COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Ruixue Yan,Hao Guo,Zeyun Yang,Wenting Niu,Jianpeng Ma,Liping Peng,Mingyue Wang,Wu Yang
Alterations in guanine (GA) and adenine (AE) levels within the human body are intricately linked to overall health and daily physiological functions. Therefore, it is crucial to develop an accurate and sensitive sensor for quantifying the levels of GA and AE. In this present paper, a novel electrochemical sensor NH 2 -MXene@COF TA-DH /GCE was constructed by in-situ growing COF TA-DH with high crystallinity, good thermal stability and N-rich active centers based on Schiff base condensation reaction of 1, 3, 5-tris-(4-aminophenyl) triazine (TAPT) and 2,5-dihydroxyl-terephthalaldehyde (DHTA) on highly conductive NH 2 -MXene and then modifying it on the surface of the glass carbon electrode (GCE). The highly dispersed sandwich structure of NH 2 -MXene@COF TA-DH significantly increases the specific surface area and exposes a greater number of active sites. Benefitted from remarkable synergistic effect, the sensor exhibited excellent electrochemical catalytic activity and high sensitivity for GA and AE detection. The sensing platform was successfully used for simultaneous detection of GA and AE with wide linear ranges of 0.6–230 μM and 1–450 μM and low detection limits of 0.07 μM and 0.44 μM, respectively. This study expands applications of COFs and MXene in electrochemical biosensing platform and provides a general and valuable strategy for COFs-based electrochemical sensor construction for biomedical investigations
研究领域:
生物医学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
HIGH PERFORMANCE POLYMERS
·
2025
·
IF 1.6
Zhiqing Liang,Zhongying Liu,Xiuyuan Wei,Hui Wu,Chanjuan Liu,Xiaohua Huang
Bifunctionalized NH2-UiO-66-CF3 nanofillers were successfully prepared by grafting - CF3 on NH2-UiO-66 via aldehyde-amine condensation reaction and applied to the preparation of 6FDA-ODA/NH2-UiO-66-CF3 mixed matrix membranes (MMMs). The successful introduction of -NH2 and -CF3 groups was verified by FT-IR, XRD, and XPS characterization, and the integrity of the crystal structure was ensured. Due to the presence of hydrogen bonding, NH2-UiO-66-CF3 showed good interfacial compatibility with the polymer matrix. Due to the introduction of the - CF3 group, the MMMs exhibited excellent thermal stability (T10% > 500°C, Tg = 300°C–305°C), hydrophobicity (contact angle of 92.96–97.71), and mechanical properties (tensile strength of 74–85 MPa). The gas separation performance tests showed that the MMMs exhibited significantly improved gas permeability and selectivity compared to the pure 6FDA-ODA membranes, which was attributed to the fact that the -NH2 and -CF3 groups provided more adsorption sites for gases. In particular, the PI/NUF(10) MMMs showed the best performance, with permeabilities of 42.71, 9.22, and 92.79 Barrer for CO2, O2, and He, respectively, which were 248%, 213%, and 173% higher than those of the pure membranes. Meanwhile, the selectivities of CO2/N2, O2/N2 and He/N2 were improved by 37%, 24%, and 8%, respectively. Close to the Robeson upper limit, demonstrating excellent gas separation potential.
研究领域:
材料科学
·
化学工程
·
膜技术
·
气体分离
·
纳米技术
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Huijing Ma,Bing Yu,Qingping Wang,Gary Owens,Zuliang Chen
While Fe-based metal-organic frameworks (MOFs) can be used to remove antibiotics by adsorption, knowledge of how antibiotics are degraded by MOFs is still limited. In this study, one Fe-based MOF, NH 2 -MIL-88B was used to remove pefloxacin from aqueous solution via a combination of adsorption and Fenton-like oxidation. NH 2 -MIL-88B exhibited a high adsorption capacity for pefloxacin (41.37 mg·g −1 ), with >99% removal efficiency within 120 min based on Fenton-like oxidation. To better understand the mechanisms involved in integrated adsorption and Fenton-like oxidation, various advanced characterization techniques were used to monitor the changes in morphology and composition of NH 2- MIL-88B before and after removal of pefloxacin. Scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) all supported adsorption and Fenton oxidation of pefloxacin. In addition, the pefloxacin degradation products identified by LC-UV and LC-MS provided information on the potential adsorption-Fenton oxidation mechanism. These results suggested that NH 2 -MIL-88B has remarkably potential to be used in an integrated adsorption and Fenton-like process for the removal of antibiotics from aqueous solution.
研究领域:
环境科学
·
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Xiaoyu Du,Gan Wu,Xilin Dou,Zhaoyang Ding,Jing Xie
Food prone to spoilage has a huge food safety hazard, threatening people’s health, so early detection of food spoilage is a continuous and urgent need. Herein, we developed a dual-mode response sensor, alizarin complexone@UiO-66-NH 2 , which can accurately detect pH. The sensor demonstrated significant changes in color from pale yellow to deep pink, while the fluorescence shifted from light blue to blue violet. Moreover, both UV absorption and fluorescence intensity showed a linear correlation with pH raging from 4.5 to 7.5. These results indicate that the sensor effectively responds to pH, making it suitable for detecting the freshness of perishable food. To put this into practice, we integrated the sensor with cellulose-based filter paper to determine the freshness of shrimp and beef, which was proved to be effective in assessing freshness. In the future, it can be combined with intelligent colorimetric and fluorescence instruments to achieve visual detection.
研究领域:
食品科学
·
化学传感
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2024
·
IF 10.7
Yajun Gao,Suhui Xu,Ge Guo,Yajie Li,Wenyuan Zhou,Huaxiang Li,Zhenquan Yang
Herein, novel nanozyme mimics MoO 3 /MIL-125-NH 2 were reported and conjugated with bacteriophages as a new electrochemical probe for high sensitivity and specific electrochemical detection of staphylococcus aureus . The excellent peroxidase-like activity of MoO 3 /MIL-125-NH 2 composites was attributed to the integration of MIL-125-NH 2 with MoO 3 , which can boost the generation of superoxide radicals (O• 2 – ) and thus promote the oxidation of TMB in the presence of H 2 O 2 . In this work, two bacteriophages named SapYZU04 and SapYZU10 were isolated from sewage samples by using staphylococcus aureus YZUsa12 as the host. In comparison, MoO 3 /MIL-125-NH 2 @SapYZU04 was selected as a recognition agent. The DPV current declined linearly with staphylococcus aureus YZUsa12 concentration in the range of 10 1 −10 8 CFU mL −1 , with a low detection limit of 16 CFU mL −1 (S/N = 3). 20 strains including 13 host strains and 7 non-host strains were used to evaluate the selectivity of the proposed sensor. Regardless of the differences in the degrees of lytic performance for phage SapYZU04, all selected host strains can be screened with merely the same DPV current. Host spectrum-oriented bacteriophage sensing is of great importance for the practical application of bacteriophage-based biosensors in the future.
研究领域:
生物传感
·
电化学检测
·
微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Xue Men,Rong Li,Aiwen Su,Yanli Zhang,Lian-Xun Gao,Chengxin Wu,Hongbin Wang,Wenrong Yang,Pengfei Pang
Protein kinase A (PKA) plays a significant role in the regulation of biological activities by the phosphorylation of the specific proteins or substrate peptides. The highly sensitive and reusable electrochemical biosensor has been developed to detect PKA activity based on the specific coordination between Zr 4+ and phosphate group. In this strategy, the specially designed substrate peptide can be anchored on the surface of gold electrode by Au-S bond. In the presence of adenosine triphosphate (ATP) and PKA, the substrate peptide is phosphorylated. Due to the large surface area of MOF and rich Zr 4+ active sites, signal molecule Thionine (Thi) can be absorbed into the cavity of NH 2 -Zr-MOF by the electrostatic interaction to form NH 2 -Zr-MOF@Thi signal probe. The phosphorylated peptide is linked to NH 2 -Zr-MOF@Thi probe because of the strong coordination interaction between Zr 4+ and phosphate group. Therefore, the number of Thi close to the electrode surface is increased and the response signal experiences amplification, markedly enhancing the sensitivity of the detection of PKA activity, which provides an excellent electrochemical sensing platform for PKA activity detection. The response signal of the electrochemical biosensor is proportional to the logarithm of PKA concentration, ranging from 0.05 U mL −1 to 100 U mL −1 , and the limit of detection of this biosensor for PKA is 0.017 U mL −1 when the signal-to-noise ratio is 3. In particular, the proposed method can selectively distinguish the target from other interferents, and can be used to screen potential small molecule inhibitors and detect PKA activity in complex cell samples. Therefore, the developed electrochemical biosensor can be used as a new way for the determination of PKA activity and the screening of its inhibitors in the future.
研究领域:
生物化学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Mazhar Khan,Zeeshan Akmal,Muhammad Mubashir Khan,Muhammad Tayyab,Seemal Mansoor,Muhammad Adnan Zeb,Amir Zeeshan,Ziwei Ye,Jinlong Zhang,Shiqun Wu,Lingzhi Wang
Metal-organic framework (MOF) based heterojunctions offer a promising strategy for CO 2 photoreduction, contributing to carbon neutrality and environmental remediation. However, the precise design and control of these heterostructures remain critical challenges. Herein, we report the precise construction of a heterostructure by integrating 2D ZnIn 2 S 4 nanosheets with NH 2 -MIL-125(Ti) for efficient CO 2 photoreduction in a sacrificial agent-free environment. A comprehensive investigation demonstrates robust interfacial interactions and work function differences between NH 2 -MIL-125(Ti) and ZnIn 2 S 4 , facilitating the formation of an interfacial electric field and enabling the construction of an S-scheme heterojunction. The directional migration of photogenerated charge carriers effectively suppresses their recombination, retaining the strong oxidative and reductive potential of the heterostructure components. In-situ infrared spectroscopy provides concrete evidence that the S-scheme heterojunction significantly enhances the formation of key intermediates, which are crucial for CO generation. The optimized NMT-5@ZIS achieves a CO yield of 17.30 umol g -1 h −1 without sacrificial agents, representing 8.6 and 6.6-fold improvements over pristine NH 2 -MIL-125(Ti) and ZnIn 2 S 4 , respectively. This work bestows an innovative insight into the construction of MOF-based S-scheme heterojunctions, opening new avenues for practical applications in energy storage and photocatalysis.
研究领域:
材料科学
·
环境科学
·
纳米技术
·
催化
·
能量转换
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2016
·
IF 4.803
Juan Yang,Lite Yang,Huili Ye,Faqiong Zhao,Baizhao Zeng
In this work, highly dispersed AuPd alloy nanoparticles (NPs, 3–6 nm) decorated amino-functionalized Zr(IV)-based metal–organic framework (i.e. UiO-66-NH 2 ) was prepared via a novel adsorption/reduction method in ethanol-water solution. In this process, the UiO-66-NH 2 acted as both supporting platform and protective agent. The pores of UiO-66-NH 2 could limit the aggregation and migration of AuPd alloy NPs. The resulting AuPd/UiO-66-NH 2 catalyst possessed large specific surface area and excellent stability and dispersity in aqueous media. When it was used to construct a nitrite sensor, the composite material exhibited higher catalytic activity than the metal counterparts (i.e., Au/UiO-66-NH 2 and Pd/UiO-66-NH 2 ) due to the strong metallic synergistic effect. The electrochemical study demonstrated that the AuPd/UiO-66-NH 2 based sensor had an extended linear response concentration range of 0.05–5666 μ M for nitrite detection, with a detection limit of 0.01 μ M. It was successfully applied to determine nitrite in sausage and pickle samples.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Xiangtao Tang,Lihong Lu,Fang Yang,Xingyu Zhong,Hongfa Shi,Wenqing Zhang,Lingfan Zhang
The treatment of radioactive wastewater containing 90 Sr required advanced adsorbents to address the limitations of the recyclable usage. In this study, a UiO-66-NH 2 @Chitosan/Loofah Fiber Composite (UNCL) was synthesized using an impregnation strategy, enabling easy separation from the solution and efficient Sr 2+ removal. By integrating the good adsorption activity of UiO-66-NH 2 , interfacial modification capability of chitosan, and macrostructural advantages of loofah fiber, the composite achieved enhanced mass transfer efficiency and structural stability. UNCL achieved adsorption equilibrium within 120 min, demonstrating rapid and efficient strontium capture capability. The material demonstrated robust performance under alkaline conditions, and retained high efficacy in real river water and seawater environments. Adsorption behavior aligned with the Sips isotherm model (R 2 = 0.999) and pseudo-second-order kinetics (R 2 = 0.995) with maximum adsorption capacity of 7.64 mg/g, confirming monolayer chemisorption. Mechanistic investigations, supported by FT-IR and XPS analyses, revealed a synergistic mechanism involving ion exchange, surface complexation and electrostatic interactions at multiple active sites. UNCL maintained approximately 90 % removal efficiency after five adsorption–desorption cycles and enabled facile separation from aqueous solutions through simple mechanical retrieval. These results demonstrated that UNCL combined adsorption ability, reusability, and environmental adaptability, positioning it as a promising and practical solution for Sr 2+ remediation.
研究领域:
环境科学
·
材料科学
·
化学工程
·
核技术
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2016
·
IF 5.31
Hongxu Guo,Dongfang Wang,Jianhua Chen,Wen Weng,Minqiang Huang,Zishan Zheng
A novel metal-organic framework (MOF) material, flake-like NH 2 -MIL-53(Cr), was prepared by a simple reflux method and then characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). The as-prepared MOF was found to be an effective material for the selective electrochemical detection of microgram levels of Pb 2+ in aqueous solution. Detection was performed by square wave anodic stripping voltammetry. The NH 2 -MIL-53(Cr)-modified electrode showed excellent selectivity and stability for Pb 2+ detection. The electrochemical properties and applications of the modified electrode were studied. Operational parameters such as pH, deposition potential, and deposition time, were also optimized to detect trace amounts of metal ions. This method offers a new strategy for heavy metal detection using MOF materials.
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 17
·14228-14239
·
IF 2.779
Liu Jieling,Yang Jiaji,An Shuyue,Wen Meiqi,Wang Xian,Gong Rongzhou,Nie Yan
Metal-organic framework (MOF) crystals have promising applications in a number of different fields, but the growth of MOF crystals with controllable morphology and high uniformity remains a major challenge. By taking the advantage of the synergistic effects of water molecules in the mixed solvent and polyvinylpyrrolidone (PVP) surfactants, this work demonstrates an approach for the preparation of NH 2 -MIL-88B(Fe) MOF crystals with both highly customizable size and aspect ratios and high uniformity. The effects of the concentration of water in the mixed solvent and the amount of PVP surfactants on the morphology and size of the MOF crystals were investigated. The morphology and crystalline properties were characterized by scanning electron microscopy and X-ray diffraction techniques. The data showed that through controlling the concentration of water in the solvent and the amount of the PVP surfactant, the size of the MOF crystals can be tuned rather widely, over 344–5.14 μm, while the aspect ratio of the crystals can be varied widely over 1.0–7.1. Possible mechanisms for such high tunability were discussed. As an example of potential applications, the complex permeability and permittivity of MOF-derived composites (25 wt%) were measured over a wide frequency range of 2–18 GHz. The parameters were then used to evaluate the potential for electromagnetic wave absorption. The results indicate that the composite with a thickness of only 1.2 mm exhibits a “− 10 dB” absorption bandwidth of 4.1 GHz and a minimum reflection of − 20 dB. Such bandwidth and reflection properties provide inspiration for future design of lightweight, broadband electromagnetic wave absorbers from the perspective of fine morphology control.
研究领域:
材料科学
·
化学工程
·
电磁学
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Kuirong Feng,Lingxin Meng,Jingmei Xu,Pengyun Zhao,Na Li,Jinxuan Lei
In this paper, UiO-66-NH2 was successfully modified with a phosphate group by a Schiff base reaction. The phosphate and amine bifunctionalized UiO-66-NH2 (PUIN) was successfully prepared. A series of composite membranes were prepared by adding PUIN fillers to sulfonated poly(aryl ether ketone sulfone) (FSPUIN-X) containing fluorene groups. The introduction of PUIN containing both phosphate and amino bifunctional groups increased the number of proton transport sites within the membrane and facilitated the construction of continuous proton transport channels. The addition of PUIN resulted in a significant increase in the proton conductivity of FSPUIN-X due to the introduction of more proton transport sites. The conductivity of FSPUIN-5 (174.22 mS cm–1) was 1.46 times higher than that of pure membranes (119.32 mS cm–1) at the same condition. And the open-circuit voltage and power density of FSPUIN-5 also reached 0.957 V and 0.54 W cm–2, respectively. The structure and morphology of PUIN and membranes were characterized by Fourier infrared (FT-IR), X-ray polycrystalline diffraction (XRD), nuclear magnetic resonance hydrogen spectrum (1H NMR), and scanning electron microscopy (SEM). Meanwhile, the PUIN also strengthened the mechanical properties of FSPUIN-X series membranes. All of the results indicated that the introduction of phosphate and amine bifunctionalized UiO-66-NH2 promoted the comprehensive performance of the composite membranes.
研究领域:
材料科学
·
能源科学
✓ 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）