56509-17-2Relevant articles and documents
Self-stacked multilayer FeOCl supported on a cellulose-derived carbon aerogel: a new and high-performance anode material for supercapacitors
Wan, Caichao,Jiao, Yue,Bao, Wenhui,Gao, He,Wu, Yiqiang,Li, Jian
, p. 9556 - 9564 (2019)
To build high-energy density asymmetric supercapacitors (ASCs), current studies are always directed towards cathode materials; however, anode materials are paid much less attention. Here we for the first time demonstrate that orthorhombic FeOCl with a sel
Physical property change of FeOOH(AD) 1/4 during lithium insertion and extraction
Kanamura,Sakaebe,Fujimoto,Takehara
, p. 2713 - 2717 (1996)
The physical state changes of amorphous FeOOH incorporating aniline derivatives [FeOOH(AD) 1/4 ] in the course of discharge and charge cycling were studied using electron spin resonance (ESR). Two peaks were observed for the ESR signal of FeOOH
The practical application and electron transfer mechanism of SR-Fenton activation by FeOCl
Chen, Lei,Zuo, Shiyu,Guan, Zeyu,Xu, Haiming,Xia, Dongsheng,Li, Dongya
, p. 795 - 811 (2021)
An efficient FeOCl for persulfate (PS) and peroxymonosulfate (PMS) catalysis was synthesized by one-step method, followed by the exploration of structure and morphology using a range of techniques, such as XPS, FT–IR and SEM. Catalytic mechanism of FeOCl for PS and PMS was investigated to demonstrate its excellent catalytic performance. The results indicated that FeOCl had loose structure, large specific surface area and exposed active sites. Its strong Fe–O and Fe–Cl bonds could promote electron transfer, thereby accelerating the reduction of Fe3+ and improving the catalytic rate and utilization rate of oxidants. Since FeOCl had unique and superior structure, it could be used to catalyze 2 persulfates PS and PMS to degrade tetracycline hydrochloride (TTCH) and had good degradation efficiency and degradation stability. When prepared at 250?°C, FeOCl had the best catalytic performance. After 60?min, the degradation rate of TTCH under FeOCl/PS system was 78%, and under FeOCl/PMS system was 81%. After ten cycles, the degradation rate of TTCH still reached 80%. And this catalytic system had wide adaptability to pH. This work highlighted the catalytic versatility of FeOCl in persulfate and proved its application in the treatment of toxic organic wastewater through actual wastewater treatment experiment, which provided a scientific basis for enhancing catalytic performance of FeOCl. Graphic abstract: [Figure not available: see fulltext.]
Novel Z-scheme heterogeneous photo-Fenton-like g-C3N4/FeOCl for the pollutants degradation under visible light irradiation
Zhao, Junze,Ji, Mengxia,Di, Jun,Zhang, Yi,He, Minqiang,Li, Huaming,Xia, Jiexiang
, (2020)
Effective electron-hole separation efficiency is an important factor for enhanced photocatalytic activity. In this work, the Z-scheme heterogeneous photo-Fenton-like (HPF-like) g-C3N4/FeOCl catalysts were synthesized successfully by calcination method. The composites were applied for the photo-Fenton (PF) degradation of water pollutants with the assistance of H2O2. During this process, the color-less antibiotic tetracycline and dye rhodamine B were used as the target pollutants. Compared with pure FeOCl material, the Z-scheme g-C3N4/FeOCl composites reveal a higher PF catalytic activity under the irradiation of visible light. According to the experimental results, the enhanced catalytic activity of g-C3N4/FeOCl material was attributed to the formation of Z-scheme between g-C3N4 and FeOCl, which could promote the separation efficiency of electron-hole pairs induced by hybridization. Moreover, with the addition of g-C3N4, the increased specific surface area would further promoted the decomposition of H2O2 to form more [rad]OH. The results of radical trapping experiments and ESR confirmed the hydroxyl radical was the main active group in this process, indicating the Z-scheme was generated between g-C3N4 and FeOCl. Therefore, a possible mechanism of this HPF-like g-C3N4/FeOCl material was presented. This work may promote the development and application of FeOCl-based materials in the field of PF-like water pollutants treatment.
Application of FeOCl derivatives for a secondary lithium battery. III. Electrochemical reaction and physical state of reaction product of FeOCl with aniline in water
Kanamura,Sakaebe,Fujimoto,Takehara
, p. 2126 - 2131 (1995)
The reaction product of FeOCl with aniline in water was subjected to various analyses before and after its discharge and charge to determine its physical state and electrochemical reactions. From these analyses, it can be seen that there are two possible states for the reaction product before the discharge; one is a mixture of γ-FeOOH and aniline derivatives (polymer or oligomer of aniline), and another is a mixture of γ-FeOOH and FeOOH incorporating aniline derivatives. Atomic absorption analyses during discharge and charge cycles show that the steady-state discharge and charge processes are associated with a reversible change in lithium content in the solid matrix which change corresponds to the amount of electric charge passed. The Fourier transform infrared spectra indicate that the redox reaction of aniline derivatives (doping and undoping with anions) occurs during discharge and charge cycles. These results show that aniline derivatives exist in a different state from that of a simple mixture of the states of aniline derivatives and FeOOH.
FeOCl/Ln (Ln = la or Y): Efficient photo-Fenton catalysts for ibuprofen degradation
Shi, Xiaohua,Cui, Chao,Zhang, Lei,Zhang, Jian,Liu, Guodong
, p. 16273 - 16280 (2019)
Rare earth element (La and Y) doped FeOCl has been successfully prepared, which shows efficient Fenton catalytic activity for ibuprofen degradation under simulated solar light. The degradation constants of FeOCl/La and FeOCl/Y in photo-Fenton catalysis are a factor of 7.12 and 5.21 times higher than that of FeOCl, respectively. According to DFT calculations, the doping of rare earth elements formed new catalytically active sites, which promoted the production of OH radicals. The improved separation efficiency of photogenerated electron hole pairs in FeOCl/Ln (Ln = La or Y) also promotes the decomposition of H2O2 to produce OH radicals. A synergistic mechanism for FeOCl/Ln (Ln = La or Y) is proposed for the enhanced catalytic performance.
Change in Magnetic Properties upon Chemical Exfoliation of FeOCl
Ferrenti, Austin M.,Klemenz, Sebastian,Lei, Shiming,Song, Xiaoyu,Ganter, Pirmin,Lotsch, Bettina V.,Schoop, Leslie M.
, p. 1176 - 1182 (2020)
The development of novel, intrinsic two-dimensional (2D) antiferromagnets presents the opportunity to vastly improve the efficiency of spintronic devices and sensors. The strong intrinsic antiferromagnetism and van der Waals layered structure exhibited by the bulk transition-metal oxychlorides provide a convenient system for the synthesis of such materials. In this work, we report the exfoliation of bulk FeOCl into and subsequent characterization of intrinsically antiferromagnetic thin-layer FeOCl nanosheets. The magnetic properties of bulk FeOCl, its lithium intercalate, and its nanosheet pellet are measured to determine the evolution of magnetic properties from the three-dimensional to the quasi-two-dimensional system. This work establishes FeOCl and isostructural compounds as a source for the development of two-dimensional intrinsic antiferromagnets.
Preparation and properties of FeO(O2C2H4)1/2
Kikkawa, Shinichi,Kanamaru, Fumikazu,Koizumi, Mitsue
, p. 259 - 262 (1980)
An organic derivative of the layer compound FeOCl was obtained by the reaction of an intercalated compound FeOCl-(4-NH2py)1/4 and ethylene glycol C2H4(OH)2 at 110°C for 6 days. The reaction product was a brown crystal of flake shape. Its basal spacing was 14.5 A? when the product was still in ethylene glycol, but it shrank to 10.98 A? by washing with acetone. The chemical composition of the final product was FeO(O2C2H4)1/2. Mo?ssbauer isomer shift and quadrupole splitting were respectively 0.38 mm/s and 0.59 mm/s at room temperature. Thermal analysis and the infrared spectrum suggested a substitution of ethylene glycolate anions O2C2H42- for chloride ions in the FeOCl layer. A possible layer structure derived from FeOCl is proposed.
M?ssbauer studies on the spiral antiferromagnetic coupling in iron oxychloride
Dai, Yao-Dong,Yu, Zhi,He, Yun,Huang, Hong-Bo,Shao, Ting,Lin, Jun,Ali, Abdelilah Musa,Jiang, Zhong-Ying,Hsia, Yuan-Fu
, p. 473 - 478 (2002)
57Fe M?ssbauer spectroscopy has been used to study the noncolinear spiral antiferromagnetic coupling in FeOCl. The paramagnetic to antiferromagnetic transition occurs at 85 ± 1 K. Our M?ssbauer studies confirm that the preferential orientations of the spin of Fe3+ which are crystallographically of equivalent sites are parallel to the b and c axes with varied timescale of spin-spin relaxation as a result of competition among the intralayer antiferromagnetic superexchange coupling, ferromagnetic direct exchange coupling, and mixed interlayer dipolar-dipolar interaction.
Spiral magnetic structure of Fe in Van der Waals gapped FeOCl and polyaniline-intercalated FeOCl
Hwang,Li,Lee,Lynn,Wu
, p. 14157 - 14163 (2000)
High-resolution and magnetic neutron-diffraction measurements were performed to investigate the crystal and magnetic structures of bilayered FeOCl and polyaniline-intercalated FeOCl. A quasi-two-dimensional crystallographic structure, where charge neutral (Fe2O2Cl2)n lamellas are weakly linked via Van der Waals interactions, has made FeOCl a good host for accommodating guest molecules. A three-dimensional long-range ordering of the Fe spins in FeOCl develops below 80 K, with a magnetic unit cell 28 times the size of the nuclear one. A spiral magnetic structure was obtained, reflecting the competition between antiferromagnetic superexchange coupling and ferromagnetic direct exchange coupling. Polyaniline intercalation interrupts the magnetic correlations between the neighboring bilayers, rendering a coupled-bilayer quasi-two-dimensional magnetic order for the Fe spins in (C6D4ND)0.16FeOCl. No significant change on the ordering temperature of the Fe spins by the intercalation reaction was observed.
