Journal of the American Chemical Society
·
2020
·
IF 14.612
Zhong-Xia Wang,Hua Zhang,Fang Wang,Hao Cheng,Wen-Hui He,Yu-Hua Liu,Xue-Qin Huang,Peng-Fei Li
Piezoelectric materials with inherent mechanical–electric coupling effect are a crucial family of functional materials in high-end information technology. For practical applications, the transverse piezoelectric performance (d31 or d32) is mainly considered, because this parameter is a vitally important index to characterize the performance of piezoelectric thin films. However, the transverse piezoelectricity of the thin films as a key figure of merit is seldom mentioned in molecular ferroelectrics. Herein, we report that a new 1D halide perovskite ferroelectric N,N-dimethylallylammoniumCdCl3 (DMAACdCl3) exhibits an above room-temperature ferroelectric phase transition with a saturated polarization of 1.9 μC cm–2 and a coercive field of 5.0 kV cm–1. The thin film of DMAACdCl3 is successfully fabricated using an easy processing spinning method and maintains well ferroelectric properties verified by piezoresponse force microscopy (PFM). More significantly, the ferroelectric thin film offers superior transverse piezoelectricity with an in-plane piezoelectric response of about 41 pC N–1, which is about twice that of well-known piezoelectric polymer PVDF (21 pC N–1). Transverse piezoelectricity has been scarcely studied in molecular ferroelectrics, and its exploitation would play an important role in the design of next-generation smart piezoelectric devices.
研究领域:
材料科学
·
凝聚态物理
·
应用物理
·
纳米技术
·
铁电学
·
薄膜技术
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DOI
高影响因子
Journal of Physical Chemistry Letters
·
2024
·
IF 4.8
Wenfeng Sun,Shaolong Liu,Caizheng Wang,Xiaotao Zu,Sean Li,Xia Xiang
Lead-free perovskites are considered to be candidates for next-generation photodetectors, because of their excellent charge carrier transport properties and low toxicity. However, their application in integrated circuits is hindered by their inadequate performance and size restrictions. To aim at the development of lead-free perovskite-integrated optoelectronic devices, a CsAg2I3/silicon (CAI/Si) heterojunction is presented in this work by using a spatial confinement growth method, where the in-plane growth of CAI microbelts with high-quality single-crystal characteristics is primarily dependent on the concentration of surrounding precursor solution. The fabricated photodetectors based on the CAI/Si heterojunctions exhibit a broad-spectrum detection capability in the ultraviolet–visible–near-infrared (UV-vis-NIR) range. In addition, the photodetectors show good photoelectric detection performance, including a maximum responsivity of 48.5 mA/W and detectivity of 1.13 × 1011 Jones, respectively. Besides, the photodetectors have a rapid response of 6.5/224 μs and good air stability for over 2 months. This work contributes a new idea to design next-generation optoelectronic devices with high integration density.
研究领域:
材料科学
·
光电子学
·
半导体器件
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纳米技术
·
光电探测
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DOI
高影响因子
Journal of Macromolecular Science Part B-Physics
·
2020
·
IF 0.911
Hailin Xie,Zhihua Zhou,Wenjuan Liu,Yanmin Zhao,Tianlong Huang,Ping Chen,Ziwei Zhou,Dan Wang,Jianglong Duan,Jianjun Fang
Polymeric/ceramic composite scaffolds that are biocompatible and biodegradable are widely used for tissue engineering applications. In this work a series of poly(L-lactide-co-glycolide-co-ε-caprolactone)/nano-biaoactive glass-nano-β-tricalcium phosphate composite scaffolds were successfully fabricated and the influences of the inorganic content and freezing temperature on the physical properties were studied. The composite scaffolds with various inorganic contents showed an interconnected pore structure with irregular shapes. The composite scaffolds had a porosity that was reduced with increasing inorganic content and decreasing freezing temperature. The incorporation of inorganic fillers and decreasing freezing temperature improved the mechanical properties of the hybrid scaffolds. By appropriate control of these two factors (10.0 wt% content of NBAG and β-TCP with freezing at −30 °C) a suitable composite scaffold was prepared as a potential bone tissue engineering implant.
研究领域:
生物材料
·
组织工程
·
高分子科学
·
陶瓷材料
·
材料科学
·
纳米技术
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DOI
高影响因子
Journal of Energy Chemistry
·
2020
·
IF 7.216
Aili Wang,Zhiyuan Cao,Jianwei Wang,Shurong Wang,Chengbo Li,Nuo Li,Lisha Xie,Yong Xiang,Tingshuai Li,Xiaobin Niu,Liming Ding,Feng Hao
Nickel oxide (NiO x ) has exhibited great potential as an inorganic hole transport layer (HTL) in perovskite solar cells (PSCs) due to its wide optical bandgap and superior stability. In this study, we have modulated the Ni 2+ vacancies in NiO x film by controlling deposition temperature in a hot-casting process, resulting the change of coordination structure and charge state of NiO x . Moreover, the change of the HOMO level of NiO x makes it more compatible with perovskite to decrease energy losses and enhance hole carrier injection efficiency . Besides, the defect modulation in the electronic structure of NiO x is beneficial for increasing the electrical conductivity and mobility, which are considered to achieve the balance of charge carrier transport and avoid charge accumulation at the interface between perovskite and HTL effectively. Both experimental analyses and theoretical calculations reveal the increase of nickel vacancy defects change the electronic structure of NiO x by increasing the ratio of Ni 3+ /Ni 2+ and improving the p-type characteristics. Accordingly, an optimal deposition temperature at 120 °C enabled a 36.24% improvement in the power conversion efficiency compared to that deposited at room temperature (25 °C). Therefore, this work provides a facile method to manipulate the electronic structure of NiO x to improve the charge carrier transport and photovoltaic performance of related PSCs.
研究领域:
材料科学
·
纳米技术
·
能源技术
·
固体物理
·
光伏技术
·
薄膜技术
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DOI
高影响因子
Journal of Macromolecular Science Part B-Physics
·
2022
·
IF 1.366
Meimei Guo,Zhihua Zhou,Wenjuan Liu,Tianlong Huang,Wei Wu,Jianglong Duan,Meiling Yi,Chao Zhang,Xiao He,Jinxing Chen,Jiaming Gu,Jianjun Fang
Polymer/bioceramic composite scaffolds have gained importance in treating bone defects. In this paper we described a novel degradable scaffold material for bone tissue repairing prepared by combining poly(lactide-co-glycolide-co-ε-caprolactone) (PLLGC) and 1,4-butanediamine-modified poly(lactide-co-glycolide) (BMPLGA) with nano-biaoactive glass (NBAG) and nano β-tricalcium phosphate (β-TCP). The composite scaffolds were characterized by using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. The FTIR results indicated that the inorganic fillers of NBAG and β-TCP were successfully incorporated into the PLLGC/BMPLGA matrix. The influences of the inorganic filler content and freezing temperature on the porosity and compressive strength of the composite scaffolds were studied. The composite scaffolds showed an interconnected pore structure with the pore size ranging from 20 to 100 μm depending on the freezing temperature and the inorganic fillers. The compressive strength was enhanced with increasing content of the inorganic fillers and the freezing temperature; however, the porosity decreased. We suggest the PLLGC-BMPLGA/NBAG-β-TCP composite scaffolds have great potential for application in bone tissue regeneration.
研究领域:
生物材料
·
组织工程
·
高分子科学
·
生物医学工程
·
材料表征
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DOI
高影响因子
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
·
2020
·
IF 1.701
Chen Li,Lijie Wang,Hong Xu,Jinxiang Dong
Sodium oxalate is a detergent builder candidate due to its good performance in detergent formulations. However, sodium oxalate softens water by forming precipitates, thus preventing calcium oxalates from depositing on fabrics is a key goal for sodium oxalate-based detergents. Surfactants and builders are two main ingredients in detergents. Here, six anionic surfactants were chosen to study their deposition effects on cotton fabric during washing. Ash deposition analysis was used to evaluate the amount of calcium oxalate deposition on cotton fabric. X-ray diffractometer and scan electron microscope were performed to the study crystal phase and morphological changes of calcium oxalates in the presence of the different anionic surfactants, and the total interaction energy between calcium oxalates and cotton fabric was calculated by Derjaguin–Landau–Verwey–Overbeek (DLVO) theory in each case. The results showed that different anionic surfactants have a different effect on the ash deposition, primarily that the concentration of surfactants had less influence on the deposition with the exceptions of sodium dodecyl benzene sulfonates (SDBS) and sodium methyl ester sulfonates (MES). Anionic surfactants can influence both phase and morphology of calcium oxalates, which might influence the zeta potential of the calcium oxalates. When the calcium oxalates are of the same phase, the deposition amount decreased with increasing maximum total interaction energy (VTmax). The greatest decrease in calcium oxalates deposition occurred in the presence of sodium alkyl ether sulfates (AES) and disodium lauryl sulfosuccinates (AEMES), of which VTmax is the largest.
研究领域:
材料科学
·
纺织化学
·
表面化学
·
胶体与界面科学
·
化学工程
·
分析化学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Lihan Liu,Yuhan Guo,Yuxin Wang,Senjian Han,Lina Xu,Zengyu Ma,Shiqiang Wang,Tianlong Deng,Zhenyu Liao
Zinc ferrocyanide (ZnFC) composites exhibit high selectivity for cesium, but conventional bulk forms suffer from slow mass transfer. In this work, ZnFC was anchored onto exfoliated α-phosphazene ( E -ZrP) nanosheets via an in-situ growth method to construct ZnFC@ E -ZrP composites, which were further fabricated into ZnFC@E-ZrP/PSf adsorption membranes. The two-dimensional E-ZrP support inhibited ZnFC agglomeration and enhanced Cs + mass transfer through shortened diffusion paths and a surface P–OH-induced electronegative field. Experimental results indicated that ZnFC@ E -ZrP exhibited Cs + adsorption properties significantly surpassing that of the α-ZrP support, along with good acid-base stability and recyclability. The corresponding membrane combined rapid transport from E -ZrP with precise capture from ZnFC, achieving adsorption equilibrium within 5 min in filtration and maintaining >98% Cs + recovery from geothermal brine under high ionic competition. The strategy demonstrated in this work enables the design of efficient materials for rapid cesium separation.
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Yahui Feng,Jiajun Xu,Jie Xu,Li Gao,Bingxin Liu,Chao Zhang,Shiai Xu,Yunhua Lu
Mineral carbonation into Anhydrous Magnesium Carbonate (AMC) is a promising pathway for permanent CO₂ storage, yet the strong hydration of Mg 2+ hinders its precipitation under mild conditions. To overcome this limitation, organic acids ( l -ascorbic acid (LA), citric acid (CA), malic acid (MA), and tartaric acid (TA)) are employed as dual-functional agents: carbon sources and hydration disruptors. Through combined density functional theory (DFT) calculations and experimental validation, it is revealed that organic acids weaken the hydration shell of [Mg(H₂O)₆] 2+ by forming stable coordination bonds with Mg 2+ , significantly reducing the dehydration energy barrier (e.g., ΔG ‡ ₆-₅ decreased from 180.53 kJ/mol in H₂O to 76.71 kJ/mol for LA). Systematic hydrothermal synthesis demonstrates that LA enables high-purity AMC formation at 450 K, the widest temperature window among the tested acids. At the same time, TA requires ≥525 K. Crucially, each acid directs distinct AMC morphologies, hydrangea-like (LA), cubic (CA), layered (MA), and block-like (TA), attributed to site-specific adsorption on crystal surfaces. This work provides a molecular-level blueprint for overcoming the dehydration barrier in AMC synthesis and advances strategies for accelerating sustainable CO₂ mineralization.
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产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Muneerah Alomar,Lamia Abu El Maati,Muhammad Sultan Irshad,Naila Arshad,Afraa Alotaibi,Van-Duong Dao
The fabrication of sustainable solar-powered interfacial evaporators is essential for addressing global water scarcity challenges. Herein, we propose a new photothermal evaporator by applying a zirconium carbide-polypyrrole (ZrC-PPy) composite coating to a cellulose filter (CF) possessing enhanced photothermal conversion. The 3D photothermal evaporator is constructed by integrating a ZrC-PPy@CF evaporator onto triangular polyurethane (PU) foam. With a poor thermal conductivity of 0.078 W m −2 K −1 , the synthesized evaporator allowed effective heat localization under light. The evaporator produced an evaporation rate of 1.92 kg m −2 h −1 with a corresponding photothermal conversion efficiency of 89%. Additionally, the evaporator achieved over 99.9% rejection of common metal ions (Na + , K + , Ca 2+ , Mg 2+ ) from saline water, yielding high-quality freshwater. These findings highlight the ZrC-PPy@CF evaporator as a scalable and versatile platform for efficient wastewater treatment and desalination.
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产品关联
DOI
高影响因子
RARE METALS
·
2026
·Vol. 45
·期 4
·e70231
·
IF 12.1
Xiangjie Duan,Jie Zhao,Zhipeng Li,Shuaida Song,Na Zhou,Xingyi He,Jizhuang Fan,Ping Xu,Bo Tian,Yunchen Du
en Lightweight and lead-free radiation shielding materials remain urgently needed. This work designed a fluorite high-entropy oxide (FHEO) system through a combined computational–experimental route. Density functional theory based on special quasi-random structures was used to identify thermodynamically stable fluorites from a wide compositional space. Their γ-ray attenuation potential in polypropylene (PP) composites was then evaluated, and the best candidates were selected for ultrafast Joule-heating synthesis. Guided by this workflow, LaSm-1000/PP composite showed broad-spectrum shielding performance and surpassed PbO/PP at identical loadings. Its linear attenuation coefficients were 5.67, 0.48, 0.38, and 0.34 cm −1 at 59.5, 662, 1173, and 1332 keV, respectively. X-ray photoelectron spectroscopy and projected density of states revealed an electron density–oxygen defect synergy in optimized FHEO. Lattice distortion and uniform cation distribution suppressed oxygen defects, stabilized Bi 3+ and W 6+ , and broadened O 2p states. These electronic features enhanced photoelectric absorption at low energies and promoted Compton scattering at medium and high energies. The proposed design route provides an efficient and scalable strategy for next-generation lead-free radiation shielding materials. 摘要 zh 轻质、无铅的辐射屏蔽材料仍具有迫切的应用需求。本研究通过计算模拟与实验相结合的策略 , 设计了一系列萤石结构高熵氧化物 ( FHEOs ) 。基于特殊准随机结构的密度泛函理论计算 , 从十种成分中筛选出具有热力学稳定性的萤石型高熵氧化物 , 并通过蒙特卡洛模拟进一步评估其在聚丙烯 ( PP ) 复合材料中的γ射线衰减潜力 , 选取最优组分进行超快焦耳加热合成。在该设计流程指导下制备的LaSm-1000/PP复合材料表现出优异的宽能区辐射屏蔽性能 , 相同填料含量的性能优于PbO/PP体系。在59.5、662、1173和1332 keV能量下的线性衰减系数分别为5.67、0.48、0.38和0.34 cm −1 。X射线光电子能谱与投影态密度分析表明 , FHEOs体系中存在显著的电子密度–氧缺陷协同效应。晶格畸变与均匀的阳离子分布有效抑制了氧缺陷的形成 , 稳定了Bi 3+ 和W 6+ 的高价态 , 并拓宽了O 2p能带结构。这种电子结构特征在低能区增强了光电吸收过程 , 在中高能区促进了康普顿散射行为 , 从而实现了宽能谱γ射线的高效衰减。本研究提出的计算–模拟–实验一体化设计路线 , 为新一代无铅辐射屏蔽材料的高效开发与规模化制备提供了一种可行且具有推广价值的策略。
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产品关联
DOI
高影响因子
Chemosensors
·
2026
·Vol. 14
·期 3
·
IF 4.4
Yiyuan Zhang,Chen Zhou,Jiaxin Li,Evgeny Kovtunets
A novel acridine-based fluorescent sensor (Sensor ANT) for the highly selective and sensitive detection of cyanide ions (CN−) was rationally designed and synthesized via the conjugation reaction of acridine-9-amine with 3-nitrophenyl isothiocyanate. The sensing mechanism is triggered by the specific interaction between exogenous CN−and the hydrogen-bonding moieties within the sensor’s molecular framework, which induces a distinct fluorescence quenching response. Systematic titration experiments confirmed that Sensor ANT exhibits rapid response kinetics, excellent selectivity, and reliable qualitative/quantitative detection capabilities toward CN−. Complementary biocompatibility assays, including in vitro cellular imaging and in vivo zebrafish experiments, further verified the promising application potential of this sensor in practical and biological detection scenarios. The detection limit (DL) of Sensor ANT for CN−was calculated to be 2.89 × 10−7M, with a 1:1 binding stoichiometry and a binding constant of 1.95 × 104M−1. These findings demonstrate that Sensor ANT represents a robust candidate for CN−detection in environmental and biological systems.
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产品关联
DOI
高影响因子
Frontiers in Nutrition
·
2022
·
IF 6.59
Xie Minhao,Zhang Xianzhu,Wang Xiaoxiao,Chen Guijie,Liu Jianhui,Zeng Xiaoxiong,Yang Wenjian
Dietary non-starch polysaccharides and phenolics are usually ingested at the same time. They are both regarded as prebiotics, and they regulate the intestinal microbiota through various mechanisms. Notably, however, reports of their combined or synergistic effects are rare. Arabinoxylan (AX), a polysaccharide, and chlorogenic acid (CA), a polyphenol, are widely consumed, and their effects on the microbiota have previously been discussed. In the present study, they were given to dextran sulfate sodium (DSS)–treated mice, separately and together, and the intestinal microbiota were investigated by high-throughput sequencing. The data showed that CA attenuated body weight loss, colon shortening, and histological damage in DSS-treated mice, while neither AX nor the AX+CA combination exhibited any ameliorating potential. AX+CA had less of a modulating effect on intestinal microbiota profiles than did CA. AX+CA administration increased the relative abundance of Flavonifractor, Coprobacillus, and Clostridium_XlVa, and decreased the abundance of Robinsoniella and Lactobacillus. Compared to AX and CA, AX+CA contributed to a more complicated shift in the biological functions of the intestinal microbiotaAX seemed to weaken the beneficial effects of CA, at least in the present experimental model of DSS-induced colitis. The combined effects and mechanisms of dietary polysaccharides and phenolic compounds on the intestinal microbiota and on overall health still need to be further investigated.
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产品关联
DOI
PubMed
高影响因子
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