纳米四氧化三铁作为催化剂多次循环使用后仍具有较高的催化活性。
The nano-sized Fe3O4 catalysts after used for several times and recycled still remained a high activity.
以合成的纳米四氧化三铁为催化剂，过氧化氢为氧化剂，催化氧化含邻苯二酚的模拟废水和含邻甲苯酚的工业废水。
The nano-sized particles of Fe3O4 were used as catalysts for degradation of the catechol simulated wastewater and o-cresol industrial wastewater with hydrogen peroxide in the oxidation.
具体结果如下：以聚乙二醇为模板，在水热条件下了合成四氧化三铁纳米棒。
The result is as follows:Synthesis of magnetite nanorods with PEG as template under hydrothermal condition.
在水溶液中，经表面修饰的四氧化三铁纳米颗粒能保持超过18个月的单分散性而不沉淀。
The surface-modified Fe3O4 nanoparticles were monodispersed in an aqueous solution and did not precipitate in over 18 months.
实现了纳米颗粒状四氧化三铁和纳米层片状羟基磷灰石的复合，四氧化三铁分布均匀，无团聚。
The composition of nano granulated ferroferric oxide and nano lamellar hydroxyapatite is realized, and the ferroferric oxide has uniform distribution and no agglomeration.
以六水三氯化铁、四水二氯化铁和氨水为原料，在超声波辅助下，水热法制备了磁性四氧化三铁纳米粒子。
The nano-sized magnetic Fe3O4 particles was synthesized by hydro-thermal method with the help of ultrasonic wave by reacting FeCl3·6H2O with FeCl2·4H2O and NH3·H2O.
对细胞的横切面分析进一步显示，大部分的四氧化三铁纳米颗粒被细胞表面强烈地吸附并包裹了细胞。
TEM cross section analysis of the cells showed further that the Fe3O4 nanoparticles were for the most part strongly absorbed by the surfaces of the cells and coated the cells.
透射电镜结果显示，四氧化三铁纳米颗粒附着在4-6nm厚的纳米线束表面形成复合物。
Transmission electron micrographs show that the composite consists of Fe(3)O(4) nanoparticles attached to the surfaces of the 4-6 nm thick nanowire bundles.
透射电镜结果显示，四氧化三铁纳米颗粒附着在4-6nm厚的纳米线束表面形成复合物。
Transmission electron micrographs show that the composite consists of Fe(3)O(4) nanoparticles attached to the surfaces of the 4-6 nm thick nanowire bundles.
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