INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Jin Chai,Chunpeng Liu,Hongtian Yang,Yide Han,Yufeng Liu,Ying Zhang,Xia Zhang
The bifunctions of fluorescence activity and peroxidase mimics were well-integrated by a hemin chloride-modified Zr-based metal–organic framework (Hemin@NH2-UiO-66), which can catalyze the oxidation of o-phenylenediamine (OPD) to generate 2,3-diaminophenazine (DAP), presenting typical peroxidase mimic properties. The influence of the introduction of hemin chloride upon the enhanced peroxidase mimic activity was clarified, and the nanozyme catalytic parameters were optimized. Interestingly, the oxidized product of DAP presents strong fluorescence emission at 564 nm; combining it with the intrinsic fluorescence emission of NH2-UiO-66 at 452 nm, a dual-emission system could be built up by the resulting Hemin@NH2-UiO-66 in the presence of definite OPD and H2O2. Moreover, the fluorescence quenching effect (564 nm) was observed by adding l-cysteine (l-Cys); based on that, a straight-line dependence of the fluorescence intensity ratio (I452/I564) upon the concentrations of l-Cys was established. The detection limit was 0.21 μmol, and the analytical selectivity for l-Cys was also demonstrated. The work highlights the idea of combining the intrinsic fluorescence property and nanozyme catalytic activity in a functional MOF, and its special usability is found in the ratiometric fluorescence sensing analyses.
研究领域:
生物化学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Water Conservation Science and Engineering
·
2025
·Vol. 10
·期 3
·1-16
·
IF 1.9
Li Zhengjie,Fang Chunxia,Ma Xilong,Liu Yixian,Xie Juan,Li Pengfei,Zhang Zhikun,Zhao Xudong,Sun Hua,Han Jilong
Herein, a facile and rapid preparation method was developed to synthesize Ce-doped UiO-66-NH 2 through a one-pot solvothermal method. This approach simultaneously introduces functional groups onto organic ligands and incorporating a novel metal into metal clusters. The incorporation of Ce ions effectively enlarged the pore size and increased the pore volume, thereby facilitating the diffusion of specific adsorbate molecules into the inner adsorption sites provided by the –NH 2 groups. Due to the favorable pore structures and more exposed adsorption sites, the safranine T (ST) adsorption capacity of Ce-doped UiO-66-NH 2 was ten times higher than the pristine UiO-66-NH 2 and reached 1340 mg/g at optimal adsorption conditions, surpassing most of the reported porous adsorbents. The kinetic and isotherm fitting results showed that the pseudo-second-order and Langmuir models described the adsorption behaviors of ST best, indicating a homogeneous, endothermic, and spontaneous monolayer adsorption process. The adsorption mechanism showed that the hydrogen bonding interaction and pore filling effect are identified as the main mechanism whilst electrostatic attraction interaction further enhances the adsorption capacity at optimal pH. Therefore, Ce-doped UiO-66-NH 2 can serve as a promising adsorbent for the removal of cationic dyes from textile wastewater, and the developed facile and rapid method offers a viable strategy to construct novel MOF-based adsorbents.
研究领域:
环境科学
·
材料科学
·
化学工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2018
·
IF 5.091
Zhibo Yang,Liang Zhu,Lin Chen
Core-shell structured NH 2 -functionalized UiO-66 magnetic composites (γ-Fe 2 O 3 @C@UiO-66-NH 2 ) were fabricated via a simple, facile and green approach to investigate their adsorption behaviors towards different organic dyes (methylene blue, malachite green , acid fuchsin and acid orange II). Different characterization methods containing XRD , TEM , EDXA , FTIR, BET and XPS were used to indicate that the as-prepared γ-Fe 2 O 3 @C@UiO-66-NH 2 material exhibited core-shell structure and excellent surface performance. Adsorption experiments showed that γ-Fe 2 O 3 @C@UiO-66-NH 2 could selectively adsorb anionic dyes and effectively separate the mixture, which might be mainly ascribed to the negatively-charged anionic dyes as opposite to the positively-charged Zr metal sites in γ-Fe 2 O 3 @C@UiO-66-NH 2 . The kinetics and adsorption isotherm of acid orange II and acid fuchsin adsorption in γ-Fe 2 O 3 @C@UiO-66-NH 2 were also investigated. For acid orange II and acid fuchsin, the maximum adsorption capacity obtained from the Langmuir isotherm model was 48.12 mg/g and 31.54 mg/g, respectively. Moreover, γ-Fe 2 O 3 @C@UiO-66-NH 2 exhibited good structural stability and reusability, which suggesting that γ-Fe 2 O 3 @C@ UiO-66-NH 2 as an easy-prepared adsorbent material exhibited great application potential in the selective removal of dyes from water systems.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2019
·
IF 7.015
Jiaqi Wang,Yuqing Zhang,Ying Wang,Shuai Sun
To efficiently clean oily wastewater with the linear anion polyacrylamide (APAM), selective adsorption strategy belonging to phase equilibrium separation is introduced into the membrane separation . Herein, bimetallic Ce-UiO-66-NH 2 /diatomite (CUD) were first synthesized by a one-step hydrothermal method and then employed as a functional layer to form CUD self-assembled membrane (CSA-membrane). CUD particles were characterized by FT-IR, XRD and SEM, and CSA-membrane was observed by SEM. The separation and the selective adsorption properties of CSA-membrane formed under the optimum conditions for APAM in oily wastewater were investigated. The results demonstrate that the size of CUD particles with proper sphericity is mainly 20 μm. Furthermore, CSA-membrane simultaneously exhibits fascinating separation and selective adsorption properties for cleaning oily wastewater, namely the concentration of oil decreases from 78.1 mg L -1 to 6.8 mg L -1 , and flux of CSA-membrane reaches 789.5 L m -2 h -1 . Remarkably, the adsorption capacity of CSA-membrane for APAM is 161.5 mg g -1 , while showing the APAM removal rate of 51.3%. Therefore, CSA-membrane with the synergetic effect of phase equilibrium and rate separation is promising alternative for cleaning oily wastewater with APAM.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
Frontiers of Chemical Science and Engineering
·
2022
·Vol. 16
·期 9
·1387-1398
·
IF 4.803
Han Yuyao,Xia Lei,Zhuang Xupin,Liang Yuxia
UiO-66-NH 2 is an efficient material for removing pollutants from wastewater due to its high specific surface area, high porosity and water stability. However, recycling them from wastewater is difficult. In this study, the cellulose nanofibers mat deacetylated from cellulose acetate nanofibers were used to combine with UiO-66-NH 2 by the method of in-situ growth to remove the toxic dye, rose bengal. Compared to previous work, the prepared composite could not only provide ease of separation of UiO-66-NH 2 from the water after adsorption but also demonstrate better adsorption capacity (683 mg·g −1 ( T = 25 °C, pH = 3)) than that of the simple UiO-66-NH 2 (309.6 mg·g −1 ( T = 25 °C, pH = 3)). Through the analysis of adsorption kinetics and isotherms, the adsorption for rose bengal is mainly suitable for the pseudo-second-order kinetic model and Freundlich model. Furthermore, the relevant research revealed that the main adsorption mechanism of the composite was electrostatic interaction, hydrogen bonding and π — π interaction. Overall, the approach depicts an efficient model for integrating metal-organic frameworks on cellulose nanofibers to improve metal-organic framework recovery performance with potentially broad applications.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2024
·
IF 12.7
Tianchen Zhang,Yijiao Xue,Fei Song,Zheng Pan,Meng Zhang,Yonghong Zhou
As we all know, in the field of safety protection, it is crucial to develop protective materials with fire-retardant and vibration-damping properties. However, it is a challenging task to integrate different properties into a single polymer. To meet this challenge, we successfully developed a functionalized nano flame retardant (UiO-66-NH 2 @DOPO) by modifying UiO-66-NH 2 with 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO). This flame retardant was then incorporated into a porous polyurethane foam (MPUF) synthesized from a bio-based polyol, resulting in a bio-based MPUF composite with excellent vibration-damping, fire-retardant, smoke-suppressing, and anti-dripping properties. Due to the intumescent fire-retardant system formed by UiO-66-NH 2 and DOPO, when the additional amount of UiO-66-NH 2 @DOPO reached 25 %, the LOI value of the MPUF composite material was increased to 31.2 %, and the total smoke production (TSP) was reduced by 80.64 %. In addition, it obtained a V-0 rating in the UL94 test and exhibited excellent anti-dripping properties. In addition, owing to the reinforcement effect and stress dissipation of UiO-66-NH 2 @DOPO, the MPUF composites exhibited excellent energy dissipation and vibration-damping properties (maximum loss factor of 1.32 at 1.0 Hz). This new bio-based MPUF composite material has broad application prospects. It can become an innovative self-supporting vibration-damping and protective material in sports, transportation, and aerospace.
研究领域:
材料科学
·
安全工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2024
·
IF 5.3
Jiawei Zheng,Xiaoyi Zhang,Zhuowa Li,Nanjing Zhong
Immobilization of acid ionic liquid (AIL) for heterogeneous catalysis is benificial for products separation and recycling the AIL for continuing reuse. In this study, AIL was grafted onto the amino group functionalized zirconium-based metal organic framework (NH 2 -UiO-66) to catalyze esterification for short chain fatty acid glycerides synthesis. AIL of 1-(4-Sulfobutyl)-3-Methylimidazolium Hydrogen Sulfate ([HSO 3 -BMIM][HSO 4 ]) was found suitable for short chain fatty acid glycerides after screening varied fatty acids with chain length from 4 to 18. [HSO 3 -BMIM][HSO 4 ] was therefore grafted and butyric acid glyceride was synthesized. Reaction conditions were optimized by means of single factor study and orthogonal experiment. The reusability of the AIL@NH 2 -UiO-66 was evaluated. The AIL@NH 2 -UiO-66 showed good esterificaiton performance and fine reusability. Butyric acid conversion (converted into the glycerides of mono-, di- and tributyrin) at 62.16% was obtained under the optimum conditions. In addition, the present AIL@NH 2 -UiO-66 was quite stable, and 67.39% of its initial esterification activity was retained after 11 cycles of reuse, suggesting it was potential in the esterification reaction.
研究领域:
化学工程
·
催化材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2024
·
IF 3.2
Shipeng Liao,Muhammad Arif,Xingyue Qian,Guangyu He
The development of hybrid heterostructure photocatalysts with enhanced visible light absorption capacity holds significant importance in environmental remediation. However, the challenge persists in exploiting strong visible-light responsive photocatalysts with both high efficiency and stability. Herein, we successfully synthesized a hybrid Z-scheme heterojunction of Bi 2 O 3 and UiO-66-NH 2 (Bi 2 O 3 /UiO-66-NH 2 ) through a simple hydrothermal route. The visible light photocatalytic performance of Z-scheme Bi 2 O 3 /UiO-66-NH 2 heterojunction is systematically evaluated for persistent antibiotic tetracycline hydrochloride (TC-HCl) both in the clean and real water matrix. All heterojunction catalysts exhibit superior photodegradation capabilities compared to pristine Bi 2 O 3 and UiO-66-NH 2 . The optimal ratio of the two components heterojunction (BUN-150), in particular, demonstrates the highest removal efficiencies for TC-HCl (95 %) within a 90-min timeframe. This remarkable photocatalytic performance is credited to the Z-scheme charge transfer occurring at the interface of Bi 2 O 3 and UiO-66-NH 2 in Bi 2 O 3 /UiO-66-NH 2 heterojunction. The active species experiments and electron paramagnetic resonance analyses are conducted to identify the active reactive species during the TC-HCl degradation (·OH, h + , and ·O 2 − ), and a precise photocatalytic degradation mechanism is explained. Additionally, the photodegradation intermediates of TC-HCl are detected using the HPLC-MS analysis to explain the degradation pathways of TC-HCl. This research paves the way for the development of novel Z-scheme Bi 2 O 3 -based heterojunction catalysts for outstanding photocatalytic applications.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Xin Li,Qi-Wen Ma,Guangning Yu,Ji Shi,Hai-Yang Chang,Rong-Rong Zheng,Hengxue Xiang,Cheng Wang
All-inorganic halide perovskite (CsPbX3) nanocrystals (NCs) have garnered significant attention due to their excellent photoelectric properties. However, their practical application has been limited by stability issues. This study presents a strategy combining physical confinement through a carrier matrix and chemical bond coupling to enhance the stability of CsPbX3 NCs significantly under UV irradiation, polar solvents, and thermal conditions. Specifically, CsPbBr3 NCs exhibited near-complete fluorescence quenching within 300 min when treated with water and ethanol. In contrast, CsPbBr3/DMSNs-NH2 nanocomposites retained 86.9% and 75.4% of their initial photoluminescence intensity after 7 days. This enhanced stability is attributed to the multilevel pore architecture of DMSNs-NH2, which effectively prevents direct interaction with water and oxygen. Furthermore, bright white light-emitting diode (LED) devices were successfully fabricated using these nanocomposites, achieving a color temperature of 6045 K and a color gamut covering 133.5% of NTSC and 99% of Rec.2020 standards. This work demonstrates a promising pathway for the development of stable, high-performance perovskite-based optoelectronic devices.
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 7
·1-12
·
IF 5.3
Aham Emmanuel Chigozie,Ravikumar A.,Feng Weiwei,Arunjegan A.,Hu Zhang,Zhang Zhen,Zhao Hongjun
A bifunctional fluorescent and colorimetric sensor based on UiO-66-NH₂@RhB was developed for the highly sensitive detection of perfluorooctanesulfonate (PFOS), a persistent environmental pollutant. The sensing mechanism relies on the inner filter effect (IFE), where Rhodamine B (RhB) modulates the fluorescence of UiO-66-NH₂, enabling effective PFOS recognition. In the presence of PFOS, UiO-66-NH 2 @RhB exhibits dual emissions in blue fluorescence at 448 nm and red fluorescence at 565 nm at a single excitation wavelength. Upon the addition of increasing concentrations of PFOS, the blue fluorescence intensity increased and a small change was observed in the red fluorescence intensity. Besides, UiO-66-NH 2 @RhB solutions display an excellent colorimetric response for PFOS and produce an obvious color change from red to colorless. The method demonstrated high sensitivity, achieving linear detection ranges of 1–10 nM with detection limits of 0.84 nM (fluorescence) and 0.91 nM (colorimetry). Furthermore, the dual-sensing platform successfully detected PFOS in real water samples with satisfactory outcomes. Its integration with a portable smartphone further enables intelligent, real-time, on-site monitoring and is successfully applied to monitoring PFOS in environmental samples. This study not only broadens the application of MOFs but also provides valuable insights for designing multifunctional sensors for diverse analytical applications. Graphical abstract
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Ruimiao Chang,Huichun Wang,Shumian Liu,Yijing Dong,Guangbin Zhang,Anjia Chen,Ruiping Zhang,Yong Li
For rapid separation of quercetin from apple peel, a novel magnetic nanomaterial was prepared by a simple and economical thermal alkaline hydrolysis method in this study. This magnetic nanomaterial was obtained by mixing and then heating magUiO-66-NH 2 (magnetic University of Oslo 66-NH 2 ) with 0.05 mol·L −1 KOH aqueous solution, and was named magUiO-66-NH 2 -MH 0.05 (magUiO-66-NH 2 -mixed heating 0.05 ), which has better magnetic properties, thermal stability, pore capacity and average pore size than magUiO-66-NH 2 . The obtained magUiO-66-NH 2 -MH 0.05 had strong adsorption capacity for quercetin, and the maximum adsorption capacity was 65.30 mg·g −1 . MagUiO-66-NH 2 -MH 0.05 tends to be monolayer-layer adsorption for quercetin, and electron sharing or transfer may occur during the adsorption process. Compared with naringenin, naringin and gallic acid, magUiO-66-NH 2 -MH 0.05 showed good recognition ability for quercetin, and the recovery rate was good. After 7 cycles, the removal rate of magUiO-66-NH 2 -MH 0.05 for quercetin was 96.3 % of the initial adsorption capacity. A magnetic solid-phase extraction method coupled with High-Performance Liquid Chromatography based on magUiO-66-NH 2 -MH 0.05 was successfully used for rapid separation and determination of quercetin in apple peel. This study will help to discover the experimental law of the treatment of UiO-66-NH 2 nanomaterials by hot alkaline hydrolysis, reveal the reaction mechanism, and expand the application of UiO-66-NH 2 nanomaterials in food analysis.
研究领域:
食品科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Ai-Hui Cao,Xin-Tai Su,Min Zhang,Qi-Long Zhu
Photocatalytic water decomposition is a cost-effective way to convert sustainable solar energy into chemical energy. While semiconductor photocatalysis has generated considerable interest in photocatalytic hydrogen evolution, it is hampered by fast electron–hole complexation and suboptimal efficiency. Herein, an NH2-MIL-101(Cr)/doped-C3N4 heterojunction possessing a static internal electric field (IEF) is successfully prepared, characterized, and assessed for photocatalytic hydrogen production. The optimized photocatalytic H2 evolution rate of the resultant NH2-MIL-101(Cr)/O–C3N4 is 460 μmol g–1 h–1 under visible light, with an AQY of 2.5% at 450 nm. Spectral evidence indicates that the static IEF facilitates rapid electron transfer from NH2-MIL-101(Cr) to O–C3N4, achieving efficient photogenerated charge separation and a consequent significant enhancement in catalytic activity. This work not only presents a case of construction of an IEF through assembling NH2-MIL-101(Cr) with O–C3N4 but also deepens the insight of the rudimentary mechanisms of the static IEF in heterojunctions for photocatalytic hydrogen evolution.
研究领域:
材料科学
·
化学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）