COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2017
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IF 2.714
Jiang-Bo Huo,Lei Xu,Jia-Cheng E. Yang,Hao-Jie Cui,Baoling Yuan,Ming-Lai Fu
Water stable Fe 3 O 4 @ZIF-8 composites were successfully fabricated by a facile modification. The composites were characterized by powder XRD, SEM, TEM and BET surface areas measurement. The results showed that as-obtained Fe 3 O 4 @ZIF-8 composites possess core-shell structures (Fe 3 O 4 as core and ZIF-8 as shell) with a high surface area (1133 m 2 g −1 ). The composites were also evaluated for adsorption of As(III) from solution. Langmuir model could be suitable to express the adsorption isotherm, indicating that the uptake of As(III) on Fe 3 O 4 @ZIF-8 is monolayer adsorption with maximum capacity being 100 m 2 g −1 . Thermodynamics data revealed that the adsorption followed a spontaneous, endothermic and entropy increase process. Batch adsorption experiments demonstrated that the adsorption kinetics fit pseudo-second-order better with correlation coefficient R 2 of 0.9881. The effects of anions such as chloride, nitrate, carbonate, phosphate and sulfate on the removal of As(III) were also examined. The results indicated that ordinary anions would not hinder adsorption of As(III) except that the carbonate and phosphate anions could compete with As(III) for adsorptive sites on the adsorbent. This research showed Fe 3 O 4 @ZIF-8 is a promising composite in practical application as it can be easily separated by magnetism after used in the water treatment with efficient removal of As(III) from aqueous solution.
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高影响因子
ACS Applied Nano Materials
·
2024
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IF 5.3
Lirong Zhang,Beibei Yu,Zijian Zhuang,Zhengzou Fang,Mengke Lu,Huijun Yu,Xiao Xu,Xin Sun,Fengyi Du,Miaomiao Zhang
Artesunate (Art) with a unique peroxy-bridging bond can react with a ferrous ion and produce excess carbon-centered radicals, which cause irreversible damage to tumor cells. However, the antitumor effect of artesunate still faces challenges due to its poor water solubility and insufficient amount of ferrous ions in tumor cells. Herein, we constructed artesunate coordinated zeolite imidazole framework nanoplatforms (Art/ZIF NPs) coated with ferric ion-rutin network (Ru–Fe@Art/ZIF NPs) for synergy therapy. In virtue of zinc-ion-mediated coordination, Art was efficiently loaded into ZIF-8 NPs (loading capacity and rate are 29.58 and 30.73%) and responsively released under an acidic environment. Meanwhile, the introduction of rutin (a type of plant flavonoid) not only enabled tumor targeting via GLUT receptors but also reduced Fe3+ to Fe2+ under acidic conditions. Subsequently, these ferrous ions loading with Art enhance the tumor killing effect via radical-dependent cell cycle arrest. This “core–shell” autocatalytic nanoplatform provides a novel strategy for developing Art-based chemodynamic therapy.
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BIOSENSORS & BIOELECTRONICS
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2025
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IF 10.5
Xu Yang,Fan Wu,Haowei Huang,Guojun Zheng,Hongyu Zhang,Wenrong Cai,Junyao Li,Zheng-Zhi Yin,Yong Kong
Wearable sensors can easily enable real-time and noninvasive glucose (Glu) monitoring, providing vital information for effectively preventing various complications caused by high glucose level. Here, a wearable sensor based on nanozyme-catalyzed cascade reactions is designed for Glu monitoring in sweat. Au nanoparticles (AuNPs) are anchored to the carbonated zeolitic imidazolate framework-8 (ZIF-8-C), endowing the sensor with Glu oxidase (GOx)-like and peroxidase (POD)-like activity. A flexible screen-printed carbon electrode (SPCE) is decorated with the resultant AuNPs@ZIF-8-C, which is further modified with biocompatible and swellable calcium alginate (CA) gels for the preparation of the wearable Glu sensor. The linear range for Glu detection is 10∼300 μM with a limit of detection (LOD) of 4.99 μM, which covers the physiological Glu concentration range in human sweat (10–200 μM). The developed wearable Glu sensor can fit well with the skin tissues due to the flexibility of the SPCE, and thus it can be successfully applied in real-time and noninvasive monitoring of Glu in human sweat. Additionally, the wearable Glu sensor exhibits high antibacterial activity resulted from the generated hydroxyl radicals (·OH), enabling long-term Glu monitoring in sweat.
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PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Xingjie Lu,Zhen Liu,Xin Wang,Yuekun Liu,Hongchao Ma,Meiwen Cao,Wentao Wang,Taihong Yan
Novel MnO 2 @ZIF-8 nanocomposites were synthesized for efficient adsorptive removal of Sr 2+ from aqueous solution. ZIF-8 nanoparticles with controlled morphology and size were first synthesized by using amino acids to modulate the crystal nucleation and growth. Then, a layer of MnO 2 nanoparticles were deposited on ZIF-8 surface by using the adsorbed amino acid molecules as binding sites to mediate MnO 2 mineralization and by adjusting the reactive KMnO 4 concentration to control the size and surface density of the MnO 2 nanoparticles . The as-prepared MnO 2 @ZIF-8 nanocomposites showed a core-shell structure and displayed superior performance in Sr 2+ adsorption and removal from aqueous solution. The adsorption process can be described well by the pseudo-second-order equation. The adsorption isotherm accords well with the Langmuir model and the maximum adsorption capacity can reach 65.7 mg/g. The study paves a new way to develop novel inorganic nanocomposites as highly efficient and potential adsorbents for the treatment of radionuclide-containing wastewater.
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ChemistrySelect
·
2024
·Vol. 9
·期 8
·e202304917
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IF 1.9
M. S. Tao Song,M. S. Yimin Wang,Zhen Yuan,Hai Liu,B. S. Xiaoli Zhang,B. S. Li Cui,B. S. Yuewen Chen,Tianxia Liu,Xiya Zhang
Graphical The porous carbon material derived from Cu-doped ZIF-8 is first utilized for the electrocatalytic reduction of CO 2 to CO, exhibiting a CO Faradaic efficiency of 89 % and a satisfactory stability for over 13 hours. The high content of pyridinic nitrogen, large surface area, average pore size, and the presence of Cu-N 4 particles are proven to facilitate CO 2 adsorption and enhance the catalytic performance. Electrochemical reduction of carbon dioxide presents a promising pathway to tackle global energy and environmental challenges. Porous carbon materials from metal-organic frameworks exhibit high specific surface area, abundant active sites, and adjustable pore structure, demonstrating excellent electrocatalytic performance. With their abundant resources and tunability, copper-based catalysts are well-suited for efficient carbon dioxide conversion. However, the selectivity and stability of copper-based catalysts is poor. This study presents the preparation of the first Cu-doped ZIF-8-derived carbon materials and investigates their effect on electrocatalytic carbon dioxide reduction. At the optimal potential of −0.7 V vs . RHE, the CO Faradaic Efficiency (FE) of the Cu 0.5 -N−C catalyst reaches 89 %. Furthermore, the electrochemical current density and CO FE of Cu 0.5 -N−C catalyst remain nearly unchanged within 13 hours in 0.1 mol L −1 KHCO 3 electrolyte. Compared to most of the reported copper-based catalysts, Cu 0.5 -N−C exhibits better stability. Characterization results show that Cu 0.5 -N−C has a larger Cu-N 4 , higher pyridinic N content, larger specific surface area, and average pore size, which help promote CO 2 adsorption and enhance catalyst stability. This work provides new insights and pathways for electrocatalytic carbon dioxide reduction, with enormous potential to contribute to the global energy transition and environmental protection.
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Journal of Food Measurement and Characterization
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2024
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IF 2.9
Pang Wanyu,Gao Yali,Chang Xile,Hu Tuoping,Hu Zhiyong,Ma Xuemei
An electrochemical sensing platform based on in-situ acetylene black (AB) template growth ZIF-8 for trace catechin detection in green tea was proposed. Here, the ZIF-8/AB/carbon paper (CP) electrode was constructed by two-step in-situ growth method and hydrothermal method. The characterization showed that AB molecule was well distributed in ZIF-8 pore with large surface area. ZIF-8/AB/CP electrode showed good electrochemical performance for catechin detection, which benefited from the ZIF-8 with larger surface and AB with excellent conductivity. The results showed that ZIF-8/AB/CP electrode was linear in the range of 0.01–200 µM, and the low detection limit for catechin detection was 43.7 nM. ZIF-8/AB/CP also had good reproducibility, anti-interference ability and stability. In addition, the sensor achieved hight-recovery and accuracy in detecting catechin in green tea. As far as we know, our work first reported that ZIF-8/AB composite was synthesized by in-situ growth method as an electrochemical sensing material for the detection of catechin in green tea, which will provide some theoretical analysis and experimental experience for designing and developing electrochemical sensor for the analysis of trace catechin.
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ACS Applied Nano Materials
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2024
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IF 5.3
Congyue Sun,Zhongcheng Zhao,Dongyan Xu,Xiaojin Li,Ke Ye
The rapid development of proton-exchange membrane fuel cells needs to develop Pt-based oxygen reduction reaction (ORR) catalysts with activity and stability. In this study, PtCu alloy nanoparticles were in situ anchored on an N-doped porous carbon (NC) derived from ZIF-8 with a chemical reduction method to produce a PtCu/NC catalyst with a Pt loading of 7.96 wt %. The PtCu alloy nanoparticles are uniformly immobilized on the NC with a high surface area via a metal–support interaction. The electrochemical test results demonstrated that the PtCu/NC catalyst displays remarkable activity with an E1/2 value of 0.913 V vs RHE, higher than 0.878 V vs RHE for the commercial Pt/C. The ORR mass activity of the PtCu/NC catalyst is 1.49 and 6.54 times that of PtCu/XC-72 and commercial Pt/C, respectively. The eminent ORR performance of PtCu/NC is attributed to the high specific area of NC and electron-rich Pt sites enhanced by electron transfer from the N and Cu atoms. Moreover, PtCu/NC exhibited better catalytic stability than PtCu/XC-72 and Pt/C after 3000 potential cycles, attributed to the interaction between the N atom and PtCu alloy.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Yongwei Cai,Yao Chen,Ruru Wang,Jianxiang Li,Hong Yang,Yuanju Li,Danni Qu
Developing a superhydrophilic/underwater oleophobic mesh membrane using an economical and eco-friendly method is still challenging to achieve high efficiency for oily wastewater separation. In this study, we proposed a novel approach to fabricate superhydrophilic/underwater oleophobic PVP/ZIF-8 coatings on stainless steel (SS) mesh using a low-cost and environmentally friendly electrodeposition method. The prepared PVP/ZIF-8@SS mesh membrane exhibited remarkable self-cleaning and anti-oil-fouling properties, along with a strong chemical robustness in extreme environments. Additionally, the mesh membrane demonstrated strong antimicrobial ability and excellent corrosion resistance property. The mesh membrane also showed promising potential in gravitational oil-water separation and oil recovery, achieving a separation efficiency of 99.0% and a water flux of 3.8 × 10 3 L·m −2 ·h −1 for rapeseed oil-water mixtures. Importantly, the PVP/ZIF-8@SS mesh membrane maintained exceptional separation efficiency, high water flux, and underwater oleophobicity properties even after undergoing 35 cycles of oil-water separations. The oil-water separation mechanism of the PVP/ZIF-8@SS mesh membrane suggested that the surface of the mesh membrane contained PVP/ZIF-8 particles with a significant negative charge. These particles preferentially interacted with positively charged water, facilitating the rapid passage of water phase through the pores, while impeding the permeation of negatively charged oil phase. This research provides an effective strategy for practical applications, including marine oil spill cleanup, oily wastewater treatment, and recycling of residual cooking oil in the restaurant industry.
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JOURNAL OF ORGANOMETALLIC CHEMISTRY
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2025
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IF 2.4
Ke Yang,Sisi Cheng,Shijia Li,Kun Zhu,Ziqin Yao
The influencing factors of ZIF-8 synthesis were systematically investigated by the green synthesis method and the samples were also compared with ZIF-8 synthesized in other ways, and an optimal synthesis route was found by exploring the synthesis conditions. On this basis, the synthesis mechanism of ZIF-8 was analyzed. The research results show that the key influencing factors in the reaction process are the amount of NaOH and the pH value of the system. Different amounts of NaOH will produce different intermediates, and these intermediates further affect the pH value of the entire reaction system. The pH value of the system plays a decisive role in the deprotonation process of the ligand in the reaction, and this process is the key to whether the ZIF-8 structure can be formed. It is worth mentioning that the ZIF - 8 synthesized in this study demonstrates varying removal performances for different dyes under different conditions. Under specific conditions, it exhibits the maximum removal rate for Rhodamine B (RhB), reaching 99.97 %. This excellent removal performance is closely associated with the pore - structure characteristics of the synthesized material, which fully indicates that the ZIF - 8 synthesized through the green route has certain application potential and promising application prospects in related fields.
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CARBOHYDRATE POLYMERS
·
2024
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IF 10.7
Ting Su,Hongxia Shang,Xinru Su,Zhixian Sun,Yuehan Li,Linwen Li,Zhen Zhang,Renyong Geng,Shuisheng Chen
In this investigation, a hydrogel adsorbent featuring remarkable efficiency in dye adsorption was successfully synthesized by the integration of natural polysaccharide (pullulan) and nanoparticles (ZIF-8@PDA). The prepared natural polysaccharide nanocomposite hydrogels not only exhibit superior mechanical strength and biocompatibility, but also demonstrate adeptness in the removal of dye pollutants. The dye removal capacities were 615.4 mg/g for malachite green (MG) and 525.8 mg/g for Congo red (CR), respectively. Notably, the adsorption process exhibits minimal susceptibility to variations in water quality and the presence of co-existing ions. The pH-responsive surface charge conversion capability of the adsorbent renders it recyclable, maintaining a dye adsorption performance exceeding 88 % even after 5 cycles of repeated usage. Overall, these environmentally friendly natural polysaccharide nanocomposite hydrogels hold potential for addressing complex wastewater treatment challenges and long-term use.
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PubMed
高影响因子
OPTICAL FIBER TECHNOLOGY
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2024
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IF 2.6
Yuhao Chen,Xiaozhan Yang
A Michelson interference dimethyl methyl phosphate (DMMP) fiber sensor with a single-mode (SMF)-dislocated single-mode (DSMF)-hollow-core fiber (HCF) structure is proposed. To fabricate the Michelson interference structure of SMF-DSMF-HCF, one end of the DSMF was misaligned and fused to the SMF, the other end was fused to the HCF to generate a reflective surface. The structure, elemental composition, and surface morphology of ZIF-8@Ag were analyzed using X-ray diffraction, X-ray photoelectron spectroscopy, and scanning electron microscopy after the ZIF-8@Ag/PDDA composite was coated on the surface of DSMF. The result shows that the sensitivity and the detection limit of the sensor are 45.71 dB/ppm and 0.1431 ppb, respectively, and the response/recovery time is around 14/12 s. The sensor also has excellent selectivity and stability.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Yipeng Zhang,Zhangze Yang,Yucheng Zou,Shahzad Farooq,Zeyu Qin,Hui Zhang
Aiming to meet the demand for rapid detection of chlorpyrifos (CPS), a surface-enhanced Raman scattering (SERS) sensor based on a gluten/zein electrospun film (GZEF) was fabricated via electrospraying. The SERS performance was namely improved through metal nanoparticles selection and optimization of loading amounts. Further construction of the AANS@ZIF-8@GZEF sensor was achieved through in-situ growth. Owning to the porous structure of ZIF-8, the trapping ability and enrichment effect of the SERS sensor were enhanced, resulting in a superior SERS enhancement effect of 1.58 times. Moreover, the CPS detection under various concentrations was carried out using the AANS@ZIF-8@GZEF sensor. The concentration-logarithm peak intensity equations were fitted, and the limit of detection (LOD) of CPS was calculated to be 0.981 μg/L. Finally, the detection of CPS residues on the peel of apples was performed using the AANS@ZIF-8@GZEF sensor, and the results showed that the overall recovery rate ranged between 91.18% and 96.83%, with all relative standard deviations being less than 5%. Great potential applications in the rapid and sensitive detection of chlorpyrifos in food are expected for the AANS@ZIF-8@GZEF sensor constructed in this study.
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