LANGMUIR
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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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DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
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2025
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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
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2020
·Vol. 27
·期 31
·39186-39197
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IF 3.056
Zhao Shiyin,Li Shun,Zhao Zhicheng,Su Yiping,Long Yangke,Zheng Zuquan,Cui Daling,Liu Yong,Wang Chunfei,Zhang Xuanjun,Zhang Zuotai
Adsorption and photocatalysis are promising strategies to remove pollutants of dyes and antibiotics from wastewater. In this study, we demonstrate a rapid microwave-assisted hydrothermal route for the assembly of 2D copper-porphyrin Metal-Organic Frameworks (Cu-TCPP MOFs) within 1 h. The resulting 2D Cu-TCPP nanosheets with excellent crystallinity and a large surface area (342.72 m 2 /g) exhibited outstanding adsorption performance for typical dyes with adsorption capacities of about 185 mg/g for rhodamine B, 625 mg/g for methylene blue, and 290 mg/g for Congo red, respectively, as well as for representative antibiotics with adsorption capacities of about 130 mg/g for oxytocin, 150 mg/g for tetracycline, and 50 mg/g for norfloxacin, respectively. Meanwhile, the as-prepared 2D Cu-TCPP showed good photocatalytic degradation activity of pollutants after adsorption under irradiation by visible light, reaching removal efficiencies of 81.2 and 86.3% toward rhodamine B and norfloxacin, respectively. These results demonstrate the promising potential of 2D Cu-TCPP for use in the removal of contaminants from wastewater.
研究领域:
环境科学
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材料科学
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化学工程
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纳米技术
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DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
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2025
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IF 6.9
Li Ma,Xiong Zhao,Zijuan Luo,Zhenzhen Chen,Jinjia Wei,Nanjing Hao
Porphyrin-based metal–organic frameworks are widely utilized in the photocatalytic field owing to their unique photosensitive properties. Whereas controllable substrate morphology and uniform distribution of the noble metal nanoparticles still remain challenging in traditional synthesis. Herein, Cu-TCPP@MOFs and PtNPs/Cu-TCPP@MOFs with flower-like architecture were produced via continuous flow strategy and double spiral microreactor efficiently and controllably. The results revealed that 5.2 wt% Pt nanoparticles with 2.68 nm were embedded evenly on the Cu-TCPP@MOFs within 5 min. Compared to the Cu-TCPP@MOFs, the PtNPs/Cu-TCPP@MOFs exhibited much superior catalytic performance for rhodamine B (RhB) degradation under visible-light-driven, the reaction rate constant and catalytic activity parameter increased from 0.010 to 0.027 min −1 , and 0.03 to 11.25 s·g −1 , respectively. The free radical capture experiments revealed that h + , ·OH, and ·O 2 − played a synergistic role in the RhB degradation, whereas ·OH plays the most prominent effect. The reasonable degradation pathways of RhB were proposed by combining the density functional theory (DFT) with liquid chromatography mass spectrometry (LC-MS) investigation. This work not only provided insights into the design and controllable preparation of high-performance photocatalysts but also provided an effective strategy for degrading organic pollutants in the water environment, which poses significant environmental and economic benefits.
研究领域:
材料化学
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环境科学
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光催化
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纳米技术
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分析化学
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理论计算化学
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产品关联
DOI
高影响因子
TALANTA
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2026
·
IF 6.7
Wenli Chen,Renjie Li,Wenxi Wang,Kaixi Yin,Xiandeng Hou,Li Wu
A facilely fabricated Ag/Cu-TCPP was developed as a SERS substrate. • Saliva uric acid (UA) was quantified with 0.04 μM detection limit. • Synergy in molecular enrichment and EM enhancement improved SERS sensitivity. • Time-resolved monitoring of UA fluctuations in real saliva samples was achieved. Surface-enhanced Raman scattering (SERS) methods offer high sensitivity for uric acid (UA) detection, but efficient molecular enrichment and reliable analysis in complex biological matrices remain challenging. Here, we developed an Ag/Cu-TCPP SERS platform for noninvasive determination of UA in saliva. The platform combined the electromagnetic enhancement provided by Ag nanoparticles (Ag NPs) with the molecular enrichment capability of Cu-TCPP. Density functional theory calculations further indicated that UA can be enriched on Cu-TCPP through weak Cu···O quasi-coordination between the UA carbonyl oxygen and exposed Cu centers, accompanied by interfacial charge redistribution. Consequently, the platform achieved a low detection limit of 0.04 μM and a wide linear range of 0.1–1000 μM. Beyond conventional single-point determination, the platform enabled time-resolved assessment of salivary UA concentration, revealing temporal fluctuations under physiological and feeding-related conditions. These results highlight the potential of MOF-integrated SERS platforms for noninvasive monitoring of small-molecule biomarkers. Download: Download high-res image (242KB) Download: Download full-size image
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Siyuan Wang,Shuda Liu,Shuyun Meng,Yuqing Li,Na Dong,Zuo Chen,Wenjia Li,Dong Liu,Tianyan You
Microcystin-LR (MC-LR), a toxic cyanotoxin, poses severe risks to environmental and human health with its efficient detection urgently required for water safety monitoring. Here, we reported a photoelectrochemical (PEC)-surface-enhanced Raman scattering (SERS) dual-mode aptasensor based on WS 2 /copper(II) meso-tetra(4-carboxyphenyl) porphyrin (WS₂/Cu-TCPP) MOFs Z-scheme heterojunction with a single laser source to produce photocurrent and SERS signals. To access interference between PEC and SERS signals, their correlation was systematically examined by applying a certain bias voltage. This bias voltage drives photogenerated electrons into external circuit, thereby enhancing carrier separation efficiency and suppressing the return of Raman photons to the ground state. In this way, a complementary “PEC-enhancement/SERS-attenuation” signal pattern can be achieved to allow better reliability for biosensing. The presence of ascorbic acid (AA) replicated an identical response to confirm competitive coupling between PEC and SERS derived from WS₂/Cu-TCPP heterojunction. Based on this signal transduction mechanism and localized generated AA by magnetic separation, a dual-mode aptasensor was developed for MC-LR detection with superior sensitivity and interference resistance. It allowed a linear range of 0.01–50 ng mL −1 and a detection limit of 0.14 pg mL −1 for MC-LR as well as high selectivity and stability for real water samples analysis. This work should offer an efficient paradigm for precise analysis of hazardous pollutants in complex matrices.
研究领域:
环境监测
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分析化学
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生物传感器
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纳米材料
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水质检测
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产品关联
DOI
高影响因子
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