SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Meng Jin,Ge Gao,Zeyu Liu,Xiao Meng,Haiyan Wei,Wenwen Chen,Hui Pan,Mengping Zhang,Qiang Jia,Cuijuan Wang
Public concern regarding the illicit addition of diphenhydramine (DPH) to children’s cosmetics highlights the urgent need for robust point-of-use (POU) detection strategies. In addressing this concern, we present a surface-enhanced Raman scattering (SERS)-based method for rapidly identifying and quantifying DPH in children’s creams. Our approach utilizes a multifunctional sensor comprising a cellulose nanofibrils (CNFs) film modified with metal-organic framework-801 (MOF-801) and hedgehog-like gold nanoparticles (GHPs). The synthesized GHPs/MOF-801/CNF sensor functions as both a SERS-active substrate and a sorbent, leveraging abundant nanogaps and sharp tips of the GHPs to amplify SERS signals. The porous CNF and MOF-801 ensure efficient and selective extraction, while the SERS-active GHPs significantly enhance detection sensitivity. The correlation between SERS intensity and logarithmic concentration yielded R-values between 0.926 and 0.978, with the detection limit as low as 0.4 ppb, making it suitable for detecting prohibited DPH additives. This method was successfully applied to two brands of cream samples, with results closely aligning with those from routine chromatography. This method’s key advantage is its exceptional efficiency, completing the detection process within 11 min, making it a user-friendly POU assay for detecting prohibited additives in children’s cosmetics.
研究领域:
分析化学
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纳米生物技术
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食品安全
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药物监测
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环境健康
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
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2022
·Vol. 10
·期 28
·15116-15126
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IF 14.511
Yue Hu,Yuqi Wang,Zhou Fang,Xinyi Wan,Mengyang Dong,Zhizhen Ye,Xinsheng Peng
Developing efficient water adsorbents for atmospheric water harvesting in desert regions still remains a challenge due to the lack of useful strategies to enhance low-pressure water uptakes and adsorption–desorption kinetics. Herein we demonstrate a simple and efficient polyvinylpyrrolidone (PVP) assisted self-assembly strategy for the fabrication of core–shell MOF-801@MIL-101(Cr) (M-8010) supraparticles. The water uptake capacity of the prepared supraparticles is about 225% and 390% higher than that of pure MOF-801 and MIL-101 at 8% RH, respectively, benefiting from the synergistic effect between the preconcentration functions of shell MOF-801 and the high storage capacity of core MIL-101. Fast water capture and release kinetics of M-8010 supraparticles is also achieved. Their water collection rate is estimated to be about 0.253 Lwater/kgadsorbents per day under 10–20% RH, demonstrating that the M-8010 supraparticles are a great potential and stable adsorbent for water harvesting under extremely arid environments. This work may pave a new way to design MOF@MOF supraparticles for high-performance water harvesters in desert areas.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Yuxuan Wu,Wenhui Wang,Junshuo Zhang,Min Sang,Yunqi Xu,Jianyu Zhou,Sheng Wang,Yibing Cai,Shouhu Xuan,Xinglong Gong
Thermophiles can survive in a high-temperature environment due to the synergy of hydrophobic interaction and electrostatic interaction in their proteins. Shear thickening fluid (STF) is a kind of concentrated suspension, which shows shear thickening (ST) behavior and can transform from a liquid state to a solid state under shearing. However, this special phenomenon relies on the hydrogen bonds between particles and dispersing medium. At elevated temperatures, the hydrogen bonds will break and the ST effect will become weaker or even disappear. Herein, inspired by the high-temperature resistance mechanism of thermophile proteins, a novel MOF-801 based STF with better ST effect at elevated temperatures is reported. Specifically, the hydrogen bonds that conventional STF relies on are replaced with hydrophobic interaction and electrostatic interaction, adopting a strategy of dispersing MOF-801 into a mixture containing poly(ethylene glycol), poly(acrylic acid), and Ca 2+ . When the temperature rises to 55 ℃, the storage modulus of M-STF rises from 13 Pa to 2036 Pa, and the suspension transforms to a solid-like state. Thus, a shapeable, self-healing, shear-stiffing, and conductive polymer-like substance can be obtained. In addition, a high-performance composite can be developed by impregnating M-STF into Kevlar, which shows promising applications in lightweight body protection.
研究领域:
材料科学
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生物工程
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化学工程
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机械工程
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产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2024
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IF 6.7
Mengfan Mao,Yexin Zu,Yating Zhang,Yongzhen Qiu,Yue Lin,Fang Luo,Zuquan Weng,Cuiying Lin,Bin Qiu,Zhenyu Lin
Halide perovskites have emerged as a highly promising class of photoelectric materials. However, the application of lead-based perovskites has been hindered by their toxicity and relatively weak stability. In this work, a composite material comprising a lead-free perovskite cesium copper iodide (CsCu2I3) nanocrystal and a metal–organic framework (MOF-801) has been synthesized through an in situ growth approach. The resulting composite material, denoted as CsCu2I3/MOF-801, demonstrates outstanding stability and exceptional optoelectronic characteristics. MOF-801 may serve a dual role by acting as a protective barrier between CsCu2I3 nanocrystals and the external environment, as well as promoting the efficient transfer of photogenerated charge carriers, thereby mitigating their recombination. Consequently, CsCu2I3/MOF-801 demonstrates its utility by providing both stability and a notably high initial photocurrent. Leveraging the inherent reactivity between H2S and the composite material, which results in the formation of Cu2S and structural alteration, an exceptionally sensitive photoelectrochemical sensor for H2S detection has been designed. This sensor exhibits a linear detection range spanning from 0.005 to 100 μM with a remarkable detection limit of 1.67 nM, rendering it highly suitable for precise quantification of H2S in rat brains. This eco-friendly sensor significantly broadens the application horizon of perovskite materials and lays a robust foundation for their future commercialization.
研究领域:
材料科学
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分析化学
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环境科学
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生物传感器
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产品关联
DOI
PubMed
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
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2023
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IF 5.2
Fang-Ru Lin,Zhi-Yuan Liu,Han Zhang,Meng Liu,Hong-Bin Luo,Yang Zou,Xiao-Ming Ren
The development of a highly efficient sensor capable of detecting formic acid is crucial for monitoring air quality and determining the leakage because of the strong corrosivity and pungency. In this work, we present the superiority of a proton conductive metal-organic framework (MOF) thin film as a sensing material for highly efficient detection of formic acid at room temperature. Specifically, MOF-801, a zirconium-based MOF, exhibits exceptional chemical stability and inherent proton conduction, along with a significant surface area and high porosity. Through the solvothermal synthetic method, highly uniform and densely packed thin films of MOF-801 are successfully fabricated on glass substrates. The resulting sensor, based on MOF-801 thin films, displays exceptional sensitivity, selectivity, and durability for detecting formic acid at room temperature, outperforming both other MOFs based sensors and the traditional metal-oxide-based sensors that operate at high temperatures.
研究领域:
材料科学
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传感器
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环境监测
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
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2024
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IF 8.5
Wei Man,Shuo Zhang,Yunlong Wang,Mengjun Wang,Chongjiang Cao,Linyu Nian
The metabolic processes of fruits induce water vapor condensation in packaging, creating a high-humidity microenvironment that exacerbates the proliferation of microorganisms and causes food spoilage. Therefore, a Fe/Zr bimetallic organic framework (Fe-MOF-801) packaging (i.e., FeMGCF) with high binding stability to transpiration water was prepared based on transition metal Fe doping strategy, and the mechanism of its enhanced binding stability towards transpiration water was investigated. The results indicate that Fe enhances the interaction between MOFs and H 2 O by promoting the charge depletion at the O sites coordinated with Zr, thereby increasing the aggregation tendency of H 2 O in the T 1 and T 2 cavities (characterized by strong hydrogen bonding) of Fe-MOF-801, which increased the binding energy of MOFs to H 2 O by 29.6 %. Accordingly, the application of FeMGCF packaging extended the shelf life of tomatoes by 6 days and delayed the degradation of lycopene and anthocyanins during postharvest tomato preservation.
研究领域:
材料科学
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食品科学
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化学
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农业
✓ 已验证
DOI
PubMed
高影响因子
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