Nanoscale Research Letters
·
2020
·Vol. 15
·期 1
·1-10
·
IF 3.578
Shen Shuling,Wang Cheng,Sun Minquan,Jia Mengmeng,Tang Zhihong,Yang Junhe
In this work, a free-standing sodium titanate ultralong nanotube membrane for multifunctional water purification has been prepared. For obtaining this free-standing membrane with good tenacity, one-dimensional (1D) sodium titanate ultralong nanotubes with a diameter of about 48 nm and length of hundreds of micrometers were prepared from TiO 2 nanoparticles by a stirring hydrothermal method, which can be easily assembled into 2D membranes by facile vacuum filtration. After modified with methyltrimethoxysilane (MTMS), the free-standing membrane with hydrophobic surface possesses oil-water separation, self-cleaning and photocatalytic functions at the same time, which is favorable for the recovery of membrane and decontamination of various pollutants including oils, dust, and organic dyes from water. Furthermore, this membrane also exhibits excellent alkaline, acid, and corrosive salt resistance. This free-standing sodium titanate membrane with multifunction has potential applications in efficient wastewater purification and environmental remediation.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Yi Guo,Haiqing Li,Xiaofeng Dong,Rui Zhao,Runze Liu,Zhichuan Li,Shuming Wang
Sodium titanate material has been employed for the adsorption of heavy metal ions in water due to its open crystal structure and large layer spacing. However, its preparation conditions are harsh and recovery is difficult, which limits its practical application. In this paper, the sea urchin-like sodium titanate (SST) with hierarchical structure was synthesized under simple conditions. The chemical formula of obtained SST is Na 1.32 H 0.68 Ti 3 O 7 ·1.26H 2 O, the overall shape is spherical, and the average size is 1.7 μm. SST has a large specific surface area (351.64 m 2 /g) and demonstrates outstanding adsorption capacity for heavy metal ions (Ag + Cu 2+ and Cr 3+ ) in water. At room temperature and pH = 5, the adsorption of Ag + , Cu 2+ and Cr 3+ can reach equilibrium within 30 min, and the maximum adsorption capacity can respectively reach to 386.10 mg/g, 137.08 mg/g and 54.81 mg/g, which main mechanism is ion exchange and inner layer complexation. The sample also exhibits good recovery performance. After adsorption of heavy metal ions, SST can completely settle in a short time, which is conducive to its recovery. The advantages of simple preparation method, excellent adsorption behavior and outstanding recycling performance make SST promising to be further applied in practice.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
IEEE ELECTRON DEVICE LETTERS
·
2013
·Vol. 34
·期 11
·1424-1426
·
IF 2.789
Yupeng Zhang,Ying Zhang,Bo Fu,Wei Li,Wenbin Guo,Shengping Ruan,Dali Liu,Yu Chen
Sodium titanate Na
2
Ti
6
O
13
nanorods were synthesized by a hydrothermal method and characterized by X-ray diffraction and scanning electron microscopy. Then, the material was coated on a Al
2
O
3
ceramic substrate to fabricate humidity sensors using Ag-Pd as interdigitated electrodes. The sensor shows high humidity sensitivity and fast response and recovery. The impedance changes by five orders of magnitude over a relative humidity (RH) range from 11% to 95%. At the frequency of 100 Hz, response and recovery times are both <;2 s, and the maximum hysteresis is <;3% RH. In addition, the complex impedance at different RH was investigated to understand the sensing mechanism. The results indicate potential applications of sodium titanate for fabricating high-performance humidity sensors.
研究领域:
材料科学
·
传感器技术
✓ 已验证
DOI
高影响因子
Materials
·
2025
·Vol. 18
·期 8
·1844
·
IF 3.2
Shuling Shen,Ji Wang,Yaru Li,Xinjuan Liu,Zhihong Tang,Huixin Xiu,Jing Li,Guanglei Zhou
Graphene quantum dots (GQDs) show significant promise as antibacterial agents, but their application is hindered by several limitations, including potential cytotoxicity at high concentrations, as well as concerns regarding aggregation and reusability. In this study, sodium titanate (NTO) ultralong nanotubes were utilized as both a photocatalyst and support for GQDs. The NTO/GQDs heterojunction was formed by embedding GQDs nanoplates onto the walls of NTO nanotubes. This integration significantly improved the visible light absorption and enhanced the separation and transfer of electron–hole pairs, leading to an efficient photocatalytic antibacterial process. The NTO/GQD-8 self-supporting membrane composed of these ultralong nanotubes demonstrated outstanding antibacterial efficiency (99.99%) againstE. coliand exhibited remarkable cycling stability. Radical scavenging experiments revealed that ∙OH and e−were the primary reactive species driving the photocatalytic antibacterial process. Notably, NTO and NTO/GQDs-8 exhibited distinct antibacterial outcomes. After photocatalytic treatment with NTO/GQDs-8,E. colicells were completely fragmented, with no intact cell structures remaining due to the synergy effect of GQDs’ physical cutting during photocatalytic treatment.
研究领域:
材料科学
·
微生物学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2018
·
IF 5.091
Ye Zhang,Gongyi Li,Junming Liu,Tao Wang,Xue Wang,Bin Liu,Yunling Liu,Qisheng Huo,Zengyong Chu
Titanate-based materials are attractive inorganic adsorbents for wastewater treatment. In this study, hierarchical hollow sodium titanate microspheres (HHSTMs) were successfully synthesized via a template-assisted method. Silica microspheres were selected as hard templates, with a uniformly smooth TiO 2 shell first grown onto the surface of the SiO 2 cores. Then, through an alkaline hydrothermal process, the silica core was removed and the TiO 2 shell gradually converted into a sodium titanate shell with a preserved morphology. The as-synthesized HHSTMs are constructed from twined nanobelts, with a high surface area of 308 m 2 g −1 . A typical organic dye, methylene blue, was employed to investigate the adsorption properties of the HHSTMs. The adsorption process matched well with the Langmuir isothermal model, with the maximum adsorption capacity of methylene blue reaching 443 mg g −1 . Moreover, the resulting HHSTMs can be used to selectively capture of methylene blue from a cationic-anionic dye binary system due to their negatively charged surface. All adsorption processes were very fast and could complete in ten minutes.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Zejun Zhao,Sijia Li,Teng Wang,Yifan Qin,Meng Yan,Xiaobing Bao,Yelong Zhang,Yong Yang
Sodium-ions hybrid capacitors (SIHCs) have been recognized as one of the most potential energy storage devices, which can deliver high power and energy densities simultaneously. However, the sluggish kinetics of electrode materials severely restricts the performance of SIHCs. Herein, N, P-codoped carbon and WS 2 nanosheets coating on sodium titanate nanorods (NTO@WS 2 /N, P C) were first designed by in-situ growing process and sulfuration treatment for boosting sodium-ion storage. Specifically, NTO@WS 2 /N, P C electrodes displayed a satisfactory specific capacity of 274.7 mAh g −1 at 3.0 A g −1 after 1200 cycles. Furthermore, as-assembled SIHCs delivered high-energy density of 112.1 Wh kg −1 and high-power density of 4334.4 W kg −1 . Besides, long-term cycling test revealed that a remarkable capacity retention rate of 89.7% was obtained at 8.0 A g −1 after 2000 cycles. The excellent cycling stability and rate property could be ascribed to following aspects. On the one hand, N, P-codoped carbon could enhance the electrical conductivity and strengthen the structural integrality of the composites. On the other hand, ultrathin WS 2 nanosheets and one-dimensional (1D) NTO nanorods structure were conducive to the rapid diffusion of Na + . This work provides a convenient technique to stabilize the structure of electrode materials, which can promote the practical application of SIHCs.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2013
·
IF 4.675
Liping Zhao,Li Qi,Hongyu Wang
Sodium titanate nanotube (Na-TNT) sample has been prepared by a hydrothermal method using TiO 2 and NaOH as starting materials and then calcined at 400 °C in air. X-ray diffraction and N 2 adsorption–desorption tests have been employed to characterize its crystal and pore structure . The Na-TNT can be used as the negative electrode for electric energy storage devices using Na + -based organic electrolytes. The charge storage mechanism at the Na-TNT negative electrode has been investigated by electrochemical tests (galvanostatic charge–discharge, cyclic voltammetry , etc.), ex-situ XRD and HRTEM measurements. The electric energy storage devices of Na-TNT/graphite have been constructed and the influence of graphite/Na-TNT mass ratio on their performance has been studied.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2019
·
IF 6.282
Siyu Chen,Yonghong Cheng,Qian Xie,Bing Xiao,Zhengdong Wang,Jingya Liu,Guanglei Wu
In this work, sodium titanate (Na 2 Ti 6 O 13 ) nanowire/epoxy nanocomposites with different nanowire alignments and thicknesses were fabricated by employing the DC electric field during curing process. Nanocomposites showed obvious anisotropic dielectric properties . When nanowires were aligned perpendicularly to the electric field directions (X-Y-aligned), the breakdown strength (E B ) of nanocomposites with thickness of 1 mm and 0.5 wt% nanowires increased by 9.6% or 11%, compared to that of pure epoxy or no-alignment nanocomposites. When the thickness decreases to 10 μm, the E B enhancement further increased to 87%, compared to that of no-alignment samples. Thermally stimulated discharge current (TSDC) results indicated that more electronic deep traps were introduced perpendicular to alignment direction of nanowires and more shallow traps existed in the direction parallel to the oriented nanowires. The origin of the anisotropy in E B of nanocomposites was studied by analyzing the orientations of interfaces and the nanowires’ anisotropic crystal structure. This work gives invaluable guidelines for designing of thermoset functional materials .
研究领域:
材料科学
·
电气工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）