TALANTA
·
2025
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IF 6.1
Yuting Zhuang,Mengqi Jian,Huiqi Yan,Xin Lv,Yue Zhang
Selenium is a nutritionally essential trace element for human health, but efficient or excessive intake both causes physiological diseases. Here, we propose that selenium as a brightening agent significantly increase the peroxidase (POD)-like activity of MXene@CeO 2 , which CeO 2 nanoparticles in-situ grow on MXene as the sensing platform. Based on the selenium-stimulated POD-like activity of MXene@CeO 2 , a simple, low-cost, and reliable colorimetric method is constructed for quantitative analysis of selenium. The great advantage of MXene@CeO 2 platform selecting selenium as brightening agent exhibits good selectivity for other 23 interfering ions, allowing the discrimination of selenium in practical samples rapidly and precisely even at 3.5 nM. Moreover, MXene@CeO 2 platform selectively catalyze the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) instead of 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium (ABTS) under the same condition. This study not only offers a utility sensing platform for quick detection of selenium but also opens an avenue for the rational design of element sensors for point-of-care application.
研究领域:
生物化学
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医学检测
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材料科学
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产品关联
DOI
PubMed
高影响因子
INTEGRATED FERROELECTRICS
·
2022
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IF 0.836
Ran Wang,Qi Li,Juanjuan Yin,Zhiwei Liu,Lili Gao,Tifeng Jiao
Cubic fluorite CeO2 has band gap energy similar to that of TiO2, exhibiting a certain photocatalytic activity, and it can be widely used to adsorb and degrade various organic dyes. Herein, self-assembled MXene-CeO2 composites with CeO2 nanoparticles uniformly loaded on the surface and between the layers of MXene was prepared by the hydrothermal method. Through the microstructure analysis of MXene-CeO2 composites, it was proved that the MXene could not only effectively prevented the accumulation of CeO2 nanoparticles during the production process but also provided a large attachment site for the generation of nanoparticles. In addition, the self-assembled MXene-CeO2 exhibited good adsorption efficiency for adsorption of the cationic dyes rhodamine B (RhB) and methylene blue (MB) under ultraviolet light irradiation. Therefore, the prepared MXene-CeO2 composite nanomaterial has significantly higher performance in degrading dyes and can be widely used in wastewater treatment.
研究领域:
材料科学
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环境科学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2022
·
IF 9.224
Shengqiu Zhao,Rui Wang,Tian Tian,Hao Liu,Haining Zhang,Haolin Tang
The chemical durability of the membrane is a central issue in the development of proton exchange membrane fuel cells (PEMFCs), while incorporating cerium oxide as a free radical scavenger is one effective strategy to enhance durability. However, simultaneous dispersion and anchoring of cerium oxide in PEM have rarely been reported. Herein, MXene–CeO2 hybrids are prepared by self-assembly-cooperating in situ nucleation growth routes, then the MXene–CeO2 is sprayed on the cathode side of the r-PEM to fabricate a hybrid membrane with free radical resistance. The in situ nucleation growth of CeO2 on MXene nanosheets carriers effectively inhibits agglomeration and induces an anchoring effect through their interaction forces, forming CeO2 nanoparticles with a high specific surface and stable attachment, maximizing the free radical scavenging impact at the forefront of the membrane. The hybrid membrane with a loading of 0.1 mg cm–2 MXene–CeO2 exhibits a lower OCV decay rate (0.53 mV h–1), thickness variation (2.8%), and hydrogen crossover (2.6 mA cm–2) and higher maximum power density (1222.5 mW cm–2) than pristine r-PEM after accelerated degradation testing for 150 h.
研究领域:
材料科学
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能源工程
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2024
·
IF 2.5
Cansen Liu,Qingmei Chen,Canhai Cai,Jianyu Xu
Developing ecofriendly anticorrosion coating has great demand for marine protection. Incorporation of nontoxic inorganic fillers into waterborne epoxy (WEP) coating shows tremendous potential for enhancing corrosion resistance. However, the application of MXene/WEP coating is limited by the poor dispersion of MXene in WEP and insufficient corrosion resistance. Herein, a polydopamine (PDA) modified MXene-CeO 2 @PDA (MCP) filler is constructed by a combination of CeO 2 with MXene and embedded into WEP to form ecofriendly anticorrosion MCP/WEP coating. Dispersion of MXene in WEP is improved by the introduction of CeO 2 and PDA modification. Benefiting from the synergy of the physical labyrinth effect of MXene and the chemical inhibition effect of CeO 2 , MCP/WEP coating exhibits remarkable anticorrosion behavior in 3.5 wt% NaCl solution with a low corrosion rate (CR) of 4.48 × 10 −6 mpy, which is three orders of magnitude lower than that of blank WEP (4.78 × 10 −3 mpy). Moreover, MCP/WEP presents long-term and stable corrosion protection for over 30 days. The results reveal the incorporation of MCP significantly promotes the anticorrosion performance of WEP.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2023
·
IF 7.3
S. Jiang,H. Zhang,Z. Li,L. Chen,L. Yin,X. Liu
Non-invasive sweat detectors can monitor the glucose level of diabetes in a painless way. However, most detectors need to collect enough sweat through external exercise or active stimulation, which increases the inconvenience of the user and reduces the applicable population. In this study, we propose an ultra-sensitive biomimetic glucose detector to detect the sweat produced by thermoregulation without additional exercise and stimulation. Inspired by the predator process of sponge in the sea, the sensing material of MXene (Ti 3 C 2 T x ) @CeO 2 hydrogels employed the “laminae-trestle-laminae” (L-T-L) structure of sponge to adsorb and transport glucose molecules in sweat. CeO 2 grafted onto the MXene surface can detect glucose by the catalytic activity of CeO 2 . The glucose detector with an ultra-low limit of detection (LOD = 0.004 μM), excellent sensitivity (801.27 μA⋅μM − 1 ⋅cm − 2 ), and a broad linear detection range (LDR = 0.01–2.5 μM) can satisfy detection requirements in human sweat after dilution. In real applications, the detector can detect glucose in the sweat of diabetic patients for five consecutive days and detect the glucose content in the daily drinks of patients. Our findings demonstrate the high potential of sponge-inspired MXene@CeO 2 glucose detector for routine medical testing.
研究领域:
生物医学工程
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材料科学
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医学检测
✓ 已验证
DOI
高影响因子
Plasmonics
·
2026
·
IF 5.6
Han Huibo,Singh Ragini,Niu Ben,Zhou Penglei,Zhang Bingyuan,Kumar Santosh
Ochratoxin A (OTA) is a potentially harmful mycotoxin that is widely found in agricultural products and animal by-products. In order to ensure our physical health, OTA testing is very important. Therefore, we chose to use an optical fiber biosensor based on the principle of local surface plasmon resonance (LSPR), and we designed an asymmetric optical fiber structure using single-mode optical fiber (SMF) to detect different concentrations of OTA. Gold nanoparticles (AuNPs) were applied to the sensing region to stimulate the LSPR effect, and then Nb 2 CTxMXene and CeO 2 -nanorods were sequentially fixed on the probe to change the dielectric environment around the sensing region to improve the performance of the sensor. The sensor has a linear range of 0.5 ng/mL to 60 ng/mL, a sensitivity of 0.0805 nm/(ng/mL), and a limit of detection (LOD) of 3.95 ng/mL. After that, we evaluated it through a series of tests, including repeatability, reproducibility, pH, stability, and selectivity. Finally, we also tested and verified the real samples. According to the experimental results, the sensor shows good performance in OTA detection, indicating that the sensor has good application potential and broad development prospects. This work designed an asymmetric optical fiber biosensor based on LSPR, achieving a broad detection range and a low LOD for OTA detection by coating with AuNPs, Nb 2 CTxMXene, and CeO 2 -nanorods. Its reliability and vast prospects in practical applications were validated through repeatability, stability, and real sample testing.
✓ 已验证
DOI
高影响因子
Advanced Healthcare Materials
·
2025
·
IF 9.6
Qianyu Guo,Miaomiao Zhang,Jinyao Zheng,Zongjia Li,Yuanhao Zhang,Ying Chen,Yu Chen,Xiue Jiang,Jilin Tang
Chronic wounds infected with drug-resistant bacteria present a formidable clinical challenge, exacerbated by antibiotic overuse that severely compromises healing. Herein, a multifunctional therapeutic hydrogel wound dressing is developed to address these challenges. This advanced nanocomposite hydrogel incorporates cerium dioxide-doped MXene nanosheets (MXene@CeO 2 ) within a glycidyl methacrylate-modified gelatin (GMA-Gelatin) matrix and crosslinked into a hydrogel under UV irradiation (GMAG-GEL), forming a near-infrared (NIR)-responsive material (MXene@CeO 2 /GMAG-GEL). This incorporation enhances the mechanical strength of the hydrogel and creates a protective microenvironment for wound repair. In the acidic environment of bacterial infections, MXene@CeO 2 /GMAG-GEL facilitates the electrostatic capture of bacteria. Synergizing with its photothermal capability, it exhibits exceptional antibacterial activity, effectively killing drug-resistant bacteria and disrupting bacterial biofilms. After eradicating the infection, MXene@CeO 2 /GMAG-GEL further alleviates oxidative stress, promotes cell migration and angiogenesis, and induces macrophage polarization toward an anti-inflammatory phenotype. In vivo studies confirmed MXene@CeO 2 /GMAG-GEL significantly accelerates wound closure and tissue regeneration. This work overcomes the key challenges of antibiotic resistance, persistent inflammation, and impaired tissue regeneration, presents a comprehensive therapeutic strategy for drug-resistant bacterial wound infections through a single multifunctional platform.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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