FOOD CHEMISTRY
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2022
·
IF 9.231
Ying Wang,Meng Zhang,Tong Bu,Feier Bai,Shuang Zhao,Yuanyuan Cao,Kunyi He,Haiyu Wu,Jia Xi,Li Wang
In this work, a highly sensitive immunochromatographic test strip (ITS) based on Scandium-Tetrakis (4-carboxyphenyl) porphyrin (TCPP) metal–organic framework nanocubes (ScTMNs) was developed for ultrasensitive and facile visual determination of imidacloprid (IDP). TCPP as the porphyrin-based planar ligand and Sc 3+ as the metal center were applied to form the ScTMNs via coordination chelation. Giving the credit to its excellent optical characteristics, strong affinity with monoclonal antibodies, and favorable biocompatibility, the ScTMNs was selected as a signal tag. Under optimized conditions, the ITS exhibited a great liner relationship in the range of 0.04–3 ng/mL and the detection limit was 0.04 ng/mL for the IDP detection. Additionally, IDP was successfully detected in tomatoes, millet, corn and carrot samples with satisfied recoveries. To the best of our knowledge, this is the first time that ScTMNs have been used in immunochromatography which are expected to have potential applications in detection of other substances.
研究领域:
食品科学
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分析化学
·
生物医学工程
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Lu Tao,Xiaojuan Wang,Fadong Wu,Binghui Wang,Congjie Gao,Xueli Gao
Monovalent cation permselective membranes (MCPMs) manifest remarkable effectiveness and potential in lithium extraction whereas facing the challenge to achieve high permselectivity and high Li + permeability simultaneously. In this work, Zn-TCPP, a kind of two-dimensional nanosheet with abundant negative charges, was successfully synthesized via surfactant-assisted method and introduced into surface cross-linked SPES membrane to fabricate MCPMs. The physicochemical properties, electrochemical properties and Li + /Mg 2+ separation performance of resulted MCPMs were systematically estimated. As ions passing through the membrane, dense PVA/GA crosslinked layer separated Li + and Mg 2+ by pore-size sieving effect. Afterwards, uniformly distributed Zn-TCPP nanosheets with rich negative charges and physically adsorbed water molecules elevated the charge density and water content in the membrane and thus expedited Li + transporting. Therefore, high Li + /Mg 2+ permselectivity ( P Mg 2 + Li + = 8.99) and Li + permeation flux ( J Li + = 9.12 × 10 −9 mol cm −2 ∙s −1 ) were obtained. Furthermore, membrane surface resistance was reduced from 108.99 Ω cm 2 to 24.12 Ω∙cm 2 . This study points out the feasibility of the new method for accelerating monovalent ion transport and alleviating the restriction between ion permeation and permselectivity in selective ion exchange membranes.
研究领域:
材料科学
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环境工程
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Sustainability
·
2025
·Vol. 17
·期 20
·9203
·
IF 3.3
Ping Zhu,Teng Xie,Shuangshuang Gong
As a common substitute for brominated flame retardants (BFRs), organophosphate flame retardants (OPFRs) have been insufficiently studied in terms of their ecotoxicological impacts on plastic biodegradation processes in invertebrate systems. This study investigated the impact of an OPFR, tris (1-chloro-2-propyl) phosphate (TCPP), on the dietary behavior and gut microbiota ofGalleria mellonella(Linnaeus, 1758) (Lepidoptera: Pyralidae) larvae during the biodegradation of rigid polyurethane (RPU), as well as the fate of TCPP. The results show that TCPP interfered with larval feeding activity, hindered the nutritional conversion of food, and triggered metabolic compensation through lipid reserve catabolism. Notably, mass balance analysis revealed that bioaccumulation of TCPP was negligible, with most of it excreted through frass, indicating limited biodegradation of this organophosphate ester. 16S rRNA sequencing indicated that TCPP drove the reconstruction of gut microbiota in larvae and identified three dominant bacteria ofMorganellaceae,Enterobacteriaccae, andStaphylococcaceaefamilies, as well as non-dominant bacteria ofKlebsiellaandVagococcaceaefamilies, as characteristic microbiota contributing to RPU and TCPP biotransformation. This study serves as a reminder to pay attention to the toxicity, migration, and transformation of OPFRs in biodegradable plastics. Notably, TCPP, a dominant chlorinated OPFR, exhibits environmental persistence with limited biodegradability and low bioaccumulation, traits which hinder the spontaneous attenuation of plastic waste in ecosystems and undermine the sustainability of the plastic lifecycle. This work emphasizes the need to integrate risk assessments of specific additives into the plastic waste management framework and to develop targeted detoxification strategies for promoting a sustainable material lifecycle.
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Yu Gao,Daohong Zhang,Lihong Su,Chengke Wang
Synergistic Fe 3 O 4 @TCPP-Ru nanozyme with enhanced peroxidase and oxidase-like activity. • Dual-enzyme cascade for sensitive hypoxanthine detection. • Accurate shrimp freshness monitoring versus HPLC. • Portable hydrogel-smartphone platform for hypoxanthine on-site detection. The quality and safety of aquatic products are intrinsically linked to their freshness. Hypoxanthine (HX), a primary biochemical metabolite of adenosine triphosphate, serves as a crucial biomarker for early spoilage and an indicator of aquatic food freshness. In this study, a reliable, sensitive, and convenient colorimetric sensing platform was developed for HX detection based on a dual-enzyme cascade system involving xanthine oxidase and a novel peroxidase-mimicking nanozyme, Fe 3 O 4 @TCPP-Ru, which was synthesized by modifying Fe 3 O 4 nanoparticles with tetra(4-carboxyphenyl)porphyrin (TCPP) and in situ anchoring Ru nanoclusters, resulting enhanced adsorption capacity and superior peroxidase-like activity. During detection process, HX is oxidized by XOD to produce H 2 O 2 , which triggers the Fe 3 O 4 @TCPP-Ru catalyzed oxidation of 3,3′,5,5′-tetramethylbenzidine substrate into a blue-colored product, enabling the colorimetric detection of HX. Under optimal conditions, HX can be detected in a linear range of 2.5–150 μM with a limit of detection of 1.72 μM. This method was also applied to monitor shrimp freshness, showing satisfactory recoveries (92.95%–110.69%) and good agreement with HPLC analysis. Furthermore, an integrated hydrogel-assisted colorimetric sensor was developed for smartphone-based point-of-care testing, allowing for rapid, visual, and instrument-free quantification of HX in shrimp samples stored in different temperatures and time. Our proposed Fe 3 O 4 @TCPP-Ru platform offers a promising strategy for on-site food safety monitoring. Download: Download high-res image (194KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Yiming Zhao,Jingyuan Zhang,Junmei Liu,Jiatong Han,Dan Xu,Jing Wang,Fengzhi Lyu,Lin Qin,Donghui Xu,Ge Chen,Guangyang Liu
Defect-engineered Cu–TCPP/ZIF-L nanosheet membrane: tannic acid coordinates with Cu 2+ to create defect sites, while ZIF-L serves as an interlayer spacer to suppress π–π stacking and restore transport. • The optimized membrane achieves 691.20 L·m -2 ·h -1 ·bar -1 , a 75.5× increase over pristine Cu–TCPP. • Efficient dye removal under static conditions: 97.77% (CV) and 97.87% (MG), suitable for agricultural water purification. • Adsorption–degradation self-cleaning via single-layer chemisorption/ion exchange and catalytic oxidation by O₂· - / 1 O₂; cucumber seedling tests confirm irrigation safety. Dye-laden wastewater from aquaculture and agricultural runoff poses serious environmental challenges, calling for membranes that can deliver both high water flux and efficient dye removal. However, MOF-based composite membranes often still face trade-offs between permeance and separation efficiency, and their practical performance is limited by fouling and insufficient self-regeneration. We hypothesize that defect engineering of Cu–TCPP via tannic-acid-mediated metal–phenolic network (MPN) disruption, together with ZIF-L nanosheet interlayer modulation, can create favorable transport pathways and strengthen adsorption/ion-exchange interactions while enabling ROS-driven self-cleaning. A defect-engineered Cu–TCPP/ZIF-L nanosheet-modified PVDF membrane was prepared using an MPN strategy with tannic acid, and its dye removal performance toward malachite green and crystal violet, together with the underlying mechanisms, was systematically investigated. The optimized membrane achieves a 75.5-fold increase in water permeance to 691.20 L/(m 2 ·h·bar) while maintaining high removal efficiencies of 97.87% for malachite green and 97.77% for crystal violet, and it exhibits self-cleaning behavior enabled by superoxide radicals and singlet oxygen. This work demonstrates an integrated Cu-TCPP–TA/ZIF-L/PVDF membrane design that combines MPN-mediated defect regulation with ZIF-L-assisted lamellar structure modulation for adsorption–degradation-based dye removal in agricultural water-related scenarios. Download: Download high-res image (170KB) Download: Download full-size image
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Nanomaterials
·
2025
·Vol. 15
·期 19
·1465
·
IF 4.3
Nannan Zheng,Yulan Zhang,Chunlei Dong,Zhiming Chen,Jianbin Chen
Fe–porphyrin/g-C3N4composites have emerged as promising visible-light photocatalysts, but their performance remains limited by inefficient charge separation and low reactive oxygen species (ROS) yield. Here, iron–tetra(4-carboxyphenyl) porphyrin (Fe–TCPP) was coupled with g-C3N4nanotubes (CNNTs) via a facile self-assembly strategy, creating a morphology-coordinated system. Comprehensive characterization (XRD, FTIR, SEM/TEM, BET, UV–Vis diffuse reflectance, PL, XPS, and EPR) confirmed the structural integrity, electronic coupling, and ROS generation capability of the composites. Fe–TCPP incorporation narrowed the bandgap from 2.78 to 2.56 eV, prolonged the average carrier lifetime from 6.3 to 7.5 ns, and significantly enhanced the generation of •OH and1O2. The optimized 1 wt% Fe–TCPP@CNNTs achieved complete Rhodamine B degradation within 30 min under visible light, with the highest two-stage apparent rate constants (k1= 0.0964 min−1, k2= 0.328 min−1). In addition, the hybrids retained over 90% activity after six consecutive runs, confirming their stability and recyclability. The synergistic effect of Fe–N coordination and nanotubular architecture thus promotes light harvesting, charge separation, and ROS utilization, offering a promising design principle for high-performance photocatalysts in environmental remediation.
研究领域:
材料科学
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环境化学
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光催化
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纳米材料
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能源化学
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表面科学
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物理化学
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高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2022
·Vol. 37
·期 1
·e6935
·
IF 4.072
Yanyun Wang,Jiehua Bao,Changjiang Zuo,Guomeng Dong,Xiaoli Sheng,Yuzhong Huang,Yiwei Zhang,Yuming Zhou
Exploration of levulinic acid (LA) hydrogenation to γ-valerolactone (GVL) contributes to the conversion from carbohydrates to valuable fuels and chemicals. Here, we obtained a series of ultra-small PtNix bimetallic composite catalysts encapsulated in silicalite-1 zeolite (S-1) via a one-pot synthesis strategy protected by tetra(p-carboxyphenyl)porphyrin (TCPP) ligands. The catalytic results showed that PtNi 3 @S-1 (TCPP) exhibited the most active catalytic performance (95.7% LA conversion and 93.8% GVL selectivity) under optimized conditions. The characterization results indicate that ligand modification and bimetallic synergy play an important role in enhancing the catalytic activity. The introduction of TCPP provides a guarantee for the homogeneous encapsulation of PtNi 3 in S-1 zeolite at sub-nanometer size. The electronic interaction of PtNi bimetallic, high dispersibility of active components, improved surface acidity and excellent stability co-contribute to the satisfactory hydrogenation activity.
研究领域:
催化
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化学工程
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材料科学
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绿色化学
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2026
·
IF 4.8
Pei Wu,Yang Jiao,Li Cheng,Cheng Yao,Xiong Chen
A novel near-infrared luminescent fluorescent composite material, TCPP-His@ZIF-8, was successfully constructed. Through an amide condensation reaction, Tetrakis (4-carboxyphenyl) porphyrin (TCPP) was covalently anchored onto the surface of L-histidine (His) -modified ZIF-8 metal-organic framework. This material serves as a highly sensitive near-infrared fluorescence sensing platform. Upon introducing mitoxantrone (MITX) as a fluorescence quencher, the material achieves highly selective and sensitive fluorescence detection of MITX. Mechanistic studies revealed that the fluorescence quenching of TCPP-His@ZIF-8 by MITX involves multiple mechanisms: the shift in absorption peaks confirms the presence of static quenching, while FRET is the primary mechanism responsible for the shortening of fluorescence lifetime, i.e., the dynamic quenching process. The inner filter effect (IFE) contributes partially to the reduction in apparent fluorescence intensity but is not the dominant factor. Under optimal experimental conditions, the sensor exhibits good linearity for MITX detection within the range of 0.125–14.0 μM, with a detection limit as low as 91.93 nM. Anti-interference and selectivity experiments demonstrated that common interferents and antibiotic analogues did not significantly affect detection. Furthermore, spiked recovery experiments in real samples such as tap water, milk, and human serum yielded satisfactory results, validating the reliability and potential of this method for practical applications.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Lijia Huang,Jiao Shen,Yi Yuan,Yaoqi Huang,Ying Liang,Shaojun Yuan
The development of efficient photocatalysts for hydrogen sulfide (H 2 S) degradation under visible light remains a critical challenge due to constraints in light absorption efficiency and rapid electron-hole recombination. In this study, a novel dual S-scheme ternary heterojunction photocatalyst, In-TiO 2 @BiOBr@In-TCPP (IBP), was synthesized via a hydrothermal method for high-performance H 2 S desulfurization. Comprehensive characterization confirmed the successful formation of the heterostructure, where In-TiO 2 facilitated spontaneous H 2 S dissociation, BiOBr served as an efficient electron transport medium, and In-TCPP extended the light absorption spectrum to 1200 nm. The optimized IBP-3 demonstrated exceptional performance, achieving complete H 2 S degradation (100 %) within 120 min under visible light irradiation and retaining over 70 % efficiency even after 8 h of continuous operation. Mechanistic investigations revealed that the synergistic integration of In-TiO 2 , BiOBr, and In-TCPP enhanced visible light utilization, suppressed charge carrier recombination, and promoted reactive oxygen species (ROS) generation via internal electric fields (IEF) and S-scheme charge transfer pathways. This study not only presents the rational engineering of multi-component systems for designing advanced heterojunction photocatalysts to address industrial desulfurization challenges, but also emphasizes the potential of tailored heterostructures in advancing sustainable environmental remediation technologies.
研究领域:
环境科学
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材料科学
·
化学工程
·
纳米技术
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ENVIRONMENTAL POLLUTION
·
2026
·
IF 7.2
Shan-Shan Yao,Yu-Han Xie,Zhi-Yan Wang,Shan Liu,Rui Hou,Lang Lin,Yu Zhong,Xiao-Ping Huang,Heng-Xiang Li,Xiang-Rong Xu
Tris(1-chloro-2-propyl) phosphate (TCPP) is the predominant organophosphate ester detected in aquatic environments; however, its pollution sources and associated environmental risks remain poorly understood. Polyurethane foam (PUF), a common microplastic contaminant in marine environment, can contain substantial amounts of TCPP and thus potentially threaten aquatic ecosystem. This study investigated the release kinetics and environmental risks of TCPP from PUF microplastics in both artificial seawater and natural water collected from the Pearl River Estuary. Short-term, long-term sustained-release, and cyclic release experiments were conducted, and the resultant data were fitted with Fick's diffusion model, as well as first- and second-order kinetic models. The results revealed that TCPP release is governed primarily by intraparticle diffusion. The release rate was significantly influenced by PUF particle size (larger particles released TCPP faster), water temperature (2.47-fold higher at 25 °C than at 15 °C), and fulvic acid concentration (enhanced release at high concentrations), whereas salinity exerted only a weak inhibitory effect (release rates in freshwater exceeded those in seawater). During cyclic leaching, TCPP release decreased rapidly; concentrations in the final cycle were two orders of magnitude lower than those in the initial cycle. Long-term leaching experiments further indicated a multi-century release potential, with a maximum release half-life of 312 years. These findings highlight the persistent, gradual leaching risk of TCPP and underscore the critical importance of controlling microplastic emissions at the source to mitigate long-term environmental accumulation of the contaminant.
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ANALYTICA CHIMICA ACTA
·
2020
·
IF 5.977
Qihao Zhu,Weiran Mao,Chengli Zhang,Yuan Zhou,Zhiyong Tang,Chao Yu
Here, a novel electrochemiluminescence biosensor based on potential-resolved strategy was firstly prepared for the detection of dual targets α2,3-sialylated glycans and α2,6-sialylated glycans. This is the first time that Au@BSA microsphere was used to connect with luminol to enhance its ECL intensity, and it can generate ECL signals at positive potential. Zeolitic Imidazolate Framework-8 (ZIF-8) and Meso-tetra (4-carboxyphenyl) porphyrin (TCPP) were linked using a one-pot method to synthesize a novel luminescent ZIF (L-ZIF) named TZZ, which can emit ECL signals at negative potential. Moreover, magnetite microspheres were used to construct a sandwich-type biosensor to obtain higher sensitivity and reduce background signals. In addition, the biosensor manufactured directly in solution have a wider linear range than constructed on electrode because it has more available space than the electrode surface. Due to the above advantages, the prepared ECL biosensor exhibited high sensitivity, stability and broader linear range, even for practical analysis. Therefore, the prepared ECL biosensor will become a promising method for determination of α2,3-sialylated glycans and α2,6-sialylated glycans in clinical applications in the future. What is more, it provides a potential method for detection of other multi-targets.
研究领域:
分析化学
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生物医学工程
·
传感技术
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APPLIED SURFACE SCIENCE
·
2025
·
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
·
光催化
·
纳米技术
·
分析化学
·
理论计算化学
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