Analytical Methods
·
2022
·Vol. 14
·期 8
·798-805
·
IF 3.532
Hongmei Liu,Shihao Dang,Mingdeng Li,Baogui Ye
Increasing the adsorption sites and effective interactions between sorbents and the targets can improve the solid-phase extraction (SPE) efficiency. Herein, based on the advantages of MOFs and TiO2 nanotubes (TiO2 NTs), an MIL-101(Fe)@TiO2 NT composite was prepared and applied to extract non-steroidal anti-inflammatory drugs (NSAIDs) from water samples coupled with high performance liquid chromatography (HPLC). Through characterization, it was established that MIL-101(Fe) was effectively composited on the surface and inside the TiO2 nanotubes, increasing effective adsorption sites. The obtained composite material well retains the structure and functional groups of the two original materials, and while retaining the original force with the target, it achieves a synergistic effect and produces more interactions with the target. Therefore, the extraction efficiency was greatly improved. The recovery efficiency reached 97.7–105.1% with an RSD of less than 6.71%, the detection limit was 0.1–0.2 μg L−1, and the linear range was 1–200 μg L−1 with a determination coefficient of 0.9972–0.9994. Owing to the stability of the two original materials, the composite material could be recycled and reused to extract NSAIDs up to 15 times without a loss of the recovery rate. Satisfactory results were obtained when it was used to extract NSAIDs from the Yellow River. These results indicate that the synthesized MIL-101(Fe)@TiO2 NT material is a promising sorbent to extract NSAIDs at trace concentrations with high efficiency and long lifetimes.
研究领域:
环境科学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2018
·Vol. 43
·期 4
·1827-1837
·
IF 3.201
Ling Huang,Jian Chen,Xiufang Li,Hui Liu,Jianbing Li,Tao Ren,Yanjing Yang,Shian Zhong
Bacterial infection and insufficient osseointegration of titanium and its alloys take primary responsibility for the failure of orthopedic implants. In this study, in order to improve antibacterial and osteogenic properties of titanium, homogeneous TiO2 nanotubes having diameters of about 114 nm were fabricated through electrochemical anodization for loading of antibacterial drug, norfloxacin. Then, polymethacrylic acid encapsulated TiO2 nanotubes were obtained by a free radical polymerization for sustained and controllable release of norfloxacin. The surfaces of different samples were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray powder diffractometry (XRD), X-ray photoelectron spectroscopy (XPS), and water contact angle measurements. The polymer encapsulated TiO2 nanotubes showed better sustained release of drug (more than 168 h) and predictably reduced burst release (34.4%). In addition, a series of antibacterial assays showed that the material had superior antibacterial activity against both Gram-positive Staphylococcus aureus (S. aureus) and Gram-negative Escherichia coli (E. coli) and also significant short- and long-term (more than 5 days) antibacterial effect. Furthermore, in vitro biocompatibility evaluation including cell viability and immunofluorescence staining measurements confirmed that this polymer encapsulated TiO2 nanotubes had excellent biocompatibility. Hence, the resultant material can be considered as a promising biomaterial for a long-lasting effect on reducing bacterial infection and enhancing bone osseointegration.
研究领域:
材料科学
·
生物医学工程
·
制药学
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产品关联
DOI
高影响因子
ADVANCED ENGINEERING MATERIALS
·
2023
·Vol. 25
·期 22
·2301062
·
IF 3.6
Binxia Yuan,Hong Qian,Lan Cao,Rui Zhu,Weiling Luan
Herein, H + in oxalic acid is used instead of Na + to obtain titanate nanosheets through P200 hydrolysis, which further curls to form a multilayer TiO 2 nanotubes (NTs) structure. Then, Cu 2 O quantum dots (QDs) are successfully loaded on TiO 2 NTs via a hydrothermal method using fructose as a reducing agent. The optical, impedance, and photocurrent tests indicate that the composite structure improves its optoelectronic performance. The photocatalytic H 2 production and CO 2 reduction efficiency of Cu 2 O QDs/TiO 2 NTs are lower than those of TiO 2 NTs. However, the molar ratio of CH 4 to CO produced by CO 2 reduction of Cu 2 O QDs/TiO 2 NTs composite catalyst is greater than that of pure TiO 2 NTs. The CH 4 production accounts for 97%, indicating that the composite catalyst has a high CH 4 selectivity. The experimental and density functional theory calculation results prove that the Z-scheme heterojunction accelerates the separation and transfer of photogenerated carriers, and broadens the absorption range of visible light.
研究领域:
材料科学
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纳米技术
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2025
·
IF 14.3
Yu Wen,Yue Liu,Yanghua Teng,Qiwen Yong,Dongmei Pu,Xiaoqiang Fan,Zhi-Hui Xie
A novel and long-lasting N 3 BD/TiO 2 composite photoanode with stable and superior photoelectrochemical and photoelectrochemical cathodic protection (PECCP) performances was achieved by synthesizing and depositing covalent organic framework (N 3 BD) on titanium oxide (TiO 2 ) nanotube arrays. The composite's increased visible light absorption capability enhanced the galvanic corrosion protection of nickel-phosphorus alloy-coated magnesium alloy (Mg/Ni) through PECCP technology. The open circuit potential (OCP) drops of the Mg/Ni electrode coupling with the N 3 BD/TiO 2 composite were 310 and 630 mV at dark state and under illumination, respectively. They remained relatively stable under intermittent visible light irradiation within 72 h, demonstrating excellent long-term stability. The superior photoelectrochemical and PECCP properties of the N 3 BD/TiO 2 are attributed to forming S-scheme heterojunctions, which effectively promote the separation and transfer of photogenerated electron-hole pairs and retain a strong redox capacity. This finding provides new insight into the design and synthesis of COF-modified photoanode with highly efficient and stable photoelectrochemical and PECCP performances.
研究领域:
材料科学
·
电化学
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
WATER AIR AND SOIL POLLUTION
·
2022
·Vol. 233
·期 10
·1-13
·
IF 2.984
Wu Zuwei,Ye Yuanyao,Cai Tingting,Jiang Wei,Ren Yongzheng,Liu Dongqi,Zhang Tiancheng,Zhang YanRong
Rainwater has been used in areas that have limited water resources. In this scenario, ultraviolet (UV) disinfection is often used to improve the quality of rainwater before its reuse. However, the technology is weakened by photoreactivation and dark repair for promoting the regrowth of microbes in treated rainwater. In this work, a system integrating UV and self-doped TiO 2 nanotube arrays (the UV-TiO 2 system) was used to solve the issue. The effects of the power of UV lamps, pH value, the area of TiO 2 nanotube arrays, biomass concentration, humic acid, sulfate, and nitrate concentration on the disinfection effect of the two systems were also studied. To achieve the standard of drinking water quality, the single UV system and UV-TiO 2 system needed 17 s and 12 s respectively for the rainwater treatment at medium biomass concentration. Increasing the area of TiO 2 nanotube arrays would improve UV-TiO 2 disinfection efficiency. Furthermore, the UV-TiO 2 system could better adapt to the changes in biomass concentration and low pH conditions than the UV system. The total colony count disinfected by the UV system was approximately 3.2 times higher than that by the UV-TiO 2 system after 8-h exposure to fluorescence light. The experimental results showed that the UV-TiO 2 system was better than the UV system in terms of disinfection, faster and more efficient inactivation, and inhibition of photoreactivation and dark repair.
研究领域:
环境科学
·
微生物学
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产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 114
·113115-113122
·
IF 3.289
Chunyan Wang,Yi Xu,Conghui Deng,Zhixu Liu,Rong Wang,Huazhou Zhao
In the present paper, we report on the design and fabrication of a recyclable microfluidic SERS chip with an integrated Au@Ag/TiO2 NTs (gold core silver shell nanoparticles (NPs) with decorated TiO2 nanotube arrays (NTs)) composite SERS substrate. The stripped TiO2 NTs with regularly arranged pore structures were prepared on a Ti foil by easy tape lithography followed by anodic oxidation. The Au@Ag NPs were fabricated on the mouth surface and the inner walls of the TiO2 NTs within a microchannel without clogging via a facile self-assembly chemical plating composite method. Under optimized conditions, the microfluidic SERS chip provided excellent sensitivity to R6G molecules with a detection limit of 10−10 M and a SERS enhancement factor (EF) of 1.15 × 108. Versus single Au NPs, Au@Ag NPs and the Au@Ag/TiO2 plate, the optimized Au@Ag/TiO2 NTs showed improved SERS peak intensities for the C–C–C bending (613 cm−1) of 20, 2.3 and 1.6 times enhancement, respectively. The enhancement effect was attributed to both electromagnetic and chemical enhancement. The photocatalytic performance of the Au@Ag/TiO2 NTs was exploited to recycle the microfluidic SERS chip through UV light photocatalytic purification. The experimental result shows that the microfluidic SERS chip featured high reproducibility and could be used as an efficient SERS detector for many biochemical molecules.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2022
·
IF 3.428
Ping Zhang,Xiangtong Wang,Xiaoping Su,Xiaohong Wei,Qiong su,Lijuan Han
In order to take advantage of the magnetic response properties of Fe 3 O 4 and the excellent photocatalytic activity of P 25 , water-soluble divalent iron salts and trivalent iron salts were used as raw materials; Fe 3 O 4 nanoparticles were grown in situ on TiO 2 nanotubes (TNTs) under alkaline hydrothermal conditions to synthesize magnetically separable defect TNTs nanocomposites. The composites were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), vibrating sample magnetometer (VSM) and other test methods. The morphology, crystal structure and saturation magnetization of the composites were analyzed. The adsorption and photocatalytic properties of magnetic Fe 3 O 4 /TNTs nanocomposites were evaluated by simulating the photocatalytic adsorption and degradation of tetracycline hydrochloride (TC) by magnetic Fe 3 O 4 /TNTs nanocomposites under sunlight. The results show that the magnetic separation of Fe 3 O 4 /TNTs nanocomposites has good magnetism, and the saturation magnetization is 22.60 emu/g, which can realize the separation and recovery of the composites. The removal rate of tetracycline hydrochloride by magnetic Fe 3 O 4 /TNTs nanocomposite was 90.96 % when the illumination was 90 mins. The prepared magnetically separable defect TNTs nanocomposites have excellent adsorption properties, photocatalytic activity and magnetism, photocatalytic activity and magnetic properties, and can be separated and recovered by external magnetic field.
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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2016
·
IF 3.782
Wei Wei,Zhongxue Yang,Weijie Song,Fengyun Hu,Bo Luan,Peiqiang Li,Hongzong Yin
CdSeTe nanoparticles (CdSeTe NPs)/TiO 2 nanotubes (TiO 2 NTs) and CdSeTe nanosheets (CdSeTe NSs)/TiO 2 NTs were fabricated by photoelectric deposition method and hydrothermal method, respectively. The band gap of the CdSeTe NPs/TiO 2 NTs (1.24 eV) is narrower than that of the CdSeTe NSs/TiO 2 NTs (1.48 eV). The photoelectrochemical conversion efficiency of the CdSeTe NPs/TiO 2 NTs is 2.72 times larger than that of the CdSeTe NSs/TiO 2 NTs, manifesting that the CdSeTe NPs/TiO 2 NTs possessed more excellent photocatalytic performance. Furthermore, the current density of electrocatalytic reduction CO 2 on the CdSeTe NPs/TiO 2 NTs was 2.47 times larger than that of the CdSeTe NSs/TiO 2 NTs, showing the excellent electrocatalytic performance of the CdSeTe NPs/TiO 2 NTs. The major product methanol was detected in the PEC reduction process on the two as-prepared materials. The yield reached 18.57 mmol L −1 after 300 min on CdSeTe NPs/TiO 2 NTs, which is 16 times larger than that of CdSeTe NSs/TiO 2 NTs.
研究领域:
材料科学
·
光电催化
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2014
·Vol. 39
·期 9
·4198-4205
·
IF 2.93
Zhenlong Zhang,Jichun Zhu,Shengjun Li,Xiangyang Liu,Yanli Mao
In this paper, TiO 2 nanotube (TNT) arrays and (Cu 2 Sn) x /3 Zn 1− x S ( x = 0.75, 0.24, and 0.09) nanocrystals were prepared, and TiO 2 nanotubes (TNTs) were sensitized with (Cu 2 Sn) x /3 Zn 1− x S nanocrystals. Compared with the plain TNTs, (Cu 2 Sn) x /3 Zn 1− x S sensitized TNTs present an enhanced photoelectrochemical response. The photocurrent enhancement was characterized with the photocurrent ratio of (Cu 2 Sn) x /3 Zn 1− x S sensitized TNTs to plain TNTs, which were 1.50, 1.63, and 2.13 for (Cu 2 Sn) x /3 Zn 1− x S with the composition of x = 0.75, 0.24, and 0.09, respectively. To understand this phenomenon, the energy band alignments of TNTs and (Cu 2 Sn) x /3 Zn 1− x S were investigated, based on which the conduction band offsets (CBO) between TNTs and (Cu 2 Sn) x /3 Zn 1− x S were determined, which were 0.31, 0.47, and 0.63 eV for (Cu 2 Sn) x /3 Zn 1− x S with the composition of x = 0.75, 0.24, and 0.09, respectively. These results display that the photocurrent enhancement becomes large with the increase of CBO, which indicates that the enhanced photoelectrochemical response is mainly due to the energy level matching between TNTs and (Cu 2 Sn) x /3 Zn 1− x S, and the variation of enhancement is resulting from the change of CBO.
研究领域:
材料科学
·
光催化
·
半导体纳米材料
·
能源材料
·
光电化学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2019
·
IF 4.084
Yuan Yao,Mingxuan Sun,Zihan Zhang,Xiaojing Lin,Bowen Gao,Sambandam Anandan,Wei Liu
A ternary composites of MoO 3 /Ag/TiO 2 nanotube arrays were synthesized by in-situ annealing of TiO 2 nanotube arrays impregnated with AgNO 3 over MoO 3 powders. During the annealing process , the crystallization of the TiO 2 nanotubes, the thermo-decomposition of AgNO 3 to Ag nanoparticles , and the sublimation of MoO 3 occur jointly. The photoelectrochemical measurements of the resultants indicate that MoO 3 /Ag/TiO 2 nanotube arrays present better photoelectrochemical properties compared with Ag/TiO 2 nanotube arrays and pristine TiO 2 nanotube arrays. Especially, the highest photocurrent and open circuit voltage are up to 21.29 μA/cm 2 and 0.058 V under visible light irradiation , whereas 1.77 and 3.87 times larger than those of TiO 2 nanotube arrays, respectively. Superior photoelectrochemical stability and larger photo-conversion efficiency of the ternary composites are also demonstrated. The improved photoelectrochemical properties are related to the close interfacial contact among MoO 3 , Ag, and TiO 2 as well as the surface plasma resonance of Ag in the ternary composites, which broaden the range of light response and enhance the efficiency of charge separation. This study provides a skillful solution to construct TiO 2 -based composite materials and demonstrates it is an unique architecture to promote the visible light driven photocatalytic application of TiO 2 .
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·Vol. 13
·期 5
·118305
·
IF 7.2
Qian Xie,Zhengxin Cai,Yuxuan Wang,Jiajia Cai,Jianmin Wang,Shineng Sun
Photoelectrochemical cathodic protection (PCP) driven by solar energy represents a promising alternative to conventional corrosion protection methods. However, severe photocarrier recombination within the photoanode remains a major obstacle limiting PCP efficiency. Herein, a Z-scheme heterojunction composed of 3D TiO 2 nanotube arrays (T) and 2D ZnIn 2 S 4 (ZIS) nanoflowers was rationally constructed for the controllable growth and effective application in the PCP of Q235 steel. Benefiting from the Z-scheme charge transfer pathway, intimated interfacial contact, and broad UV–visible light absorption capability, the T/ZIS heterojunction exhibited significantly enhanced charge separation and transport efficiency. In the optimized configuration, the open-circuit potential under illumination (OCP L ) of T/ZIS-5 coupled with Q235 reached −1.07 V vs. SCE, accompanied by a photocurrent density of 240 μA/cm 2 , over 6-fold higher than that of bare T and superior to other reported photoanodes under similar conditions. This work highlights the important role of electrode design and interface engineering in optimizing PCP performance and provides valuable insights for the development of high-performance heterojunction-based photoelectrodes for solar-driven corrosion protection in marine environments.
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
C.B. Song,Y.L. Zhao,D.M. Song,L. Zhu,X.Q. Gu,Y.H. Qiang
Dye-sensitized solar cells (DSSCs) based on TiO2 nanotube/nanoparticle (NT/NP) photoanodes and Cu2SnSe3 (CTSe) counter electrodes were fabricated. The effect of the thickness of the CTSe films on the DSSC performance was investigated. It was found that DSSC efficiencies firstly increased and then decreased with increasing the film thickness. The optimized DSSC efficiency of 3.14% was achieved at a suitable film thickness (2.9 μm). This work presents a new approach for developing low-cost alternative for expensive Pt in TiO2-nanotube-based DSSCs.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）