JOURNAL OF MATERIALS SCIENCE
·
2025
·Vol. 60
·期 48
·25762-25778
·
IF 3.9
Shehu Mustapha Sani,Saeed Alaaddin M. M.,Cao Gui-Ping,Al-Fatesh Ahmed S.,Alreshaidan Salwa B.,BaQais Amal,Zhang Qi-Jia,Wang Chun-Xue,He Xin-Yi
In this study, a novel rhodium nanocatalyst was developed through the immobilisation of rhodium nanoparticles onto multi-walled carbon nanotube substrates (Rh/MWCNTs), demonstrating high catalytic efficiency in the hydrogenation of styrene–butadiene rubber (SBR). The catalytic process led to the formation of a novel cyclic block rubber (CBR). The Rh/MWCNTs catalyst demonstrated exceptional activity, enabling the complete hydrogenation of both the aromatic benzene units and the aliphatic C = C bonds present in the SBR backbone. High-resolution transmission electron microscopy (HRTEM) confirmed the uniform dispersion and stable immobilisation of Rh nanoparticles across the MWCNTs surface. The catalyst’s excellent activity, coupled with its high stability and reusability, indicates its effectiveness in mitigating diffusion constraints and enhancing the interaction between catalytic sites and the polymer matrix. The successful conversion of SBR to fully hydrogenated CBR was corroborated by nuclear magnetic resonance (1H-NMR and 13C-NMR) and Fourier-transform infrared (FTIR) spectroscopy. Thermogravimetric analysis (TGA) revealed enhanced thermal stability of the synthesised CBR relative to the parent SBR. While a significant thermal degradation for SBR occurred at 360.5 °C, CBR remained stable up to 409.2 °C. Furthermore, differential scanning calorimetry (DSC) analysis showed that SBR had lower Tg values (− 45.1 °C heating, – 54.9 °C cooling), reflecting greater chain flexibility, whereas hydrogenated CBR exhibited higher Tg (− 33.4 °C, − 34.4 °C), confirming the enhanced thermal characteristics introduced by the hydrogenation process.
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高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 12
·855
·
IF 5.3
Li Jianlong,Zhang Jinmi,Hu Maoyuan,Jin Yao,Li Sheng,Xiong Xiaoli
As the most active antioxidant in the flavonol family, quercetin (QR) exhibits favorable biochemical and pharmacological properties. Therefore, rapid and accurate determination of QR is of great importance. In this study, a π-conjugated molecule, 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) was employed to in-situ grow a conductive metal-organic framework (MOF) on CuCo-zeolitic imidazolate framework (CuCo-ZIF) by a simple one-step solvothermal coating method. This design enhances electron transfer, ultimately yielding a bimetallic MOF-on-MOF hybrid material (CuCo-ZIF@HHTP). The introduction of Cu improves the conductivity of the ZIF framework, while the π-π conjugation characteristic of HHTP further boosts the electrocatalytic performance of CuCo-ZIF. As an electroctalytic eletrode, an electrochemical sensor for sensitive detection of QR was developed, which exhibited excellent linear responses in two concentration ranges (0.25–35 µM and 35–155 µM) with an extremely low limit of detection (LOD) of 7.5 nM (S/ N = 3). The sensor also demonstrated high selectivity and reproducibility, with successful application in the quantification of QR in food samples. Graphical A π-conjugated HHTP was coated on CuCo-ZIF via one-step solvothermal method to form CuCo-ZIF@HHTP with Cu enhancing conductivity and HHTP's π-π conjugation boosting electrocatalysis for sensitive QR detection in food samples.
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PubMed
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2025
·
IF 12.6
Chunhua Ma,Yingzhi Zhou,Zhaocong Yang,Jing Wang,Lu Zhu,Hongyu Chen,Yanqin Wang,Hongmei Wang,Jie Sun,Xiuli Chen,Wei Zhou,Xuemei Li,Liangming Liu
The mechanism of sepsis related liver injury (SRLI) is unclear and its treatment method is unsatisfactory. The aim of this study was to investigate the effects of BRCC3 on SRIL and preparation of kupffer cells membrane encapsulated ZIF-8 loaded BRCC3 siRNA (K-EVs@ZIF-8@siRNA) to target BRCC3 to treatment of SRLI. Liver tissues from control mice and SRLI mice were used for RNA sequencing for searching differential genes. The cercal ligation and punchure (CLP) model and lipopolysaccharide (LPS) model were used to evaluate the mechanisms of BRCC3 and the effects of K-EVs@ZIF-8@siRNA on SRLI. The results of RNA-Seq showed BRCC3 and NLRP1were significantly increased in Kuepfer cells of liver tissues of SRLI mice. BRCC3 and NLRP1 have co-localization in Kuepfer cells. It was also found that knock out BRCC3 had protective effects on SRLI via deubiquitylation modification of NLRP1 to inhibit of NLRP1. K-EVs@ZIF-8@siRNA was successfully prepared in this study and exhibited the characteristics of nanoparticles. K-EVs@ZIF-8@siRNA could be enriched in liver tissues and also be absorbed by Kuepfer cells. K-EVs@ZIF-8@siRNA significantly alleviated SRLI by inhibition the BRCC3/NLRP1 signaling pathway. In conclusion, BRCC3 as a key marker was identified in SRLI and K-EVs@ZIF-8@siRNA was successfully prepared for treating SRLI. This study provides a new target and treatment for SRLI.
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PubMed
高影响因子
JOURNAL OF FLUORESCENCE
·
2025
·
IF 3.1
Xue Jinxiong,Huang Jingping,Lin Xue,Pan Wuyuan,Ke Fang
MicroRNA-183-5p is a clinically relevant biomarker, yet its detection is hindered by short sequence length, high homology, and low abundance in complex biological fluids. We report a hydrothermally synthesized nickel chloride-decorated graphitic carbon nitride (NiCl 2 @g-C 3 N 4 ) with intrinsic peroxidase-like and fluorescence activities for label-free dual-mode detection. Characterized by multiple spectroscopic and microscopic techniques, the nanocomposite enables quantitative analysis via π-π stacking and van der Waals interactions between the probe and target, eliminating the need for enzymes or fluorescent labels. Under optimal conditions, using the formula LOD = 3Sb/b, the detection limit was calculated as 0.69. This material with broad linear ranges, excellent selectivity, month-long stability, and recovery rates of 97.7-101.6% in spiked serum. This facile and cost-effective platform offers a promising tool for sensitive miRNA quantification in clinical diagnostics.
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PubMed
高影响因子
FOOD SCIENCE AND BIOTECHNOLOGY
·
2025
·
IF 3.1
Song Yang,Li Tingting,Zhang Xinyi,Mou Yanping,Wu Caie,Fan Gongjian,Li Xiaojing,Zhou Dandan
This study optimized the enzymatic production of isomalto-oligosaccharides (IMOs) from ginkgo starch and evaluated their functional properties for food and prebiotic applications. Various liquefaction parameters were systematically optimized via response surface methodology to enhance ginkgo-derived IMO (G-IMO) synthesis. Optimal liquefaction conditions were determined as pH 6.0, 94 °C, 21% substrate concentration, 21 U/g α-amylase, and 29-min reaction time. G-IMO was purified using 24-h yeast fermentation, increasing the total content of four key functional components from 30.12 to 54.00%. Physicochemical analyses showed G-IMO had a smaller particle size and molecular weight than commercial IMOs, with comparable solubility, hygroscopicity, and water retention. Prebiotic activity assays confirmed G-IMO promoted probiotic growth similarly to commercial IMOs. This study demonstrates that ginkgo starch is a viable raw material for producing IMOs with functional properties equivalent to commercial products, offering an economical approach for food additive and prebiotic health product development.
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高影响因子
International Journal of Minerals Metallurgy and Materials
·
2025
·Vol. 32
·期 12
·3072-3085
·
IF 7.2
Zhang Qian,Liu Bo,An Changcong,Li Qiong,Liu Jiling,Wei Siyu,Fan Jiaxing,Sun Zhe,Zhang Dichuan,Pulatov Bakhtiyor
The effect of heavy metals on the properties and hydration of blast furnace slag–cement composites (BFS-CC) remain unclear. In this study, two BFS-CC (denoted as DBFS-CC and WBFS-CC) were prepared by dry and wet grinding of BFS, respectively. The effect of Cu(II) on BFS-CC’s properties and hydration was investigated by adding representative copper contaminants (CuO, CuCl 2 , and CuS) to the composites. Adding 1.0wt% CuO and 0.5wt% CuS increased the 3-d compressive strength of DBFS-CC by 14.9% and 5.7%, respectively, but suppressed the 3-d strength of WBFS-CC. This trend reversed at 28-d curing, where adding 1.5wt% CuO, 2.0wt% CuCl 2 , and 1.5wt% CuS enhanced the compressive strength of WBFS-CC by 23.4%, 6.2%, and 13.6%, respectively, but adversely affected the strength of DBFS-CC. For 28-d hydration, adding CuCl 2 decreased the hydration degree of DBFS-CC but enhanced that of WBFS-CC. Adding CuO promoted the hydration degree of both composites, while adding CuS exhibited inhibitory effects. DBFS-CC immobilized CuCl 2 better due to a higher hydration degree, while WBFS-CC immobilized CuO and CuS better due to having finer unhydrated BFS particles and a denser matrix. This study not only focuses on the Cu(II) immobilization effect but also reveals the differential effects of Cu(II) species on the hydration process, providing novel insights into heavy metal interactions in BFS-CC systems and their safe disposal.
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高影响因子
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
·
2025
·
IF 2
Chang Yingke,Zhao Wanjun,Liu Zhigang,Hou Jian,Bao Lijun,Chu Enyi,Nie Jianxin,Ren Wei,Bai Rui
In this study, boron (B) nanoparticles were incorporated into silicon (Si):copper oxide (CuO) thermites to address the challenges of high ignition temperatures and incomplete combustion in Si-based systems. The combustion characteristics were evaluated via employing pressure cell tests, laser ignition, calorimetry, and thermal analysis. Experimental results revealed that the optimal combustion characteristics were achieved by ternary thermites. The 70%B/30%Si: CuO thermites exhibited a peak pressure of 88.1 kPa/(g cm 3 ) and a pressurization rate of 41.8 kPa/(s g cm 3 ), representing increases of about fourfold and sixtyfold compared to the binary Si: CuO thermites. Additionally, the 50%B/50%Si: CuO thermites achieved a reaction completeness of 85.12%, nearly doubling the efficiency of the binary thermites. Thermal analysis revealed that these performance enhancements result from the incorporation of B, which burns to release high temperatures that melt the passivated silicon oxide layer over the silicon particles. This process reactivates the active Si, enabling it to participate in combustion. Therefore, the incorporation of B is an effective method for enhancing the energetic performance of Si: CuO thermites. This approach provides a strategic pathway for designing thermites with outstanding energetic behavior that are promising candidates for propulsion and pyrotechnic applications.
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高影响因子
Biomass Conversion and Biorefinery
·
2022
·
IF 4.05
Li Keying,Zhu Hengji,Zhao Yu,Yan Jingwei,Zhang Jiajian,Lin Xiuhua,Fan Liwei,Lu Zexiang
The solvent has an important impact on liquefaction conversion from biomass to efficiently obtain fuels and chemicals. In this paper, the catalytic liquefaction of woody biomass was studied using fir sawdust as raw material and concentrated sulfuric acid as catalyst in GVL/1-octanol mixed solvent with mechanical stirring and oil bath heating. The influence of GVL on liquefaction yield was discussed, and the liquefaction productions were characterized by some analysis methods to analyze the liquefaction mechanism. The results show that adding GVL benefits to improving liquefaction yield and generating high value-added monophenol because of the enhancement of the surface wettability of biomass and the inhibition of polymerization of mononuclear aromatics with other degradation products. The maximum liquefaction yield of 76.07% was obtained under the suitable conditions of fir sawdust 10 g, temperature 150 ℃, reaction time 60 min, mass ratio of sawdust/solvent 1:6, catalyst concentration 0.6 mol·L −1 , and mass ratio of GVL/1-octanol 4:6. The mechanism study reveals that aromatics originated by lignin degradation as well as small molecule ketones from cellulose and hemicellulose degradation. GVL/1-octanol as an eco-friendly solvent system exhibits a promising prospect of application in woody biomass conversion. Graphical abstract
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Frontiers of Chemical Science and Engineering
·
2024
·Vol. 18
·期 2
·1-10
·
IF 4.3
Zhao Yayun,Zhao Dechuan,Kong Chunlong,Lin Yichao,Wang Xuezhen,Chen Liang
Metal-organic framework/organosilica hybrid membranes on tubular ceramic substrates have shown great potential for the implementation of membrane technology in practical gas separation projects due to their higher permeance compared to commercial polymers. However, the selectivities of the reported membranes are moderate. Here, we have incorporated urea-modulated metal-organic frameworks into organosilica membranes to greatly enhance its separation performance. The urea-modulated metal-organic frameworks exhibit less-defined edges of crystallographic facets and high defect density. They can be well-dispersed in the organosilica layer, which substantially suppresses the interfacial defects between metal-organic frameworks and organosilica, which is beneficial for improving the selectivity of membranes for gas separation. The results have shown that the enhanced ideal selectivity of H 2 /CH 4 was 165 and that of CO 2 /CH 4 was 43, with H 2 permeance of about 1.25 × 10 −6 mol·m −2 ·s −1 ·Pa −1 and CO 2 permeance of 3.27 × 10 −7 mol·m −2 ·s −1 ·Pa −1 at 0.2 MPa and 25 °C. In conclusion, the high level of hybrid membranes can be used to separate H 2 (or CO 2 ) from the binary gas mixture H 2 /CH 4 (or CO 2 /CH 4 ), which is important for gas separation in practical applications. Moreover, the simple and feasible modulation of metal-organic framework is a promising strategy to tune different metal-organic frameworks for membranes according to the actual demands.
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高影响因子
Frontiers of Environmental Science & Engineering
·
2023
·Vol. 18
·期 2
·1-10
·
IF 6.4
Zou Kui,Liu Hongyuan,Feng Bo,Qing Taiping,Zhang Peng
In the sewage treatment process, facilitating the conversion of pollutants into value-added resources holds great potential for reducing the amount of greenhouse gas emissions and promoting economic circulation. Cyanophycin granule polypeptide (CGP), a recently discovered high value-added biopolymer present in activated sludge, has provided new avenues for the recovery of resources. However, the mechanisms that regulate CGP synthesis and the characteristics of this biopolymer in activated sludge remain unclear thus far. This study investigated the synthesis of CGP, polyhydroxyalkanoates (PHA), and alginate-like exopolysaccharides (ALE) in various microbial aggregates under different carbon sources feeding conditions. Our results showed that the CGP yields was superior that of PHA and ALE when subjected to identical carbon source feeding conditions. Furthermore, biofilm was more conducive to CGP accumulation than floc sludge. Compared with glucose and methanol, sodium acetate significantly enriched the CGP synthetase-encoding gene ( cphA abundance = ~17419), resulting in the highest CGP yield (average 107.1 mg/g MLSS) in both biofilm and floc sludge. This study is the first to reported the characteristic fluorescence of CGP (Ex/Em = ~360/450 nm) caused by the aggregated luminescence of arginine on the side chains. Overall, this study highlights the potential application of CGP as a fluorescent material and offers insights into CGP recovery from activated sludge in wastewater treatment plants.
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Frontiers of Environmental Science & Engineering
·
2020
·Vol. 15
·期 4
·1-10
·
IF 4.053
Liu Xuefeng,You Shijie,Ma Fang,Zhou Hao
Electrode fouling is a problem that commonly occurs during electro-oxidation water purification. This study focused on identifying the fouling behavior of Pt electrode associated with the formation of polymeric layer during electro-oxidation of phenol. The in situ electrochemical measurements and non-destructive observation of the electrode morphology were reported. The results demonstrated that the electrode fouling was highly dependent on thermodynamic process of electrode that was controlled by anode potential. At anode potential lower than 1.0 V vs SHE, the direct electro-oxidation caused the electrode fouling by the formation of polymeric film. The fouling layer decreased the electrochemically active surface area from 8.38 cm 2 to 1.57 cm 2 , indicated by the formation of polymeric film with thickness of 2.3 µm, increase in mass growing at a rate of 3.26 µg/cm/min. The degree to which the anode was fouled was independent of anion in the electrolyte. In comparison, at anode potential higher than 2.7 V vs SHE, the anions (e.g., chloride) could exert a major influence to the behavior of electrode fouling. The presence of chloride was shown to mitigate the fouling of electrode significantly through preventing the formation of polymeric film by active chlorine (e.g., Cl• and Cl 2 ) produced from anodic oxidation of chloride. Since chloride is the most abundant anionic species existing in both natural and engineered water system, this study not only offers a deep insight into the mechanism of electrode fouling, but also suggests strategies for anti-fouling in the presence of chloride in electro-oxidation process.
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高影响因子
Journal of Advanced Ceramics
·
2022
·Vol. 11
·期 3
·392-402
·
IF 11.534
Feng Chao,Zhou Xu,Tao Bingjing,Wu Haitao,Huang Shifeng
Dense microwave dielectric ceramics of Ce 2 [Zr 1 − x (Al 1/2 Ta 1/2 ) x ] 3 (MoO 4 ) 9 (CZMAT) ( x = 0.02–0.10) were prepared by the conventional solid-state route. The effects of (Al 1/2 Ta 1/2 ) 4+ on their microstructures, sintering behaviors, and microwave dielectric properties were systematically investigated. On the basis of the X-ray diffraction (XRD) results, all the samples were matched well with Pr 2 Zr 3 (MoO 4 ) 9 structures, which belonged to the space group \(R\bar 3c\) . The lattice parameters were obtained using the Rietveld refinement method. The correlations between the chemical bond parameters and microwave dielectric properties were calculated and analyzed by using the Phillips—Van Vechten—Levine (P—V—L) theory. Excellent dielectric properties of Ce 2 [Zr 0.94 (Al 1/2 Ta 1/2 ) 0.06 ] 3 (MoO 4 ) 9 with a relative permittivity ( ε r ) of 10.46, quality factor ( Q × f ) of 83,796 GHz, and temperature coefficient of resonant frequency ( τ f ) of −11.50 ppm/°C were achieved at 850 °C.
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高影响因子
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