ACS Applied Nano Materials
·
2025
·
IF 5.5
Ting-Ting Li,Jinlong Zhou,Shiqi Wang,Xiaomeng Wang,Jia-Horng Lin,Yexiong Qi,Ching-Wen Lou
The application of piezoelectric bioscaffolds in bone tissue repair and regeneration has emerged as a research field. Barium titanate exhibits excellent piezoelectric properties and good biocompatibility, making it an ideal material for bone scaffolds. However, defects such as incomplete polarization and unstable piezoelectric properties significantly limit its application in this field. In this study, Ag+-modified barium titanate was mixed with hydroxyapatite in a sodium alginate solution, cross-linked to form a composite gel, and then injected into two-dimensional woven tubes. Through freeze-drying, woven bone scaffolds with a specific structure were successfully prepared. Ag+ significantly improved the piezoelectric stability of barium titanate. After polarization, the bone scaffold can generate a maximum output voltage of approximately 800 mV and an output current of 4.6 μA. Additionally, in vitro cell viability experiments indicate that the survival rate of osteoblasts on the polarized scaffold increased to 205.98%. This study expands the variety of bone regeneration materials and provides theoretical foundations and technical support for the development of bone tissue engineering.
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DOI
高影响因子
Journal of Materials Chemistry A
·
2026
·
IF 9.2
Liming Xiao,Fangyuan Yu,Ping Sun,Xiaodong Wang,Linmao Wen,Yunzi Ren,Feng Cao,Jun Mao,Qian Zhang
With the rapid development of the Internet of Things (IoT), there has been a significant surge in demand for flexible power supply. However, most existing solutions still face challenges in delivering both a continuous, stable energy supply and excellent mechanical adaptability.Herein, we report a Ag2Se network fabricated via a single-step electrodeposition process, which enables continuous regulation of porosity in the range of 75%-99%. This method leads to the formation of a highly interconnected porous architecture. The optimized network with 92% porosity demonstrates a synergistic enhancement of thermoelectric and mechanical properties, achieving a zT value of 0.38 and excellent strain stability, with only a 6.4% increase in resistance after 1000 compressive cycles. The single-leg device based on this material delivers a high power density of 181.5 μW cm -2 under a temperature difference of 40 K. In comparison, a denser network with 86% porosity, while mechanically rigid, achieves a room-temperature zT of 1.0, outperforming most bulk Ag2Se thermoelectric materials. This work provides an effective strategy to coordinate thermoelectric performance and mechanical flexibility through structural porosity modulation, paving the way for advanced wearable self-powered technologies.
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产品关联
DOI
高影响因子
Small
·
2024
·
IF 13
Han Xu,Rutao Meng,Xuejun Xu,Yue Liu,Yali Sun,Yi Zhang
Alkali metal is the requirement for highly efficient Cu 2 ZnSn(S, Se) 4 (CZTSSe) solar cells, thus it is crucial to additionally incorporate alkali metal into the absorber layer for flexible solar cells. However, the efficiency of flexible CZTSSe devices reported to date, based on the conventional alkali incorporation strategies, still lags behind those made on rigid substrates. One of the main issues is the inability to control the alkali content and distribution in the absorber layer. Here, a facile alkaline incorporation approach is proposed, effectively regulating the content and distribution of alkali metals in the film. Such a method can spontaneously tailor the alkali metal content to a proper level, thus leading to the suppression of non-radiative recombination and a better carrier transport through the enhanced film quality and the optimized band binding structure. Finally, a champion flexible CZTSSe solar cell with an efficiency of 11.88% is achieved, the highest reported efficiency for a CZTSSe solar cell without noble Ag doping. This study affords an innovative spontaneous alkali-doping design for the preparation of high-performance flexible CZTSSe solar cells and provides a deeper insight into the extent of alkali metal doping.
研究领域:
材料科学
·
可再生能源
·
光伏技术
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DOI
高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2023
·Vol. 88
·期 1
·62-74
·
IF 2.7
Yang Zhiquan,He Shan,Liu Wanhui,Zou Baosheng,Liao Wenning,Wang Yin,Wang Caiyun,Li Shuai,Niu Xiaojun
View large Download slide View large Download slide Close modal Efficient degradation of uranium(VI) (U(VI)) in wastewater is an urgent problem because of the chemical toxicity and radiotoxicity. In this study, the Ag x –SnS 2 photocatalysts were compounded by a simple hydrothermal method, effectively removing U(VI) under visible light in water. Compared with SnS 2 , the results indicated that Ag x –SnS 2 would decrease the crystallinity without destroying the crystal structure. Moreover, it has excellent photocatalytic performance on the degradation rate of U(VI). Ag 0.5 –SnS 2 exhibited a prominent photocatalytic reduction efficiency of UO 2 2+ of about 86.4% under optical light for 75 min. This was attributed to Ag-doped catalysts, which can narrow the band gap and enhance absorption in visible light. Meanwhile, the doping of Ag promoted the separation of photoinduced carriers, so that more photogenerated charges participated in the photocatalytic reaction. The stability and reusability were verified by the cycle test and the potential photocatalytic mechanism was analyzed based on the experiment. Ag x –SnS 2 material was prepared by a one-step hydrothermal method. Ag-doped SnS 2 has excellent optical adsorption capacity and a narrow band gap. Ag x –SnS 2 showed good performance in the photocatalytic reduction of UO 2 2+ . The mechanism of photocatalytic reduction of U(VI) by Ag x –SnS 2 was proposed.
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.5
Xianshu Zheng,Rui Piao,Xueqin Wang,Peng Qiao,Xin Guo,Meiru Zheng,Yanxiu Liu,Yuanyuan Wang,Hua Song,Yanguang Chen,Fuping Feng
In this study, TiO2 nanotubes were synthesized through anodic oxidation and subsequently coated with Ag and Cu2O nanoparticles via a two-step photochemical deposition process. The photocatalytic performance of the samples was further analyzed by the photocatalytic hydrogen evolution and photodegradation of Rhodamine B. The Ag/Cu2O/TiO2 nanotubes (4.34 at% of Ag and 0.13 at% of Cu) showed optimal photocatalytic performance. The nanocomposite catalyst delivered a photoinduced current density of 0.335 mA cm−2 and achieved 96.7% RhB degradation within 120 minutes of the reaction. The theoretical hydrogen production rate was 5.06 µmol cm−2 h−1, showing a 1.9-fold enhancement over that of pure TiO2. Electrochemical impedance spectroscopy and LSV tests further revealed that the Ag/Cu2O/TiO2 nanotubes exhibited improved charge transfer properties and hydrogen evolution activity. The performance is ascribed to the built-in p–n heterojunction between Cu2O and TiO2 that promotes carrier separation, further amplified by the intense local electromagnetic field generated through the LSPR effect of Ag, which collectively accelerates both photocatalytic degradation and hydrogen production rate over the Ag/Cu2O/TiO2 nanotubes. The methodology developed herein offers a practical guide for constructing novel multifunctional photocatalysts with controlled heterojunctions for diverse applications.
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DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 79
·75855-75861
·
IF 3.289
Qixuan Song,Hui Wang,Baoshan Yang,Fei Wang,Xinrong Sun
A novel silver nanoparticle-modified magnetic multi-walled carbon nanotube composite (Ag-FMWCNTs) was synthesized by embedding Fe3O4 and assembling Ag nanoparticles in one-step. The properties of the Ag-FMWCNTs composites and magnetic multi-walled carbon nanotubes (FMWCNTs) were studied by scanning electron microscopy, vibrating sample magnetometry (VSM) and Fourier transform infrared spectroscopy. The adsorption isotherms, adsorption kinetics and the effects of solution pH and ionic strength to adsorb emerging contaminant sulfamethoxazole (SMX) from aqueous solution on different multi-walled carbon nanotubes-based adsorbents were determined. The results showed that the adsorption kinetics could be explained well by means of the pseudo-second-order and intraparticle diffusion models. The pH experiments showed that maximum adsorption occurred at pH 4. Additionally, all adsorbents had a strong adsorption ability to SMX and the Langmuir maximum capacity followed the order: 5% Ag-FMWCNTs (118.58 mg g−1) > 3% Ag-FMWCNTs (86.41 mg g−1) > MWCNTs (73.69 mg g−1) > 1% Ag-FMWCNTs (70.26 mg g−1) > FMWCNTs (45.13 mg g−1). The spent adsorbents were regenerated in methanol. It was also found that after regenerating four times, multi-walled carbon composites retained up to 80% of their original adsorption performance. Therefore, the Ag-FMWCNTs composite could be used as a potential adsorbent for removing sulfamethoxazole from water.
研究领域:
环境科学
·
纳米技术
·
水污染控制
·
吸附材料
·
药物残留治理
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2019
·
IF 0
Yilong Huang,Yanhong Tian,Chunjin Hang,Yubin Liu,Shang Wang,Miaomiao Qi,He Zhang,Qiqi Peng
Silver nanowires (AgNWs) are the most promising materials to fabricate flexible transparent electrodes (FTEs) that are used in next-generation electronics. However, there are several bottlenecks for AgNW-based FTEs to achieve large-scale applications, which include the thermal instability and rough surface topography of AgNWs and the poor interfacial adhesion between AgNWs and the used substrate. To simultaneously address these aforementioned issues, a robust and washable FTE is prepared based on a AgNW@TiO2 core–shell network embedded in polyimide (PI) substrate through a facile and scalable solution-based process. After being treated with TiO2 sol, an ultrathin, conformal, and continuous TiO2 shell is coated on the AgNWs, which can effectively suppress the atomic surface diffusion. In comparison with a pristine AgNW network that breaks into nanorods and nanospheres at 250 °C for 10 min, the AgNW@TiO2 core–shell network is stable at 300 °C, and its resistance just increases by a factor of 11 after being annealed at 400 °C for 1 h. Furthermore, the TiO2 shell simultaneously increases the electrical and optical properties of the AgNW network. After PI precursors are flowed, dried, and thermally cured, the AgNW@TiO2 core–shell network is embedded on the surface of the PI substrate with a surface roughness of 1.9 nm. In addition to high thermal stability, the conductivity of the AgNW@TiO2–PI composite FTE remains almost unchanged after repeated peeling off cycles with 3M tape and mechanical bending cycles. It is also demonstrated that the AgNW@TiO2–PI composite FTE is washable, and the relative change in resistance (ΔR/R0) is ∼12% after 100 washing cycles, in which a variety of stress situations occur in combination.
研究领域:
材料科学
·
纳米技术
·
柔性电子学
·
透明导电薄膜
·
表面工程
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DOI
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Wenjing Xu,Hengquan Yang,Chengyan Liu,Zhongwei Zhang,Chunguang Chen,Zhenyuan Ye,Zhao Lu,Xiaoyang Wang,Jie Gao,Junliang Chen,Zhengchuan Xie,Lei Miao
As a lead-free thermoelectric material, SnTe is inhibited by its inherent high carrier concentration and high thermal conductivity. This work describes the synergistic effect on the modulation of band structure and microstructural defects of SnTe by Ag and Y codoping, which gives rise to band convergence and multiple microstructural defects (secondary phases, dislocations, and boundaries) in the matrix and endows Sn0.94Ag0.09Y0.05Te with an increased power factor of ∼2485 μW m–1 K–2, an extremely low lattice thermal conductivity of ∼0.61 W m–1 K–1, and a peak zT as high as ∼1.2 at 873 K. This work reveals that the combination of Ag and Y could play a role in the synergistic optimization of electronic and phonon transport properties of SnTe by modifying the band structure and microstructures, providing guidance for enhancing the thermoelectric performance of the relevant materials.
研究领域:
材料科学
·
热电学
·
半导体物理
·
能源材料
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DOI
高影响因子
ACTA PHYSICO-CHIMICA SINICA
·
2014
·Vol. 30
·期 9
·1667-1673
·
IF 0.886
XUE Qing-Rui,LI Jian-Ling,XU Guo-Feng,HOU Peng-Fei,YAN Gang,DAI Yu,WANG Xin-Dong,GAO Fei
A lithium-rich solid-solution layered cathode material, Li[Li0.2Mn0.54Ni0.13Co0.13]O2, was synthesized using a fast co-precipitation method, and surface modified withAg/C via chemical deposition. The electrochemical properties,
structures, and morphologies of the prepared samples were investigated using X-ray powder diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), galvanostatic charge-discharge cycling, cyclic voltammetry (CV), electrochemical impedance
spectra (EIS), and energy dispersive X-ray spectroscopy (EDS). The XRD results showed that the pristine and Ag/Ccoated cathode materials both have hexagonal α-NaFeO2 layered structures with the R3m
space group. Microscopic morphological observations and EDS elemental mapping showed that a uniform Ag/C coating layer of thickness 25 nm was deposited on the surfaces of Li[Li0.2Mn0.54Ni0.13Co0.13]O2 particles. The Ag/C-coated Li[Li0.2Mn0.54Ni0.13Co0.13]O2
material gave an excellent electrochemical performance. The initial discharge capacity (0.05C) of the Ag/C- coated sample was 272.4 mAh ·g-1, with an initial coulombic efficiency of 77.4%, corresponding to 242.6 mAh·g-1 for the pristine sample, with an initial
coulombic efficiency of 67.6%, in the potential range 2.0-4.8 V (vs Li/Li+). After 30 cycles (0.2C), the Ag/C-coated Li[Li0.2Mn0.54Ni0.13Co0.13]O2 retained a capacity of 222.6 mAh·g-1, which was 14.45%
higher than that of Li[Li0.2Mn0.54Ni0.13Co0.13]O2. We also found that the Ag/C coating improved the rate capability of the solid-solution material Li[Li0.2Mn0.54Ni0.13Co0.13]O2. The
capacity retention (1C) of the Ag/C-coated sample was 81.3%, compared with the capacity at 0.05C. CV and EIS results showed that the Ag/C coating layer suppressed the oxygen release in the initial charge progress and lowered the surface film resistance and electrochemical reaction resistance
of the pristine sample.
研究领域:
材料科学
·
电化学
·
储能
·
锂离子电池
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Xiang Ran,Ye Du,Zhenzhen Wang,Huan Wang,Fang Pu,Jinsong Ren,Xiaogang Qu
Developing methods of decreasing the harm to cell and increasing the antibacterial efficiency is becoming a potential topic of medical treatments. We demonstrated a hyaluronidase-triggered photothermal platform for killing bacteria based on silver nanoparticles (AgNPs) and graphene oxide (GO). The property of the hyaluronidase (HAase)-triggered release provided excellent antibacterial activity against Staphylococcus aureus. Upon illumination of NIR light, the GO-based nanomaterials locally raised the temperature, resulting in high mortality of bacteria. The HAase-triggered AgNPs releasing approach for antibacterial allows AgNPs to be protected by hyaluronic acid (HA) template without affecting mammalian cells. The nanocomposites provided antibacterial activity against S. aureus while showing low toxicity to mammal cells. In addition, the GO–HA–AgNPs are prepared for in vivo experiments and show excellent antibacterial property in wound disinfection model.
研究领域:
纳米医学
·
抗菌材料
·
光热治疗
·
感染性疾病治疗
·
生物材料
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DOI
高影响因子
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
·
2015
·
IF 3.615
Wenrong Cao,Lifang Chen,Zhiwen Qi
Novel Ag/Ag 2 SO 4 /ZnO nanostructures were successfully fabricated by a facile microwave-assisted template-free hydrothermal method. The results reveal that Ag/Ag 2 SO 4 nanoparticles are uniformly dispersed on the surfaces of ZnO plates, which forms the hierarchical Ag/Ag 2 SO 4 /ZnO (AZ) nanostructures. The AZ-2 photocatalyst obtained by adjusting the amounts of thiourea and AgNO 3 with the molar ratio of 1:1 exhibits the highest photocatalytic efficiency, and rhodamine B can be decolorized within 35 min and 20 min under visible-light ( λ > 420 nm) and natural sunlight irradiation, respectively. The enhanced photocatalytic performance of AZ catalysts may result from the synergistic effects of Ag/Ag 2 SO 4 nanoparticles loaded on ZnO surfaces, which can enhance visible-light absorption capability of ZnO and promote photoinduced electron–hole separation. Therefore, the Ag/Ag 2 SO 4 nanoparticles doped on semiconductors can be used as effective visible-light photocatalysts and show a great potential for practical applications in the treatment of dye-containing wastewater.
研究领域:
材料科学
·
光催化
·
纳米技术
·
环境化学
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DOI
高影响因子
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
·
2022
·
IF 6.044
Peibo Li,Jianian Hu,Tao Fang,Youlin Zhu,Yi Sun,Xiao Wang,Xuebin Yang,Qiang Shen,Guoqiang Luo
The objective of this study is to modulate the size of intermetallic compounds to increase the strength of Al–Ag composites. In this study, we prepared Al–Ag composites using plasma-activated sintering (PAS). The effect of the applied current on the nucleation barrier of the Al/Ag alloy phase was investigated. The strengthening mechanism of Ag-reinforced Al matrix composites was explored. We found that two alloy phases, Ag 2 Al and Ag 3 Al, were generated in the Al–Ag composites. The alloy phases distributed at the grain boundaries strengthened the Al–Ag composites by enhancing the dislocation density in the matrix and by impeding dislocation motion . The ultimate tensile strength and yield strength of the Al–7Ag composite increased by 60.1% and 166%, respectively, compared with those of pure Al. Moreover, we calculated the contribution of each strengthening mechanism to the overall yield strength. The applied current lowered the nucleation barrier of the alloy phase and facilitated the nucleation process.
研究领域:
材料科学
·
金属基复合材料
·
机械工程
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DOI
高影响因子
危险品化学品经营许可证（带存储）