SENSORS AND ACTUATORS B-CHEMICAL
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2023
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IF 8.4
Jintao Yan,Liangqiang Chen,Mengjing Teng,Mengdi Hao,Bin Feng,Fan Yang,Hao Shen,Shaoning Yu,Li Wang
Bacillus cereus is one of the most common foodborne pathogens and is widely distributed in foods, soil, water, plants and fodder. As an aerobic Gram-positive bacteria, B. cereus also plays an important role in liquor production, generating flavor enhancers and antibacterial substances. Therefore, a rapid and precise analysis strategy for this microbe is highly desired in food safety and sustainable food production. In this study, we propose an effective approach for B. cereus quantification using a dual recognition biosensor. B. cereus was specifically enriched with aptamer-functionalized magnetic beads, and then detected using the broad-spectrum fluorescent material, fragmented crystalline mannose-conjugated lectin-modified nano-MIL-53(Al)-NH 2 ( [email protected] ). The dual recognition method was applied for specific quantification of B. cereus in the range of 20–2 × 10 8 CFU/mL with a limit of detection of 4 CFU/mL within 60 min. Recoveries ranged from 93.8%−100.8% in milk, rice, chicken meat, eggs, and distilled yeast as real samples were also obtained.
研究领域:
微生物学
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食品科学
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生物传感技术
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
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2025
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IF 5.5
Mengting Ran,Yali Liu,Lu Feng,Jinliang Ning,Jiawen Li,Xincun Dou
The size modulation of metal–organic frameworks (MOFs) is of vital importance in many fields, especially in sensing for enhanced performance, while the synthesis of small-sized MOF nanocrystals with wide active reaction sites remains challenging. Here, we report a general sustainable strategy for building smaller, nanosized, self-assembled, film-forming UiO-66 with abundant active reaction sites via carboxylated cellulose nanofibril (CNF)-induced in situ growth. Benefiting from the remarkably boosted active site quantity, the eliminated background fluorescence, as well as the superior charge transfer between an amino group and an analyte, an efficient fluorescent platform for the detection of the nerve agent analog diethyl cyanophosphonate (DCNP) was established. Not only were a significantly low limit of detection (LOD, 4.2 nM/0.685 ppb) and robust selectivity against a wide range of common substances (>21 types) achieved, but an immediate response to DCNP vapor (<1 s) was also demonstrated by a sensing chip. We believe that the design of UiO-66 with nanosize and monodispersity would help advance the development of high-performance MOF-based fluorescence sensing devices.
研究领域:
材料科学
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化学传感
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环境监测
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产品关联
DOI
高影响因子
RSC Advances
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2020
·Vol. 10
·期 44
·26246-26255
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IF 3.119
Zhu Ding,Shuo Wang,Xue Chang,Dan-Hong Wang,Tianhao Zhang
Photocatalytic nitrogen fixation has attracted extensive attention in recent years. Studies have shown that catalytic materials with O, N and other defects can effectively reduce the bond energy of NN triple bond when N2 is adsorbed on the defects. As an outstanding non-metallic catalyst, g-C3N4 has been widely studied in the field of photocatalytic catalysis, and the nitrogen-defected C3N4 shows promoted photocatalytic activity. Herein, nano-size MOF-74 particles (<20 nm) was dispersed on nitrogen-defected C3N4 thin film (∼4 nm) via a simple sol–gel method. The combination of Nano-MOF and defected film C3N4 could effectively improve the photocatalytic activity of nitrogen fixation through Z-scheme mechanism compared with pure defected film C3N4.
研究领域:
材料科学
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环境科学
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化学
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry B
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2025
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IF 5.7
Rong Luo,Zhao Chen,Man Zhe,Wenting Wu,Yuzhen Xiao,Jiabao Jiang,Hao Liu,Ming Liu,Fei Xing
The management of bone defects poses a significant challenge for clinicians, necessitating effective strategies to regulate immune inflammation, angiogenesis, and osteogenic differentiation for successful bone regeneration. In this study, we developed a novel hydrogel composed of carboxymethyl chitosan (CMCS) and gelatin methacryloyl (GelMA) designed for the sustained release of the bioactive component calcitonin gene-related peptide (CGRP) and zeolitic imidazolate framework-8 (ZIF-8). CGRP was initially encapsulated within ZIF-8 and subsequently integrated into the CMCS/GelMA hydrogel matrix. In vitro evaluations revealed that the hydrogel exhibited exceptional biocompatibility and antimicrobial properties, effectively promoting osteogenesis and angiogenesis while modulating M2 macrophage polarization. Furthermore, in vivo assessments indicated that the CGRP@MOF/CG hydrogel significantly regulated the local immune microenvironment and accelerated the healing of cranial defects in rat models. This study provides valuable references for the design and fabrication of multifunctional materials for enhancing bone regeneration.
研究领域:
生物材料学
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组织工程学
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再生医学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
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2023
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IF 6
Li Wang,Ji-Xiang Guo,Xiao-Jun Zhang,Chen-Hao Gao,Rui-Ying Xiong,Wyclif Kiyingi,Dan Luo
Oil shale is of increasing interest as it is considered an essential alternative to traditional energy sources due to its abundant reserves. In this research, nanoscale Co/MOF and Ni/MOF were prepared by modified methods, and the catalytic pyrolysis mechanism of oil shale was studied using structural characterization and pyrolysis experiments. The TG and DTG curves show that MOF catalysts increase the total weight loss rate of oil shale pyrolysis and decrease the temperature corresponding to the initial temperature, final temperature, and maximum weight loss rate of oil shale pyrolysis. Kinetic analysis shows that Co/MOF and Ni/MOF catalysts reduce the activation energy of oil shale pyrolysis reaction by 32 KJ/mol and 25 KJ/mol, respectively. The change in the yield and composition of the products before and after catalytic pyrolysis was compared through the dry distillation experiment. It was found that MOF had a good catalytic effect, and the shale oil output was significantly increased. The FT-IR and GC/MS analysis of the catalytic pyrolysis of shale oil shows that the addition of Co/MOF and Ni/MOF catalysts is conducive to the increase of aromatics, olefins , and alkanes and the decrease of oxygen-containing compounds. The effect of the catalysts on the nature of the products and on the yields suggests that the Lewis and Bronsted acid groups on the surfaces of the MOF catalysts and that these can induce positive charges on carbon atoms in alkanes, alkenes etc to promote pyrolysis generate more oil.
研究领域:
能源化学
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催化材料科学
✓ 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）