Journal of Materials Chemistry A
·
2025
·
IF 9.5
Yingzhi Meng,Zhaojie Wang,Xiang Niu,Yuleng Jiang,Peng Nong,Silin Tang,Jiyang Xie,Wanbiao Hu,Dingyuan Wang,Biaolin Peng,Shengguo Lu,Laijun Liu
The development of high-performance electrocaloric effect (ECE) is of great importance for local refrigeration (such as chip and wearable electronics cooling, etc.). However, how to simultaneously achieving both a large ECE and a wide working temperature range near the room temperature are long-term challenges for lead-free ceramics. Herein, we report a novel lead-free ceramic with a high-performance ECE. Phase coexistence and optimized ferroelectric domain configuration and ultra-fine grains were constructed by {Nb 5+ , In 3+ } co-doping in B 0.9 Ca 0.1 TiO 3 ceramics near the room temperature. Ultimately, an ultrahigh ECE of 3.0 K and a wide working temperature range of 97 K are obtained near the room temperature in the composition (B 0.9 Ca 0.1 Ti 0.89 (Nb 0.5 In 0.5 ) 0.11 O 3 ). Furthermore, the origin of the high ECE performance was elucidated by the microstructures characterized using piezoresponse force microscopy (PFM) and atomic-resolution HAADF-STEM, and the dielectric and ferroelectric properties. This work provides an innovative approach for achieving high-performance ECE.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Wangyan Lv,Yingchao Yue,Ming Nie,Changchun Zhao,Jia Wei,Jianjun Cheng
Although Ti 3 C 2 T x exhibits promising potential for corrosion protection, its susceptibility to oxidation significantly limits the practical applications. In this study, 3-aminopropyl-triethoxysilane (APTES) was employed to covalently graft onto Ti 3 C 2 T x surface, thereby preserving its layered structural integrity. Based on density-functional-theory calculations, we systematically elucidated the interaction mechanisms between amino functional group and various surface terminations of Ti 3 C 2 T x at the electronic structure level. Experimental results demonstrate that as-prepared APTES@Ti 3 C 2 T x hybrid significantly enhances the anti-corrosion performance of the epoxy coating. Electrochemical tests revealed that after 30 days of immersion in a 3.5 wt.% NaCl solution, APTES@Ti 3 C 2 T x /EP composite coating maintained a high low-frequency impedance modulus (|Z| f=0.01 Hz ) of 10 7 Ω·cm², which was one order of magnitude higher than that of the pure epoxy coating. Furthermore, the wet adhesion strength of composite coating reached 4.82 MPa, representing a 145.9% improvement compared to the control group. This study not only confirms the effectiveness of the APTES encapsulation strategy in improving the stability of MXene but also provides a new approach for designing long-scale, superior corrosion-resistant composite coatings.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-14
·
IF 14.7
Wei Xinlei,Yang Xue,Hu Congcong,Li Qiangzi,Liu Qianqian,Wu Yue,Xie Leipeng,Ning Xiao,Li Fei,Cai Tao,Zhu Zhiguang,Zhang Yi-Heng P. Job,Zhang Yanfei,Chen Xuejun,You Chun
In vitro biotransformation (ivBT) facilitated by in vitro synthetic enzymatic biosystems (ivSEBs) has emerged as a highly promising biosynthetic platform. Several ivSEBs have been constructed to produce poly-3-hydroxybutyrate (PHB) via acetyl-coenzyme A (acetyl-CoA). However, some systems are hindered by their reliance on costly ATP, limiting their practicality. This study presents the design of an ATP-free ivSEB for one-pot PHB biosynthesis via acetyl-CoA utilizing starch-derived maltodextrin as the sole substrate. Stoichiometric analysis indicates this ivSEB can self-maintain NADP + /NADPH balance and achieve a theoretical molar yield of 133.3%. Leveraging simple one-pot reactions, our ivSEBs achieved a near-theoretical molar yield of 125.5%, the highest PHB titer (208.3 mM, approximately 17.9 g/L) and the fastest PHB production rate (9.4 mM/h, approximately 0.8 g/L/h) among all the reported ivSEBs to date, and demonstrated easy scalability. This study unveils the promising potential of ivBT for the industrial-scale production of PHB and other acetyl-CoA-derived chemicals from starch.
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NEW JOURNAL OF CHEMISTRY
·
2020
·Vol. 45
·期 2
·906-914
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IF 3.288
Hong-bo Huang,Cai-ling Liu,Yue Yang,Shao-hua Luo
A series of lanthanum-doped Na3V2−xLax(PO4)3/C (0 ≤ x ≤ 0.03) composites have been fabricated via a simple sol–gel approach. The influences of La3+ substitution on the structure, morphology and electrochemical properties are systematically studied. Rietveld refinement is applied to explore the actual substitution site of La, which proves that La3+ ions successfully occupy the octahedral V sites. It is suggested that appropriate La doping will reduce the particle size and enhance the reversible capacity and rate capability. Among all the samples, the as-prepared Na3V1.99La0.01(PO4)3/C compound shows the highest electrochemical capability. It delivers a high initial specific capacity of 111.3 mA h g−1 at 0.2C and maintains a capacity of 108.1 mA h g−1 over 100 cycles, exhibiting much better electrochemical performance than the original Na3V2(PO4)3/C. In addition, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) experiments suggest that low-level La doping can greatly decrease the polarization and increase electrical conductivity with fast reaction kinetics and a higher Na+ diffusion coefficient. The study presented here will provide considerable insights into rare earth element-doping tactics, which will facilitate the commercialization of sodium-ion batteries.
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JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
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2019
·Vol. 19
·期 12
·7840-7845
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IF 1.093
Cheng Zi-Qiang,Yu Ping,Shi Hai-Quan,Liu Zhi-Min,Cheng Guang-Ling,Cheng Hong-Bo,Liang Shan
In this study, In(OH)3 nanocrystals with three morphologies including rods, cubes and spheres were synthesized through a hydrothermal method. The morphology and crystalline were manipulated by controlling the growth speed and the addition of ascorbic acid. The InVO4
nanocrystals were obtained by a process sacrificing In(OH)3 templates. The phase transformation of rods and cubes generated size-controllable products, whereas that of nanospheres formed hollow micro-spheres. InVO4 nanocrystals display a brilliant yellow emission band
with the peak at 517 nm. Intriguingly, luminescent rare-earth Eu ions with red emission could be doped into InVO4 nanocrystals during the phase transformation. Excitation and the emission spectra indicated an excitation energy transfer from the vanadate to the rare-earth ions.
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FOOD AND CHEMICAL TOXICOLOGY
·
2014
·
IF 2.61
Chang Li,Shao-Ping Nie,Yong-qiang Zhou,Ming-Yong Xie
3-monochoropropane-1, 2-diol (3-MCPD) esters from edible oils are considered to be a possible risk factor for adverse effects in human. In the present study, the exposure assessment of 3-MCPD esters to Chinese population was performed. A total of 143 edible oil and fat samples collected from Chinese markets were determined for the concentrations of 3-MCPD esters. The concentration data together with the data of fats consumed were analyzed by the point evaluation and probabilistic assessment for the exposure assessment. The point evaluation showed that the mean daily intake (DI) of 3-MCPD esters were lower than the value of provisional maximum tolerable daily intake (PMTDI) of 3-MCPD (2 µg/kg BW/d). The mean DI values in different age groups obtained from probabilistic assessment were similar to the results of the point evaluation. However, in high percentiles (95th, 97.5th, 99th), the DI values in all age groups were undesirably higher than the value of PMTDI. Overall, the children and adolescents exposed more to 3-MCPD esters than the adults. Uncertainty was also analyzed for the exposure assessment. Decreasing the level of 3-MCPD esters in edible oils and consuming less oil were top priority to minimize the risk of 3-MCPD esters.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2015
·
IF 2.912
Xianchao Feng,Chenyi Li,Niamat Ullah,Robert M. Hackman,Lin Chen,Guanghong Zhou
The stability of cured meat products is increased by the protection of its proteins from oxidation by sodium nitrite (NaNO2) during processing. This study investigated the effects of NaNO2 (0, 50, 100, 200, and 400 mg/kg) on the physiochemical and structural characteristics of myofibrillar protein (MP) in raw and cooked ham. The NaNO2 showed a dose-dependent antioxidant effect, by inhibiting carbonyl formation, dityrosine formation, and denaturation of MP, and a nitrosative effect, through the formation of 3-Nitrotyrosine (3-NT). The 3-NT content within MP of raw ham had distinct negative correlations with sulfhydryl content and surface hydrophobicity. The 3-NT content within MP of cooked ham had significantly negative correlations with carbonyl, sulfhydryl content and turbidity and had significantly positive correlations with disulfide content. These results indicated that 3-NT may be a potential marker for protein oxidation in raw and cooked cured meat products.
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JOURNAL OF MOLECULAR LIQUIDS
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2021
·
IF 6.165
Yannan Du,Hongjun Zang,Yimo Feng,Kai Wang,Yaxin Lv,Zhipeng Liu
This paper briefs the emerging strategies for the designing of catalytic systems, which direct conversion of chitin biomass monomer N -acetyl- d -glucosamine (NAG) to 3-acetylamino-5-acetylfuran was studied systemically. Twelve catalysts were investigated, and pyrazine hydrochloride ([Pyz]Cl) ionic liquid exhibited the good performance-achieving 3A5AF with yields of 36.94% from NAG . Further adding boric acid and CaCl 2 , treating at 190 °C for 60 min, the conversion rate of NAG is 100%, and the yield of 3A5AF can be increased to 69.54% in DMA. Furthermore, functional group changes before and after the reaction have been characterized by FTIR, HPLC-MS and 13 C NMR were applied to monitor the reaction process with [Pyz]Cl as the catalyst. The reactive intermediate was clearly detected by these techniques. Accordingly, a possible reaction pathway was proposed. The results of this experiment provide a mild and efficient reaction route for the degradation of biomass, and enrich the theoretical research of quaternary amine catalysts in the conversion of biomass waste into high value-added chemicals.
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APPLIED SURFACE SCIENCE
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2010
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IF 1.616
Zhenglong Yang,Xujing Shi,Junjie Yuan,Hongting Pu,Yongsheng Liu
Poly(3-hexylthiophene) (P3HT)/graphene nanocomposites were facilely prepared via an in situ reduction of modified graphite oxide (mGO) in the presence of P3HT. The chemical and aggregated structures of the P3HT/mGO nanocomposites were successfully characterized by means of atomic force microscope (AFM), transmission electron microscope (TEM), photoluminescence (PL), Raman spectra , X-ray photoelectron spectroscopy (XPS) and UV–vis measurements. Coated by P3HT, reduced modified graphite oxide (re-mGO) could significantly improve their processing problem in common organic solvent . It was shown that P3HT chains were attached to re-mGO sheets closely and there existed the pi–pi interaction between P3HT and re-mGO. The P3HT/mGO nanocomposites exhibited good dispersion in chloroform and show high storage stability (>20 days). This finding provides an efficient method for fabricating a light energy conversion materials with new optical and electrical properties, combining excellent mechanics, heat-stabilization properties of graphene and excellent optical, electrical, processing and film forming properties of soluble polythiophene materials.
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MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 6
·1-16
·
IF 5.3
Li Guiyin,Guo Fei,Liang Jianlu,Wan Bingbing,Liang Jintao,Zhou Zhide
A new sandwich-type electrochemical biosensing platform was developed by gold @polyphthalenediamine nanohybrids (AuNP@PoPD) as the sensing platform and phosphorus doped reduced graphene oxide-hemin-palladium nanoparticles (PrGO-Hemin-PdNP) as the signal amplifier for phosphatidylinositol proteoglycan 3 (GPC3). AuNP@PoPD, co-electrodeposited into the screen printed electrode with high conductivity and stability, is dedicated to assembling the primary GPC3 aptamer (GPC3 Apt ). The second GPC3 Apt immobilized on the high conductivity and large surface area of PrGO-Hemin-PdNP was utilized as an electrochemical signal reporter by hemin oxidation (PrGO-Hemin-PdNP-GPC3 Apt ). In the range 0.001–10.0 ng/mL, the hemin oxidation current signal of the electrochemical aptasensor increased log-linearly with the concentration of GPC3, the lowest detection limit was 0.13 pg/mL, and the sensitivity was 2.073 μA/μM/cm 2 . The aptasensor exhibited good sensing performance in a human serum sample with the relative error of 4.31–8.07%. The sandwich sensor showed good selectivity and stability for detection GPC3 in human serum samples, providing a new efficient and sensitive method for detecting HCC markers. Graphical Abstract
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CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Yuanyuan Chen,Qian Zhou,Yue Zhou,Jinlan Huang,Renjie Niu,Jian Ming,Mingfu Wang
Oral delivery of natural antioxidants represents a promising therapeutic strategy for ulcerative colitis (UC), yet their therapeutic efficacy is hindered by instability and poor accumulation at inflamed sites. To address this, we developed Galectin-3 (Gal-3)-targeted nanoparticles (ZDP-NPs) by encapsulating diosmetin within zein complexes modified with a galactose- and rhamnogalacturonan-I (RG-I)-rich pectin (PMTP, Mw: 228.8 kDa, DM: 34.21 %, RG-I content: 43 %) extracted from Premna microphylla Turcz leaves. Surface plasmon resonance (SPR) analysis confirmed a strong binding affinity between PMTP and Gal-3 (KD = 2.83 μM). ZDP-NPs exhibited uniform spherical morphology (~170 nm), high drug loading (87.9 %) and colloidal stability. Under simulated gastrointestinal conditions, ZDP-NPs showed reduced Dio release (45.6 %) compared to PMTP-free nanoparticles (ZD-NPs, 75.6 %). In vitro studies showed that PMTP surface modification significantly enhanced nanoparticle uptake by LPS-induced macrophages via Gal-3-mediated endocytosis. In vivo colitis experiment of mice revealed that ZDP-NPs selectively accumulated in inflamed colons via Gal-3 targeting, prolonged retention, and significantly alleviated colonic damage by reducing oxidative stress, suppressing pro-inflammatory cytokines, and restoring epithelial barrier integrity. Biocompatibility assays confirmed minimal toxicity of ZDP-NPs. This study presented a food-derived pectin-based nanoplatform for precise colitis intervention through Gal-3 targeting, offering a multifaceted strategy to break the inflammation-oxidative stress cycle.
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CHEMISTRY-A EUROPEAN JOURNAL
·
2025
·Vol. 31
·期 12
·e202403915
·
IF 3.7
Qi Pan,Wanliang Yang,Chen Wu,Dongjia Xie,Yuan Wang
Graphical A ploy(1,3-dioxolane) (PDOL) layer was constructed by a Al(OTf) 3 -induced in-situ solidification process between the interface of LATP and anode/cathode. The as-prepared PDOL as an “interfacial adhesive” can fill the gap between the LATP and the electrode, providing a better interfacial contact and reduced interfacial impedance. Such interfacial adhesive layer not only effectively prevents Li metal from reducing LATP but also provides intimate interface contact and limits unnecessary electron transport. Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) as the solid-electrolyte has attracted much attention for Li-ion batteries. However, the unstable LATP/Li interface and the insufficient contact between the anode/cathode and LATP usually lead to the structural collapse of LATP and the large solid–solid interfacial resistance for Li+ transport. Herein, a poly(1,3-dioxolane) (PDOL) adhesive layer was constructed by a Al(OTf) 3 -induced in-situ solidification process between the interface of LATP and anode/cathode. Such PDOL interfacial adhesive layer alleviates adverse reduction reactions at the LATP/Li interface and provides stable and well-contacted bilateral electrode interfaces. Benefitting from the PDOL interfacial adhesive, the Li|adhesive-LATP|Li symmetric cells achieve a current density up to 0.7 mA cm −2 and exhibit a good cycling stability for more than 2750 h at 0.1 mA cm −2 , and the Li|adhesive-LATP|LiFePO4 solid-state batteries with interface modification exhibit a capacity of 158 mAh g −1 at 0.2 C with a retention of 94 % after 100 cycles.
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