您现在的位置: 首页> 研究主题> Fe2O3

Fe2O3

Fe2O3的相关文献在1981年到2022年内共计610篇,主要集中在化学工业、化学、一般工业技术 等领域,其中期刊论文596篇、会议论文14篇、专利文献807145篇;相关期刊350种,包括中学化学、复合材料学报、非金属矿等; 相关会议13种,包括第29届全国化学与物理电源学术年会、第七届中国国际纳米科技(武汉)研讨会、首届宝钢冶金废弃资源综合利用技术论坛等;Fe2O3的相关文献由1742位作者贡献,包括马振叶、付长璟、李凤生等。

Fe2O3—发文量

期刊论文>

论文:596 占比:0.07%

会议论文>

论文:14 占比:0.00%

专利文献>

论文:807145 占比:99.92%

总计:807755篇

Fe2O3—发文趋势图

Fe2O3

-研究学者

  • 马振叶
  • 付长璟
  • 李凤生
  • 覃吴
  • 吕洪水
  • 吴岩
  • 孙喆华
  • 孙海燕
  • 张婷
  • 张海礁
  • 期刊论文
  • 会议论文
  • 专利文献

搜索

排序:

年份

关键词

    • 张真伟; 王瑞浩; 王欣; 李瑞恩; 罗宇馨; 谭操
    • 摘要: 为了改善高氯酸铵(AP)的热分解性能,采用溶胶凝胶法将MIC材料(wFe_(2)O_(3):wAl=3:1)与AP进行复合,采用SEM、XRD、红外光谱对其形貌进行表征,并通过DSC研究MIC材料(Fe_(2)O_(3)/Al)对AP热分解的催化性能。结果表明:MIC(Fe_(2)O_(3)/Al)粒子复合在AP表面,且粒子尺寸大部分为纳米级别;与原料AP相比,加入MIC材料(Fe_(2)O_(3)/Al)后,AP的低温分解峰与高温分解峰重合,使AP热分解过程只出现1个分解峰,表明复合MIC材料(Fe_(2)O_(3)/Al)对AP的热分解有明显的催化作用,且复合样品的放热比原料AP更加集中。与原料AP的高温分解峰温相比,加入质量比5%、10%、15%、20%MIC材料(Fe_(2)O_(3)/Al)的复合样品分解峰温分别降低了65.7°C、75.9°C、78°C、79.7°C。
    • 孙涛; 刘立强; 丁聪; 张硕
    • 摘要: 采用分子动力学模拟方法研究了Fe_(2)O_(3)对MgO-Al_(2)O_(3)-SiO_(2)微晶玻璃体系微观结构的影响,从径向分布函数、桥氧数目、四面体数目和均方位移函数分析了不同Fe_(2)O_(3)含量下的微晶玻璃微观网络结构变化。研究结果表明:将Fe_(2)O_(3)加入到MgO-Al_(2)O_(3)-SiO_(2)微晶玻璃体系中,对Al-O、Si-O的径向分布函数影响很小;随着Fe_(2)O_(3)的增加,Al-O-Si、Al-O-Al、Si-O-Si、[SiO_(4)]和[AlO_(4)]的含量减少,Fe-O-Si、Fe-O-Al和[FeO_(4)]的含量增加,而Al^(3+)和Si^(4+)的均方位移是先增大后减小。当Fe_(2)O_(3)含量为4.0 wt.%时,Al^(3+)和Si^(4+)的均方位移达到最大。
    • Liu Xiaoqing; Wang Zisha; Hu Yuxing; Wang Haifang
    • 摘要: Fe_(2)O_(3)was synthesized by the solvothermal method,and the synthesized Fe_(2)O_(3)was added in the process of preparing BiOCl by hydrolysis,and then Fe_(2)O_(3)/BiOCl photocatalytic materials with different composite ratios were prepared.The optimal Fe_(2)O_(3)/BiOCl(1Fe/50Bi)sample showed a highest photocatalytic efficiency for cationic dyes(Rhodamine B)and anionic dye(methyl orange)degradation irradiated with visible light,as compared with that of a bare BiOCl catalyst.Meanwhile,radical capturing experiments indicated that the photo-induced holes(h^(+)) is the main active species.X-ray powder diffraction and ultraviolet-visible diffuse reflectance spectroscopy were used to characterize the structural and optical properties,which proved that Fe_(2)O_(3)was successfully composited to the BiOCl surface and effectively reduced the bandgap of BiOCl.More importantly,the optimal 1Fe/50Bi sample shows the highest photocatalytic efficiency for tetracycline(TC)degradation(98%)irradiated with visible light,as compared with that of a bare BiOCl catalyst.Consequently,the Fe_(2)O_(3)/BiOCl photocatalyst have potential applications in environmental purification.
    • 余石金; 朱文珍; 童家浩; 陈天瑞; 何璇男
    • 摘要: 因其低成本和高的储锂能力,Fe_(2)O_(3)作为一种极具潜力的锂离子电池负极材料而受到广泛的关注。采用水热法一步合成Fe_(2)O_(3),并应用在锂离子电池负极材料。采用XRD、SEM和TEM对样品的晶型与形貌进行分析,表明合成样品为树枝状Fe_(2)O_(3)单晶。在电池的电化学测试中,树枝状Fe_(2)O_(3)单晶电极表现出优异的循环稳定性(在100 mA/g下循环50次后为866.5 mAh/g)、良好的倍率性能(1 A/g充放电时的比容量保持为862.5 mAh/g)和高导电性。树枝状Fe_(2)O_(3)单晶电极良好的电化学性能可能源于单晶的高导电性、三维树枝状结构大的表面积和更多电化学活性位点。
    • 李志慧; 王云鹏; 符婉琳; 朱明芸; 柴蕴玲; 吴敏; 孙岳明; 代云茜
    • 摘要: 采用静电纺丝法获得的多孔Fe_(2)O_(3)纳米棒与氮掺杂还原氧化石墨烯(N⁃RGO)的复合材料作为载体,通过光还原法成功制备清洁、高活性的Pt/Fe_(2)O_(3)/N⁃RGO催化剂,并进一步研究其中的光还原反应机理和催化剂的抗烧结性能。研究结果表明,在可见光照射下,Fe_(2)O_(3)对光的强吸收作用促使光生电子和空穴的产生,N⁃RGO有效延长光生载流子的寿命,使得电子从O^(2-)转移到Fe^(3+)。Fe_(2)O_(3)/N⁃RGO中部分还原的Fe^(2+)具有较强的还原能力,可使PtCl_(6)^(2-)在Fe_(2)O_(3)表面还原并迅速成核,生长为粒径约2.13 nm的Pt纳米颗粒。此外,甲醇作为空穴清除剂可以快速有效地消耗掉扩散到载体表面的光生空穴,使导带中积累的电子与PtCl_(6)^(2-)发生还原反应,从而提高Pt纳米颗粒的光还原速率。电纺Fe_(2)O_(3)纳米棒独特的粗糙表面为Pt纳米颗粒异相成核提供了大量活性位点。富含点缺陷的N⁃RGO片层能缩短Fe_(2)O_(3)的光生载流子扩散路径,提高光沉积的效率;同时,其特征褶皱结构可以作为物理屏障,防止Pt纳米颗粒聚集。得益于金属与载体间的强相互作用,在500°C高温老化后,Pt纳米颗粒仍能维持较小的尺寸(2.67 nm),表现出优良的抗烧结性能。在对硝基苯酚加氢反应中,Pt/Fe_(2)O_(3)/N⁃RGO在400°C老化后仍具有高达22.2 L·g^(-1)·s^(-1)的反应速率常数,约为老化前的1.6倍。
    • Yuanjun Zhang; Dakai Wang; Xingxing Cheng; Zhiqiang Wang
    • 摘要: The effect of Fe_(2)O_(3) on the formation of micro glass beads(MGBs)under air staged combustion was studied.The experimental temperature was 1450°C,and Hegang bituminous coal was used as the experimental object.X⁃ray diffractometer(XRD),ash fusion tester,viscosity formula and scanning electron microscopy(SEM)were used to analyze the fly ash.Nano Measurer 1.2 software was used to measure the diameter of MGBs.The results showed that with the increase of Fe_(2)O_(3) in Hegang coal,the glass phase in fly ash first increased and then decreased.When the amount of Fe_(2)O_(3) was 15%,the content of the glass phase was the highest,which was 51.26%.The ash melting point first decreased and then increased,while the viscosity gradually decreased and the particles gradually became spherical.With the increase of Fe_(2)O_(3),the proportion of MGBs with particle size less than 10μm increased gradually.From the above results,it can be concluded that the addition of Fe_(2)O_(3) is conducive to the formation of MGBs and the reduction of particle size.
    • Jingxi Wang; Fengnian Zhu; Kun Li; Junwei Xu; Ping Li; Yubo Fan
    • 摘要: Chemotherapy is the prime tool for the clinical treatment of cancer.The efficiency of treatment has been greatly improved with the assistance of nanomedicine delivery systems.However,it still meets the challenge of ineffi-cient drug delivery and damage to normal tissues caused by uncontrolled drug release.Considering the various processes of nanomedicine acting on cancer cells,a pH-responsive mesoporous Fe_(2)O_(3)–Au nanomedicine delivery system with magnetic targeting was designed to achieve controlled drug release and improve the safety and ef-ficiency.Fe_(2)O_(3) particles were constructed with external mesopores and internal hollow structures,while Au nanoparticles were connected on the surface of Fe_(2)O_(3) particles through pH-responsive valence bonds to encapsulate the drug.The Fe_(2)O_(3)–Au nanomedicine delivery system was equipped with magnetic targeting function,which could be induced by an external magnetic field to increase the drug concentration to kill cancer cells as well as reduce damage to normal cells.Meanwhile,based on the pH-responsive feature,the drug embedded could only be released in the weakly acidic condition of the cancer environment,while the nanomedicine delivery system remained closed in normal tissues.The Fe_(2)O_(3)–Au nanomedicine delivery system possessed the functions of pH responsiveness and magnetic targeting,enhancing safety and efficiency and providing a promising method for cancer therapy.
    • Liu Xiaoqing; Cheng Hongjun; Wang Zisha; Zhang Jian; Lan Yanhua; Wang Xiaojing
    • 摘要: Composites of 2D/0D Fe_(2)O_(3)-Bi_(3)TaO_(7)(FO-BTO)prepared by a hydrothermal method in which superfine Bi_(3)TaO_(7) particles were mounted onto lamellae of Fe_(2)O_(3) sheets could efficiently remove aqueous tetracycline(TC)residues.The optimal composite FO-3BTO had a TC removal rate of 95%in 120 min under solar light,and its overall properties were better than those of reported photocatalysts.According to XRD,HRTEM,XPS,SEM,PL,EIS,and photocurrent tests,Fe_(2)O_(3) and Bi_(3)TaO_(7) composites formed on effective S-scheme heterojunctions,and the tight contact structure contributed to the increase in efficiency of aqueous TC residue removal.
    • 杨培渊; 夏凌云; 陶朝胜; 杨斌; 左广玲; 叶红勇
    • 摘要: 本文以硝酸钴和氯化铁为主要原料制备了Fe_(2)O_(3)∕CoFe_(2)O_(4)复合光催化材料。利用X射线衍射仪(XRD)和紫外-可见吸收光谱(UV-VIS)对样品的结构和光吸收性能进行了表征。并在可见光照射下,通过催化降解罗丹明B(RHB)溶液考察各催化材料的催化效果。结果表明,制备的复合催化材料是以CoFe_(2)O_(4)为主的面心立方尖晶石结构。在反应时间为8.5 h、反应温度为135°C和煅烧温度为500°C时,制备的Fe_(2)O_(3)复合量为3%的复合催化剂性能最好,光催化降解2 h后,罗丹明B降解率可达到96.62%。
    • 杨春晓; 张艳琨; 杨蒙; 彭国建; 张可欣; 郭丽芳; 夏福婷
    • 摘要: 本文采用密度泛函理论方法研究了Fe_(2)O_(3)上AsH_(3)的催化氧化反应机理.该反应以Fe_(2)O_(3)中的两个Fe原子为不同的活性中心进行研究,每个活性中心均设计了3个步骤.AsH_(3)分子依次与3个O_(2)分子在催化剂上相互作用分别形成中间体H_(3)AsO_(2)、H_(3)AsO_(4)及最终产物H_(3)AsO_(6).研究发现,当氧化反应发生在1号铁原子(Fe1)附近,其速度控制步骤活化自由能垒为49.99 kcal/mol;当氧化反应发生在2号铁原子(Fe2)附近,其活化自由能垒为21.20 kcal/mol,与直接氧化(50.14 kcal/mol)相比大大降低.可见AsH_(3)在Fe_(2)O_(3)上的催化氧化反应更易发生在Fe2附近.
  • 查看更多

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号