Advanced Intelligent Systems
·
2021
·Vol. 3
·期 11
·2100030
·
IF 0
Pengli Dong,Weizhong Xu,Zhongwen Kuang,Youxing Yao,Zhiqin Zhang,Daoyou Guo,Huaping Wu,Tingyu Zhao,Aiping Liu
Smart hydrogel actuators with programmable anisotropic structures present fascinating prospects considering their distinctive shape transformation and controllable environmental responsiveness under external stimuli. However, the design of anisotropic hydrogels with simple and universal fabrication and programmable functionality is challenging for their valuable applications in smart actuators and soft robots. Herein, a simple, green, and devisable strategy is proposed to construct a heterogeneous porous hydrogel system by the different liquid diffusion (such as amyl alcohol, water, and ethanol) into a monomeric precursor solution of thermosensitive hydrogels. The well-defined micro/nanoporous gradient and patterned structures related to selective liquid stratification and interfacial diffusion favor the fast response and accurate programmable deformation of hydrogels under temperature stimuli. Inspiringly, this simple diffusion-driven tactic can be perfectly applicable for different responsive hydrogels with programmable multifunctionality by adding functional nanomaterials into the diffusible liquid. This green, general, and facile diffusion-driven strategy provides significant guidance for fabricating environmentally responsive hydrogels with tailorable functionality for their multipurpose applications in drug delivery, bioengineering, smart actuators, and soft robots.
研究领域:
材料科学
·
智能材料
·
软体机器人
✓ 已验证
产品关联
DOI
CATALYSIS TODAY
·
2018
·
IF 4.667
Houlin Wang,Shuting Luo,Xinghao Li,Wei Liu,Xiaodong Wu,Duan Weng,Shuang Liu
Developing catalysts with high cost-efficiency, good oxidation activities and strong thermal resistance is an ongoing task. Herein, we present the design and synthesis of confined catalysts with Ag protected by alumina. Thermal treatment at 800 °C for 10 h caused neither silver loss nor deactivation of this catalyst. Instead, nano-particles of Ag formed because of the heat/O 2 -derived ripening. These highly dispersed silver species and the catalyst’s mesoporous structure worked in tandem to achieve good catalytic performance for oxidation reactions, which made the aged sample a good candidate as CO elimination and gasoline particulate filter catalysts.
研究领域:
催化化学
·
材料科学
✓ 已验证
DOI
高影响因子
ACS Applied Electronic Materials
·
2022
·
IF 4.494
Ziming Zhang,Haibin Li,Haipeng Di,Dong Liu,Wei Jiang,Jiwei Ren,Zhengfang Fan,Feiyi Liao,Lin Lei,Gaocai Li,Ying Xiong,Yiying Zhao
The crystal quality limits the mobility-lifetime (μτ) product and the further applications of perovskite single crystals (PSC) in high energy radiation detections regardless of their high attenuation coefficient. In this paper, high-quality and controllable growth of MAPbX3 PSCs is demonstrated using the liquid-diffusion induced crystallization (LDSC) method. The growth kinetics are modeled to demonstrate the feasibility of the controllable growth via keeping the growth in the mass-transport-limited regime. The crystal growth rate is confirmed theoretically and experimentally to be constant and solely dependent on the growth temperature. A facile method is developed to measure the growth rate without disturbing or suspending the whole process. MAPbBr3 PSC grown at the optimal condition demonstrates a full-width at half-maximum of the (100) X-ray rocking curves of 0.0096°, a fluorescence lifetime of 1099 ns, a trap density of 4.5 × 109 cm–3, and a μτ product of 1.495 × 10–2 cm2 V–1. The resulting MAPbBr3 X-ray detector has a sensitivity of 2181 μC Gyair–1 cm–2. All results indicate that the controllable growth is beneficial to the crystal qualities and device performances. The concept proposed here will be inspiring for the community of researchers of perovskite materials.
研究领域:
材料科学
·
辐射探测技术
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
He Xia,Xiaojie Wang,Jianyong Li,Jianfeng Li,Jia Man
Sodium alginate has good biocompatibility and is widely used in the study of drug carriers. In this paper, a method to prepare calcium alginate microspheres with high sphericity based on double emulsion droplets was proposed, in which sodium alginate is used as the innermost phase. By adjusting the density of the system, the double-emulsion droplets could be suspended in the collecting solution, leading to the homogeneous reaction between the sodium alginate droplets and the calcium ions. By changing the flow rate, the size of the droplets could be changed, and by changing the concentration of calcium ions in the collecting solution, the sphericity of the calcium alginate microspheres could be changed. Then the swelling properties and drug release properties of calcium alginate microspheres were determined. The drug delivery study revealed that the insulin-loaded Ca-Alginate microspheres were able to decrease blood glucose by 41.4 % after oral administration to mice. Thus, the Ca-Alginate microsphere is a suitable candidate for controlled pH-sensitive drug delivery.
研究领域:
药学
·
生物技术
·
药物递送系统
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Energy & Environmental Science
·
2024
·
IF 32.4
Cong Liu,Anweng Gong,Chen Zuo,Tao Liu,Xiaoyang Liang,Donglou Ren,Kai Shen,Jianzha Zheng,Qifan Xue,Zhiqiang Li,Ruud E. I. Schropp,Bingsuo Zou,Yaohua Mai
High-quality heterojunctions are crucial for achieving high power conversion efficiency (PCE) in the antimony selenosulfide (Sb2(S,Se)3) solar cells. Here, we introduce lithium fluoride (LiF) doping of the precursor solution to improve the conductivity, morphology, and n-type characteristics of cadmium sulfide (CdS) films. In addition, Li-ions have high mobility, which enhances in situ diffusion into the Sb2(S,Se)3 absorber layer during subsequent hydrothermal deposition. Li effectively passivates selenium vacancies (VSe) and antimony anti-site (SbS) defects through the formation of Li–S(e) bonds. This lithiation process not only realizes a twofold optimization of the CdS buffer layer and the Sb2(S,Se)3 absorber layer, but also yields a favorable energy level arrangement and a wider depletion region at the CdS/Sb2(S,Se)3 heterojunction. By this way, we have achieved a champion PCE of 10.76% compared to a certified value of 10.50% for Sb2(S,Se)3 solar cells, which is the highest certified efficiency reported for Sb-based solar cells so far. This study provides a convenient method to optimize dual functional layers and heterojunctions for high-performance Sb2(S,Se)3 solar cells.
研究领域:
材料科学
·
能源科学
·
光伏技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yaoguang Wang,Nifang Zhao,Ziyu Shao,Jiaxian Wen,Qiong Ma,Weiwei Gao,Hao Bai
Biomimetic learning has boosted the development of layered nanocomposites with superior mechanical properties, fast ion conduction, high barrier capacities, and high conductivities, resulting in numerous practical applications in artificial structural materials, energy storage, filtration, and electromagnetic shielding. These outstanding properties arise from the highly oriented layered structure. Convenient fabrication and complex shapes are required for practical applications. However, conventional strategies, including ice templating, vacuum filtration, and electromagnetic induction, are constrained by time-consuming fabrication and sample shapes, restricting their extension to large-scale applications. Here, we present a facile, universal, and scalable strategy for fabricating layered nanocomposites using ion diffusion-induced directional gelation. This ultrafast volumetric production, including controllable thickness growth with no size restriction, results from continuous gelation and convenient post-processing, whose fabrication rate is 21.7 times that of ice templating, 13.2 times that of vacuum filtration, and 3.1 times that of electromagnetic induction. Furthermore, layered alumina/epoxy nanocomposites were prepared with superior specific strength (2.9 MPa m 1/2 /(Kg/m 3 )) and specific toughness (96.2 MPa/(Kg/m 3 )), demonstrating the validity of our strategy for layered structures. Moreover, our approach can be extended to other material systems and arbitrary shapes for multifunctional applications in wearable devices, sensors, and anti-corrosion coatings.
研究领域:
材料科学
·
纳米技术
·
复合材料
·
制造工程
✓ 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）