Three-dimensional SiC ceramic microstructures with near-zero shrinkage were fabricated from a simple inorganic polymer mixture by inducing dual photocuring routes to produce highly dense polymer features by stereolithography and subsequent pyrolysis at 600 degrees C.
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Acta Biomater
January 2025
State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, P.R. China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, P. R. China. Electronic address:
Non-compressible hemostasis and promoting tissue healing are important in soft tissue trauma repair. Inorganic aerogels show superior performance in rapid hemostasis or promoting tissue healing, but simultaneously promoting non-compressive hemostasis and soft tissue healing still remains a challenge. Herein, SiO-based inorganic nanofiber aerogels (M@SiO, M=Ca, Mg, and Sr) were prepared by freeze-drying the mixture of bioactive silicates-deposited SiO nanofibers and SiO sol.
View Article and Find Full Text PDFLangmuir
January 2025
School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China.
To address the limitations of carbon nitride in photocatalysis, we propose constructing a three-dimensional interwoven SiC/g-CN composite structure. Utilizing the strong microwave-thermal conversion characteristics of SiC whiskers, localized "hot spots" are generated, which induce rapid thermal gradients, promoting rapid polymerization of urea and in situ formation of the interwoven network. This unique structure strengthens the interaction between these two components, creates multiple electron transport pathways, enhances CO adsorption, and effectively improves charge separation while reducing photogenerated carrier recombination.
View Article and Find Full Text PDFMolecules
November 2024
Department of Chemical Engineering, National Chung Hsing University, Taichung 40227, Taiwan.
In this study, a three-dimensional (3D) interconnected porous Ni/SiC skeleton (3D Ni/SiC) was synthesized by binder-free hydrogen bubble template-assisted electrodeposition in an electrolyte containing Ni ions and SiC nanopowders. This 3D Ni/SiC skeleton served as a substrate for directly synthesizing nickel-cobalt layered double hydroxide (LDH) nanosheets via electrodeposition, allowing the formation of a nickel-cobalt LDH nanosheet-decorated 3D Ni/SiC skeleton (NiCo@3D Ni/SiC). The multiscale hierarchical structure of NiCo@3D Ni/SiC was attributed to the synergistic interaction between the pseudocapacitor (3D Ni skeleton and Ni-Co LDH) and electrochemical double-layer capacitor (SiC nanopowders).
View Article and Find Full Text PDFClin Exp Dent Res
December 2024
Research Centre for Digital Technologies in Dentistry and CAD/CAM, Department of Dentistry, Faculty of Medicine and Dentistry, Danube Private University, Krems an der Donau, Austria.
Objectives: This study investigates the impact of drill play on the precision of implant positioning under lateral forces in guided implantology.
Materials And Methods: An in vitro experiment was conducted using artificial bone blocks and the SIC Invent-guided surgery implant system. Custom drill guides were designed, and 3D-printed, using three sleeve types: sleeveless, a big sleeve, and a small sleeve.
J Colloid Interface Sci
February 2025
School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014000, China.
Hydrogen oxidation reaction (HOR) as the anode reaction in proton exchange membrane fuel cell, usually suffers from the high loading of platinum (Pt) and subsequent CO poisoning especially by using industrial crude hydrogen as fuel. In this work, we propose a directional electron transfer route from Pt to MoO in the macroporous structure to significantly enhance the HOR activity as well as the CO tolerance, which is constructed by interface engineering and defect strategy to anchor highly dispersed Pt nanoparticles onto the three-dimensional MoO-C framework. The optimized 2Pt-MoO-C with 1.
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