ACS Applied Materials & Interfaces
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2021
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IF 9.229
Xue Ma,Jinghua Zhang,Chong Zhang,Xiaoqing Yang,Ajuan Yu,Yanjie Huang,Shusheng Zhang,Gangfeng Ouyang
Aminothiols are closely related to chronic kidney disease, but little is known regarding levels of related aminothiols in the urine of immunoglobulin A vasculitis with nephritis (IgAVN) patients. Herein, a well-defined core–shell Zr-based metal–organic framework (Zr-MOF) composite SiO2@50Benz-Cys was constructed as a mercury ion affinity material via a solvent-assisted ligand exchange strategy for the selective extraction and enrichment of low-concentration aminothiols in IgAVN patient urine. SiO2@50Benz-Cys was competent to enrich the total glutathione (GSH) and total homocysteine (Hcy) in virtue of the excellent affinity after chelation with mercury ions. The extraction efficiencies were closely related to the pH, dithiothreitol amount, and the dose of functional Zr-MOF. Coupled with HPLC–MS/MS in optimized conditions, GSH and Hcy were determined with low detection limits of 0.5 and 1 nmol L–1, respectively. The recoveries of GSH and Hcy for the urine sample at three spiked levels were in the range of 85.3–105% and 79.5–103%, which showed good precision and accuracy. Benefiting from the matrix interference elimination in the process of extraction, the simultaneous detection of aminothiols in the urine of the healthy group and immunoglobulin A vasculitis (IgAV) and IgAVN patients was successfully carried out, suggesting that the Zr-MOF and the robust method together provided a potential application in the analysis of urinary biomolecules. The analysis of variance (ANOVA) showed that the levels of GSH and Hcy had significant differences between the patients and the control. This work is very valuable as it provides a better understanding of concentration alterations of GSH and Hcy in urine involved with IgAVN for clinical research.
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SENSORS AND ACTUATORS B-CHEMICAL
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2019
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IF 6.393
Xin Li,Bangxiang Liu,Kun Ye,Liang Ni,Xuechao Xu,Fengxian Qiu,Jianming Pan,Xiangheng Niu
Due to the role of phosphate (PO 4 3− ) as an indicator of eutrophication pollution, developing low-cost and high-performance approaches to detect it turns to be of great significance. Herein, we developed a highly sensitive and specific colorimetric sensor for PO 4 3− determination via utilizing Zr 4+ to synergistically inhibit the peroxidase-like activity of Fe 3 O 4 nanocubes. The decoration of hydrophilic 3,4-dihydroxyhydrocinnamic acid (DHCA) on Fe 3 O 4 endows it with enhanced ability to catalyze the 3,3′,5,5′-tetramethylbenzidine (TMB) chromogenic reaction. Because of electrostatic interaction, Zr 4+ is easy to be adsorbed onto the negatively charged Fe 3 O 4 -DHCA nanozyme. When PO 4 3− is added, it can interact with Zr 4+ and form a coating on Fe 3 O 4 -DHCA surface, significantly suppressing its peroxidase-mimicking activity. As a result, the TMB chromogenic reaction is seriously inhibited in the presence of PO 4 3− . Based on this strategy, PO 4 3− in the wide scope of 0.066–33.3 μM could be linearly determined, providing a detection limit down to 49.8 nM. Thanks to the strong and specific interaction between Zr 4+ and PO 4 3− , the colorimetric sensor could be employed to detect PO 4 3− with favorable selectivity. Reliable analysis of the target in practical water was also verified by our assay, indicating its great potential as a simple but efficient tool for environmental monitoring.
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CHEMISTRY-A EUROPEAN JOURNAL
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2013
·Vol. 19
·期 42
·14279-14285
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IF 5.831
Dengrong Sun,Yanghe Fu,Wenjun Liu,Lin Ye,Dengke Wang,Lin Yang,Xianzhi Fu,Zhaohui Li
Graphical Higher CO 2 photoreduction activity than previously studied metal–organic framework (MOF) NH 2 -MIL-125(Ti) in the presence of triethanolamine (TEOA) as the sacrificial agent under visible light is exhibited by the amino-functionalized MOF NH 2 -Uio-66(Zr). The photoinduced electron transfer from 2-aminoterephthalate linkers to Zr oxo clusters was revealed for the first time by photoluminescence studies, and the generated Zr III was detected by ESR analysis (see figure). Metal–organic framework (MOF) NH 2 -Uio-66(Zr) exhibits photocatalytic activity for CO 2 reduction in the presence of triethanolamine as sacrificial agent under visible-light irradiation. Photoinduced electron transfer from the excited 2-aminoterephthalate (ATA) to Zr oxo clusters in NH 2 -Uio-66(Zr) was for the first time revealed by photoluminescence studies. Generation of Zr III and its involvement in photocatalytic CO 2 reduction was confirmed by ESR analysis. Moreover, NH 2 -Uio-66(Zr) with mixed ATA and 2,5-diaminoterephthalate (DTA) ligands was prepared and shown to exhibit higher performance for photocatalytic CO 2 reduction due to its enhanced light adsorption and increased adsorption of CO 2 . This study provides a better understanding of photocatalytic CO 2 reduction over MOF-based photocatalysts and also demonstrates the great potential of using MOFs as highly stable, molecularly tunable, and recyclable photocatalysts in CO 2 reduction.
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FUEL
·
2016
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IF 3.611
Zhenhuan Xiao,Huacong Zhou,Jianmin Hao,Hailong Hong,Yinmin Song,Runxia He,Keduan Zhi,Quansheng Liu
As the fast depletion of coal resources, exploring the value-added utilization approaches of low rank coals or their components and, in parallel, promoting the conversion of sustainable resources (such as biomass) into useful chemicals are critical issues facing human society. In this work, we used humic acids (HAs), an abundant material in nature (mainly derived from low rank coals), and the transition metal zirconium (Zr) to prepare a novel Zr-containing hydrogen transfer catalyst. The prepared catalyst was applied into the conversion of biomass-derived ethyl levulinate (EL) into gamma-valerolactone (GVL) via hydrogen transfer reaction. Both the preparation conditions of the catalysts and the reaction parameters during the conversion of EL into GVL were systematically investigated. The catalyst was characterized by SEM, TEM, FTIR, powder XRD, and TG analysis. The results demonstrated that the as-prepared catalyst was highly efficient for the conversion of EL into GVL. Under optimized conditions, EL could be completely converted and the GVL yield could reach up to 88.3%. The catalyst could be used at least 11 times without notable changes in both activity and structures, indicating an excellent stability. As far as we know, this is the first work using HAs to prepare Zr-containing catalyst and its application to the conversion of EL into GVL in biomass utilization.
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MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Xing Cheng,Yue Tang,Xiaohuan Huang,Linghui Huang,Han Tao,Yuangen Wu
Artificial enzymes have attracted much attention in food analysis because of their simple preparation, low cost, and strong stability. However, the most used artificial enzymes are based on oxidoreductases such as oxidase, peroxidase, catalase, and laccase. There are few reports on hydrolases like phosphatase for food analysis. Herein, a novel green zirconium-glutamic acid (Zr(IV)-Glu) complex was prepared using Zr ions and glutamic acid. The Zr(IV)-Glu complex was first found to possess excellent phosphatase-like activity, which was used to establish a fluorescent sensor for detecting phytic acid (PA). The Zr(IV)-Glu complex can catalyze the hydrolysis of 4-methylumbellione phosphate disodium salt (4-MUP) to produce blue fluorescent products with fluorescence emission peaks at 448 nm. PA with six phosphate groups can attach on the surface of Zr(IV)-Glu to form Zr-O-P bond and inhibit the catalytic activity of Zr(IV)-Glu, leading to the decrease of fluorescence in the system. The change of fluorescent intensity at 448 nm was positively correlated with the PA content, so that a fluorescent sensor using the phosphatase-like activity of Zr(IV)-Glu was proposed to detect PA. The established sensor has high sensitivity, low detection limit (LOD) of PA to 58 μg·L -1 , strong anti-interference ability, and excellent selectivity. This work can provide a new method for PA detection in food and further expand the application of phosphatase mimics.
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INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Chao Yang,Hao Chen,Yuankai Li,Zhelin Su,Yeshuang Wang,Xufei Liu,Huiling Fan
The low sulfur selectivity of Fe-based H2S-selective catalytic oxidation catalysts is still a problem, especially at a high O2 content. This is alleviated here through anchoring FeOx nanoclusters on UiO-66 via the formation of Fe–O–Zr bonds. The introduced FeOx species exist in the form of FeIII and FeII. Therein the FeIII–O species are the predominant active sites for H2S-oxidation. The formed Fe–O–Zr bonds strengthen the redox cycle of FeIII/FeII through promoting electron transfer from Fe to Zr. The FeII–O species can activate molecular oxygen to oxidize H2S into elemental S, which accelerates the formation rate of atomic S, hindering its further oxidation into SO2. The combination of these factors empowers the catalysts, enabling 100% H2S conversion and 98.2% sulfur yield. The catalyst also has satisfactory stability with the sulfur selectivity only decreasing from 98.2% to 91.3% after the reaction going on 50 h. The decreased sulfur selectivity might be caused by the deterioration of pores and the deposition of elemental S on the surface. The former hinders the diffusion of sulfur oligomers timely from pores to the gas phase, while the latter is suspected to capture electrons to promote its further reaction with molecular oxygen.
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FOOD CHEMISTRY
·
2025
·
IF 9.8
Zhen Wu,Jinlong Wang,Xing Cheng,Yue Tang,Lian Xia,Xiaojuan Niu,Yuangen Wu
Nanozyme-based sensors for detecting ascorbic acid (AA) generally depend on the reducibility of the analyte. However, these sensors are susceptible to interference from reducing substances in food. Herein, a novel fluorescent sensor for AA detection was developed based on inhibiting the phosphatase-like activity of a Zr-based metal-organic framework (Zr-CAU-28). Hydroxyl-rich AA molecules adsorb on the surface of Zr-CAU-28 through hydrogen bonding with [Zr 6 O 4 (OH) 4 ] cluster, leading to a decrease in the relative content of terminal hydroxyl groups within the catalytic sites. The constructed sensor exhibits a wide detection range (0.08–11 μg·mL −1 ) and low detection limit of 0.025 μg·mL −1 . Potential interfering studies demonstrated the good selectivity of the sensor. Moreover, the fluorescent sensor can effectively detect AA in juices and vitamin C tablets, with the recovery rate ranging from 96.25 % to 108.50 %. This work represents the first application of phosphatase mimics for AA detection, offering a new strategy for food analysis.
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ELECTROPHORESIS
·
2024
·
IF 3
Jiao Long,Yan Gao,Kangjia Sheng,Tao Bao,Sicen Wang
In this study, an efficient and practical method was established to enrich and detect three trace quinolones in fish tissue. Low-cost and environment-friendly cotton threads were coated with PCN-224 using a simple one-pot hydrothermal method. The PCN-224-modified cotton threads (PCN-224@CTs) were characterized to ensure that the crystal was successfully fabricated on the surface of cotton threads. The prepared PCN-224@CTs were wrapped around steel needles to form suspended bars. Key factors of extraction and desorption were optimized, and analytical performance was tested. Suspended bar sorptive extraction coupled with ultra-performance liquid chromatography (UPLC) with a photodiode array detector was used to analyze the quinolones in fish tissue. The detection limits of quinolones were 0.26–1.15 ng/mL, and the recoveries were achieved in the range of 81.31%–115.81%, indicating a simple method with high sensitivity and satisfactory practicability of enriching, separating, and detecting trace quinolones was successfully established.
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CERAMICS INTERNATIONAL
·
2025
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IF 5.6
Huilin Lun,Yi Zeng,Xiang Xiong,Houbu Li,Ziming Ye,Xiaoxu Liu
This work introduces fabricating single-phase ternary-anion carbide solid solution via solid-state diffusion of B and N. Initially, non-stoichiometric (Zr,Hf,Ti)C x with carbon vacancies was synthesized by modified spark plasma sintering. Then, using B 2 O 3 and g -C 3 N 4 as sources, (Zr 0.3 Hf 0.5 Ti 0.2 )(C 0.87 B 0.03 N 0.07 ) with face-centered-cubic structure was produced via B diffusion at 1100 °C and N diffusion at 1600 °C. Trace B (0.23 wt%) and N (0.71 wt%) in (Zr 0.3 Hf 0.5 Ti 0.2 )(C 0.87 B 0.03 N 0.07 ) was found to significantly enhance the oxidation resistance (higher onset temperature 520 ± 3 °C (particle size 2.5 ± 1.3 μm) than 475 ± 3 °C of (Zr 0.3 Hf 0.5 Ti 0.2 )C 0.85 and improve structural stability with more negative binding energy.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2025
·Vol. 46
·期 2
·117844
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IF 6.2
Zhuangzhuang Ma,Yunhao Wang,Tianhao Rui,Yulin Lan,Linyuan Lu,Yang Yu,Mingxuan Deng,Tianxing Lan,Zhekang Zhao,Zhen Teng,Haibin Zhang
High-entropy pyrochlore ceramics with the nominal composition Eu 2 B 2 O 7 , incorporating up to five equiatomic B-site cations, were synthesized via a solid-state reaction method and evaluated their aqueous chemical durability for nuclear waste immobilization. Comprehensive characterization using XRD, Raman, and SEM analyses confirmed the formation of a single-phase pyrochlore structure with uniform and random elemental distribution. However, secondary phases were observed in the Ce- and Nb-doped samples, which is attributed to the larger ionic radius of Ce and the higher valence state of Nb. The 42 days leaching tests revealed normalized element release rates ranging from 10 −5 to 10 −7 g/(m 2 ∙d), significantly lower than those of conventional pyrochlore materials. This enhanced durability is attributed to synergistic effects of electronegativity, ionic radius, and atomic number, which together hinder cation diffusion and strengthen chemical durability at the B site. These findings demonstrate the potential of Eu 2 B 2 O 7 high-entropy pyrochlore ceramics as long-term host materials for high-level radioactive waste. This study provides a valuable resource for enriching the thermophysical properties database of B-site high-entropy pyrochlore solidification, thereby supporting their engineering development.
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Journal of Physical Chemistry C
·
2025
·
IF 3.2
Xuan Liu,Yujie Yan,Feifei Guo,Liangliang Chang,Zengzhe Xi,Chunsheng Zhou
This study demonstrates a tripartite strategy to significantly enhance the piezo-photocatalytic degradation of ofloxacin (OFL) using modified BTO@BGFZ9 composite nanoparticles. Gd/Zr codoping optimizes the band structure and ferroelectricity of BFO, while heterojunction construction with BTO promotes interfacial charge separation. Corona poling treatment further aligns ferroelectric domains to amplify the piezoelectric field. The optimized 0.4BTO@BGFZ9 composite achieved 88.96% OFL degradation within 120 min under ultrasonic and visible-light synergy with a first-order rate constant of 0.0175 min–1. Mechanistic studies reveal that VO and a type-II heterojunction facilitate the generation of dominant reactive species (•O2– and h+), enabling efficient OFL mineralization via piperazine ring cleavage and defluorination.
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JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Yu Liu,Mingyang Xu,Lingxin Zhao,Shufei He,Likui Feng,Liangliang Wei
The dissemination of antimicrobial resistance (AMR) in wastewater treatment poses a severe threat to the global ecological environment. This study explored the effectiveness of photocatalysis in inactivating antibiotic resistant bacteria (ARB) and quantitatively clarified the inhibiting rate of the transfer of antibiotics resistance genes (ARGs). Herein, the magnetic heterojunction as UiO-66-NH 2 @CuFe LDH-Fe 3 O 4 (UN-66@LDH-Fe) effectively facilitated the electron-hole separation and accelerated the photogenerated charge transfer, thereby guaranteeing the stable practical application in aeration tanks. Notably, the internal electric field of heterogeneous photocatalyst resulted in significant increase of ARGs inactivation, achieving 5.63 log of ARB, 3.66 log of tet A and 3.57 log of Ampr genes were photodegraded under optimal reaction conditions within 6 h. Based on the complex microbial and molecular mechanism of multiple-ARB communities inactivation in photo-treatment, the photogenerated reactive oxygen species (ROSs, ·OH and ·O 2 − ) effectively destroyed bacterial membrane protein, thereby the intracellular ROSs and redox cycles further induced oxidative stress, attributing to the abundance reduction of ARGs and their host bacteria. Moreover, long-term (7 days) continuous operation preliminarily verified the practical potential in reducing AMR spread and developing wastewater treatment efficacy. Overall, this study presented an advantageous synergistic strategy for mitigating the AMR-associated environmental risk in wastewater treatment.
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