RSC Advances
·
2015
·Vol. 5
·期 76
·62160-62166
·
IF 3.84
Xinwei Jiang,Feng Wang,Gen Li,Lin Qi,Peng Liu,Yanfen Ding,Shimin Zhang,Mingshu Yang
As a kind of one-dimensional (1D) nanostructured material, nanorod rutile titanium dioxide (TiO2) with high surface-to-volume ratio shows potential applications in UV-ray shielding, self-cleaning devices, energy conversion and storage. Well dispersed rod-shaped rutile was prepared by hydrolysis of TiCl4 with hydrochloric acid (HCl) solutions and FeCl3 at low temperature. The crystalline form and morphology were characterized by X-ray diffraction (XRD), Raman spectrum and transmission electron microscopy (TEM). The doping of iron was confirmed by X-ray photoelectron spectroscopy (XPS) analysis. A series of experiments were conducted to figure out the effects of reaction conditions on the crystalline form and shape of the powders. The results showed that either change of acids (H2SO4 or HNO3) or varying of cations (NaCl or AlCl3) leaded to a mixed products or pure anatase. A possible mechanism was proposed to explain why the change of minerals or acids would make such a remarkable difference.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
SOLID STATE IONICS
·
2014
·
IF 2.112
Yongping Gan,Lingyan Zhu,Huaipeng Qin,Yang Xia,Han Xiao,Lusheng Xu,Luoyuan Ruan,Chu Liang,Xinyong Tao,Hui Huang,Wenkui Zhang
In this paper, rutile TiO 2 nanoneedle/graphene composites with a unique one dimensional/two dimensional (1D/2D) hybrid nanostructure were prepared via a facile hydrothermal route. These obtained rutile TiO 2 nanoneedles with the length of ~ 500 nm have a homogeneous dispersion on the interlayers of graphene nanosheets . As the anodic materials, the as-prepared sample exhibited the superior Li storage capability with good cycling stability (over 94% capacity retention) and remarkable rate performance (149 mA h g − 1 at a 5 C rate). The improved electrochemical performance can be attributed to the unique microstructure. On the one hand, 1D rutile TiO 2 nanoneedles shorten the length of Li + transport paths to achieve a higher Li + diffusion rate. On the other hand, 2D graphene sheets provide good electronic contacts to reduce the contact resistance, as well as keep the structural integrity of the electrode materials .
研究领域:
材料科学
·
纳米技术
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2015
·
IF 2.605
Guanjun Wen,Kuibao Zhang,Haibin Zhang,Yuancheng Teng,Ye Zhou
Synroc is recognized as the second generation waste form for safety disposal of high-level radioactive waste (HLW). In this study, the Synroc mineral of rutile was employed as host phase for the immobilization of Nd 2 O 3 and CeO 2 , which were selected as surrogates of trivalent and tetravalent actinide nuclides. Rutile waste forms with different Nd 2 O 3 and CeO 2 incorporations were prepared under normal pressure sintering. Nd 2 Ti 2 O 7 pyrochlore was produced as the target phase in 1100 °C calcined Nd-bearing TiO 2 . Lattice stabilization of CeO 2 in rutile TiO 2 could not be accomplished even under 1500 °C sintering. The 28 day normalized leaching rates ( LR i ) of Ti and Nd in Nd-bearing rutile, which decline congruously as the Nd 2 O 3 content increases, are lower than 3×10 −5 g m −2 d −1 . The incorporation of CeO 2 significantly impairs the aqueous durability of rutile waste form.
研究领域:
核废料管理
·
材料科学
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DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2026
·
IF 3
Zhiyuan Wang,Xiaohe Zhang,Yong Yang,Xiaobin Zhong,Suping Jia,Zongsheng Zhang,Yuan Gao,Junjie Guo,Xiaoping Han
Synthesis of highly uniform rutile TiO 2 nanorod arrays has long been a priority for fabricating the high-performance memristors, given its great potential as active-layer materials in memristive devices. Herein, a controllable hydrothermal synthesis of highly uniform rutile TiO 2 nanorod arrays on fluorine-doped tin oxide (FTO) substrates is presented. Through systematic investigations, it is revealed that the highly uniform rutile TiO 2 nanorod arrays are obtained via a 3-hour hydrothermal synthesis at 160 °C on vertical FTO substrates, postannealing at 450 °C for 1 hour, followed by 25-minute ultraviolet (UV) irradiation. The obtained TiO 2 nanorod arrays exhibit excellent substrate adhesion and pinhole-free morphology, with well-defined nanorod dimensions (an average diameter of 171 nm and a length of 2.44 μm) and high crystallinity (an average crystallite size of 16.66 nm). Using such nanorod arrays as the active layers, the Ag/TiO 2 /FTO memristive devices demonstrate remarkable resistive switching characteristics: (i) the ratio of high resistance state (HRS) and low resistance state (LRS) reaches 17.7, and (ii) the retention time is predicted to be more than 10 years. Current-voltage analysis indicates that the resistive switching behavior follows a synergistic combination of ohmic conduction and space-charge-limited current (SCLC) mechanisms. The current work offers valuable guidelines for structure-property optimization in highly uniform rutile TiO 2 nanorod array films, demonstrating their promising applications in high-performance memristive devices.
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DOI
PubMed
高影响因子
Materials Today Chemistry
·
2026
·
IF 6.7
Sibo Deng,Xiaoman Li,Yang Yang,Yue Cao,Guidong Yang,Min Luo
Nitrate photocatalytic reduction holds significant promise for wastewater treatment and green synthesis. In this study, the experimental results showed that the TiO 2 -500 sample, composed primarily of anatase phase with rutile phase heterojunctions, demonstrated superior catalytic performance. Under simulated sunlight, the nitrate reduction rate of this sample reaches 501.74 μmol g cat −1 h −1 within 1h, and the nitrate reduction conversion rate was 91.28 %. Notably, the selectivity of NH 4 + and N 2 was 65.12 % and 32.77 %, respectively, yielding a combined selectivity of 97.89 %. Catalytic activity was found to decrease with increasing rutile phase content. The enhanced performance of the anatase-rutile heterojunction stems from two synergistic mechanisms. First, defect states at the interface act as electron-trapping centers, effectively suppressing photogenerated carrier recombination. Second, the catalyst's retained porous MOF-derived structure provides a high contact area with reactants, thereby accelerating reaction kinetics. Through experimental characterization and theoretical calculations, this work elucidates the charge separation dynamics at the heterojunction interface and the nitrate reduction pathway, offering a strategic approach for designing high-efficiency heterojunction photocatalysts.
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DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2020
·
IF 6.444
Guohua Fan,Zhongyang Wang,Zaixin Wei,Yao Liu,Runhua Fan
Materials with negative permittivity have attracted considerable attention due to their promising applications in various electromagnetic equipment and electronic devices. Herein, percolative nickel/rutile cermets were sintered, of which the dielectric and magnetic properties were investigated in radio-frequency region. With nickel content increasing, electrical conductivity of the percolative cermets increased dramatically and the conduction mechanism changed from hopping to metallic behavior. Enhancement of positive permittivity in the percolating cermets was attributed to the increased interfacial polarization, while negative permittivity of the percolated cermets with nickel content exceeding percolation threshold was caused by plasma oscillation of delocalized electrons. Meanwhile, magnetic permeability of the epsilon-negative cermets was smaller than 1, which was resulted from the induced high-frequency diamagnetic response of eddy currents within the interconnected conductive networks. This work elucidated the anomalous dielectric and magnetic properties of percolated cermets and determined diamagnetism is an inherent nature of epsilon-negative metacomposites at high frequency.
研究领域:
材料科学
·
电磁学
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2016
·
IF 4.803
Zhensheng Hong,Jiaxing Hong,Chaobing Xie,Zhigao Huang,Mingdeng Wei
In this paper, we report a one-step and additive-free route for synthesizing hierarchical rutile TiO 2 with mesocrystalline structure. The rutile TiO 2 architecture constructed by oriented tiny nanorod subunits (around 5 nm in diameter) have nano/submicro hierarchical structures, nanoporous nature, a relatively large surface area and high tapped density. When the hierarchical rutile TiO 2 was studied as anode material for Li-ion batteries (LIBs), they exhibited a high reversible capacity of more than 250 mAh g −1 within a voltage window of 1–3 V, superior rate capability and very good cycling stability with 220 mAh g −1 after 100 cycles at 0.1 A g −1 . It’s notable that the hierarchical rutile TiO 2 exhibited superior Li-ion storage properties under deep cycling conditions (0.01-3.0 V), a stable capacity of 346 mAh g −1 after 100 cycles at 0.1 A g −1 could be remained. The hierarchical TiO 2 also displayed a large reversible capacity of more than 255 mAh g −1 (average value) at 0.05 A g −1 and good cycling performance for Na-ion insertion. These results, in combination with high volumetric storage capacity, render hierarchical rutile TiO 2 a promising anode material for rechargeable batteries.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
无机化学
·
固态化学
✓ 已验证
DOI
高影响因子
Nanoscale Research Letters
·
2017
·Vol. 12
·期 1
·1-7
·
IF 2.833
Zhao Weijie,Zhang Jing,Pan Jiaqi,Qiu Jianfeng,Niu Jiantao,Li Chaorong
The SrTiO 3 modified rutile TiO 2 composite nanofibers were synthesized by a simple electrospinning technique. The result of XRD, SEM and TEM indicate that the SrTiO 3 /TiO 2 heterojuction has been prepared successfully. Compared with the TiO 2 and SrTiO 3 , the photocatalytic activity of the SrTiO 3 /TiO 2 (rutile) for the degradation of methyl orange exhibits an obvious enhancement under UV illumination. which is almost 2 times than that of bare TiO 2 (rutile) nanofiber. Further, the high crystallinity and photon-generated carrier separation of the SrTiO 3 /TiO 2 heterojuction are considered as the main reason for this enhancement.
研究领域:
材料科学
·
纳米科技
·
光催化
·
环境功能材料
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DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2016
·
IF 6.333
Dongdong Wang,Zhongqiang Shan,Ren Na,Wenlong Huang,Jianhua Tian
Hedgehog-like mesoporous rutile TiO 2 (HLR-TiO 2 ) composed of well-defined nanoneedles is fabricated in a solvothermal system containing tetrabutyl titanate , hydrochloric acid aqueous solution and diethylene glycol with a proper volume ratio. A possible formation mechanism of the HLR-TiO 2 is proposed on the basis of different experimental results and three different morphologies are obtained by changing the solvent with other conditions unchanged. Given its unique hierarchical mesoporous nanostructures , the HLR-TiO 2 shows superior lithium storage properties with excellent discharge specific capacity of 243.3 mA h g −1 obtained after 100 cycles at a current rate of 1 C among the three samples, which is almost unparalleled to other rutile TiO 2 -based electrodes. In particular, a specific capacity of 80.2 mA h g −1 is still maintained after 2000 cycles even at a high current rate of 20 C, indicating that great potential of HLR-TiO 2 as an electrode material for lithium-ion batteries (LIBs).
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Lin-Chao Yang,Quan Zhou,Jin-Qiu Liu,Zhuo Wang,Yue-Chan Song,Wen-Wen Wu,Peng Liu
Extensive studies on TiO 2 -based colossal permittivity (CP, dielectric constant ε’ >10 3 ) materials have focused on the cation doping of metal elements; however, little attention has been paid to nonmetallic dopants. Compared to metallic elements, nonmetallic atoms with small radii and high activities, such as H, C, B, and N, can be used as anion-doping elements. Their incorporation into the TiO 2 lattice includes interstitial and substitutional doping, which can influence the bandgap of TiO 2 and its electron transport performance differently, thereby exhibiting considerable potential in TiO 2 -based applications. In this study, different N-containing compounds (BN and NH 4 Cl) were doped into rutile TiO 2 , while homogeneous ceramics of single-phase rutile TiO 2 were prepared via solid-state sintering. The effects of co-doping N, Cl, and N, B on the dielectric properties of rutile TiO 2 ceramics were investigated. While N and Cl doping showed no considerable effect on the dielectric properties of rutile TiO 2 ceramics, the co-doping of N and B doping in rutile TiO 2 considerably increased the dielectric constant to >10 4 with suppressed tan δ in a wide frequency range from 1 kHz to 10 MHz. These ceramics exhibited excellent frequency stability (up to 100 MHz) and temperature stability (153–513 K), which outperforms most reported transition metal co-doped TiO 2 ceramics, thereby highlighting the untapped potential of the non-metallic dopants in enhancing dielectric materials.
研究领域:
材料科学
·
电子工程
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Di Meng,Yongxiang Sun,Bin Yan,Rong Yang,Wenjihao Hu,Hongbo Zeng
Functionalized AFM directly quantified Pb 2+ -mediated BHA–rutile interactions. • Pre-mixed Pb–BHA maintained ~90% rutile recovery over pH 3.5–10.0. • Pre-formed Pb–BHA species strengthened interfacial adhesion on rutile. • Bubble-probe AFM showed that Pb–BHA weakened hydration-film resistance and facilitated bubble–rutile attachment. Understanding metal-ion-mediated interfacial interactions is critical for regulating hydroxamate adsorption on oxide surfaces. However, the molecular mechanism by which Pb 2+ promotes benzohydroxamic acid (BHA) adsorption on rutile (TiO₂), as well as its influence on bubble–rutile attachment, remains insufficiently understood. Herein, an integrated interfacial analysis combining functionalized atomic force microscopy (AFM) force spectroscopy and AFM bubble-probe measurements was employed to elucidate the Pb 2+ -assisted adsorption mechanism at the molecular level. Macroscopic flotation and wettability measurements revealed that pre-formed Pb–BHA complexes improved flotation stability and promoted rutile surface hydrophobization compared with untreated rutile, outperforming sequential reagent addition over a broad pH range. Functionalized AFM force spectroscopy provided direct evidence of strengthened collector–rutile interaction forces in the presence of Pb 2+ , confirming the formation of a stronger interfacial coordination structure. In addition, AFM bubble-probe measurements revealed that Pb 2+ –BHA adsorption weakened the hydration repulsion between air bubbles and rutile surfaces, promoted short-range attractive interactions, and facilitated bubble–mineral attachment. These results demonstrate that Pb 2+ functions as an interfacial coordination mediator by forming a metal–ligand–surface bridging structure, thereby enhancing both collector adsorption strength and bubble attachment efficiency. This study provides direct molecular- and interface-scale evidence for metal-ion-regulated hydroxamate adsorption, hydration-layer modulation, and bubble attachment enhancement on oxide mineral interfaces.
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Huazhang Feng,Zhaohui Chen,Cheng Lin,Yanping Chen,Jingyun Su,Enna Ha,Kan Zhang,Luyang Wang
Defect engineering is an effective strategy for enhancing the photocatalytic performance of semiconducting metal oxides. In this study, we demonstrate a simple method to engineer oxygen vacancies (OVs) on the surface of rutile TiO 2 by the use of thiourea. No bulk phase defects or heteroatom doping are introduced during the hydrothermal reaction, while preserving the original morphology of rutile TiO 2 . It was observed that the structural synergies with surface OVs significantly alter the electronic structure, thereby extending the absorption region of rutile TiO 2 and promoting efficient separation and transport of photogenerated carriers to the surface. The rutile TiO 2 with OVs on its surface exhibits highly photocatalytic H 2 evolution activity as 54.7 mmol·g -1 ·h -1 (with 1 wt% Pt loading), with an apparent quantum efficiency (AQY) of 24.7% at 380 nm.
研究领域:
材料科学
·
能源科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）