robust surfaces that can be used in harsh conditions. In this work, a novel superhydrophobic/superoleophilic material was first fabricated by in situ constructing PDMS@ZIF-7/Cu3(PO4)2 hierarchical architectures on a copper mesh, which was adopted as a high flux and efficient separation material for gravity-driven separation of oil–water mixture as well as emulsion. The introduction of crucial Cu3(PO4)2 nanosheet interlayers created the ideal hierarchical structures and serve as partial templates for the subsequent in situ growth of hydrophobic ZIF-7 nanosheets. An improved superhydrophobicity (CA = 155°), permeation flux (102,000 L m–2 h–1), and preferred self-cleaning property were thus achieved by such manipulation of the copper mesh. The PDMS@ZIF-7/Cu3(PO4)2 mesh exhibited exceptional separation efficiency for diverse oil–water mixtures and emulsions attributed to the superhydrophobicity and the demulsification ability and considerable stability to cope with extreme environments including sunlight resistance, low temperature, and corrosion resistance, which prompted its promising applicability in cleaning emulsified wastewater.
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2021
·
IF 19.503
FanChi Meng,Mi Peng,Yunlei Chen,Xiangbin Cai,Fei Huang,Lini Yang,Xiao Liu,Tao Li,Xiaodong Wen,Ning Wang,Dequan Xiao,Hong Jiang,Lixin Xia,Hongyang Liu,Ding Ma
Nanozyme has attracted great attention due to its diverse enzymatic catalytic activities . But there are still challenges in constructing novel nanozyme with robust catalytic activity. Here, we report an atomically dispersed and fully exposed Cu 3 cluster stabilized on defect-rich nanodiamond-graphene hybrid support (Cu 3 /ND@G) with unique active adsorption sites, which benefit the adsorption and cleavage of O 2 , resulting in enhanced oxidase-like and antibacterial activity . The catalytic rate constant of Cu 3 /ND@G ( K cat = 1.474 × 10 −1 s −1 ) is higher than those of previously reported copper single atom oxidase mimics (0.5 × 10 −3 s −1 ) and even the commercial Pt/C mimics (1.01 × 10 −2 s −1 ). DFT calculation revealed that the atomically dispersed Cu 3 cluster as active center significantly improves the oxidase-like activity, attributing to the easy dissociation of O 2 into reactive oxygen species (•OH). The atomically dispersed Cu 3 cluster with an antibacterial rate of 100% in the NaAc buffer presents its potential application in the field of antibacterial materials.
研究领域:
纳米医学
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生物材料学
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催化生物学
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分子生物学
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抗菌材料
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转化医学
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自由基化学
✓ 已验证
DOI
高影响因子
ENZYME AND MICROBIAL TECHNOLOGY
·
2021
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IF 3.493
Min Lu,Hao Zhang,Xu Wang,Hui Jiang,Guang Hu,Feng-Qing Yang
A simple, convenient and efficient enzyme immobilization method through phytic acid (PA) modified α-Glucosidase (α-Glu)/Cu 3 (PO 4 ) 2 ·3H 2 O hybrid nanoflower was developed. The structural properties of the materials were studied by several characterization techniques. Subsequently, the enzymatic reaction conditions such as the pH value and temperature were optimized, and the enzyme kinetics and inhibition parameters were determined. The PA modified α-Glu/Cu 3 (PO 4 ) 2 ·3H 2 O hybrid nanoflower had better enzymatic activity under a wide pH range and high temperature than the free one. After seven successive cycles, the PA modified α-Glu/Cu 3 (PO 4 ) 2 ·3H 2 O hybrid nanoflower could still maintain approximately 63.0 % of its initial immobilized enzyme activity. The Michaelis-Menten constant ( K m ) and the half-maximal inhibitory concentration (IC 50 ) of acarbose were determined as 0.77 mM and 15.01 μM, respectively. In addition, the material was applied to evaluate the inhibitory activity of ten phenolic compounds on α-Glu, and epicatechin gallate, gallocatechin gallate, epigallocatechin gallate and rosmarinic acid showed good inhibitory activity with % of inhibition of (53.42 ± 2.39)%, (37.28 ± 1.32)%, (37.08 ± 0.63)% and (35.53 ± 0.23)%, respectively. These results indicate that the PA modified hybrid nanoflower is an efficient method of α-Glu immobilization.
研究领域:
生物化学
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纳米技术
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酶工程
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药学
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产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF CHEMICAL PHYSICS
·
2021
·Vol. 34
·期 2
·238-248
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IF 1.114
Li Yan-ni,Hu Yan-yun,Ding Lei,Zhou Dian-bing,Chen Wen-jun
Residues of tetracycline antibiotics (TCs) in environments may be harmful to human. Due to their high polarities, it is extremely challenging to efficiently enrich TCs with low concentrations in natural waters for analysis. In this work, a magnetic metal-organic framework Fe 3 O 4 @[Cu 3 (btc) 2 ] was synthesized and applied as a dispersive micro-solid phase extraction adsorbent for TCs enrichment. Effects of dispersive micro-solid phase extraction conditions including extraction time, solution pH, and elution solvent on the extraction efficiencies of TCs were investigated. Results show that TCs could be enriched efficiently by Fe 3 O 4 @[Cu 3 (btc) 2 ], and electrostatic interaction between TCs and Fe 3 O 4 @[Cu 3 (btc) 2 ] dominated this process. Combined with liquid chromatography-tandem mass spectrometry, four TCs residues (oxytetracycline, tetracycline, chlortetracycline, and doxycycline) in natural waters were determined. The detection limits (LOD, S/N = 3) of the four antibiotics were 0.01–0.02 µg/L, and the limits of quantitation (LOQ, S/N = 10) were 0.04–0.07 µg/L. The recoveries obtained from river water and aquaculture water spiked with three TCs concentration levels ranged from 70.3% to 96.5% with relative standard deviations of 3.8%–12.8%. Results indicate that the magnetic metal-organic framework based dispersive micro-solid phase extraction is simple, rapid and high-loading for antibiotics enrichment from water, which further expand the practical application of metal-organic frameworks in sample pretreatment for environmental pollutant analysis.
研究领域:
环境科学
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分析化学
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DOI
高影响因子
MICROCHIMICA ACTA
·
2023
·Vol. 190
·期 10
·1-10
·
IF 5.7
Wang Na,Yang Juan,Luo Zhi,Qin Dongmiao,Wu Yusheng,Deng Biyang
Copper phosphate hybrid nanoflowers (Cu 3 (PO 4 ) 2 HNFs) were demonstrated to produce cathodic ECL emission in the presence of potassium persulfate (K 2 S 2 O 8 ) and then used as a carrier due to their large specific surface area. AgNPs modified on Cu 3 (PO 4 ) 2 HNFs provided more binding sites for immobilizing secondary antibodies and accelerating the electron transfer rate to enhance the ECL signal. In addition, FONDs-Au was used to capture primary antibodies due to its good biocompatibility and large specific surface area. A sandwich electrochemiluminescence (ECL) immunosensor based on copper phosphate hybrid nanoflower/Ag nanoparticle (Cu 3 (PO 4 ) 2 HNFs@Ag) composite and Au NPs-functionalized Fe 2 O 3 nanodendrites (FONDs-Au) was constructed to detect prostate-specific antigen (PSA) in real samples. Under optimal conditions, the constructed sandwich ECL immunosensor was sensitive to PSA with a detection limit of 0.037 pg/mL ( S / N = 3), a linear detection concentration range of 0.0001–50 ng/mL, and a recovery range of 97.33–102.5%. This immunosensor is expected to provide a method to detect PSA or other biomarkers. Graphical Abstract
研究领域:
分析化学
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生物传感器
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纳米技术
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医学诊断
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产品关联
DOI
PubMed
高影响因子
Journal of Physical Chemistry C
·
2016
·
IF 4.509
Yizhen Yang,Qingxiang Wang,Weiwei Qiu,Hongxu Guo,Feng Gao
The metal–organic framework (MOF) of Cu3(btc)2 (btc = benzene-1,3,5-tricarboxylic acid) is covalently immobilized at chitosan (CS)–electrochemically reduced graphene oxide (ERGO) hybrid film modified electrode, which is characterized by scanning electron microscope (SEM), energy-dispersive X-ray spectra (EDS), and electrochemistry. The MOF-based electrode is applied as an electrochemical sensing platform for the simultaneous detection of dihydroxybenzene isomers (DBIs) of catechol (CT), resorcinol (RS), and hydroquinone (HQ). The results show that the DBIs present well-resolved and intense voltammetric signals at the modified electrode, due to the synergic effect contributing from Cu3(btc)2 with unique porous framework structure and ERGO with high electronic conductivity. The excellent distinguishing efficiency of the sensor toward DBIs is also confirmed by the quantum chemical computation. Quantitative analysis assays by differential pulse voltammetry shows that the sensor has wide linear ranges and low detection limits for the DBIs. The developed sensor is also applied for the determination of DBIs in the real water sample, and satisfactory results are obtained. This work strongly implies that the MOFs have great potential in the construction of novel electrochemical sensor for isomers.
研究领域:
分析化学
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材料科学
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电化学
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环境科学
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产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2020
·Vol. 326
·期 1
·185-192
·
IF 1.137
Hu Ke,Liu Zhirong,Xiu Taoyuan,Zhou Limin,Wang Yun
The Cu 3 (BTC) 2 (BTC = 1,3,5-benzenetricarboxylic acid) was synthesized by water/solvent heat method. The Cu 3 (BTC) 2 was characterized by SEM/EDS, Zeta potential and XRD. Batch static adsorption experiments investigated the various factors affecting the adsorption of Th(IV) in aqueous solution such as pH, solid–liquid ratio, contact time, initial concentration and temperature, and the adsorption mechanism is also discussed. The adsorption process was in line with the pseudo-second-order kinetic model and the Langmuir isotherm model. At the same time, compared with other adsorbents. The results showed that Cu 3 (BTC) 2 had good adsorption for Th(IV) with a maximum adsorption of 757.58 mg g −1 .
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Puxiang Zhao,Jiaojiao Hu,Yue Feng,Feng Wu,Cuiying Tan,Xiaodan Chen,Mingxian Liu
Copper-based Fenton-like agents have the ability to convert weakly oxidizing H 2 O 2 into highly oxidizing hydroxyl radicals (·OH) at tumor sites during chemodynamic therapy (CDT). In this study, the interfacial attraction properties between the negatively charged OCP − in sodium phosphathynolate (NaOCP) and the positively charged environment inside the lumen of halloysite nanotubes (HNTs) were utilized to synthesize Cu 3-x P nanoparticles in situ within the HNTs. The study investigated the chemical composition , morphology, and structure of Cu 3-x P@HNTs. The results indicated uniform distribution of Cu 3-x P particles measuring 3–5 nm within HNTs' lumen. Experiments conducted internally and externally to cells confirmed the catalytic capability of Cu 3-x P@HNTs to oxidize H 2 O 2 to ·OH. Furthermore, CP@H-CM was synthesized by enclosing Cu 3-x P@HNTs in a cancer cell membrane , which selectively targets cancer cells. The experiments revealed the cytotoxicity of CP@H-CM on 4T1 cells. Additionally, the antitumor efficacy of CP@H-CM was evaluated in vivo through tumor recurrence experiments in mice. Moreover, the efficacy of CP@H-CM in repressing tumor growth was enhanced by incorporating infrared laser , indicating a synergistic photodynamic treatment for breast cancer. This study presents an efficacious and viable therapeutic approach to inhibit postoperative tumor reappearance. The implications of this approach are promising, particularly in the domain of tumor treatment and metastasis.
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DOI
PubMed
高影响因子
Nanoscale Advances
·
2023
·Vol. 5
·期 20
·5661-5670
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IF 4.7
Tingyu Xue,Fang Liu,Bin Lu,Qingrong Dong,Bin Zhao,Tianqing Chen,Kun Zhang,Jianguo Li,Jiangfeng Du
Radioactive cesium (Cs) is a significant concern due to its role as a major byproduct of nuclear fission and its potential for radioactive contamination. Internal contamination with radioactive Cs is characterized by immoderate production of reactive oxygen species (ROS), resulting in severe radiation damage. Therefore, the development of therapeutic strategies should focus on enhancing the excretion of radioactive Cs and reducing radiation-induced oxidative damage. However, current therapeutic drugs like Prussian blue (PB) have limited efficacy in addressing these issues. In this study, we present Cu3[Fe(CN)6]2 (CuFe) nanoparticles, a Prussian blue analog (PBA), which can not only efficiently sequester Cs but also exhibit resistance against radiation damage. The results of the adsorption studies demonstrate that CuFe outperforms PB in terms of adsorption performance. Further mechanistic investigations indicate that the increased adsorption capacity of CuFe may be attributed to the presence of additional defects resulting from the [Fe(CN)6] missing linkers. Moreover, CuFe mimics the functions of catalase (CAT) and superoxide dismutase (SOD) by effectively eliminating O2˙− and H2O2 while scavenging ˙OH, thereby mitigating ROS induced by radiative Cs. Importantly, in vivo study confirms the efficient Cs decorporation capability of CuFe. The fecal cumulative excretion rate of CuFe reaches 69.5%, which is 1.45 times higher than that of PB (48.8%). These findings demonstrate that CuFe exhibits excellent Cs removal performance and ROS scavenging ability, making it an attractive candidate for the treatment of Cs contamination.
研究领域:
药理学
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放射医学
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纳米医学
✓ 已验证
DOI
PubMed
高影响因子
Results in Physics
·
2021
·
IF 4.476
Lin Bo,Yongpeng Wang,Wenying Wang,Lei Wang,Fujin Li,Min Zuo,Yanzhen Ma,Degang Zhao
The ternary Cu 3 SbSe 4 thermoelectric material with diamond-like structure exhibit good thermoelectric performance in the middle temperature region. In this study, the Cu 3− x Ni x SbSe 4 ( x = 0–0.03) materials were fabricated by melting-ball milling-hot pressing process. The influences of grain size and compositional gradient on the microstructure and thermoelectric properties of Cu 3− x Ni x SbSe 4 were evaluated. It is found that the electrical conductivity of Cu 2.97 Ni 0.03 SbSe 4 was about 33% higher than that of Cu 3 SbSe 4 sample, and the lattice thermal conductivity was reduced from 3.3 Wm −1 K −1 to 2.4 Wm −1 K −1 at room temperature due to the grain refinement and more V Se defects. The maximum zT value for the Cu 2.97 Ni 0.03 SbSe 4 sample was 0.62 at 650 K.
研究领域:
材料科学
·
凝聚态物理
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功能材料
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热电材料
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半导体材料
✓ 已验证
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 5
·2357-2364
·
IF 2.936
Jianyun Yu,Xinxin Chen,Min Jiang,Anming Wang,Linlin Yang,Xiaolin Pei,Pengfei Zhang,Stephen Gang Wu
To develop an efficient and green immobilized biocatalyst for promiscuous catalysis which has a broad scope of applications, hybrid nanoflower (hNF) confined papain as a biocatalyst has been proposed and characterized in this study. hNFs were firstly prepared through mixing CuSO4 aqueous solution with papain in phosphate saline (PBS) at room temperature. The resulting hNFs were characterized by SEM and verified through a hydrolysis reaction with N-benzoyl-DL-arginine amide as substrate. Under optimal conditions, this nano-biocatalyst demonstrated a 15-fold hydrolytic activity compared with papain of free form, along with better thermal stability. A series of reaction factors (reaction temperature, time, and solvent) have been investigated for Knoevenagel condensation reactions with hNFs as catalyst. At optimal conditions, product yield of the hNFs catalyzed reaction was 1.3 fold higher than that of the free enzyme with benzaldehyde and acetylacetone as substrates. A few aldehydes and methylene compounds have also been used to test the generality and scope of this new enzymatic promiscuity. To sum up, the obtained hNFs demonstrate better catalytic properties than free papain and the inorganic metal-salt crystal can function as both support and promotor in biocatalysis.
研究领域:
生物化学
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材料科学
·
酶工程
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产品关联
DOI
PubMed
高影响因子
BIOCHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 3.978
Miaorong Zhang,Yan Zhang,Chuankai Yang,Chunyun Ma,Jianguo Tang
A novel smartphone-based colorimetric biosensor based on enzyme-inorganic hybrid nanoflowers was applied for ultrasensitive determination of of hydrogen peroxide (H 2 O 2 ). Horseradish peroxidase-inorganic hybrid nanoflowers (HRP-Cu 3 (PO 4 ) 2 ⋅3H 2 O HNFs) were facilely synthesized by a one-pot incubation using HRP and Cu 3 (PO 4 ) 2 ⋅3H 2 O as organic and inorganic components, respectively. Characterization results revealed HRP molecules were well immobilized in HRP-Cu 3 (PO 4 ) 2 ⋅3H 2 O HNFs via self-assembly. The results of smartphone-based colorimetric assay successfully demonstrated the good sensing performance of HRP-Cu 3 (PO 4 ) 2 ⋅3H 2 O HNFs. The linear detection range of H 2 O 2 was from 5 to 500 μM, and the detection limit was 0.5 μM. Further, the proposed assay showed good anti-interference ability and high sensitivity for H 2 O 2 detection owing to the high specificity of HRP and excellent accuracy of color parameters obtained by Color Detector software, respectively. In addition, HRP-Cu 3 (PO 4 ) 2 ⋅3H 2 O HNFs had desirable storage stability and reusability, and this colorimetric system can realize the H 2 O 2 detection in tap water, which indicated the good applicability of HRP-Cu 3 (PO 4 ) 2 ⋅3H 2 O HNFs in real sample.
研究领域:
生物化学
·
分析化学
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DOI
高影响因子
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