JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Jiajing Zhang,Suwei Wang,Pin Song,Ang Li,Wei Jiang,Jun Di
The insufficient solar light response ability of the photocatalyst, rapid recombination of interface charges, and lack of active sites significantly inhibit the efficiency of photocatalytic CO 2 reduction. Addressing these challenges simultaneously is a very challenging task. Herein, an interface engineering coupled surface polarization strategy is proposed to optimize the CO 2 photoreduction performance. The copper tetracarboxyphenylporphyrin (CuTCPP) modified BiOBr/Bi 19 S 27 Br 3 (BBS) heterostructure was developed. The built-in electric field formed between BiOBr and Bi 19 S 27 Br 3 interfaces induces the effective interfacial charge separation, while the surface polarization of CuTCPP induces the transfer of electrons from the conduction band (CB) of BBS to the CB of CuTCPP. Benefiting from this unique configuration and abundant active sites in CuTCPP, greatly improved photocatalytic CO 2 reduction performance can be realized. Without adding cocatalysts and sacrificial agents, the optimized CO generation performance of CuTCPP-BiOBr/Bi 19 S 27 Br 3 (BBS-CT) is 3.5 times higher than that of BBS. This work provides valuable insights of interface engineering coupled surface polarization strategy for collaborative improve the photocatalytic CO 2 reduction performance.
研究领域:
材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
Food Bioscience
·
2024
·
IF 4.8
Li-Hong Yu,Rui Jiang,Cheng-Lin Yang,Yue-Hong Pang,Xiao-Fang Shen
Glyphosate , a widely used herbicide due to the broad-spectrum and high-efficiency properties, has the potential to accumulate in the human body via agricultural food and water sources throughout the food chain. Its safety for both human health and aquatic ecosystems remains a topic of significant debate. In this study, the presence of glyphosate could be directly detected through a notable colorimetric change in an aqueous solution. For this purpose, a silver nanoparticle-functionalized copper porphyrin metal-organic framework (AgNPs/Cu-TCPP) nanozyme was conveniently prepared for colorimetric sensing of glyphosate. The as-synthesized nanozyme that modified AgNPs with Cu-TCPP metal-organic framework as the precursor, has excellent peroxidase mimetic activity and specific recognition performance of glyphosate. The nanozyme demonstrated the ability to catalyze the oxidation of 3,3,5,5-tetramethylbenzidine (TMB) using H 2 O 2 , resulting in a marked change in color. When glyphosate was added, which bonded with Cu 2+ , led to the occupation of the surface-active sites of the nanozyme, thereby making its catalytic performance ineffective. The concentration of glyphosate exhibited a linear range spanning from 2 to 400 μmol L −1 , and the limit of detection was 0.67 μmol L −1 (S/N = 3). The colorimetric sensing approach employing AgNPs/Cu-TCPP nanozyme exhibits remarkable selectivity and reproducibility, enabling the detection of real samples with recovery rates of 98.3%–103.5%, indicating its potential applicability in safeguarding water and food quality.
研究领域:
环境科学
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分析化学
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生物医学
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产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2024
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IF 8.4
Chennan Zhao,Xiuying Yang,Boyu Zhao,Zezhou Zhang,Wenjuan Guo,Ao Shen,Meiqi Ye,Wenyi Wang
In order to achieve effective separation and rapid degradation of toxic dyes, copper porphyrin/graphene oxide (Cu-TCPP/GO) composite membranes with structural stability were prepared. In this process, Cu-TCPP MOF was successfully synthesized by hydroxyl double salt active intermediates, which grow along the GO surface in different directions (the main direction is perpendicular to the GO base layer). The results showed that the CM3 composite membranes (GO-MOF: CNT = 2.5 : 1, wt%, PES substrate membrane) exhibited good membrane properties (permeation flux reached 26.24 L·m −2 ·h −1 ·bar −1 , with over 99 % rejection of Congo red) and excellent conductivity with R CM3 of 3.73 kΩ·sq −1 . Consequently, highly effective and rapid degradation of organic dyes was accomplished, e.g., 99.5 % of the Congo red was degraded in 10 min, and 94.8 % for methylene blue in 30 min, indicating a harmless treatment of dye wastewater. Furthermore, the composite membrane has maintained excellent stability and degradation ability in multiple cycle tests. The GO-MOF composite membrane provides a treatment method and design reference for clean water resources and environmental protection.
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
MICROCHIMICA ACTA
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2018
·Vol. 185
·期 8
·1-8
·
IF 5.705
Song Xinjian,Fu Ju,Wang Juan,Li Chunya,Liu Zhihong
Graphene nanosheets (GSs) were prepared via liquid-phase non-covalent exfoliation of graphite powder in N , N -dimethylformamide under the assistance of copper(II) meso-tetra(4-carboxyphenyl)porphyrin tetrasodium salt Na 4 (CuTCPP). A glassy carbon electrode (GCE) was modified with a film of such GSs which, due to the good electrical conductivity of graphene and the electrocatalytic properties of Na 4 (CuTCPP), is capable of simultaneous determination of acetaminophen (AC) and dopamine (DA). The peak currents, best measured at voltage of 0.2 V (for DA) and 0.4 V (for AC; both vs. SCE), increase linearly in the 0.0024–3.6 μM and 0.004–7.6 μM concentration ranges, respectively. The detection limits are 0.8 nM for DA and 0.7 nM for AC. The sensor was successfully applied to the simultaneous determination of AC and DA in pharmaceutical preparations and spiked human serum. The results were in good agreement with those obtained for the same samples by HPLC.
Graphene nanosheets were prepared via a facile liquid-phase exfoliation of graphite with the assistance of copper(II) meso-tetra(4-carboxyphenyl)porphyrin tetrasodium salt. A graphene nanosheet-film modified glassy carbon electrode was fabricated to determine acetaminophen and dopamine through a simple and effective strategy.
研究领域:
分析化学
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电化学
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药物分析
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DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2020
·
IF 7.183
Shabab Hussain,Zheng Deng,Amin Khan,Peipei Li,Zhuoyi Li,Zhou Fang,Xinyi Wan,Xinsheng Peng
Applying different strategies, nanocomposite membranes formation from functionalized polymer(s) and compatible nanofillers is the most renowned way to make the membrane proton conductive without compromising their mechanical strength . Among different types of nanofillers, incorporating photothermal-responsive metal organic frameworks (MOFs) into the ion exchange polymer is the prominent strategy and has achieved advanced attention in smart protonic solids with versatile potential applications. In this work, ultrathin, highly ordered porous photothermal-responsive copper tetrakis(4-carboxyphenyl)porphyrin (Cu-TCPP) nanosheets are incorporated into sulfonated polystyrene (SPS) membranes as novel nanofillers. High loading and well dispersed Cu-TCPP nanosheets incorporated nanocomposite membranes are achieved and demonstrate photo-switchable protonic conductivity due to photothermal response of MOFs nanosheets to visible light. The nanocomposite membrane with highest MOFs content shows a high proton conductivity of 1.42 × 10 −4 S cm −1 at 95 °C at 95% RH. The altered photo-switch proton conductivity of nanocomposite membranes is attributed to the formation and breakage of H-bonding networks with water molecules in the channels of proton transport pathways by the local photothermal heated Cu-TCPP nanosheets. Furthermore, after incorporation of the Cu-TCPP nanosheets into SPS, not only the thermal stability is increased but also almost zero swelling is achieved in water, which reflects the nice durability of nanocomposite membranes. This photo-switchable proton conductivity of polymer proton conducting nanocomposite membranes with nice thermal stability and negligible swelling serves as a new gate for photo-switching proton conductive membranes, photosensors , photoswitches etc .
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2021
·
IF 6.707
Dingxuan Ma,Yaowen Zhang,Huihui Zhao,Kang Liu,Lei Wang
Porous organic frameworks (POFs) catalysts with a combination of the well-developed porosity and highly dispersed of active sites hold promise for boosting catalyst activity and selectivity. Among their many synthetic methods, one-step knitting strategies have gained superiority and potential for development. Here, two copper porphyrin based microporous polymers (SC-Cu and FC-Cu) were directly synthesized through Scholl coupling reaction and Friedel-Crafts alkylation reaction respectively, which possess high surface area and efficient catalytic performance for styrene oxidation. Moreover, the hierarchical pores of SC-Cu gave it a unique catalytic performance with various olefins with excellent conversion rate. The insight achieved by this systematic analysis will contribute to the rational design of other POFs catalysts and widening extent of applications.
研究领域:
化学
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材料科学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 7
·4062-4072
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IF 11.301
Chunjiang Xu,Wanjun Sun,Yinjuan Dong,Congzhao Dong,Qiyu Hu,Baochun Ma,Yong Ding
Monoclinic bismuth vanadate (BiVO4), as a rising star in light-catching materials, has been researched in many fields, such as photoelectrochemical water splitting. To date, it is still noteworthy that the photogenerated electron–hole fast recombination and the slow kinetic rate impede the photoelectrochemical performance of BiVO4. Herein, a composite material of graphene oxide (GO) and molecular Cu porphyrin (CuTCPP)-modified BiVO4-based photoanode was prepared and characterized by various relevant physical tests. The photoelectrochemical performance measurements show that the assembled CuTCPP/GO/BiVO4 photoanode has an admirable photocurrent density value, which is far better than that of pristine BiVO4. Under AM 1.5G, 100 mW cm−2 Xe lamp, the photocurrent density of the CuTCPP/GO/BiVO4 photoanode reached 5.0 mA cm−2, which was 4-fold enhancement than that of pristine BiVO4. In addition, the optimized CuTCPP/GO/BiVO4 photoanode displays an evident negative shift of the onset potential of around 400 mV, and it presents a fascinating charge injection efficiency of 92%. The fine photoelectrochemical performance is due to more active sites provided by the molecular catalyst CuTCPP and excellent electrical conductivity and fast charge separation rate offered by GO. Furthermore, GO and CuTCPP form strong conjugate systems, which effectively inhibit the photogenerated electron–hole recombination. These results offer a new concept of assembling a composite photoanode for efficient energy devices.
研究领域:
材料科学
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能源科学
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DOI
高影响因子
CRYSTAL GROWTH & DESIGN
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2021
·
IF 4.076
Zhijie Tao,Renfu Li,Xiao Xu,Aihui Cao,Weifeng You,Ying He,Weifeng Huang,Longtian Kang,Xueyuan Chen
A variety of organic semiconductor nanostructures have been already reported for photoelectric applications; however, there are a few systematic studies on the dependence of their photocurrent on nanostructures. Here, 0D, 1D, 2D, and 3D nanostructures of 5,10,15,20-tetrakis(4-carboxyphenyl) porphyrin copper (CuTCPP) are successfully constructed via liquid-phase chemical methods. Structural characterization shows that 0D and 1D nanostructures should result from the π–π stacking of CuTCPP molecules, while 2D and 3D ones are mainly from the in-plane aggregation via the linkage of −COOH with the Cu ion. The photoelectric properties of CuTCPP-based nanostructures are investigated to evaluate the effect of shape, size, and structure. A huge difference in photocurrent response is found, as compared to the raw material (0.09 μA/cm2) and 0D (0.17 μA/cm2), 1D (2.24 μA/cm2), 2D (0.4 μA/cm2), and 3D (0.93 μA/cm2) nanostructures. Further study reveals that the 1D nanostructure exhibits the lowest impedance and the longest exciton lifetime, strongly indicating that the photocurrent of the metal porphyrin nanostructure should be mainly limited in an in-plane exciton with a shorter lifetime than in an intermolecular one. This work provides a clear strategy to design molecule-based photoelectric nanomaterials.
研究领域:
材料科学
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光电子学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2024
·
IF 11.2
Wenjie Zhou,Mingqiang Yang,Yingzhi Chen,Qihang Jing,Qinglin Fang,Yachao Yan,Lu-Ning Wang
Redox-active organic electrode materials have emerged as a promising alternative to inorganic counterparts in view of their low cost and easily tunable chemical/electrical/mechanical properties. However, practical issues of using these materials remain as a consequence of their electrically insulating character, limited specific capacity and cyclability. Porphyrin, a highly conjugated macrocyclic organic compound, is an appealing candidate due to its multi-electron transfer mechanism and its small energy barrier for rapid electron transfer. Here, a new class of copper(II) meso-tetra(4-pyridyl) porphyrin (CuTPyP) was obtained by introducing copper ions into free-base H 2 TPyP for regulation of redox activity and prevention of material dissolution, and was further hosted on conducting reduced graphene oxide (rGO) to enhance the redox activity. The resultant CuTPyP/rGO composites hence demonstrated a high reversible discharge capacity of 152 mAh g −1 after 200 cycles, with a capacity retention rate of 84.5 % at 0.5 C, vastly superior to the bare CuTPyP (113 mAh g −1 ) and free-base H 2 TPyP (62 mAh g −1 ). A deep insight into the chemical states showed that electron-donating N atoms in the tetrapyridyl subunits behaved as the main charge storage sites during the charge and discharge state along with part contribution from the Cu(II)/Cu(I) conversion center. The high and stable electrochemical performance makes porphyrins a potential choice for real-use cathodes for long-term organic alkali metal batteries.
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
Cell Reports Physical Science
·
2020
·
IF 0
Yinzheng Zhou,Shenghua Chen,Shibo Xi,Zhitong Wang,Peilin Deng,Fan Yang,Youjia Han,Yuanjie Pang,Bao Yu Xia
Porphyrin-based catalysts are promising for electrochemical carbon dioxide (CO 2 ) conversion. We report here molecular Cu-porphyrin-constructed porous frameworks for efficient CO 2 reduction. This framework catalyst has a high Faradaic efficiency of 73.6% and a partial current density of 7.5 mA cm −2 at −1.4 V versus RHE for the selective production of hydrocarbons, while only carbon monoxide is generated on the Cu-porphyrin building blocks. Experimental results demonstrate that this porous framework has a high CO 2 absorption capability, and abundant copper-active sites account for the efficient CO 2 conversion. Moreover, finite-element simulations reveal that the spatial confinement of CO intermediates in the porous framework are critical for the efficient generation of hydrocarbons. This work may offer insights into designing efficient catalysts for CO 2 reduction to valuable products.
研究领域:
化学
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材料科学
·
环境科学
✓ 已验证
DOI
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Xiao-Zhen Feng,Kun-Zhi Wang,Ke-Hang Song,Guo-Cheng Han,Bing-Lun Li,Heinz-Bernhard Kraatz
Moxifloxacin (MOX) and gatifloxacin (GAT) are structurally similar and possess close oxidation peak potentials, making it difficult for simultaneous detection by electrochemical methods. To address this, an electrochemical sensor was constructed with reduced graphene oxide (rGO) and copper porphyrin complex (Cu-TCPP), achieving signal amplification and simultaneous detection of MOX and GAT. The linear relation range from 5.00 to 600.00 μmol·L −1 for MOX (LOD is 1.34 μmol·L −1 ) and 10 to 300 μmol·L −1 for GAT (LOD is 0.59 μmol·L −1 ). When applied to water samples, it achieved recoveries of 100.09–112.02 % with a relative standard deviation (RSD) of less than 6 % for MOX, and 97.27–110.72 % with an RSD of less than 4 % for GAT. Further calculations indicated that the electro-oxidation of GAT involved two protons and two electrons.
研究领域:
分析化学
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药物分析
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2023
·Vol. 16
·期 5
·6290-6297
·
IF 9.9
Cai Jiahao,Song Shizheng,Zhu Lijie,Lu Qipeng,Lu Zong,Wei Yanying,Wang Haihui
A kind of two-dimensional (2D) metal-organic framework (MOF) material, Cu-meso-tetrakis (4-carboxyphenyl) porphine (Cu-TCPP) nanosheets with wrinkled and flat morphologies are used as building blocks to assemble membranes by vacuum filtration (VF) and electrophoretic deposition (EPD) as energy-efficient nanofiltration (NF) membranes to remove dyes from water. Since the nanosheets with wrinkled structure can provide additional water transport channels, thereby increasing the water permeance, in the premise of a high rejection (> 97.0%) for the dye brilliant blue G (BBG) (1.60 nm × 1.90 nm), the water permeance of the membrane assembled by the wrinkled nanosheets (∼ 1170 nm) is about 4 times that of the membrane assembled by the flat nanosheets (∼ 530 nm), reaching 16.39 L·m −2 ·h −1 ·bar −1 . Additionally, the use of the relatively flat nanosheets and the membrane preparation method of electrophoretic deposition is more conducive to stack nanosheets orderly and reduce defects. Therefore, the water permeance of the membrane prepared by EPD (∼ 1170 nm) with flat nanosheets is about twice that of the membrane prepared by VF (∼ 530 nm), achieving 9.40 L·m −2 ·h −1 ·bar −1 with similar rejection (> 97.0%) of dye evans blue (EB) (3.10 nm × 1.20 nm). Furthermore, these membranes still exhibit good separation performance at high pressure of 0.6 MPa. Nanosheets with diverse structures and various membrane fabrication processes provide new directions for the separation performance optimization of 2D MOF materials for water purification.
研究领域:
材料科学
·
环境工程
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纳米技术
·
水处理
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）