BIOSENSORS & BIOELECTRONICS
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2026
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IF 11.8
Jixiang Li,Genyun Zhou,Fei Wu,Jinping Yuan,Linan Hu,Qiang Zhang,Wenge Yang,Yonghong Hu
Tetracycline (TC) is a persistent broad-spectrum antibiotic that poses significant threats to human health and the environment. Herein, we developed an ultrasensitive photoelectrochemical (PEC) biosensor for rapid TC detection. The sensor utilizes a flexible Si-doped carbon fiber membrane derived from polyacrylonitrile and dimethyldiethoxysilane as a conductive substrate. After coating with poly (3,4-ethylenedioxythiophene) and polystyrene sulfonate (PEDOT: PSS), a ternary UiO-66-NH 2 /Ag/g-C 3 N 4 Z-scheme heterojunction is assembled as the photoactive core, followed by electrostatic immobilization of laccase to achieve specific TC recognition. Electrochemical characterization confirmed that laccase improved both the biocatalytic activity and electron-transfer efficiency of the electrode. Combined with transient photocurrent measurements and molecular dynamics simulations, the sensing mechanism was shown to be dominated by steric hindrance arising from TC occupation of the laccase active site, followed by oxygen consumption, yielding a detection limit of 0.012 μM over 0-30 μM TC (R 2 = 0.993). UV diffuse reflectance spectra (UV-DRs), Mott–Schottky analysis (M-S), and electron paramagnetic resonance (EPR) measurements further verified that the Ag-mediated Z-scheme pathway significantly enhanced carrier separation. With excellent stability and anti-interference performance in real river water and complex matrices, this work provides an effective strategy for antibiotic detection by integrating flexible carbon-based substrates with advanced Z-scheme photocatalytic systems.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Mingming Dong,Zewen Huang,Shuyong Yang,Peng Zhou,Shenghui Tu
The growing prevalence of antibiotic residues in aquatic environments, particularly recalcitrant antibiotics like tetracycline (TC), poses significant ecological risks. In this study, a novel Bi 2 WO 6 /Mo-doped BiVO 4 /NH 2 -UiO-66 (BBU) ternary heterojunction photocatalyst was successfully synthesized via a solvothermal method to enhance visible-light-driven TC degradation through component synergy. Systematic characterization revealed that Mo doping induced lattice distortion in BiVO 4 , while the incorporation of NH 2 -UiO-66 drastically increased the specific surface area from 23.647 to 398.804 m 2 ·g −1 , providing abundant active sites. Photoluminescence (PL) and Electrochemical Impedance Spectroscopy (EIS) analyses demonstrated that the optimized BBU-3 sample exhibited the lowest charge carrier recombination rate. Under visible light irradiation for 80 min, BBU-3 achieved 95.2% degradation of TC, with reaction kinetics 8.61, 15.76, and 5.01 times higher than those of pristine Bi 2 WO 6 , BiVO 4 , and binary heterojunctions, respectively. Degradation-trapping experiments and electron paramagnetic resonance (EPR) measurements indicate that h + , 1 O 2 and ·O 2 - are the primary reactive species, suggesting that this system is a synergistic radical-non-radical degradation system. Additionally, possible degradation pathways and intermediate toxicity were evaluated. This work offers a promising strategy for designing efficient bismuth-based MOF heterojunctions for antibiotic remediation in water.
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JOURNAL OF FLUORESCENCE
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2026
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IF 3.4
Hou Huijing,Luo Mingming,Li Fang,Tan Yijun,Liu Ruowei,Xu Longping,Feng Yanwen,Guo Xiangli,Wu Zijian
Kanamycin (KANA) is a veterinary drug residue that is highly scrutinized in food safety testing. In this study, a metal-organic framework-based aptamer-nanoenzyme (NH 2 -MIL-88B(Fe)/CDs-Apt) was introduced for the dual-mode detection of KANA. NH 2 -MIL-88B(Fe) catalyzes the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) by H₂O₂ to form blue ox-TMB, thereby enabling colorimetric detection. As a fluorescence quencher, NH 2 -MIL-88B(Fe) quenches the fluorescence of CDs via photogenerated electron transfer (PET) or fluorescence resonance energy transfer (FRET) mechanisms. The detection limits were 0.716 fM (fluorescent) and 0.709 fM (colorimetric), respectively. The proposed aptasensor was successfully applied to the detection of KANA in eggs, honey, and lake water. This aptasensor demonstrates high sensitivity and accuracy, as well as broad application potential.
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Journal of Water Process Engineering
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2026
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IF 6.6
Lixun Fan,Yonggang Zhao,Mingli Ye,Hongyun Niu,Yaqi Cai
NH₂-MIL(Fe) is grafted onto amino-functionalized NH₂-PS resin to gain micro-nanoscale adsorbent. • SMX adsorption is favorable at pH 5.2–8.0 with an adsorption capacity of 250.61 mg·g −1 . • Hydrogen bonding and electrostatic attraction are the driving forces for SMX adsorption. • The Fe(III) centers in MOF endow NH₂-PS@NH₂-MIL(Fe) Fenton-like catalytic activity. Sulfonamide antibiotics (SAs) are ubiquitous in the aquatic environment and difficult to remove using conventional wastewater treatment processes. Adsorption and Fenton-like oxidation are efficient techniques for the elimination of SAs from water. In this study, a novel hierarchical micro-nano structural adsorbent was synthesized by grafting Fe-based MOFs (NH 2 -MIL(Fe)) onto amino-functionalized polystyrene-divinylbenzene resin (NH 2 -PS). The physicochemical properties and structural features of the composite (NH 2 -PS@NH 2 -MIL(Fe)) were systematically characterized by SEM, EDS, XRD, FTIR, BET and XPS, confirming the successful immobilization of NH 2 -MIL(Fe) on the PS surface and the presence of abundant active sites. The adsorption behavior of sulfamethoxazole (SMX) on NH 2 -PS@NH 2 -MIL(Fe) was evaluated under various conditions, including pH, adsorbent dosage, and coexisting anions. The adsorption process followed the pseudo-second-order kinetic model and Langmuir isotherm model, indicating a monolayer sorption with a maximum capacity of 250.6 mg·g −1 at pH 5.2 and thermodynamic analyses revealed that the adsorption was spontaneous and exothermic. Based on FTIR, XRD and XPS analyses, electrostatic attraction, hydrogen bonding, π–π stacking, and metal–ligand coordination/Lewis acid-base interaction collectively governed the adsorption of SMX. Furthermore, the Fe(III) centers endowed NH 2 -PS@NH 2 -MIL(Fe) Fenton-like catalytic activity. With the addition of H 2 O 2 , over 95% of SMX was eliminated rapidly from water in a wide pH range. Based on the dual functions, this material can efficiently remove SMX from surface water samples. These results highlight the great potential of NH 2 -PS@NH 2 -MIL(Fe) for efficient removal of sulfonamide antibiotics. Download: Download high-res image (319KB) Download: Download full-size image
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CHINESE JOURNAL OF CHEMISTRY
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2025
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IF 5.5
Shaohua Liu,Xiaoqin Ma,Xifa Long,Yun Yang
Comprehensive Summary Birefringent crystals exhibit significant advantages in the field of polarization state modulation due to their unique optical anisotropy properties. The property optimization between bandgap and birefringence depends on the crystal structure, which is always a key scientific problem in the field of functional crystal materials design. In this work, the fluorination-oriented strategy was applied to the design of crystals with large birefringence and deep ultraviolet (DUV) cutoff edges. By introducing the fluorinated [SiF 6 ] octahedron, the arrangement orientation of the π-conjugated [C(NH 2 ) 3 ] groups was accurately regulated, thereby achieving the design and preparation of a new crystal [C(NH 2 ) 3 ] 2 SiF 6 with a large bandgap (6.34 eV) and large birefringence (0.16 @546 nm). In addition, [C(NH 2 ) 3 ] 2 SiF 6 (GSF) can obtain large-sized crystals through a simple water solution evaporation method, and it has unique advantages such as low cost and easy growth. The synergistic mechanism between the core factors of significant birefringence and wide bandgap in [C(NH 2 ) 3 ] 2 SiF 6 was revealed through experimental characterization and theoretical calculation. This work provides promising candidates with exceptional properties for DUV applications.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Bin Zhao,Yue Li,Min Sun,Zhaohui Zhang,Liang Wang,Jiaxue Yao
The growing concern over pharmaceutical and personal care products (PPCPs) in drinking water sources underscores a serious public health risk. Although polyamide (PA) nanofiltration (NF) membranes are highly effective at removing PPCPs, their performance for neutral and hydrophobic PPCPs requires improvement. To overcome this challenge, we fabricated a hydrophilic NF membrane containing a calcium alginate (CaAlg) hydrogel interlayer and UiO-66-NH 2 nanofillers (PA/UiO-66-NH 2 /CaAlg) to reduce membrane affinity for hydrophobic PPCPs. A fishnet-like structure was created on the membrane surface, which enhanced the effective area for filtration. Consequently, the water permeance of the PA/UiO-66-NH 2 /CaAlg membrane reached 22.7 L·m −2 ·h −1 ·bar −1 , representing an 83 % increase over the control thin-film composite (TFC) membrane. The hydrophilic CaAlg interlayer also restricted the diffusion of piperazine (PIP), thereby slowing its interfacial polymerization with trimesoyl chloride (TMC). This resulted in a highly hydrophilic PA film, evidenced by a water contact angle below 10°. The reduced adsorption of hydrophobic PPCPs on this hydrophilic surface diminished the driving force for their penetration. Furthermore, the inherent hydrophilicity of the CaAlg hydrogel interlayer suppressed the diffusion of hydrophobic PPCPs across the membrane. As a result, the removals for hydrophobic methylparaben (MP), propylparaben (PP), bisphenol A (BPA), and benzylparaben (BP) were significantly enhanced. The selectivity ( A/B ) for BPA increased by more than four times compared to that of the TFC membrane. This study demonstrates that integrating a hydrogel interlayer with MOF nanofillers offers a promising approach for developing high performance NF membranes that exhibit both improved water permeance and superior PPCP removal.
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TRANSACTIONS OF TIANJIN UNIVERSITY
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2025
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IF 8.5
Song Yanyan,Sun Zhichao,Sun Jiamin,Liu Ying-Ya,Wang Anjie,Peng Chong
The development of efficient photocatalysts for selective organic transformations under visible light remains a major challenge in sustainable chemistry. In this study, we present a straightforward solvothermal strategy for fabricating a defect-engineered ZrO 2 /UiO-66-NH 2 hybrid material with abundant oxygen vacancies, enabling the visible-light-driven oxidation of benzyl alcohol to benzaldehyde. By optimizing the solvothermal treatment duration, the composite (UiO-66-NH 2 -2 h) achieves a 74.1% conversion of benzyl alcohol with > 99% selectivity toward benzaldehyde under mild conditions, substantially outperforming pristine UiO-66-NH 2 . Structural and mechanistic studies reveal that the solvothermal process induces the in situ formation of ultrasmall, uniformly dispersed ZrO 2 nanoparticles (~ 2.3 nm) within the MOF matrix, while simultaneously generating abundant oxygen vacancies, as confirmed by XPS, EPR, and HRTEM analyses. The defect-mediated electronic structure of the ZrO 2 /UiO-66-NH 2 hybrid enhances visible-light absorption, facilitates charge carrier separation, and promotes efficient activation of O 2 into superoxide radicals (·O 2 − ), the primary reactive species. Transient photocurrent measurements and electrochemical impedance spectroscopy further verify the improved charge separation efficiency. The synergistic interplay between oxygen vacancies and the intimate ZrO 2 /UiO-66-NH 2 interface provides a unique defect-mediated charge transfer pathway, distinguishing this system from conventional heterojunctions. This study demonstrates a facile, one-step approach to integrate defect engineering with interfacial hybridization in MOF-based photocatalysts, offering a scalable route for solar-driven organic synthesis. Graphical
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2026
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IF 3.9
Li Mei,Qian Wang,Yao Yao,Xiaolong Fang,Ziwen Li,Chao Liu,Ganggang Chang,Xiaoyu Yang
Tandem catalysis can enhance the reaction efficiency and selectivity while reducing separation and purification steps, thus improving the development of “green chemistry”. The tandem synthesis of cyclic carbonates (CCs) from olefins and CO2 is becoming one of the most promising strategies; however, designing a multifunctional catalyst with multiple sites and fast mass transfer channels to overcome mass transfer resistance at different sites remains a challenge. In this work, we controllably synthesized a bulk and nanosheet (NS) structure of Ni-BDC-NH2 (Ni-BDC-NH2 NS) via a solvent regulation strategy and successfully immobilized Ag+ in Ni-BDC-NH2 NS to form Ag+@Ni-BDC-NH2 NS, which integrated highly exposed, synergistic acid (Ag+) and base (−NH2) active sites, along with rapid mass transfer channels. Benefiting from these synergistic effects and structural advantages, Ag+@Ni-BDC-NH2 NS efficiently catalyzed one-pot synthesis of CCs from olefins and CO2, achieving 99% conversion of styrene and 51% selectivity for styrene carbonate (SC) under optimal conditions, which was significantly higher than that of contrast catalysts lacking Ag+ or –NH2 (SC selectivity <30%). Based on experiments, a feasible mechanism was proposed, in which the Lewis acid sites (Ag+) catalyzed olefin epoxidation, while the Lewis base sites (−NH2) and acid sites (Ag+) synergistically catalyzed the cycloaddition reaction of CO2 and epoxides. Additionally, the catalytic performance and structural stability were maintained even after five successive recycling tests.
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ACS ES&T Engineering
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2023
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IF 7.1
Junna Yan,Mengyu Ma,Keyi Liu,Yang Bao,Feihu Li
Efficient removal and recovery of phosphorus (P) from wastewater is critical for addressing both phosphate rock depletion and eutrophication-related deterioration of surface water quality. Herein, we present a promising platform approach integrating cerium-doped NH2-MIL-101(Fe) with melamine sponge (MS) scaffolds for rapid and high-efficiency recovery of P from wastewater. The as-prepared MIL-101@sponge composites (denoted as MIL-101@CS, MIL-101@PVDF, and MIL-101@SDBS, respectively) are featured by flexibility and stability according to many characterization techniques. Batch adsorption of P over these composite adsorbents indicates that these MIL-101@sponge composites exhibit a maximum adsorption capacity (e.g., 253.66 mg g–1 for MIL-101@CS) at the optimum pH of 6.0 and that adsorption equilibrium can be attained within 150 min and well described by the pseudo-second-order kinetic model. In addition, these composites show a high selectivity for P over carbonate and other common monovalent anions under environmentally relevant conditions. The results of desorption and recycling tests indicate that MIL-101@CS retains good adsorption and desorption efficiency even in a much short operating time (i.e., 5 min), which allows such a composite to be applied in enriching and recovering P efficiently from wastewater via a rapid adsorption/desorption operation. Moreover, the high feasibility of MIL-101@CS in actual scenarios was validated by efficiently enriching the P from a sludge dewatering liquid. Furthermore, the main mechanisms for P adsorption are elucidated from various microstructural characterizations. Overall, this work presents a strategy of integrating MIL-101 with sponge scaffolds for rapidly and efficiently recovering P from wastewater, which may be potentially extended to the recovery of other value-added elements of interest from waste streams.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Zhicheng Zhang,Chao Xu,Xudong Xiong,Chen Wang,Qi Zhang,Zhao Fan,Yongqian Wang
The application of CdS in pollutant degradation was limited due to the rapid compounding of photogenerated carriers. A ternary Au@NH 2 -MIL-125(Ti)/CdS (5Au@40NMT/CdS) composite catalyst was synthesized with a two-step method and methylene blue (MB) was used as simulate contaminants to evaluate its photocatalytic performance under simulated visible light. The compounding of NH 2 -MIL-125 and the loading of Au nanoparticles significantly enhanced the photodegradation performance of the composite catalyst. Compared with pure CdS, the ternary composite catalyst exhibited higher degradation efficiency (93.3 %) and higher degradation rate (9 times that of CdS)within 30 min, which was attributed to the high specific surface area and the synergistic effect of the three components that accelerated the carrier separation and broadened the photoresponse range. In addition, superoxide radical (·O 2 - ) was identified as the main active species in the MB degradation process by the electron spin resonance (ESR) technique. This work was expected to give a strategy for the fabrication and design of CdS/MOF composite catalysts in the field of pollutant degradation.
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CHEMOSPHERE
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2022
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IF 8.943
Hongyu Lu,Chengxun Deng,Zhimin Yu,Dianya Zhang,Weiping Li,Jun Huang,Teng Bao,Xiaowei Liu
Plasma techniques to degrade pollutants are generally more efficient than conventional methods, but exist some problems such as high energy consumption, incomplete degradation of pollutants, and secondary pollution caused by highly toxic intermediates. In this study, the dielectric barrier discharge plasma (DBDP) combined with the Ti-based metal organic frameworks (MOFs) catalysts (P25/NH 2 -MIL-125(Ti)) was used to degrade fluorene in the soil. The synergistic treatment technique used in soil remediation can realize a green and promising treatment efficiency with relatively low energy consumption. Compared with DBDP system alone, the synergetic treatment system of DBDP and P25/NH 2 -MIL-125(Ti) considerably increased the degradation efficiency of fluorene in the soil to above 90% at 10 min, even with a relatively low discharge voltage (5 kV). The synergistic treatment system achieved 88.8% of fluorene mineralization at 60 min. Optical emission spectroscopy and electron paramagnetic resonance spectroscopy both showed that •OH and •O 2 − played an important role in the synergetic treatment system. Nine main intermediates were identified using gas chromatography-mass spectrometry and Fourier transform infrared analysis. The main degradation of fluorine in soil was caused by the electronic transition of the catalytic material excited by DBDP, and finally mineralized into CO 2 and H 2 O. The fluorene and its toxic intermediates were effectively removed. This study provides an insight for achieving high efficiency and environmentally friendly application perspective in soil remediation.
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APPLIED SURFACE SCIENCE
·
2022
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IF 7.392
Lielie Liu,Ruxangul Jamal,Tursun Abdiryim,Xiong Liu,Dongna Zou,Haile Liu,Yanyan Song
Direct ethanol fuel cell (DEFC) is one of the most advanced technologies for energy applications. A new Pt-based electrocatalyst for DEFC is developed through reasonable strategies to assist the commercialization of ethanol oxidation reaction (EOR). We obtain the composite material (Co/N-CNT@PEDOT-NH 2 ) formed by Co, N co-doped carbon nanotubes (Co/N-CNT) and functional group (–NH 2 ) grafted poly(3,4-ethylenedioxythiophene) (PEDOT-NH 2 ) in ionic liquid (IL) by in-situ oxidation method as the catalyst support of Pt nanoparticles (Pt NPs). It is worth noting that the obtained composite material is entangled with each other to form a network structure with the help of IL, so that Pt NPs is uniformly loaded on the surface of the composite to promote the electron transmission. Meanwhile, the unique structure can form π-π* conjugation and hydrogen bonding, and help to anchor Pt NPs. The characteristics of the composite are measured by structure characterization (TEM, SEM, FT-IR, Raman, XRD, XPS) and a series of electrochemical tests. The results show that the mass activity (MA) of Co/N-CNT@PEDOT-NH 2 /Pt (1669.1 mA mg −1 Pt ) and Co/N-CNT/Pt (732.7 mA mg −1 Pt ) are higher than commercial Pt/C (279.6 mA mg −1 Pt ), indicating that Co/N-CNT@PEDOT-NH 2 /Pt is a promising EOR electrocatalyst.
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