RSC Advances
·
2020
·Vol. 10
·期 34
·20368-20373
·
IF 3.119
Fenying Wang,Baoping Ling,Qianjin Li,Rahma Abouhany
3-Aminopropyltriethoxysilane (APTES) is a silane widely used to supply amino groups for further modifications on various materials, but it is less studied as a catalyst to catalyze sol–gel silica polymerization. Here, by using APTES as the catalyst instead of the conventional basic catalysts, a novel strategy was developed to prepare silica-based molecularly imprinted polymers (MIPs). Meanwhile, APTES was employed as the functional monomer to create imprinted nanocavities for specific recognition of target molecules. The as-synthesized MIP exhibited ultra-high recognition capability due to the elimination of the detrimental effect on the imprinting performance caused by the additional catalysts. The preparation process, specificity, pH effect, binding capacity and affinity of the MIP were studied in detail. The MIP microparticles could be packed into a solid phase extraction column for removing the target molecule in water efficiently, and the molecule could easily be enriched by 40 times. The interaction of the functional monomer and template was studied by the calculation method, giving a more clear understanding of the recognition behaviours of the imprinted polymers. The strategy could be extended not only to prepare highly specific MIPs for other small phosphoric molecules, but also for biomolecules e.g. phosphorylated peptides or proteins.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Yanlin Pan,Dongliang Zheng,Jianxin Chen,Jun Zhou,Rui Wang,Xingyu Pan,Xiaobo Hu,Shaoqiang Chen,Pingxiong Yang,Jiahua Tao,Junhao Chu
The vapor transport deposition (VTD) processing is one of the most promising techniques to fabricate quasi-one-dimensional antimony selenosulfide (Sb 2 (S,Se) 3 ) photovoltaic materials with micrometer-scale grains and preferred crystal orientations . However, current researches rarely involve the effect of evaporation source on the film growth by VTD. Herein, we adopt Sb 2 (S,Se) 3 tablets as evaporation sources to develop Sb 2 (S,Se) 3 solar cells for the first time. We find that increasing the evaporation source area can effectively improve the deposition rate of Sb 2 (S,Se) 3 films, leading to an enhancement of the (221) preferred orientation and columnar large grains of the absorber layers, further improves the device photovoltaic performance . With fine-tuning of the evaporation source area, the optimized Sb 2 (S,Se) 3 solar cells show a high efficiency up to 7.6%. This study proposes a unique strategy to improving the quality of low-dimensional materials and a deeper understanding of the growth mechanism via vacuum methods.
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JOURNAL OF DAIRY SCIENCE
·
2022
·
IF 4.225
Shen Duan,Xin-Yao Wang,Xu Feng,Yue Ma,Zhong Zheng,Chao-Mei Ma
ABSTRACT Cynomorium songaricum is a traditional medicine and also a food material that is eaten raw or processed as tea or beverages. As a featured plant in semi-desert grasslands, C. songaricum is also eaten by the cattle and sheep in the area. This research study fed dairy sheep C. songaricum to determine the flavan-3-ols in sheep milk. Catechin (Cat), epicatechin (Epi), procyanidin A1 (A1), procyanidin A2 (A2), and procyanidin B1 (B1) were detected in sheep milk with the concentration being Epi > A2 > Cat > B1 > A1 at 24 h after the administration of C. songaricum . Neither A1 nor A2 were detected in the methanol extract of C. songaricum . Cysteine degradation of the plant revealed that in addition to Epi, A2 was the extending unit of the polymeric flavan-3-ols in C. songaricum , indicating that A2 is released digestively from the polymers and enters the milk. Procyanidin B-1 was converted to A1 on incubation in raw but not heated milk, indicating that the A1 in milk is the enzymatically transformed product of B1. Accelerated oxidation showed that the flavan-3-ols, B1, Cat, and Epi significantly protects the unsaturated triacyglycerols in the milk from oxidation. The flavan-3-ol could slow down the oxidation of glutathione and the latter may play an important role in preventing the milk triglycerides from oxidation. Flavan-3-ols are polyphenols with many health benefits. The present research revealed the antioxidant activities of flavan-3-ols that could be absorbed to sheep milk, adding new evidences for the values of these flavan-3-ols and for the milk.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 25
·1-8
·
IF 2.8
Hu Zhilong,Liu Hongbo,Tang Jian Guo,Lee Soo Wohn,Li Jun
NaNbO 3 (NN) has potential applications in energy storage devices due to its antiferroelectricity and environmentally friendly characteristics, but its low dielectric breakdown field strength ( E b ) and energy storage efficiency ( ƞ ) limit practical applications. In this study, the structure and electrical characteristics of NaNbO 3 were modulated by introducing Sr(Mg 1/3 Nb 2/3 )O 3 (SMN) to optimize its energy storage performance. The (1- x )NN- x SMN solid solution was synthesized using a classic solid-state reaction approach. According to X-ray diffraction analysis results, the prepared ceramics exhibit a pure phase when x is less than or equal to 0.15. With the increment of x , SMN disturbs the long-range polar order, induces pronounced relaxation ferroelectric phase (RFE) with reduced remnant polarization ( P r ), and enhances E b , leading to significant increases in recoverable energy storage density ( W rec ) and η . The optimized composition 0.875NN-0.125SMN has the best dielectric energy storage properties with a W rec of 1.28 J/cm 3 and an η of 88%.
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ChemSusChem
·
2022
·Vol. 15
·期 19
·e202201121
·
IF 9.14
Dong Yan,Shuhao Xiao,Xinyan Li,Rui Wu,Jinxia Jiang,Xiaobin Niu,Jun Song Chen
Graphical Balancing act : Boron-doped Na 3 V 2 (PO 4 ) 3 is synthesized through a facile electrospinning method. NVP@carbon with a balanced content of BCO 2 and BC 2 O exhibits the best sodium storage properties. BC 2 O mainly improves the sodium diffusion and BCO 2 enhances the structural stability. Na 3 V 2 (PO 4 ) 3 (NVP) is a widely studied cathode material for sodium-ion batteries because of its high ionic conductivity and attractive charge/discharge plateau (3.4 V vs. Na/Na + ). However, its poor electronic conductivity and severe volume expansion during sodium storage need to be addressed before its intensive application could be realized. Herein, boron-doped NVP was synthesized through a facile electrospinning method. By adding boric acid into the reaction mixture during electrospinning followed by carbonization, boron could be directly inserted into the carbon matrix, giving rise to B-doped carbon nanofiber wrapped NVP. By tuning the doping amount, the boron-containing configurations could be facilely manipulated, playing different roles in promoting the sodium storage properties of the composite. Based on the calculation results, BC 2 O enhanced sodium diffusion by lowering the energy barrier, while BCO 2 improved the structural stability. Due to these specific functionalities of the configurations, the as-prepared composite with a balanced amount of BC 2 O and BCO 2 demonstrated superior sodium storage capacity of 113 mAh g −1 at 1 C, outstanding long cycling performance of 103 mAh g −1 at 10 C, and retained 91 mAh g −1 after 1500 cycles. This gave rise to a capacity loss of only 0.08‰ per cycle, much better than the undoped counterpart.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Daoyan Feng,Hui Yang,Xingzhong Guo
3-Dimensional hierarchically porous ZnFe 2 O 4 /C composites with interconnected macropores and co-continuous hollow skeletons are facilely synthesized and used as anode materials for Li-ion batteries. The interconnected macropores impede the agglomeration of primary particles and buffer the volumetric variations, hollow mesoporous skeletons not only improve the interfacial contact area between electrode and electrolyte but also facilitate lithium ions transfer rate. Moreover, N-doped carbon layer further enhances the conductivity and mechanical strength of skeletons, as well as accelerates electron transfer during repeated discharge and charge process. The as-prepared 3-dimensional hierarchically porous ZnFe 2 O 4 /C composites possess excellent Li-ion storage properties, delivering a high reversible capacity of 972 mAh g −1 at 200 mA g −1 after 100 cycles and a decent specific capacity of 711 mAh g −1 even at a large current density of 1000 mA g −1 after 400 cycles. These values are among the highest reported for ZnFe 2 O 4 -based materials with different morphologies and nanostructures. The resultant ZnFe 2 O 4 /C composites display the potential practical application for high-performance Li-ion batteries.
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高影响因子
ADVANCED POWDER TECHNOLOGY
·
2020
·
IF 4.217
Weiwen Meng,Cong Li,Meng Yao,Zhangxing He,Xianwen Wu,Zhen Jiang,Lei Dai,Ling Wang
Aqueous lithium ion batteries (ALIBs) exhibit great application prospects in energy storage system, and the anode materials is the key to the extensive development of ALIBs. In this study, Li 1+x Ti 2−x Fe x (PO 4 ) 3 /C (x = 0, 0.05, 0.10, 0.30) composites as anode for ALIBs were synthesized via sol-gel method. The effect of Fe doping on LiTi 2 (PO 4 ) 3 /C properties was assessed by electrochemical measurements. In all of these composites, Li 1.1 Ti 1.9 Fe 0.1 (PO 4 ) 3 /C (LCF-10) presents the best electrochemical properties. LCF-10 exhibits discharge capacity with 120.0 and 80.2 mAh g −1 at 0.5 and 15C, severally, increasing by 1.2 and 1.3 times compared with the original LiTi 2 (PO 4 ) 3 /C. Besides, LCF-10 demonstrates remarkable cycling performance, whose discharge capacity retention can keep 70.2% at 5 C for 1000 cycles. Our study demonstrates that Fe doping for LiTi 2 (PO 4 ) 3 lattice can efficiently enhance electrochemical properties of LiTi 2 (PO 4 ) 3 /C composite.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Xiangchao Zhao,Yuansong Luo,Xiujian Zhao
NASICON-type solid electrolyte Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) has become an excellent substitute for organic liquid electrolytes due to its high ionic conductivity and exceptional air stability. However, its application is limited by its poor sintering characteristics and high grain boundary resistance. In this study, TeO 2 was introduced into LATP as a sintering aid to promote its sintering, and its properties were measured by XRD , SEM, XPS, EIS and dilatometry . The results show that the addition of TeO 2 can form eutectic liquid phase in LATP ceramic pellets during sintering, thus effectively promoting particle sintering. Not only the grain size was greatly increased, but also grain boundary and pore defects were reduced. With the help of TeO 2 , the performance of LATP is greatly improved when sintered at only 750 °C, the relative density and total ionic conductivity reached 90.64% and 0.207 mS/cm, respectively. The highest total ionic conductivity of 0.279 mS/cm and the highest relative density of 93.81% were obtained when sintered at 800 ℃ and 950 ℃, respectively. However, due to the volatilization of Li and Te at high temperature, the relative density and total ionic conductivity of LATP with TeO 2 added sintered at high temperature have only a small increase compared to that without addition. In conclusion, this study provides a feasible scheme for improving LATP performance.
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高影响因子
Advanced Electronic Materials
·
2018
·Vol. 5
·期 2
·1800683
·
IF 5.466
Weihuang Wang,Xiaomin Wang,Guilin Chen,Liquan Yao,Xiaojuan Huang,Tao Chen,Changfei Zhu,Shuiyuan Chen,Zhigao Huang,Yi Zhang
Antimony sulfide-selenide Sb 2 (S,Se) 3 as a promising absorber material has drawn extensive attention owing to its rewarding photoelectric properties, low toxicity, and earth abundant components. Here, an available and highly effective method, in situ hydrothermal growth accompanied with postselenization, is successfully applied to fabricate Sb 2 (S,Se) 3 solar cells. The rationale for the preparation of Sb 2 S 3 precursors by the hydrothermal method is discussed, and detailed characterization of Sb 2 (S,Se) 3 films selenized with different temperatures is also carried out. Finally, a solar cell with structure of FTO/CdS/Sb 2 (S,Se) 3 /Spiro-OMeTAD/Au is fabricated, which delivers an encouraging 6.14% efficiency with V oc of 732 mV, J sc of 14.6 mA cm −2 , and fill factor of 60.8%. This work provides valuable references for further development and improvement of Sb 2 (S,Se) 3 solar cells.
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高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2014
·Vol. 16
·期 36
·19206-19211
·
IF 4.198
Siliu Lv,Shuping Pang,Yuanyuan Zhou,Nitin P. Padture,Hao Hu,Li Wang,Xinhong Zhou,Huimin Zhu,Lixue Zhang,Changshui Huang,Guanglei Cui
Formamidinium (FA) lead triiodide perovskite with chlorine addition (NH2CHNH2PbI(3−x)Clx) is employed as a light harvester in mesoscopic solar cells for the first time. It is demonstrated that a phase-pure FAPbI(3−x)Clx perovskite layer can be synthesized using a one-step solution-process at 140 °C, and the resultant solar cells deliver a maximum power conversion efficiency of 7.51%, which is the most efficient formamidinium-lead-halide perovskite mesoscopic solar cell employing a polymer hole-transporting layer. The effects of the thermal annealing temperature on the quality/morphology of the perovskite layer and the solar cells performance are discussed. The advantages offered by the one-step solution-processing method and the reduced bandgap make FAPbI(3−x)Clx perovskites an attractive choice for future hybrid photovoltaics.
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高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Dongsheng Jiang,Yuzhe Li,Chao Zhang,Ruifang Wang,Jinpeng Zhu,Wen Chen,Yusi Che,Jilin He
Bayan Obo tailings are rich in niobium and other valuable elements; however, the phase evolution of niobium-bearing slag within these tailings remains poorly understood. This knowledge gap significantly impedes comprehensive utilization of these strategic resources. In this study, a CaO-SiO 2 -Nb 2 O 5 -5%Na 2 O-5%Al 2 O 3 -3%CaF 2 slag system was investigated to examine the phase equilibrium types, compositional characteristics, and distributional evolution under varying w (CaO)/ w (SiO 2 ) ratios and w (Nb 2 O 5 ) contents, using high-temperature equilibrium experiments. Following a 24-hour high-temperature equilibrium treatment at 1473 K under an argon atmosphere, a range of compounds including 13CaO·8SiO 2 ·Nb 2 O 5 ·CaF 2 , 2CaO·4SiO 2 ·Na 2 O·Al 2 O 3 , CaO·Nb 2 O 5 ·NaF, 2CaO·Nb 2 O 5 , and CaO·SiO 2 were identified. An increase in Nb 2 O 5 content coupled with a reduction in the w (CaO)/ w (SiO 2 ) ratio favored the formation of CaO·Nb 2 O 5 ·NaF (pyrochlore phase) and 2CaO·Nb 2 O 5 . These two phases exhibited high Nb concentrations, with the CaO·Nb 2 O 5 ·NaF (pyrochlore) phase containing up to approximately 70% Nb. The optimal smelting conditions for niobium enrichment in the pyrochlore phase were identified within the range of w (CaO)/ w (SiO 2 ) = 0.74∼0.80 and w (Nb 2 O 5 ) = 13.61%∼16.11%.
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JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Qianqian Zhao,Haiqi Jia,Wenxiong Shi,Shaolu Li,Xiaohui Yi,Siqi Yin,Genghao Gong,Yunxia Hu
Aromatic polyamide (PA) reverse osmosis (RO) membrane has gained widespread usage in desalination and water production. Nevertheless, their surfaces are prone to fouling during practical applications stemming from their inherent physicochemical properties. Therefore, conducting research on enhancing the antifouling properties of PA membranes through surface modification is of significant importance. In this work, high-flux and superior antifouling RO membranes were fabricated via surface grafting and self-crossing of [3-(2-aminoethyl) aminopropyl] triethoxysilane (AEAPTES) on the pristine PA membrane surface. Benefiting from solvent activation by n-hexane/n-decane and the strong hydrophilicity of AEAPTES, the modified membranes showed a significant enhancement in water permeance by approximately 73 % (reaching up to 4.10 LMH/bar) compared to unmodified PA membrane, while maintaining NaCl rejection above 98.67 %. Additionally, the modified membrane exhibited outstanding stability. Dynamic fouling experiments with charged model foulants of varying molecular sizes, supported by molecular dynamics simulation analysis, demonstrated that the surface charge plays a crucial role in resisting small-molecule foulants, while hydrophilicity is more effective against macromolecule foulants. Although AEAPTES incorporation did not improve the antifouling performance to negatively charged sodium dodecyl sulfate (SDS), it significantly improved resistance to positively charged dodecyl trimethyl ammonium bromide (DTAB) and charged protein model foulants, including lysozyme (LYZ) and bovine serum albumin (BSA). These improvements are attributed to the creation of a thick hydration layer, as well as the electrostatic interactions and steric hindrance effects provided by the AEAPTES modified layer. This research offers new perspectives on the antifouling mechanisms of PA membranes modified by organoalkoxysilane molecules.
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