JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 29
·e52649
·
IF 3.057
Chen Gao,Junbo Jiang,Juan Wang,Yutong Wang,Yangyang Zhang,Caihua Rao,Yue Cheng,Zhongrong Chen,Runhuai Yang,Gang Zhao
Mineralization of hydroxyapatite mineralized by acidic metal oxides has attracted substantial research interest in the research and development of orthopedic substitutes. In this study, Polycaprolactone (PCL) nanofibers with nano-tantalum oxide (Ta 2 O 5 ) were successfully fabricated through electrospinning. The scaffold simulates the mineralization process of hydroxyapatite in simulated body fluid. However, in the process of mineralization, there is a chemical reaction between hydrophobic scaffolds and acid oxides, which is believed to have a significant impact on the biological effects of the scaffolds. The results of SEM, EDS, XRD, Mapping, FTIR, GPC, 13 CNMR, and 1 HNMR explain the principle of hydroxyapatite mineralization by Ta 2 O 5 and the reason why the composite scaffold is blurred, that is, the carbonyl carbon of PCL attacked by the surface hydroxyl groups of Ta 2 O 5 to catalyze its ring-opening polymerization to synthesize PCL/Ta 2 O 5 nanocomposites in one step. In order to accurately explore the effect of this reaction on the metabolism of biological macromolecules in the future, we provide a detailed route of Ag Nanoparticles -Dimercaptosuccinic acid@Transcription activator (AgNPs-DMSA@TAT) probe synthesis. The results provide a reference for the sedimentation of hydroxyapatite induced by acid oxides and its effect on traditional electrospun fiber scaffolds.
研究领域:
材料科学
·
生物材料
·
骨科
·
生物医学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2023
·
IF 3.8
Xiyue Wang,Shang Gao,Junfu Wang,Xinying Fan,Chi Song,Chuanwei Zhou,Shuyun Shi,Dandan Wang,Hongji Li
In this work, a novel sensor for selective detection of 2,6-dichlorophenol (2,6-DCP) is developed by combining the selectivity of molecular imprinting technology (MIPs) with the sensitivity of SERS technology. In order to enhance SERS activity of the substrate, Ag nanoparticles are loaded on Ta 2 O 5 particles by means of photodeposition. The synthesized Ta 2 O 5 @Ag is combined with MIL-101 (Fe) to enrich more target molecules and reduce the limit of detection. Finally, Ta 2 O 5 /Ag/MIL-101(Fe)@MIPs (TAM@MIPs) is synthesized by precipitation polymerization for selective detection of 2,6-DCP. When the concentration of 2,6-DCP changes between the range of 10 −2 ∼ 10 −9 M, the Raman intensity and concentration present a good linear relationship. The correlation coefficient (R 2 ) is 0.9969 and the limit of detection (LOD) of 2,6-DCP is 10 −9 M. Furthermore, Under UV-irradiation, the TAM@MIPs also presents photocatalytic performance, which can effectively degrade the organic interfering molecule adsorbed on its surface and present high-efficiency reproducibility. This method broadens the application field of SERS detection and provides a new procedure for the phenolic pollutant detection.
研究领域:
分析化学
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 47
·21909-21929
·
IF 3.5
Zhang Hao,Wang Youqiang,Duan Jizhou
High-entropy alloy (HEA) coatings can impart high strength, hardness, and corrosion resistance, enhancing the service life of the alloy. This opens up a new path for HEA in practical applications. This research focuses on HEA composite coatings made up of AlCrCoFeNi/x Ta 2 O 5 (x = 2, 6, 10, 20 (wt%)) fabricated through the metal 3D printing technique for cladding. A comprehensive investigation was conducted on the morphology, microstructure, electrochemical corrosion, hardness, and dry wear properties of coatings doped with varying contents of Ta 2 O 5 particles. This was achieved through including optical microscopy, laser confocal microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The results demonstrated that the prepared coatings exhibited a relatively flat surface without any discernible defects, such as cracks or porosity. The surface of the coating consists of three distinct regions: flat zones, splash particle zones, and overlapping joint zones. The overall morphology is characterized by a rough texture. The surface quality of the coating is optimized when the Ta₂O₅ content is 10%. The coating predominantly comprises face-centered cubic and body-centered cubic (BCC) phases. With an increase in the doping content of Ta₂O₅ particles, the BCC phase and the coating’s hardness also increase. Furthermore, the passivation film on the surface of the coating is predominantly composed of Al, Cr, Fe, Co, Ni, and Ta oxides, exhibiting exceptional stability. The doped of 10 wt% Ta₂O₅ to the coating resulted in excellent corrosion and wear resistance. The highest E corr value was − 0.65 V, the lowest I corr value was 7.63 × 10 –6 A/cm 2 , and the largest R p value was 4693 Ω/cm 2 . Additionally, the coating exhibited the highest surface hardness of the coating exhibited a hardness of 585.58 HV, a wear rate of 6.519 × 10 –2 mm 3 N −1 mm −1 , and a minimal wear volume of 19.01 mm 3 . These characteristics are illustrative of the coating’s performance. Graphical abstract
研究领域:
材料科学
·
表面工程
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2023
·Vol. 52
·期 4
·2614-2625
·
IF 2.1
Jiang Xi,Zhang Yun,Ding Shihua,Song Tianxiu,Hou Zhengpeng,Xiao Junwen,Wang Yarong
MO-ZrO 2 -Ta 2 O 5 (M = Zn, Co) ceramics were prepared by solid-phase reaction method. Thermo-gravimetric-differential thermal behavior, crystal structure, and microwave dielectric properties of ZnO-ZrO 2 -Ta 2 O 5 and CoO-ZrO 2 -Ta 2 O 5 ceramics were compared in this paper. Both of them exhibited monoclinic wolframite structure. Densest microstructures with uniform grains were obtained at 1400°C and 1425°C in the cases of M = Zn and Co, respectively. ZnO-ZrO 2 -Ta 2 O 5 and CoO-ZrO 2 -Ta 2 O 5 exhibited comparable ε r ~ 20.26 and 24.30, while the former had Q × f ~ 60, 983 GHz and the latter had Q × f ~ 95,300 GHz. The grain growth exponent and activation energy obtained from the phenomenological kinetic equation indicated the growth process of ceramics. The grain growth of Zn-based ceramic was dominated by interfacial reactions and lattice diffusion. For the other one, the grain growth mechanisms were grain boundary diffusion and lattice diffusion at high temperatures. The grain growth progress of them both affected by lattice diffusion. The growth process of ZnO-ZrO 2 -Ta 2 O 5 ceramics was faster than that of CoO-ZrO 2 -Ta 2 O 5 ceramic. However, the grains were overgrown and grew slowly at 1425°C and 1450°C, which was caused by the excessive high temperature.
研究领域:
材料科学
·
陶瓷
·
微波技术
·
固体物理
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Yaqiao Liu,Shuozhen Hu,Zhaoqun Gao,Xinsheng Zhang,Shigang Sun
Photoelectrochemical (PEC) water oxidation is considered to be a promising approach to converting solar energy into clean chemical fuels. α-Fe2O3 is a potential photoanode material for water oxidation with a high theoretical photocurrent density (12.6 mA cm–2) driven by visible light. Constructing α-Fe2O3-based heterojunction with other semiconductors is a promising strategy to improve the actual photoelectrocatalytic activity. In this work, nitrogen-doped Ta2O5 is introduced to synthesize N-Ta2O5-h@α-Fe2O3 nanorod heterojunction with different band structures. At the interface, electrons transfer from N-Ta2O5-h to α-Fe2O3, which forms a built-in electric field. The heterojunction structure contributes to inhibiting the severe recombination of photogenerated electron–hole pairs. By controlling the duration of mild heat treatment, the N-Ta2O5-h nanorods with different Fermi energy levels and contents of oxygen vacancies are obtained. A mild heat treatment in N2 is proved to enlarge the ΔE by leveling up the Fermi level and to promote the content of oxygen vacancies for the N-Ta2O5-h@α-Fe2O3 heterojunction as the heat-treatment time increases. The PEC water oxidation performance of the N-Ta2O5-h@α-Fe2O3 heterojunction increases when the mild-heat-treatment time is 2 h and decreases for 6 h treatment. Eventually, N-Ta2O5-2@α-Fe2O3 exhibits an enhanced photocurrent density of 3.10 mA cm–2 (4.4 times higher than that of bare α-Fe2O3), an efficiently boosted charge separation (2.0 times higher than bare α-Fe2O3), and a high chemical stability after a long-term test.
研究领域:
光电化学
·
材料科学
·
能量转换
·
催化
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
·
2022
·
IF 4.458
Yichen Ye,Yongbao Xiao,Yao Ji,Weichao Wang
Tellurite-based glass composed of TeO 2 -Ta 2 O 5 -ZnO (labeled as TTZ) is explored as the host material for a potential 2.7 μm fiber laser. It is found that the glass-forming region, structural and physical properties of TTZ glass undergo considerable changes when platinum crucible are adopted to prepare glass instead of alumina one. Especially, the Er 3+ -doped TTZ glass that melted in platinum crucible exhibits relatively larger absorption and emission cross-sections at 2.7 μm than that of alumina one. Further studies show that an enhanced 2.7 μm luminescence can be achieved from the heavily Er 3+ -doped TTZ glass, the absorption and emission cross-sections, figure of merit and maximum gain coefficient of Er 3+ -doped TTZ-Pt glasses at 2.7 μm are calculated to be 0.91 × 10 −20 and 1.01 × 10 −20 cm 2 , 3.18 × 10 −24 cm 2 ·s and 2.25 cm −1 , respectively, indicating that the Er 3+ -doped TTZ glass may be a promising candidate host for mid-infrared fiber lasers.
研究领域:
材料科学
·
光学
·
光子学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 32
·期 24
·2201498
·
IF 19.924
Sijie Guo,Ting-Ting Wu,Yong-Gang Sun,Si-Dong Zhang,Bing Li,Hong-Shen Zhang,Mu-Yao Qi,Xian-Hu Liu,An-Min Cao,Li-Jun Wan
Solid-state batteries (SSBs) are promising for next-generation energy storage with advantages in both energy density and safety, but are challenged by the poor solid-to-solid contact between solid-state electrolytes (SSEs) and electrodes, particularly the lithium anode. Herein, a facile coordination-assisted deposition process is employed to build artificial Ta 2 O 5 nanofilms on SSEs, which is lithiophilic and has high stability against metallic lithium, thereby ensuring an intimate and stable interface between SSEs and lithium anode to sustain extended cycles. The feasibility is verified by using Li 6.5 La 3 Zr 1.5 Ta 0.5 O 12 (LLZT), a garnet-typed SSEs, as a model system. It is shown that a 12 nm Ta 2 O 5 nanofilm is able to significantly decrease the interfacial resistance from 1258 to 9 Ω cm 2 with a high critical current density reaching 2.0 mA cm −2 for the assembled symmetric cell, which shows an unprecedented capability to survive long-term cycling over 5200 h. This control strategy is also able to enable the use of the commercialized cathode materials of LiFePO 4 and LiNi 0.83 Co 0.07 Mn 0.1 O 2 in SSBs with both high reversible capacity and cycling capability. The study opens up a research avenue for the delicately carved interlayers through a scalable and reliable manufacturing process which can accelerate the commercialization of SSEs.
研究领域:
材料科学
·
电化学
·
能量存储
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Yifan Guo,Changhui Xin,Linjuan Dai,Yiping Zhang,Xin Yu,Quanhui Guo
Preparation of high-performance composites photocatalysts for organic pollutants degradation is of great significance. In this work, elemental doping was employed to realize the visible-light harvesting and visible-light photocatalysis of the (Al,C)-Ta 2 O 5 mesocrystals following by introduction of CdS quantum dots (QDs) into layered and poriferous (Al,C)-Ta 2 O 5 nanosheets for fabrication of S-scheme charge transfer pathways. In this work, the higher temperatures treatment induced the successful transformation of (Al,C)-Ta 2 O 5 nanosheets from Ta 3 AlC 4 MAX. The experimental results also revealed that CdS QDs/(Al,C)-Ta 2 O 5 composites showed highly enhanced visible-light absorption and visible-light photocatalytic tetracycline degradation performance. The optimal photocatalytic reaction rate constant of the CdS QDs/(Al,C)-Ta 2 O 5 -30% composite reached as high as 0.1117 min −1 , which was approximately 27.24 times of the (Al,C)-Ta 2 O 5 nanosheets and 2.43 times of CdS QDs , far better than those of commercial Ta 2 O 5 and pristine Ta 3 AlC 4 . Meanwhile, the prepared CdS QDs/(Al,C)-Ta 2 O 5 composites were also employed for efficient photodegradation of norfloxacin. Besides, the effects of various experimental parameters, reactive species determination, and band structures were also investigated. The improved visible-light photocatalytic performance of the CdS QDs/(Al,C)-Ta 2 O 5 composites was mainly attributed to fabrication of S-scheme charge transfer pathways for efficient charge separation.
研究领域:
环境科学
·
材料科学
·
化学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Lingjun Zhou,Wenyan Zheng,Muzhi Cai,Feifei Huang,Ying Tian,Shilong Zhao,Liaolin Zhang,Junjie Zhang
The TeO 2 -ZnO-Na 2 O glass system demonstrates significant promise for mid-infrared laser applications due to its high refractive index and low phonon energy, although it is inherently limited by poor thermal stability. Traditional methods aimed at enhancing thermal stability, such as the incorporation of intermediates, typically result in compromised optical performance. However, this study introduces a synergistic optimization strategy through strategic Ta 2 O 5 doping. A systematic analysis utilizing Differential Scanning Calorimetry (DSC), Raman spectroscopy, X-ray Photoelectron Spectroscopy (XPS), and photoluminescence (PL) spectroscopy has uncovered a novel correlation between optical performance and average rather than maximum phonon energy. This discovery provides a refined theoretical framework for the design of tellurite glasses. The optimized Tm 3 -doped TZNT4 glass, with a glass transition temperature ( T g ) of 388 °C and a thermal stability range ( ΔT ) of 137 °C, demonstrates excellent absorption (9.1 ×10 −21 cm 2 ) and emission cross-sections (7.1 ×10 −21 cm 2 ) at 2 μm. This work establishes a structure-property-performance paradigm for tellurite glasses, effectively addressing the critical trade-off between thermal robustness and mid-infrared emission performance through rational composition engineering.
研究领域:
材料科学
·
光学
·
固体物理
·
红外技术
·
玻璃工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Jing Liu,Min Ma,Xin Yu,Changhui Xin,Mingxue Li,Shijie Li
Constructing S-scheme charge transfer pathways is often considered to be an efficient strategy for boosting interfacial charge separation for high-performance photocatalysis, especially for ultrawide bandgap tantalum-based semiconductors. In this work, defects-mediated S-scheme ZnS 1-x quantum dots (QDs)/Ta 2 O 5-x composites decorated with Ag were prepared by the modified solvothermal and photoreduction methods and employed for visible-light photocatalytic toxic tetracycline degradation. Compared with commercial Ta 2 O 5 , pristine Ta 2 O 5-x microspheres, and ZnS 1-x QDs , the prepared Ag/ZnS 1-x /Ta 2 O 5-x -1.0% composite showed the highest visible-light photocatalytic performance, and the corresponding reaction rate constant reached as high as approximately 0.02605 min −1 , which was 5.97 times of ZnS 1-x QDs, 2.63 times of Ta 2 O 5-x , and far better than that of commercial Ta 2 O 5 . The main reactive species, photocatalytic mechanism and degradation pathways were also studied. The highly enhanced photocatalytic performance of the Ag/ZnS 1-x quantum dots/Ta 2 O 5-x composites could be mainly attributed to the formation of Ag modified S-scheme heterostructures and highly increased surface areas. Current work indicates a high-performance tantalum-based composite for dealing with persistent organic pollutants.
研究领域:
材料科学
·
环境科学
·
纳米技术
·
光催化
✓ 已验证
产品关联
DOI
高影响因子
ULTRASONICS SONOCHEMISTRY
·
2016
·
IF 4.556
Guanshu Li,Hongbo Zhang,Chunsheng Wei,Yingying Huang,Xuekai Dou,Yidi Wang,Jun Wang,Youtao Song
(5.0%)Er 3+ :Y 3 Al 5 O 12 /Pt-(TiO 2 -Ta 2 O 5 ) powder, as a high effective sonocatalyst, was prepared using sol-gel and calcination method. Then it was characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX). In order to evaluate the sonocatalytic activity of the prepared (5.0%)Er 3+ :Y 3 Al 5 O 12 /Pt-(TiO 2 -Ta 2 O 5 ) powder, the sonocatalytic decomposition of ametryn was studied. In addition, some influencing factors such as different Ti/Ta molar ratios on the sonocatalytic activity of the prepared (5.0%)Er 3+ :Y 3 Al 5 O 12 /Pt-(TiO 2 -Ta 2 O 5 ) powder, catalyst added amount with ultrasonic irradiation time and used times on the sonocatalytic decomposition efficiency were examined by using ion chromatogram determination. The experimental results showed that the best sonocatalytic decomposition ratio of ametryn were 77.50% based on the N atom calculation and 95.00% based on the S atom calculation, respectively, when the conditions of 10.00 mg/L initial concentration, 1.00 g/L prepared (5.0%)Er 3+ :Y 3 Al 5 O 12 /Pt-(TiO 2 -Ta 2 O 5 ) powder (Ti/Ta = 1.00:0.25 heat-treated at 550 °C for 3.0 h) added amount, 150 min ultrasonic irradiation (40 kHz frequency and 300 W output power), 100 mL total volume and 25–28 °C temperature were adopted. Therefore, the (5.0%)Er 3+ :Y 3 Al 5 O 12 /Pt-(TiO 2 -Ta 2 O 5 ) composite nanoparticles could be considered as an effective sonocatalyst for decomposition of ametryn in aqueous solution.
研究领域:
材料科学
·
环境科学
·
化学工程
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Lang Pei,Haichuan Feng,Qinan Mao,Lixiang Wang,Yu Zhang,Xin Wen,Xusheng Wang,Xiao Liu
Efficient photocatalytic CO₂ reduction necessitates optimal charge balance and proton migration between the CO₂ reduction and H₂O oxidation half-reactions. However, traditional research has predominantly focused on optimizing these half-reactions independently, neglecting potential synergistic effects. Here, this work demonstrates a photothermal catalyst of Pt/Ta2O5-x nanoplates that synergistically leverages the photothermal effect and redox dual-site cooperation to simultaneously accelerate the CO₂ reduction and H₂O oxidation, thereby maximizing proton-electron transfer. The integration of photothermal effect and photocatalysis ensures a strong driving force for CO2 conversion while accelerating proton migration, with Pt plasmonics generating localized heat from solar energy. In-situ characterizations reveal that O vacancy in Ta2O5-x enhances H2O dissociation to provide abundant protons, while Pt acts as electron acceptor sites, effectively activating the C=O bond. Theoretical calculations further illustrate the synergistic CO2 reduction and H2O oxidation on Pt and O vacancy sites, where the oxidation of *OH to *OOH is synchronized with the *CO desorption to CO, significantly lowering the energy barrier for proton-coupled electron transfer. Impressively, the Pt/Ta2O5-x exhibits exceptional photothermal catalytic performance in CO2-to-syngas conversion with a syngas yield up to 1.97 mmol g⁻¹ h⁻¹, which is 16.3-fold higher than Ta2O5-x. Furthermore, the apparent quantum efficiency reaches 3.5% at 365 nm, and the syngas selectivity is a remarkable 82%, while also exhibiting good stability.
研究领域:
催化化学
·
材料科学
·
环境科学
✓ 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）