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Research on Preparation Methods of Ultrafine Softwood Powder
Changsheng Fan,Dongxia Yang,Hongling Wang,Yan Sun,Hua lou,Hongru Yang 보안공학연구지원센터 2016 International Journal of u- and e- Service, Scienc Vol.9 No.4
Pine wood sawdust is used as raw materials for experimental processing into ultrafine wood powder. Sizes of ultrafine wood powder particles serve as a standard for measuring ultrafine processing. The core part of the experimental processing equipment is the millstone which can exert great shear force and grinding force on strong fiber materials so as to ensure the successful preparation of ultrafine particles. The “equilibrium orbit” model is used to simulate processed superfine particles in calculating separation performance. Moreover, the CFD is chosen for simulating separation performance of wood powder particles with different sizes in the two-phase flow field, so as to ensure the successful separation and grading of wood powder particles with different sizes in the practical processing. Research is made on physical properties of collected wood powder as samples with different sizes and influence on composite material properties when ultrafine wood powder is taken as padding. Research on ultrafine wood powder provides meaningful experimental data and theoretical support for the future research on micro-nano fibrils.
Xiaolin Hu,Yuanyuan Li,Jian Tian,Hongru Yang,Hongzhi Cui 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.45 No.-
Finding a photocatalyst that can utilize the full solar spectrum is paramount importance inphotocatalysis. Assembling TiO2 with a narrow bandgap semiconductor to form a heterostructurewhich can harvest the light from UV to near-infrared (NIR) region would be ideal for photocatalysis. Here, we report the synthesis of Ag2S quantum dots (QDs)/TiO2 nanobelt heterostructures to display theUV-visible-NIR full spectrum photocatalytic property. The enhanced photocatalytic performance isascribed to the efficient charge separation properties of the heterostructure formed by intimate contactbetween Ag2S and TiO2, and efficient visible and NIR harvesting of Ag2S QDs on the surface of TiO2nanobelts.