iron(II) tungstate | 20405-35-0

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 过渡金属氧阴离子化合物
• 英文名称: iron(II) tungstate
• 英文别名: iron tungstate；Ferrous tungstate；dioxido(dioxo)tungsten;iron(2+)
• CAS: 20405-35-0
• 化学式: Fe*O₄W
• 分子量: 303.695
• InChiKey: SSWAPIFTNSBXIS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -2.62
• 重原子数：
  6
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  80.3
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  氧代氯化钨 、 iron(II) tungstate 生成 氯化亚铁
  参考文献：
  名称：

  GAJDAENKO, N. V.;SEMENOV, E. V.;SOLOZHENKIN, P. M., DOKL. AN TADZHSSR , 33,(1990) N, S. 28-31

  摘要：

  DOI：
• 作为产物：
  描述：

  iron(2+);tungsten(2+);triperoxide 生成 iron(II) tungstate
  参考文献：
  名称：

  TERRY, B. S.;AZUBIKE, D. C., TRANS. INST. MINING AND MET. C, 99,(1990) NEPT.-DEC., C. 175-182

  摘要：

  DOI：

文献信息

• The enthalpies of formation of FeWO4, MnWO4, and their solid solutions
  作者：J. Amosse、J.C. Mathieu

  DOI：10.1016/0021-9614(80)90090-7

  日期：1980.7

  Abstract The enthalpy of mixing to form the (1 − x )FeWO 4 + x MnWO 4 } solid solution has been determined by high-temperature solution calorimetry, by way of an especially designed (0.5LiBO 2 + 0.5NaBO 2 ) molten bath. Our ΔH value for FeWO 4 is in good agreement with literature values obtained by the same method, but differs from values deduced from measurements of the standard Gibbs free energy

  摘要 形成 (1 − x )FeWO 4 + x MnWO 4 } 固溶体的混合焓已通过高温溶液量热法通过特别设计的 (0.5LiBO 2 + 0.5NaBO 2 ) 熔池测定. 我们的 FeWO 4 ΔH 值与通过相同方法获得的文献值非常一致，但与从标准吉布斯形成自由能的测量推导出的值不同。报告了负混合焓。
• Preparation and photoelectronic properties of FeWO4
  作者：K. Sieber、K. Kourtakis、R. Kershaw、K. Dwight、A. Wold

  DOI：10.1016/0025-5408(82)90021-6

  日期：1982.6

  Single crystals and polycrystalline samples of FeWO4 were prepared and characterized. From high temperature paramagnetic data, the presence of high spin state FeII(3d6) was confirmed. Qualitative Seebeck measurements indicated p-type conductivity. The measured room temperature resistivity of single crystals was ∼100Ω-cm with an activation energy of .16(2) eV. No appreciable photocurrents were found

  制备并表征了 FeWO4 的单晶和多晶样品。根据高温顺磁数据，证实了高自旋态 FeII(3d6) 的存在。定性塞贝克测量表明 p 型电导率。测得的单晶室温电阻率为 ~100Ω-cm，活化能为 0.16(2) eV。在 pH = 8.3 的 0.2M NaAc 中没有发现明显的光电流。
• Photo-Fenton reaction for the degradation of tetracycline hydrochloride using a FeWO4/BiOCl nanocomposite
  作者：Xiaoqiang Shi、Lina Wang、Achuo Anitta Zuh、Yuefa Jia、Fei Ding、Hongfei Cheng、Qizhao Wang

  DOI：10.1016/j.jallcom.2022.163889

  日期：2022.5

  and Fenton reactions to utilize solar energy and H2O2 efficiently, which is currently one of the most effective technologies for removing organic pollutants. In this work, FeWO4/BiOCl composite with different BiOCl contents was successfully produced by a two-step hydrothermal method. The photo-Fenton efficiency of the synthesized materials was assessed by the degradation of tetracycline hydrochloride

  多相光-芬顿技术结合光催化和芬顿反应，有效利用太阳能和H 2 O 2，是目前去除有机污染物最有效的技术之一。本工作采用两步水热法成功制备了不同BiOCl含量的FeWO 4 /BiOCl复合材料。合成材料的光芬顿效率通过在模拟太阳辐照下四环素盐酸盐（TCH）的降解来评估。合成后的 FeWO 4 /BiOCl 复合材料在 H 2 O 2存在下表现出明显高于单个半导体的光催化性能在模拟太阳辐照下，表观反应速率常数高达0.0531 min -1 ，分别是BiOCl和FeWO 4的4倍和1.5倍。研究了pH、TCH浓度、H 2 O 2浓度和催化剂用量对TCH降解的影响，以确定优化的反应条件。还显示了 FeWO 4 /BiOCl 复合材料对 TCH 光芬顿降解的优异可回收性。进行光电化学分析以检查有效的电荷分离。FeWO 4显着增强的光芬顿催化性能/BiOCl复合材料归因于有效的电荷分离和更多的·OH自由基的产生。FeWO
• Controllable synthesis of FeWO4/BiOBr in reactive ionic liquid with effective charge separation towards photocatalytic pollutant removal
  作者：Yi Zhang、Jun Di、Wei Tong、Xiaoliu Chen、Junze Zhao、Penghui Ding、Sheng Yin、Jiexiang Xia、Huaming Li

  DOI：10.1007/s11164-018-3610-y

  日期：2019.2

  In the presence of reactive ionic liquid 1-octyl-3-methylimidazolium chloride [Omim]FeCl4, a new ferrous tungstate (FeWO4) was first synthesized by an ethylene glycol-assisted solvothermal process. Subsequently, FeWO4/BiOBr composites were prepared via an ionic liquid N-butyl-N-methylpiperidinium bromide [PP14]Br-assisted solvothermal process in mannitol solution. During the preparation process, [Omim]FeCl4 and [PP14]Br were used as reactants and templates. X-ray diffraction analysis, Fourier-transform infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectrometry (EDS), transmission electron microscopy, X-ray photoelectron spectroscopy, and other techniques were used to characterize the prepared FeWO4/BiOBr material. Besides, the photocatalytic activity of the FeWO4/BiOBr composites was evaluated by degradation of rhodamine B under visible-light irradiation, revealing that the best ratio of FeWO4 was 3 wt%. The photodegradation performance of FeWO4/BiOBr towards tetracycline was better than that of TiO2 (P25). The enhanced photocatalytic activity of the FeWO4/BiOBr composites derived from effective charge separation between FeWO4 and BiOBr. A possible mechanism for the enhanced visible-light photocatalytic performance of FeWO4/BiOBr was proposed.

  在反应性离子液体1-辛基-3-甲基咪唑氯化物[Omim]FeCl4存在下，首先通过乙二醇辅助溶剂热法合成了一种新型钨酸亚铁（FeWO4）。随后，在甘露醇溶液中通过离子液体 N-丁基-N-甲基哌啶溴化物 [PP14]Br 辅助溶剂热过程制备了 FeWO4/BiOBr 复合材料。在制备过程中，使用[Omim]FeCl4和[PP14]Br作为反应物和模板。采用X射线衍射分析、傅里叶变换红外光谱、扫描电子显微镜、能量色散X射线能谱(EDS)、透射电子显微镜、X射线光电子能谱等技术对制备的FeWO4/BiOBr材料进行了表征。此外，通过可见光照射下罗丹明 B 的降解来评估 FeWO4/BiOBr 复合材料的光催化活性，结果表明 FeWO4 的最佳比例为 3 wt%。 FeWO4/BiOBr对四环素的光降解性能优于TiO2(P25)。 FeWO4/BiOBr 复合材料的增强光催化活性源自 FeWO4 和 BiOBr 之间的有效电荷分离。提出了增强 FeWO4/BiOBr 可见光光催化性能的可能机制。
• pH-Controlled photocatalytic abatement of RhB by an FeWO₄/BiPO₄ p–n heterojunction under visible light irradiation
  作者：Nithya Mahendran、Sathya Udayakumar、Keerthi Praveen

  DOI：10.1039/c9nj04263f

  日期：——

  The novel FeWO₄/BiPO₄ heterojunction generates an inner electric field to promote electron–hole separation efficiency and is a proficient photocatalyst.

  小说FeWO₄/BiPO₄异质结产生内部电场，促进电子-空穴分离效率，并且是一种熟练的光催化剂。