MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2025
·
IF 4.6
Mingming Dong,Shuyong Yang,Peng Zhou,Yue Gao,Anshun Wang,Shenghui Tu
The accumulation of antibiotics in aquatic ecosystems poses a serious threat to the environment and to human health. Tetracyclines (TC) account for a significant proportion of antibiotic residues worldwide. In order to overcome the limitations of conventional degradation methods, we created a three-component S-scheme heterojunction consisting of BiVO 4 /MWCNTs@NH 2 -UiO-66 (Zr) using a two-step solvothermal process. This synergistic integration utilises: (i) MWCNTs as electron transport bridges; (ii) NH 2 -UiO-66 (Zr) for high TC adsorption (surface area of 931.86 m 2 g −1 ); and (iii) BiVO 4 for visible light harvesting. This architecture broadens light absorption, reduces charge recombination and enables dual-pathway Reactive Oxygen Species (ROS) generation. Under visible light, the optimised catalyst achieves 95.2 % TC degradation within 90 min–7.73 times faster than pristine BiVO 4 (k = 0.02721 vs. 0.00352 L mg −1 ·min −1 ). Radical trapping and EPR analyses confirm ·O 2 − and h + as the dominant species, while LC-MS reveals three degradation pathways. With 85.3 % activity retention after five cycles, this work provides a blueprint for the design of efficient, antibiotic-mineralising photocatalysts.
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CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2026
·
IF 3.5
Shoukang Xiao,Ze Qin,Junying Chen,Liyu Chen,Kui Shen
A novel strategy is developed to heterogenize homogeneous cocatalysts. • Optimal nanoreactors are highly active and size-selective for CO 2 fixation. • The catalytic mechanism of CO 2 cycloaddition over OM@x-m-UiO-66/PBr is revealed. The cycloaddition of CO 2 with epoxides represents a promising strategy for mitigating CO 2 emissions. However, most heterogeneous catalytic systems still rely on homogeneous halogen-based cocatalysts to achieve desirable activities, which significantly complicates subsequent product purification and separation. Herein, we report a facile strategy to heterogenize homogeneous Br-based cocatalysts by encapsulating them into within stable UiO-66-based core–shell nanoreactors for efficient CO 2 fixation. Specifically, ordered mesoporous Ce-based UiO-66 (OM-UiO-66) was first synthesized via a soft-template method. The homogeneous Br-based cocatalyst was then adsorbed into the mesopores of OM-UiO-66, followed by epitaxial growth of a microporous Ce-based UiO-66 shell with controllable thickness to complete the encapsulation, thereby yielding a size-selective nanoreactor that possesses both 0.6 nm sieving channels and 10 nm reaction channels. Importantly, the synergistic interactions among the high concentration of the cocatalyst confined in the mesopores, the abundant Lewis acidic Ce sites on the pore walls, the mesoporous microenvironment that facilitates the enrichment of CO 2 and epoxide substrates, and the judiciously controlled thickness of the microporous shell collectively impart the as-prepared nanoreactor with high catalytic activity, excellent recyclability, and remarkable substrate size selectivity for the cycloaddition of CO 2 with epoxides under ambient conditions. This work not only develops a novel strategy for the efficient fixation of CO 2 via the heterogenization of homogeneous catalysts with a novel MOF-based core–shell architecture, but also provides a compelling paradigm for the heterogenization of other homogeneous catalysts. The heterogenization of homogeneous Br-based cocatalysts is realized by encapsulating them into a new kind of stable UiO-66-based core–shell nanoreactors for efficient and size-selective CO 2 cycloaddition with epoxides under ambient conditions. Download: Download high-res image (370KB) Download: Download full-size image
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LANGMUIR
·
2026
·Vol. 42
·期 30
·22403-22412
·
IF 4.4
Cai Jixiang,Zhao Haiyan,Qin Jiannan,Li Mingfu,Zhang Pingjun,Jiang Liqun
Metal–organic frameworks (MOFs) represent promising
platforms
for enzyme immobilization; however, the interplay between surface
chemical heterogeneity and defect density in dictating adsorption
efficiency remains poorly understood. Herein, we systematically investigated
the immobilization of glucose isomerase (GI) on three UiO-66 variants,
indicating that the acetic acid (AA)-modified UiO-66 (UiO-66-AA) achieved
the highest enzyme loading efficiency of 92.8% and activity recovery
of 84.2%, markedly outperforming both pristine UiO-66 and formic acid-modified
UiO-66 (UiO-66-FA). The resulting UiO-66-AA-GI composite achieved
the highest fructose yield of 37.7% with an excellent selectivity
of 94.8% under optimal conditions and retained stable performance
over five recycling cycles. Comprehensive characterization demonstrates
that acetate modification generates a distinctive chemical mosaic
surface, in which hydrophobic methyl domains and residual carboxyl
groups synergistically enable multimodal adsorption via hydrophobic
interactions, hydrogen bonding, and weak electrostatic forces. This
unique surface chemistry, combined with the largest external surface
area, maximizes GI loading while preserving the catalytic activity.
These findings establish that rationally designed surface chemical
mosaics with complementary interaction modes are critical for achieving
high-efficiency enzyme immobilization in MOF-based biocatalysts.
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POLYMER BULLETIN
·
2026
·Vol. 83
·期 10
·549
·
IF 4.2
Du Jiajie,Chen Sixian,Ding Rui,Wang Yingpeng,Shi Qisong
Traditional rigid sensors often lack sufficient flexibility, while pure poly(vinylidene fluoride) (PVDF) piezoelectric materials suffer from limited β-phase content and suboptimal mechanical properties. To address these challenges, we synthesized WO₃@UiO-66-NH₂ heterojunction materials via a hydrothermal method and integrated them with electrospinning technology to fabricate flexible TPU/PVDF composite piezoelectric sensor films. Characterization and performance evaluation identified an optimal PVDF-to-TPU mass ratio of 8:2. Moreover, incorporation of 0.5 wt% WO₃@UiO-66-NH₂ yielded the highest β-phase content in PVDF, along with enhanced dielectric properties, energy storage density, and piezoelectric output. The resulting flexible piezoelectric sensor demonstrates a sensitivity of 1.87 V/N, with response and recovery times of 40 ms and 140 ms, respectively. It reliably monitors diverse human activities and physiological signals, including wrist and knee joint flexion, vocalization, swallowing, respiration, and grasping. Combining excellent flexibility, high sensitivity, and rapid response, this sensor shows considerable promise for applications in human health monitoring and motion detection.
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LANGMUIR
·
2026
·Vol. 42
·期 29
·21139-21154
·
IF 4.4
Mai Quan-Doan,Dang Thi Hanh Trang,Tran Van Tiep,Ngo Thi Loan,Ong Van Hoang,Cao Thi Hong,Nguyen Quang Hoa,Lich Le Van,Nguyen Cong Chi,Mai Xuan Trang,Phan Manh-Huong,Pham Anh-Tuan,Le Anh-Tuan
Surface-enhanced Raman spectroscopy (SERS) is a powerful
analytical
technique capable of providing rapid and noninvasive molecular fingerprint
identification through characteristic vibrational signatures. However,
developing SERS platforms that enable both ultrasensitive and highly
selective detection, particularly for molecules with intrinsically
weak Raman responses, remains a major challenge, yet it is highly
desirable for expanding the currently limited application scope of
SERS. Herein, we introduce a novel plasmonic porous multicore@shell
Ag@UiO-66 nanostructure that synergistically integrates the localized
surface plasmon resonances (LSPRs) of Ag nanoparticles (NPs) with
the selective molecular capture capability of the metal–organic
framework UiO-66. The hybrid structure is fabricated via a simple
solvent-induced self-assembly strategy, enabling in situ formation
of UiO-66 around dispersed AgNPs at room temperature. The resulting
architecture immobilizes multiple AgNP cores within a porous UiO-66
shell matrix, simultaneously stabilizing their plasmonic activity
and generating abundant interparticle hotspots. More importantly,
the UiO-66 shell provides molecular recognition toward salicylic acid
(SA─a bioactive aromatic compound) through synergistic adsorption
interactions involving bidentate coordination with Zr nodes, hydrogen
bonding, and π-π interactions. This cooperative plasmonic-molecular
recognition mechanism effectively concentrates target molecules at
electromagnetic hotspots, leading to significantly enhanced SERS signals.
As a result, the developed platform achieves highly selective and
ultrasensitive detection of SA with a detection limit down to 1 nM,
far surpassing that of traditional SERS substrates (∼1 μM).
Furthermore, machine learning-assisted spectral analysis confirms
the reliable and selective identification of SA in complex mixtures.
This work demonstrates an effective strategy for developing MOF-enabled
selective and ultrasensitive SERS platforms, opening new avenues for
advanced molecular sensing applications.
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Ziyao Mu,Peiran Sun,Pengsheng Chen,Qing Zhou,Haiyun Zhai
A sensor based on UiO-66@MWCNTs, AuNPs, and ABSA was constructed for methyl parathion detection. • UiO-66@MWCNTs provides abundant Zr OH sites for MP adsorption and preconcentration. • The sensor exhibits a wide linear range (0.1–15 μg·mL −1 ). • Satisfactory recoveries (97.43%–101.5%) were obtained in traditional Chinese herbs. A non-enzymatic electrochemical sensor for methyl parathion (MP) was developed based on UiO-66@MWCNTs/AuNPs/ABSA composites. These composites were synthesized via a solvothermal route, followed by AuNPs electrodeposition and ABSA electropolymerization. The UiO-66@MWCNTs matrix offers a large surface area and abundant binding sites for organophosphorus groups, enhancing MP adsorption and preconcentration. AuNPs effectively boost conductivity and catalytic activity, while the electropolymerized ABSA further facilitates electron transfer due to its excellent electrocatalytic properties. Thus, the composite displays remarkable electrocatalytic activity toward MP. Using the MP reduction peak current, the sensor achieves a linear range of 0.1–15 μg·mL −1 and a detection limit of 0.0152 μg·mL −1 (S/N = 3). It also exhibits good selectivity, satisfactory reproducibility (RSD 1.93%), excellent repeatability (RSD 1.50%), long-term stability (99.96% retention after 15 days), and successful application in traditional Chinese herbs such as Coptis chinensis French. and Citri Reticulatae Pericarpium .
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CHEMISTRY-A EUROPEAN JOURNAL
·
2026
·
IF 3.6
Weiya Niu,Yongjian Wang,Sucheng Liu,Yizhe Wang,Zhengchao Liang,Yu Zhang,Renliang Lyu,Xiaogang Luo
The development of high-capacity and selective adsorbents for fluoride (F − ) removal is hindered by its inherent characteristics, including its small ionic radius, high charge density, strong hydration ability, high mobility and solubility, as well as the weak diffusion driving force at low concentrations. In this study, a novel composite adsorbent was prepared by loading UiO-66-NH 2 onto carboxymethylated cellulose beads (UiO-66-NH 2 @CMCBs) via an in-situ generation strategy for efficient adsorption and recovery of F − . The highly porous structure and abundant surface carboxyl groups of CMCBs provide favorable coordination sites, promoting the growth of UiO-66-NH 2 . Under environmental conditions (25°C, pH 7.4), UiO-66-NH 2 @CMCBs completely remove F − from aqueous solutions with an initial concentration of 10.0 mg L −1 . Furthermore, UiO-66-NH 2 @CMCBs demonstrated excellent column adsorption performance and outstanding reusability, maintaining a removal efficiency exceeding 80% after 5 cycles. These results highlight the potential of UiO-66-NH 2 @CMCBs as an efficient and recyclable adsorbent for the practical treatment of fluoride-contaminated water. Graphical
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LANGMUIR
·
2026
·
IF 4.4
Xinhua He,Zijie Xia,Linlin Wang,Tianchen Shen,Wenqi Tan,Jianmin Shen,Linying Yuan,Zheng Jiao
The ubiquitous accumulation of antibiotics and synthetic dyes in aquatic environments has emerged as a critical threat to the ecological integrity and human health. Visible-light-driven photocatalysis represents a sustainable strategy for decontaminating such pollutants; yet, its practical efficacy is often hampered by narrow light-harvesting ranges and rapid photogenerated carrier recombination. Herein, a ternary photocatalyst, namely, CDs/UiO-66-NH2/BiOCl (CUCl), was rationally constructed by integrating carbon dots (CDs) into a UiO-66-NH2/BiOCl Z-scheme heterojunction. Serving as an efficient electron reservoir, the introduced CDs not only significantly extended the visible-light absorption range but also effectively suppressed carrier recombination. Under visible-light irradiation, the optimized CUCl catalyst achieved remarkable degradation efficiencies of 87.2% and 98.8% for tetracycline and rhodamine B, respectively, outperforming the binary UiO-66-NH2/BiOCl heterojunction and pristine BiOCl. Radical trapping experiments and photocatalytic mechanism investigations revealed that photogenerated holes (h+) and superoxide radicals (·O2–) were the dominant active species responsible for pollutant degradation. Moreover, the CUCl catalyst exhibited excellent structural stability and reusability, retaining more than 85% of its initial catalytic activity after four consecutive reuse cycles. This work provides a novel and viable strategy for fabricating high-efficiency, stable environmental photocatalysts via the synergistic integration of Z-scheme heterojunctions and carbon dot functionalization.
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JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2026
·
IF 4.4
Guanghui Chen,Bolin Li,Zhiguang Xue,Hong Liu,Jiayao Chen,Lei Zhang,Xinguo Xi,Lanqin Tang,Yong Zhou
Constructing well-defined MOF/COF heterostructures that integrate pollutant enrichment with efficient interfacial charge separation remains challenging, as intimate interfacial contact may compromise framework integrity. Herein, an ultrathin TPA-COF/UiO-66-NH₂ heterostructure is fabricated via interfacial self-assembly of exfoliated TPA-COF nanosheets, forming a conformal COF coating while preserving the crystallinity and microporosity of UiO-66-NH₂. Microscopic, thermogravimetric, and nitrogen sorption analyses reveal a continuous ultrathin COF layer with a low yet quantifiable loading (~1.5 wt%) and a BET surface area comparable to that of the pristine MOF. Compared with the individual components and their physical mixture, the assembled heterostructure exhibits markedly enhanced photocatalytic Cr(VI) reduction, highlighting the importance of controlled interfacial integration. Comparative adsorption studies, kinetic modeling, and pH-dependent experiments indicate that Cr(VI) enrichment is closely associated with surface-charge-mediated interactions of the amine-functionalized framework. Suppressed photoluminescence, enhanced photocurrent response, and radical scavenging experiments are consistent with improved interfacial charge separation, with photogenerated electrons serving as the dominant reductive species. Band-edge analysis further suggests a staggered energy alignment that is energetically favorable for interfacial carrier transfer. These findings illustrate how combining functional-group-mediated enrichment with controlled interfacial assembly can cooperatively influence adsorption and charge-transfer processes in MOF/COF heterostructures.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2026
·
IF 4.6
Cheng Xiong,Liyin Bu,Xue Bai,Yongzhong Fu,Quan Wang
Cts/Ce-UiO-66 was developed for sensitive ratiometric detection of Hg 2+ . • Intrinsic Ce 4+ /Ce 3+ redox couple in MOF provides a stable reference signal. • Chitosan coating promotes Hg 2+ enrichment and stabilizes the modified film. • The sensor showed a 3.73 nM LOD and 95.0%–105.3% recovery in pond water. Mercury pollution remains a serious environmental concern because of its toxicity, persistence, and bioaccumulation in aquatic environments. Herein, a ratiometric electrochemical sensor for Hg 2+ detection was developed using a chitosan/Ce-UiO-66 (Cts/Ce-UiO-66) composite. Ce-UiO-66 was used as a redox-active sensing scaffold. Its porous framework may provide accessible interfacial sites that may contribute to Hg 2+ accumulation, while the intrinsic Ce 4+ /Ce 3+ redox response provides a built-in electrochemical signal for internal normalization under controlled measurement conditions. Chitosan was introduced as a film-forming matrix. The amino and hydroxyl groups of chitosan may contribute to Hg 2+ interfacial preconcentration, while the polymer matrix improves the stability of the modified film. The integration of the proposed Cts-assisted Hg 2+ interfacial accumulation and the intrinsic Ce-related normalization signal enabled ratiometric Hg 2+ quantification. Under optimized differential pulse voltammetry conditions, the sensor exhibited a linear response toward Hg 2+ over the concentration range of 0.10–3.00 μM, with a limit of detection of 3.73 nM. The sensor was further evaluated in a fish-pond water sample, achieving recoveries of 95.00–105.33% at the tested spiking levels. These results support the preliminary feasibility of the Cts/Ce-UiO-66-based ratiometric sensor for Hg 2+ determination in the tested fish-pond water matrix under the present experimental conditions. Scheme 1. Schematic illustration of the preparation and sensing processes of Cts/Ce-UiO-66/GCE. Download: Download high-res image (108KB) Download: Download full-size image
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Food Analytical Methods
·
2026
·Vol. 19
·期 9
·248
·
IF 3
Qin Shili,Zhao Dongsheng,Jin Fenglong,Qin Yuting,Liang Xinyu,Liu Jingwen,Chu Hongtao,Gao Lidi,Zhao Ming
In this study, the octahedral core–shell ZIF-8@UiO-66-NH 2 composite, exhibiting high crystallinity, microporous structural properties and multifunctional groups, was synthesized, characterized, and applied for the first time as stationary phase in capillary electrochromatography. The baseline separation of four groups containing 14 analytes was achieved within 11.6 min, with resolution of at least 1.51. Compared to the individual components of ZIF-8 and UiO-66-NH 2 used as chromatographic stationary phase, the bonded capillary column based on ZIF-8@UiO-66-NH 2 exhibited the improvement in resolution and column efficiency (theoretical plate numbers) ranging from 68.14 to 918.75% and from 3.92 to 398.31%, respectively, and sample loading capacity increased by ≥ 26.8%. Furthermore, an accurate, rapid, and reliable electrochromatography method was developed for the qualitative and quantitative analysis of thiamphenicol and florfenicol in pork meat. The limits of detection and quantification for thiamphenicol were 0.34 μg/mL and 1.75 μg/mL, and for florfenicol, 1.00 μg/mL and 5.82 μg/mL, with sample recoveries in the range of 96.00 to 108.00% and the standard deviations less than 4.59%. This work not only confirmed the potential of MOF@MOF composite as high-performance stationary phases but also broadened the electrochromatography application in food inspection. Graphical
The alternative text for this image may have been generated using AI.
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ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Leheng Wang,Jiyao Zhou,Zimeng Chen,Yi Lu,Guang Huang,Yechen Hu,Changgao Huang,Bangbang Wei,Yun Chen
Trypsin inhibitors (TIs) are common anti-nutritional factors in legumes and grains, necessitating reliable detection for food nutrition assessment and feed safety control. This study took advantage of immobilized enzymes and successfully constructed an efficient magnetic core-shell composite material, Fe 3 O 4 @SA/Trypsin@UiO-66. Within this structure, the sodium alginate (SA) hydrogel provides a mild microenvironment for trypsin immobilization, while the outer UiO-66 metal-organic framework (MOF) shell not only enhances the nanoreactor's stability but also improves substrate enrichment and catalytic efficiency through a nanoconfinement effect. The nanoreactor exhibits robust magnetic separability, well-retained catalytic activity, and long-term applicability. Systematic performance studies revealed that, compared to free enzyme, the nanoreactor exhibited enhanced stability under freeze-thaw cycles and across broad pH (2-11) and temperature (25-70 °C) ranges, maintaining over 70% of its initial activity after multiple uses. In practical sample detection, the established nanoreactor system, which uses the nanoreactor as the core material and benzoyl- l -arginine ethyl ester (BAEE) as the substrate, was successfully applied to analyze TI content in various grain flours and fish feeds. In addition, the results provide evidence supporting the role of thermal processing in reducing TI activity. This research provides a reliable approach for the efficient detection of anti-nutritional factors in complex matrices.
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