ACS Applied Materials & Interfaces
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2018
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IF 8.097
Yangqin Gao,Yandong Li,Guoqing Yang,Songsong Li,Nan Xiao,Boran Xu,Shuang Liu,Ping Qiu,Shijie Hao,Lei Ge
Fe2TiO5 was synthesized via the solvothermal method and adopted as co-catalyst to improve the photoelectrochemical (PEC) water splitting performance of BiVO4 photoanode. After surface modification by Fe2TiO5, the BiVO4/Fe2TiO5 photoanode shows a 300 mV cathodic shift in onset potential and 3 times enhancement in photocurrent, which delivers a photocurrent density of 3.2 mA/cm2 at 1.23 V vs reverse hydrogen electrode. Systematic optical, electrochemical, and intensity-modulated photocurrent spectroscopy characterizations were performed to explore the role of Fe2TiO5 and reveal that the enhanced PEC performance is mainly caused by the surface passivation effect of Fe2TiO5.
研究领域:
材料科学
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能源研究
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DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
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2020
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IF 3.83
Yefeng Feng,Junquan Zhou,Peiyao Chen,Maolin Bo,Qihuang Deng
High permittivity and low dielectric loss play a crucial role in enabling the applications of polymer-based composite dielectrics bearing ceramic particles in promising energy storage devices. The well-designed synergy of the two types of ceramics with varying conduction ability can effectively balance the high permittivity and low dielectric loss in composites. In this study, we optimised the dielectric properties of novel poly (vinylidene fluoride) (PVDF)/Fe 2 TiO 5 (FTO)/graphite ternary composite films fabricated via solution casting technology. FTO pseudo-perovskite micro-particles with semiconducting features and rich ionic electric dipoles were used as the primary filler. Graphite micro-particles with high conductivity were used as an assistant filler. PVDF with rich ferroelectric domains was utilised as a polymeric matrix. High permittivity of the composites was attributed to both the mild PVDF/FTO and strong PVDF/graphite interface polarisation effects. Compared with PVDF/FTO binary composites, the ternary composites filled with low-content graphite exhibited significantly improved permittivity and slightly increased dielectric loss. Controllable low-level interface leakage conduction was responsible for the low conductivity and dielectric loss as well as the acceptable electric breakdown strength achieved in the ternary composites. The ternary composite bearing 20 wt% FTO and 0.1 wt% graphite showed a high permittivity of ~45 at 100 Hz, low dielectric loss of ~0.15 at 100 Hz, and high breakdown strength of ~225 MV m −1 . We believe that this study will assist in facilitating the development of novel composite dielectrics containing semiconducting A 2 BO 5 pseudo-perovskite ceramic fillers.
研究领域:
材料科学
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能源存储
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DOI
高影响因子
MATERIALS & DESIGN
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2020
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IF 6.289
Qianqian Zhao,Guo Feng,Feng Jiang,Shanfang Lan,Junhua Chen,Feifei Zhong,Zuzhi Huang,Hui Pan,Jianmin Liu,Qing Hu,Weihui Jiang
A novel recoverable visible-light photocatalyst, amorphous Fe 2 TiO 5 /C composite, was prepared via nonhydrolytic sol-gel method with carbon-containing precursors as in-situ carbon sources. It is demonstrated that the precursors, iron ethoxide and butyl titanate, react to form Fe-O-Ti bonds in gel through a ether elimination reaction and amorphous Fe 2 TiO 5 at 300 °C, which finally crystallizes at 600 °C. The residual organic groups form uniform-doped C. Interestingly, the photocatalytic activity of amorphous Fe 2 TiO 5 /C is distinctly superior to those of its crystalline counterparts without C and P25 (43-fold increase and 12-fold increase, respectively), which is mainly attributed to the incorporation of C (8.17 wt%) and amorphous Fe 2 TiO 5 with a hollow spherical structure and a high BET surface area of 195.5 m 2 /g. Importantly, the photocatalyst can be recovered with a recovery rate of 100% simply by an external magnetic field, making it have promising applications in the wastewater treatment field.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
Environmental Science-Water Research & Technology
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2022
·Vol. 8
·期 8
·1763-1776
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IF 5.819
Di Li,Mingyang Long,Qianqian Zhao,Hongmiao Li,Qi Wen,Fang Song
Nanosized CoTiO3, NiTiO3 and Fe2TiO5 photocatalysts were synthesized by a simple sol–gel method successfully. However, they showed lower photocatalytic activity for the degradation of oxytetracycline hydrochloride under visible light irradiation. After the CoTiO3, NiTiO3 and Fe2TiO5 nanoparticles were loaded in the SBA-15 channels, the photocatalytic activity was enhanced obviously. In order to further enhance the removal efficiency of CoTiO3/SBA-15, NiTiO3/SBA-15 and Fe2TiO5/SBA-15, they were used to activate peroxymonosulfate under visible light irradiation. In particular, CoTiO3/SBA-15 could completely photodegrade oxytetracycline hydrochloride with the assistance of peroxymonosulfate in an hour. The influencing factors on activating peroxymonosulfate to degrade oxytetracycline hydrochloride were investigated in detail. In addition, the electron transfer and peroxymonosulfate activation mechanism for the efficient improvement in the photocatalytic performance were also proposed and proved by radical quenching experiments, electron spin resonance analysis, X-ray photoelectron spectroscopy, transient photocurrent responses and cyclic voltammetry. It was found that the combined activation effects of photogenerated electrons and transition metals on peroxymonosulfate to produce sulfate radicals could enhance the degradation efficiency obviously. This study could provide a new way for the synergetic effect of photocatalysis and peroxymonosulfate activation by transition metal to be used for efficient photocatalytic degradation in the field of antibiotic removal.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
RSC Advances
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2020
·Vol. 10
·期 71
·43762-43772
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IF 3.119
Qianqian Zhao,Guo Feng,Feng Jiang,Shanfang Lan,Junhua Chen,Mengting Liu,Zuzhi Huang,Jianmin Liu,Qing Hu,Weihui Jiang
Fe2TiO5/C photocatalysts were synthesized by a solid-state reaction method (Fe2TiO5/C(S)) and nonhydrolytic sol–gel (NHSG) method (Fe2TiO5/C(N)), where C was introduced by external carbon and in situ carbon sources, respectively. The Fe2TiO5/C(N) photocatalyst with in situ carbon has much better photocatalytic degradation efficiency than that of Fe2TiO5/C(S) synthesized by doping external carbon. The superiorities of in situ carbon were demonstrated by SEM, EDS, BET and photoelectrochemical analysis. Compared with Fe2TiO5/C(S) using external carbon as a carbon source, Fe2TiO5/C(N) with in situ carbon exhibits more uniform elemental distribution, much larger surface area, higher photocurrent density and lower resistivity of interfacial charge transfer. The results show that the introduction of in situ carbon via the NHSG method more easily promotes the separation of photogenerated electron–hole pairs, owing to the uniformity of the carbon element, thereby improving the photocatalytic activity of the photocatalyst.
研究领域:
材料科学
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光催化
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化学工程
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DOI
PubMed
高影响因子
Journal of Materials Chemistry C
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2024
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IF 5.7
Yang Chen,Ye Li,Xiaohuan Wang,Huijun Kang,Zhiming Shi,Guojun Ji,Zhipeng Yuan
Constructing heterojunctions is an effective strategy for improving the migration of electronic charge carriers and enhancing electronic conductivity. Herein, polyvinylpyrrolidone crosslinked with graphene oxide was used as a template to construct a FeTiO3@Fe2TiO5 endogenous heterojunction anode material (hetero-FTO) anode. The initial electrochemical capacity of the hetero-FTO anode (1207 mA h g−1 at 100 mA g−1) was approximately twice that of FTO (600 mA h g−1 at 100 mA g−1). Electrochemical kinetics and density functional theory calculations demonstrated that the built-in electric field formed at the interface of the endogenous heterojunction increased the electronic conductivity and effectively improved the conversion rate. The structural evolution of the heterojunction during cycling was tracked using in situ XPS and ex situ HRTEM and calculation of Gibbs free energies. After 100 cycles, the FeTiO3@Fe2TiO5 heterojunction structures transformed into cubic phase γ-Fe2O3; however, the capacity still increased to 865 mA h g−1. This ingenious heterogeneous-structure-design strategy and analysis of the heterogeneous structural evolution are crucial for improving the lithium-storage performance of batteries, especially those containing titanium-based conversion-type anode materials.
研究领域:
材料科学
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电化学
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DOI
高影响因子
Nano Energy
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2017
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IF 12.343
Xiaolin Lv,Kaiqi Nie,Huiwen Lan,Xin Li,Youyong Li,Xuhui Sun,Jun Zhong,Shuit-Tong Lee
Hematite is a promising photocatalyst for solar water splitting while its performance has been severely limited by various factors. Recently surface Fe 2 TiO 5 layer was widely reported to enhance the performance of hematite with a favorable band position to facilitate hole transport. Here we further show that the Fe 2 TiO 5 -incorporation in bulk hematite can also improve the performance with faster charge separation. Moreover, it can be well coupled with surface P-modification to simultaneously improve charge separation and hole transfer with a synergetic effect. The Ti and P co-modified hematite shows a significantly enhanced photocurrent of 2.37 mA/cm 2 at 1.23 V vs. RHE when compared to the pristine value of 0.85 mA/cm 2 . After coupling with Co-Pi catalysts, the hematite sample can even achieve a stable, high photocurrent of 2.90 mA/cm 2 at 1.23 V vs. RHE. The design of Ti and P co-modified hematite hollow nanostructures can be used as a promising candidate for solar water splitting applications. The discrete Fe 2 TiO 5 -incorporation also provides a good insight on the mechanism to understand other Ti-based treatments of hematite.
研究领域:
材料科学
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光催化
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DOI
高影响因子
Journal of Applied Spectroscopy
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2026
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IF 0.7
Hu Guowei,Wang Xiaohuan,Yuan Zhipeng,Guo You,Yang Congjie
Constructing heterojunctions is important for improving the photocatalytic performance of materials. In this study, porous Fe 2 TiO 5 was prepared via a sol-gel method, and CuS was grown in situ on its surface through a hydrothermal process, thereby successfully synthesizing CuS/Fe 2 TiO 5 heterojunction composites. The CuS/Fe 2 TiO 5 composites were characterized via X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-visible diffuse reflectance spectroscopy (UV-Vis), and Brunauer–Emmett–Teller (BET) analysis. The results indicated that CuS is uniformly loaded on the surface of Fe 2 TiO 5 , with lattice spacings of 0.3550 and 0.2972 nm corresponding to CuS and Fe 2 TiO 5 , respectively, and no impurity phases were observed. Heterojunction construction induced distortion of the TiO 6 octahedra at the interface, resulting in the emergence of a new absorption peak in the ultraviolet region. Among the samples, the 20 wt.% CuS/Fe 2 TiO 5 (denoted as 20CuF 2 ) composite exhibited a specific surface area (S BET = 6.17 m 2 /g) between those of CuS (S BET = 4.87 m 2 /g) and Fe 2 TiO 5 (S BET = 7.71 m 2 /g). Its bandgap was tuned to 1.78 eV, and the photoluminescence intensity was significantly reduced. A CuS/Fe 2 TiO 5 heterojunction composite was applied to facilitate the degradation of rhodamine B (RhB), achieving a degradation efficiency of 91.8%. The heterojunction catalysts developed in this study enable the effective degradation of pollutants in wastewater, providing a feasible technical reference for catalyst development and application.
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DOI
高影响因子
Materialia
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2026
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IF 3.1
Li Xu,Jiawen Hu,Weixiao Ye,Zixing Chen,Changsheng Ding
Developing high-performance anodes is pivotal for advancing the large-scale application of sodium-ion batteries (SIBs). Fe 2 TiO 5 is regarded as a promising anode candidate for SIBs owing to its unique crystal structure and high theoretical capacity. However, its electrochemical behavior in SIBs remains unexplored. In this work, Fe 2 TiO 5 nanoparticles are prepared via a facile sol-gel method, and their electrochemical performance is evaluated. Pure Fe 2 TiO 5 material is obtained at calcination temperature over 700 °C. The Fe 2 TiO 5 calcined at 700 °C has particle size in the range of 20–200 nm, and delivers a higher discharge capacity of 825.2 mAh g −1 and charge capacity of 243.0 mAh g −1 at 10 mA g −1 . The charge capacity of Fe 2 TiO 5 decreases with increasing the calcination temperature. Furthermore, the sodium storage mechanism of Fe 2 TiO 5 is preliminarily explored, which involves conversion reactions. These findings demonstrate the feasibility of Fe 2 TiO 5 as anode for sodium-ion batteries.
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高影响因子
Energy Technology
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2020
·Vol. 8
·期 7
·2000215
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IF 3.404
Hao Liu,Zhengping Li,Haiyan Sun,Qifang Lu
Iron titanate is of considerable interest as a potential anode material for electrochemical energy storage and conversion. Herein, a fiber-like Fe 2 TiO 5 –TiO 2 @graphene (rGO–FTO–TO) hybrid structure is rationally designed and delicately fabricated by anchoring reduced graphene oxide (rGO) nanosheets on Fe 2 TiO 5 –TiO 2 (FTO–TO) nanofibers. The effective wrapping of rGO nanosheets can greatly improve the electrical conductivity and reduce the volume expansion. When evaluated as an anode, the rGO–FTO–TO exhibits remarkable lithium storage properties in terms of high capacity, long-term cycling stability, and excellent rate capability. Moreover, there exists a strong electrostatic interaction between rGO nanosheets and FTO–TO nanofibers by the introduction of aminopropyltriethoxysilane to induce the immobilization of a positively charged NH 3 + group on the FTO–TO surface, promoting the bonding with negatively charged carboxylic acid ( COO − ) and hydroxyl ( OH) groups on the rGO. With strong electrostatic interaction, the rGO–FTO–TO exhibits appreciably enhanced initial capacity, elevated capacity retention, and high columbic efficiency compared with those of pristine FTO–TO nanofibers. This work provides a feasible strategy for fabricating a graphene-encapsulated FTO–TO fiber-like composite as a promising high-performance anode for lithium-ion batteries.
研究领域:
材料科学
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能源存储与转换
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Qi Sun,Limin Qi
Solar water splitting as a promising way to convert solar energy into hydrogen energy has been largely limited by the low efficiency of photoanodes in photoelectrochemical water oxidation. In this work, through deliberately employing a indium tin oxide (ITO) underlayer as an electron transport layer (ETL) and a Fe 2 TiO 5 overlayer as a hole transport layer (HTL), a novel triple-layer ITO/BiVO 4 /Fe 2 TiO 5 heterojunction photoanode was prepared by solution-processed sequential deposition. Owing to the unique ETL/BiVO 4 /HTL heterojunction structure, the photocurrent density at 1.23 V RHE was significantly increased from 1.70 mA/cm 2 for the pristine BiVO 4 photoanode to 4.60 mA/cm 2 for the ITO/BiVO 4 /Fe 2 TiO 5 photoanode. After iron silicate (Fe-Sil) was deposited as a new and efficient cocatalyst, the resultant quaternary ITO/BiVO 4 /Fe 2 TiO 5 /Fe-Sil photoanode achieved an extremely high photocurrent density of 6.19 mA/cm 2 and an ABPE value as high as 2.55%, indicating an outstanding performance toward solar water oxidation. The high performance of the quaternary ITO/BiVO 4 /Fe 2 TiO 5 /Fe-Sil photoanode may be attributed to the desired ETL/BiVO 4 /HTL heterojunction structure in combination with the utilization of the Fe-Sil as an efficient oxygen evolution cocatalyst.
研究领域:
材料科学
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能源科学
·
化学
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DOI
高影响因子
JOM
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2026
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IF 2.3
Zhang Shizhong,Sun Tongming,Ge Ming,Ni Lingli,Bi Lingling,Ali Nisar,Xu Weichuan
Pseudobrookite-type Fe 2 TiO 5 semiconductor nanoparticles were systematically synthesized via a co-precipitation method for the photodegradation of organic pollutants. The dual-level optimization from nanomaterial fabrication to reaction environment tuning enables a rational understanding of the factors governing photocatalytic efficiency. Optimal synthesis conditions were achieved using a 20% excess of Ti 4+ , a pH of 8, one-time ammonia addition, and calcination at 800°C for 6 h. The photocatalyst achieved 99.4% degradation efficiency for methylene blue (MB) under visible light with a 75-mg catalyst dosage, a 10-mg/L MB solution, at pH 6, and the addition of 7 mL H 2 O 2 . The photogenerated electron–hole pairs reacted with surface species to produce ·O 2 − and ·OH that degrade MB molecules oxidatively. The catalyst exhibited versatility and excellent recyclability, maintaining high activity over four consecutive cycles with only a minor decrease in efficiency. This study establishes the optimal synthesis parameters and reaction conditions for Fe 2 TiO 5 nanoparticles in visible-light photocatalysis.
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DOI
高影响因子
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