博文
- WOOD CHEMISTRY
- 1Photoluminescence of Y2O3:Eu3+ prepared by mimicking wood tissue Wood tissue shows a hierarchical porous structure of unidirectionally oriented cells. Its porous structures range from the millimeter scale, via the micrometer scale to the nanometer scale. Different ...
- Freestanding Macroporous Silicon and Pyrolyzed Polyacrylonit
- Freestanding Macroporous Silicon and Pyrolyzed Polyacrylonitrile As a Composite Anode for Lithium Ion Batteries In the one step anodization liftoff procedure, the in situ change in fluoride ion concentration results in the formation of a high porosity layer beneath a low porosity layer under t ...
- Microporous mesopore and macropore
- 2001 Mesoporous high-surface-area activated carbon Mostly microporous in nature (with pore diameters less than 2 nm), activated carbons occupy an important position as adsorbent materials and are extensively employed for purification of gases, water and in chemical processi ...
- activated carbon
- 1996 Effect of steam and carbon dioxide activation in the micropore size distribution of activated carbon The three series of activated carbons were prepared from a common char, prepared by the carbonization of olive stones (nitrogen flow of 80 ml min -1 ...
- honeycomb structures films composed of graphene sheets
- Assembly of Graphene Sheets into Hierarchical Structures for High-Performance Energy Storage The graphene oxide (GO) solution was subjected to another 30 min of centrifugation at 14000 rpm. We then adjusted the pH value of the top clean solution to about 9 with 1 mol/L NaOH aqueous solu ...
- Preparation of Graphite Oxide (to be supplemented）
- Assembly of Graphene Sheets into Hierarchical Structures for High-Performance Energy Storage Graphite oxide was prepared from natural graphite powder (Sigma, 45 μm) via a modified Hummers method. Typically, graphite powder (0.3 g) was put into an 80 ℃ solution of concentrated H 2 SO 4 (2.4 mL), ...
- 听党的话，跟党走
- 热度 3
- 中国科技发展将走 创新、跨越、融合和可持续发展 之路。中国科技 总体水平特别是自主创新能力 同世界先进水平相比仍有较大差距，建设创新型国家任重道远。科技发展必须 自力更生、自主创新 ；必须 集中力量、重点突破 ；必须 服务经济、服务民生 ；必须 着眼长远，引领未来 。他提出，要使一切 创新想法 得到尊重、一切 创 ...
- carbon and ZnO
- Accurate Control of Multishelled ZnO Hollow Microspheres for Dye-Sensitized Solar Cells with High Efficiency All reagents were analytical grade and purchased from Beijing Chemical Co. Ltd., and used without further purification. Hydrated zinc nitrates Zn(NO3)2·6H2O were used as metal precurso ...
- hard carbon spherules
- 2001 Monodispersed hard carbon spherules with uniform nanopores In this work, sugar was selected as the precursor. The typical preparation process can be described simply in two steps, namely dewatering at low temperatures and carbonization at high temperatures. In the dewatering process,aqueous s ...
