NEW JOURNAL OF CHEMISTRY
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2023
·Vol. 47
·期 44
·20336-20343
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IF 3.3
Meihui Lu,Aichen Dong,Xinyang Li,Xuanqi Liu,Ziqing Zhang,Tao Tian,Liqiang Jing
Semiconductor photocatalysis is a potential solution to meet energy needs with green and inexhaustible solar energy. However, designing efficient and stable photocatalysts is a challenging task due to the limited ability to effectively separate electrons and holes. In this paper, by using a straightforward ethanol dispersion technique, we were able to combine ultrathin layered Cu-TCPP MOFs with g-C3N4 nanosheets, resulting in the creation of an extremely effective nano-composite photocatalyst with exceptional UV-vis activity. CT/CN heterojunctions displayed remarkable photocatalytic efficacy for the production of H2, with 3CT/CN showcasing a five-fold enhancement in photoactivity as compared to the unadorned g-C3N4. Based on the results of photoluminescence spectroscopy, electrochemical impedance spectroscopy, and electrochemical reduction, the considerably improved charge transfer and separation, together with the possible catalytic capability of uniformly distributed metal nodes in Cu-TCPP, are believed to be the underlying reason for the observed exceptional photoactivity. After thorough analysis, a potential process for charge transfer and segregation between g-C3N4 and Cu-TCPP has been suggested.
研究领域:
材料科学
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能源化学
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光催化
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2021
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IF 7.312
Shabab Hussain,Xinyi Wan,Zhuoyi Li,Xinsheng Peng
The major obstacle in membrane filtration technology is the membrane fouling, which not only decreases the membrane efficiency, but also enhances its operational cost. In order to fabricate a membrane with antifouling characteristics, potential nanofillers have been added to the engineering polymer(s) to make a composite to improve the membrane efficiency. Herein, we incorporate porphyrin-based ultrathin, highly ordered porous photothermal responsive copper tetrakis(4-carboxyphenyl)porphyrin (Cu-TCPP) nanosheets as a novel nanofillers into the polysulfone (PSf) matrix. High loading (6 wt%) and well dispersed Cu-TCPP nanosheets incorporated polysulfone nanocomposite (Cu-TCPP/PSf) ultrafiltration membranes are prepared via non-solvent induced phase inversion. The Cu-TCPP/PSf composite membranes demonstrate pronounced antifouling and antibiofouling potential along good separation performance. The nanocomposite membranes demonstrate photo-induced pore tuning due to the local heating of photothermal Cu-TCPP nanosheets by visible light, which further improves the membrane separation efficiency. The Cu-TCPP/PSf composite membrane with 6 wt% Cu-TCPP nanosheets enhances the pure water permeance from 23.42 to 260.61 L·m −2 ·h −1 ·bar −1 , with improved antifouling potential, precise permeance recovery ratio of 99.13% after three cycles, and good separation performance for 100 and 200 nm particles. Considering relatively moderate cost, facile processing, tunable porosity, durable and good mechanical strength along restrained swelling, the Cu-TCPP/PSf membranes are considered as potential candidate as antifouling/antibiofouling ultrafiltration membranes for water purification.
研究领域:
材料科学
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环境工程
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膜技术
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DOI
高影响因子
Materials
·
2022
·Vol. 15
·期 13
·4625
·
IF 3.748
Liudi Ji,Qi Wang,Lianhui Peng,Xiaoyu Li,Xiaoming Zhu,Peng Hu
It is quite important to develop sensitive, simple, and convenient methods for the simultaneous determination of Hydroquinone (HQ) and Catechol (CC) due to their wide existence, the difficulty of degradation, and the high toxicity. Herein, Cu-TCPP nanosheets were prepared inN,N-dimethylformamide (DMF) through the solvent exfoliation method. The morphology and electrochemical performance of Cu-TCPP were characterized, revealing its stacked sheet structure with abundant pores, a fast electron transfer ability, and a large electrode active area. Using Cu-TCPP nanosheets as the sensitive material to modify the glassy carbon electrodes (Cu-TCPP/GCEs), it was found that they had an obvious enhancement effect on the electrochemical oxidation currents of HQ and CC. The signal enhancement mechanism was explored. The Cu-TCPP nanosheets not only enhanced the accumulation abilities of HQ and CC, but also improved their apparent catalytic rate, displaying high sensitivity for HQ and CC. The values of the detection limit were calculated to be 3.4 and 2.3 nM for HQ and CC. A satisfactory recovery was obtained when this method was used in measuring HQ and CC in the water samples.Keywords:hydroquinone;catechol;electrochemical sensor;Cu-TCPP;2D MOFs
研究领域:
环境科学
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分析化学
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DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2024
·
IF 12.2
Yongzhen Dong,Jiawei Liu,Liqin Kong,Dongyang Deng,Long Wu,Yiping Chen
This study presents the development of a magnetic relaxation switching (MRS) immunosensor for the sensitive detection of chlorpyrifos (CPF) with a signal amplification strategy using Pd/Cu-TCPP(Fe) hybrid nanosheets and polydopamine (PDA). Pd/Cu-TCPP(Fe) nanosheets, which exhibit high peroxidase-like activity and excellent storage stability, making them suitable replacements for natural enzymes in biosensors, are further functionalized with goat anti-mouse IgG (Ab 2 ) to construct an immunosensor. The mechanism relies on the competition between free CPF and the immobilized bovine serum albumin-CPF conjugates for antibody binding, which modulates the aggregation of magnetic nanoparticles (MNPs) that are related to the transverse relaxation time. The optimized immunosensor shows a linear detection range from 0.5 ng/mL to 100 ng/mL and a limit of detection (LOD) of 0.24 ng/mL, outperforming traditional enzyme-linked immunosorbent assay (ELISA) methods by achieving an LOD that is about 9 times lower. Real sample analysis demonstrates the applicability of the Pd/Cu-TCPP(Fe)-PDA-MRS immunosensor for detecting CPF residues in tomato and water samples, with results well consistent with those obtained using gas chromatography. This work highlights the potential of nanomaterials in enhancing the performance of MRS immunosensors for pesticide residue analysis in environmental and food safety monitoring.
研究领域:
分析化学
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环境科学
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食品安全
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DOI
PubMed
高影响因子
MOLECULES
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2023
·Vol. 28
·期 6
·2687
·
IF 4.6
Liudi Ji,Qi Wang,Xiaqing Gong,Jiamin Chen,Xiaoming Zhu,Zeyu Li,Peng Hu
Dopamine (DA) is an important neurotransmitter. Abnormal concentration of DA can result in many neurological diseases. Developing reliable determination methods for DA is of great significance for the diagnosis and monitoring of neurological diseases. Here, a novel and simple electrochemical sensing platform for quantitative analysis of DA was constructed based on the Cu-TCPP/graphene composite (TCPP: Tetrakis(4-carboxyphenyl)porphyrin). Cu-TCPP frameworks were selected in consideration of their good electrochemical sensing potential. The graphene nanosheets with excellent conductivity were then added to further improve the sensing efficiency and stability of Cu-TCPP frameworks. The electrochemical properties of the Cu-TCPP/graphene composite were characterized, showing its large electrode active area, fast electron transfer, and good sensing performance toward DA. The signal enhancement mechanism of DA was explored. Strong accumulation ability and high electrocatalytic rate were observed on the surface of Cu-TCPP/graphene-modified glassy carbon electrode (Cu-TCPP/graphene/GCE). Based on the synergistic sensitization effect, an ultrasensitive and simple DA electrochemical sensor was developed. The linear range is 0.02–100 and 100–1000 µM, and the detection limit is 3.6 nM for the first linear range. It was also successfully used in detecting DA in serum samples, and a satisfactory recovery was obtained.
研究领域:
神经科学
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生物医学工程
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分析化学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Jiawei Li,Zejing Chu,Shimeng Wang,Haipeng Liu,Biao Dong
Photodynamic antibacterial based on metal organic framework (MOF) structure shows broad application prospects. But it is limited by the problem of hypoxia in the bacterial microenvironment. The oxygen-producing nanozyme strategy is the key to solving the problem. In this work, MnO 2 oxygen-producing nanozyme was introduced on the basis of the metal organic framework Cu-TCPP to obtain Cu-TCPP@MnO 2 , which can produce oxygen synchronously during PDT. Moreover, under the excitation of 660 + 808 nm dual laser irradiation, the synergistic treatment of PDT, CDT and PTT was achieved. In the in vitro antibacterial experiment, the inhibition rate of Cu-TCPP@MnO 2 against Staphylococcus aureus under dual laser excitation can reach 99.9 %, and the biofilm removal rate is close to 80 %. The inhibition rate of Escherichia coli is also as high as 99.5 %. In the in vivo treatment of mouse models, the wound area was only 2.39 % after 13 days, achieving efficient sterilization, controlling inflammation and promoting tissue repair. This synergistic antibacterial strategy has shown remarkable effects in wound healing giving the material great potential for medical applications.
研究领域:
生物医学工程
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纳米医学
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感染与免疫
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DOI
高影响因子
FOOD CHEMISTRY
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2023
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IF 8.8
Liqin Kong,Feng Hong,Peng Luan,Yiping Chen,Yaoze Feng,Ming Zhu
The development of biosensors capable of assessing umami intensity has elicited significant attention. However, the detection range of these biosensors is constrained by the sensing components and strategies used. In this study, we introduce a novel competitive, ultra-high-sensitivity electrochemical impedance biosensor by utilizing composite nanomaterials and T1R1 as a composite signal probe. Pd/Cu-TCPP(Fe) had a substantial surface area, effectively enhancing the loading capacity of the T1R1 and thus augmenting the biosensor's recognition precision. Furthermore, the Pd/Cu-TCPP(Fe) elevated peroxidase-like activity catalyzed the formation of insoluble precipitates of 4-CN, resulting in cascaded amplification of the impedance signal. The remarkable catalytic activity of the composite signal probe endowed the biosensor with exceptional analytical performance, featuring a detection limit of 0.86 pg/mL and a linear detection range spanning from 10 to 10000 pg/mL. Successful application of the biosensor for umami substance detection in fish was also demonstrated, signifying its substantial potential in food-flavor evaluation.
研究领域:
生物传感器
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电化学
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食品科学
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分析化学
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DOI
PubMed
高影响因子
ACS Biomaterials Science & Engineering
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2022
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IF 5.395
Le Gao,Yibo Song,Jun Zhong,Xiaofeng Lin,Shu-Feng Zhou,Guowu Zhan
Two-dimensional (2D) metal–organic frameworks (MOFs) could serve as multifunctional nanoplatforms to load small-molecule drugs and enzyme-mimicking nanoparticles (NPs) with a high efficiency for combined cancer therapy. Herein, we have prepared novel 2D Cu-tetrakis (4-carboxyphenyl) porphyrin (TCPP) nanosheets with an average thickness of 1.2 ± 0.1 nm using Cu2O nanocubes (50 nm) as a template and solid copper ion supplier. Cu2O nanocubes can be consumed and hybridized with the obtained Cu-TCPP, depending on the molar ratio of Cu2O and TCPP linker. The resultant Cu2O/Cu-TCPP could serve as nanoplatforms for co-loading of Pt and Au NPs to construct multifunctional Cu2O/Cu-TCPP/(Pt–Au) nanomedicines, which showed a superior anticancer effect via multiple therapeutic modes. For instance, Cu(II)-TCPP can produce 1O2 in the presence of acidic H2O2 by the Russell mechanism and the intrinsic Cu(I) ions (derived from the residual Cu2O) could mediate a Fenton-like reaction in tumorous tissues to generate toxic hydroxyl radicals (•OH). Moreover, the loaded Pt NPs with catalase (CAT)-mimic activity could decompose hydrogen peroxide (H2O2) into O2 within the tumor cells, increasing the local O2 concentration, modulating the tumorous hypoxia atmosphere, and promoting the O2-dependent glucose oxidation reaction. Furthermore, Au NPs with glucose oxidase (GOx)-mimic activity could accelerate the consumption of glucose and cut nutrient supply to induce starvation therapy. Consequently, our designed 2D MOF-based therapeutic nanomedicines would be a promising candidate for future smart and combined cancer therapy.
研究领域:
纳米技术
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材料科学
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癌症治疗
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生物医学工程
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化学生物学
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DOI
PubMed
高影响因子
LANGMUIR
·
2023
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IF 3.9
Wenjing Zhu,Zhinan Xia,Bingfeng Shi,Changli Lü
A series of 2D M(Cu, Zn, Co, and Mn)-TCPP MOFs/TiO2 binary nanocomposites (TCPP = tetrakis(4-carboxyphenyl)porphyrin) were constructed by solvothermal in situ loading of flaky TiO2 on the surface of 2D metal–organic frameworks (MOFs). The influence of different coordination metals on the catalytic activity was studied, and it was found that the 2D Cu-TCPP MOFs/TiO2 nanocomposite exhibited the best photo-Fenton performance. The superior property can be attributed to the high absorption coefficient and ultrathin two-dimensional structure of the 2D Cu-TCPP MOFs nanosheets. Meanwhile, the 2D Cu-TCPP MOFs/TiO2 II heterostructure can effectively promote the separation and transfer of photoformed carriers. Moreover, under visible irradiation, the optimized 2D Cu-TCPP MOFs/TiO2 composite can convert 99.9% of Cr(VI) to Cr(III) within 60 min with methanol as the hole scavenger at pH 3.14. Also, the photocatalytic performance of 2D Cu-TCPP MOFs/TiO2 was maintained after five reaction cycles. Furthermore, the proposed visible-light-driven photocatalysis mechanism of the 2D Cu-MOFs/TiO2 composite was reasonably derived according to experimental results. This study demonstrates the potential of building efficient TiO2-based visible light photocatalysts with 2D metal-porphyrin MOFs.
研究领域:
材料科学
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环境科学
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化学
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产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
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2026
·
IF 6.6
Qing Huang,Chen-dong Ling,Yan-li Zhang,Wen-feng Zhuge,Cui-zhong Zhang,Jin-yun Peng,Chao-guang Li
Considering the crucial role of riboflavin in human physiological functions, developing a rapid and sensitive detection method is essential in fields such as food and drug analysis. Electrochemical sensing is a powerful method for the determination of riboflavin. Herein, in this study, metal organic framework (MOF) microflower Cu-TCPP was prepared by solvothermal method using trifluoroacetic acid (TFA) as the modulator and polyvinylpyrrolidone (PVP) as the structural guide. Then followed by the fabrication of a novel electrochemical sensor for riboflavin detection. The microflower-like morphology of Cu-TCPP provided numerous active sites for riboflavin oxidation. Meanwhile, electrochemical results demonstrated that the Cu-TCPP enhanced the electron transfer efficiency and electroactive surface area of GCE, exhibiting excellent catalytic performance. Under optimized detection conditions, square wave voltammetry (SWV) test showed that the Cu-TCPP sensor exhibited a linear range for riboflavin of 1.00 × 10 −8 to 9.91 × 10 −5 M, with a low limit of detection (LOD) (1.70 × 10 −9 M) (S/N = 3). The sensor possessed good selectivity, excellent anti-interference capability, and outstanding stability. Additionally, the sensor was successfully employed for riboflavin detection in real samples, and the spiked recovery rate ranged from 98.85% to 102.86%, indicating its significant application value in real sample analysis.
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DOI
高影响因子
Green Energy & Environment
·
2026
·
IF 16.7
Xiangyu Guo,Changxue Xie,Xinyao Dong,Han Xiao,Huiye Wei,Kaidi Mao,Tongan Yan,Yunpan Ying,Huina Wang,Chongli Zhong
Highly c-oriented Cu-TCPP ultrathin membrane was prepared through in-situ conversion method. • Green solvents and minimal amount of ligand were used in membrane preparation process. • The membrane can efficiently discriminate linear molecules from non-linear and non-planar molecules. • The shape-based separation mechanism was verified by DFT calculation. Efficient separation of molecules with similar molecular weights is highly demanded in chemical and pharmaceutical industries, yet still hard to achieve with traditional polymer-based membranes. Metal-organic framework (MOF) membranes, especially ultrathin two-dimensional (2D) MOF membranes, offer a good opportunity for realizing these separations. However, current 2D MOF membranes are mainly prepared through the deposition method, which can bring uncertainty to the pore channels, compromising the separation ability. This work reports the preparation of a highly c-oriented ultrathin Cu-TCPP membrane through an electrostatic-assisted in-situ oriented transformation strategy using electrostatically adsorbed copper hydroxide nanostrands as a precursor layer. The resultant membrane has explicit transport channel to be the pores of Cu-TCPP, which enables the efficient discrimination of linear molecules from non-linear and non-planar molecules with similar and even lower molecular weights. Both the experimental work and density functional theory calculations confirm the sieving effect of the Cu-TCPP membrane towards two model molecules (methyl orange and hematoxylin). This work provides a paradigm for fully utilizing the potential of MOF membranes in the precise separation of molecules with similar molecular weights. Effective nanofiltration separation of molecules with similar molecular weights based on steric shape difference is enabled by the ultrathin c-oriented Cu-TCPP membrane prepared through a green and facile electrostatic assisted in-situ conversion strategy Download: Download high-res image (321KB) Download: Download full-size image
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Xin Xu,Ximing Guo
Dopamine (DA), uric acid (UA), and ascorbic acid (AA), three similar electroactive biological small molecules, generally coexist in human serum, causing serious interference when detected separately. In order to realize the simultaneous detection of DA, UA, and AA, three similar electroactive biomolecules, through the electrochemical sensing platform based on 2D Cu-TCPP MOFs nanofilms, DA molecules were successfully detected and optimized the detection conditions according to our previous detection methods for UA and AA. The results displayed the perfect electrochemical response signal of DA, excellent linear correlation between current intensity and DA concentration, LODs, repeatability, and stability. The electrochemical potential (E pa ) of UA oxidation peak was intermediate between E pa of AA and DA oxidation peak, the response current intensity of UA oxidation peak continuously decreases with increases of UA concentration. The response current intensity of DA and AA oxidation peak on both sides of UA gradually increases with the increase of DA and AA concentration. On the other hand, there is a significant difference in the oxidation potential difference between adjacent substances DA, UA, and AA (ΔE AA-UA = 141 mV, ΔE UA-DA = 167 mV, and ΔE AA-DA = 308 mV), which will play a decisive role in the simultaneous detection of DA, UA, and AA based on 2D Cu-TCPP MOFs/GCE electrochemical sensing platform. Therefore, the electrochemical platform based on 2D Cu-TCPP MOFs nanofilms is more conducive to the simultaneous detection of DA, UA, and AA with high selectivity, ultra-sensitivity, and ultra-distinguishability.
研究领域:
分析化学
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生物医学工程
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电化学
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DOI
高影响因子
危险品化学品经营许可证（带存储）