DIAMOND AND RELATED MATERIALS
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2022
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IF 3.806
Xiaoyi Zhang,Guoliang Lin,Shenglan Ma,Mingyi Liu,Wanxi Jiang,Chen Wu
This article has been retracted: please see Elsevier Policy on Article Withdrawal ( http://www.elsevier.com/locate/withdrawalpolicy ). This article has been retracted at the request of the Corresponding Authors and Editor-in-Chief. One of the corresponding authors, Xiaoyi Zhang, notified the journal of several issues relating to the article and requested its retraction. These issues have been detailed below: - The experiments were not performed as reported in the article. Specifically, the coating was applied to a wood surface, rather than the reported concrete surface. When subsequent experiments were conducted using concrete, the experimental data were not reproducible. - Some of the authors informed the journal that they were not aware of the content of the manuscript, nor of their authorship. - In addition, according to Dr. Zhang: “…the pictures and data in the paper are used incorrectly, resulting in unreliable experimental results”. These issues represent a clear violation of our publishing policies, and publishing ethics standards. The Editor-in-Chief has assessed the case and decided to retract the article. The corresponding authors agreed to the retraction.
研究领域:
材料科学
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土木工程
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化学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2014
·Vol. 4
·期 89
·48317-48321
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IF 3.708
Yun Yu,Weimin Hou,Xuebing Hu,Yang Yu,Le Mi,Lixin Song
A novel superhydrophobic Al2O3 microfiltration membrane was prepared by the layer-by-layer assembly of TiO2 coating with subsequent fluorination grafting surface treatment by 1H,1H,2H,2H-perfluorodecyltriethoxysilane. The influence of surface morphology on membrane superhydrophobicity, pore size diameter distributions and pure water permeability of the different membranes were studied. By optimizing the grafting parameters, a needle-like surface of grafted TiO2-coated Al2O3 membrane with a water contact angle of 169.5° was obtained. The pure water permeability of different membranes varied from 100 l m−2 h−1 bar−1 before grafting to 3–5 l m−2 h−1 bar−1 after grafting, and the grafted superhydrophobic membrane showed excellent water repellence. The novel superhydrophobic membrane is shown to be promising for liquid–liquid and gas–liquid separation.
研究领域:
材料科学
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表面工程
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产品关联
DOI
高影响因子
ACS Omega
·
2024
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IF 3.7
Yuanxia Li,Fangfang Zeng,Guang Yang,Yi Li,Shun Zhang,Qibin Liu
Phosphogypsum (PG) constitutes a form of solid byproduct emanating from the manufacturing process of wet-process phosphoric acid. The fabrication of one metric ton of wet-process phosphoric acid entails the generation of approximately five tons of phosphogypsum, a highly prolific and economically viable waste stream. If we can effectively solve the problem of poor hydrophobicity of phosphogypsum, it is possible to replace cement and other traditional cementitious materials. In this way, we can not only improve the utilization rate of phosphogypsum but also obtain significant economic and environmental benefits. In the present investigation, hydrophobic surface coatings were synthesized and applied onto the surface of α-hemihydrate phosphogypsum (α-HPG) utilizing sol–gel processing and impregnation techniques. After hydroxylating α-HPG with alkaline solution (OH-α-HPG), titanium dioxide nanoparticles (TiO2) hybridized with perfluorodecyltriethoxysilane (PFDTS) were grafted on its surface. The assessment of the hydrophobic properties of the coatings was conducted through water contact angle measurements, Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) analyses. The contact angle remained above 124.2° after strong acidic and alkaline immersion and 50 tape adhesion experiments with good chemical stability and durability, and the mechanism of surface hydrophobicity modification was discussed. The experimental outcomes demonstrated a notable increase in the hydroxyl group concentration on the α-HPG surface following hydroxylation, significantly enhancing the attachment rate of PFDTS and TiO2 onto the HPG surface. PFDTS and TiO2 can undergo chemical interaction with hydroxyl groups, facilitating their robust adsorption onto the surface of OH-α-HPG through chemisorption mechanisms. After bonding the OH-α-HPG surface with PFDTS and TiO2 via hydrogen bonding, the otherwise hydrophilic α-HPG surface acquired excellent hydrophobicity (OH-α-HPG-PT, contact angle (CA) = 146.7°). The surface modification of α-HPG through hydroxylation and hydrophobicity enhancement significantly augmented the compatibility and interfacial interplay between α-HPG and PT. This research successfully enhanced the hydrophobic properties of α-HPG, profoundly showcasing its immense potential within the construction industry and the realm of comprehensive solid waste utilization.
研究领域:
材料科学
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环境工程
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产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2024
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IF 5.1
Xidong Wang,Yanrong Liang,Jiawei Liu,Qianxiong Wen,Cong Zhao,Xiaojuan Liang,Zhaopin Chen,Weidong Xiang
Phosphors in glass films (PiFs) is considered ideal conversion materials for laser lighting, but heat dissipation issue is the main challenge limiting its development. Therefore, it is urgent to find more excellent heat dissipation materials. Herein, we proposed to use AlN with high thermal conductivity as the substrate, and innovatively introduced TiO 2 coating to improve the interface reflection ability and solve the possible problems of shedding and cracking. After a series of optimizations, the LSN PiG-TiO 2 -AlN (PTA) color converter obtained a high thermal conductivity of 29W m −1 k −1 and a low surface temperature. At an input power of 5.2W, the luminous efficiency can reach 175 lm/W and the relative initial intensity can still be maintained by 95.3% at 200 °C. Benefiting from the extremely strong heat dissipation capacity of the AlN substrate, the LSN PTA color converter maintains its relative luminous intensity at 95 % of the initial intensity after 24 h of continuous illumination, which is the best value recorded so far. In addition, LSN PTA is combined with CaAlSiN 3 :Eu 2+ phosphor to achieve high-quality white light with a CRI of 82.5. The above results indicate that LSN PiG-TiO 2 -AlN color converters have a promising research prospect in the field of laser lighting.
研究领域:
材料科学
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光学工程
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产品关联
DOI
高影响因子
Catalysts
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2020
·Vol. 10
·期 1
·69
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IF 3.52
Zhen Cao,Tingting Zhang,Pin Ren,Ding Cao,Yanjun Lin,Liren Wang,Bing Zhang,Xu Xiang
We demonstrate that using neoprene as a binder during the fabrication of TiO2-coated fabrics enhances the rates of photodegradation of dyes by the fabrics. The neoprene binder simultaneously modifies the surface of the TiO2particles with Cl and dopes the TiO2with Cl, without requiring high temperatures or other harsh laboratory treatments. The adsorption of chlorine on the surface and doping of the lattice with chlorine were confirmed by X-ray photoelectron spectroscopy. The chloride ions adsorbed onto the TiO2surface introduces a negative surface charge that enhances electrostatic adsorption of cationic dyes, and greatly improves the self-sensitizing degradation performance of the dyes. Chloride ions replace lattice oxygen atoms in TiO2, inducing lattice oxygen vacancies, that reduce the apparent band gap of the TiO2particles, enhancing its absorption of visible light, and further increasing the photocatalytic activity of the composite-coated fabric. The degradation rates of RhB and MB over 50 min were 95.2% and 96.0%, respectively. The degradation rate for MO reached 95.4% after 180 min. We also show that •OH and •O2−are active agents in the dye-degradation mechanism. Moreover, the photocatalytic performance of the composite-coated fabric was unchanged after eight cycles of photocatalytic degradation of RhB, demonstrating that the photocatalyst-coated fabrics was highly recyclable.Keywords:TiO2-coated fabrics;self-sensitizing degradation;neoprene;chlorine doping;oxygen vacancies
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 17
·13956-13967
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IF 2.779
Sun Haibo,Zhou Guohua,Guo Zhili,Wang Ce,Wang Jinghui,Zong Changbao
The high-quality TiO 2 insulating layer on the commercial gas-atomized FeSiAl powder surface was efficiently prepared within a total time of 1 h at room temperature via a one-pot sol–gel method based on a developed industry-oriented coating equipment. The core-shell structure for the chemically coated FeSiAl powders was detected by the joint tools of SEM, EDS, and FTIR. Combined with the establishment of loss separation fitting model, the regulation mechanism analysis on soft magnetic properties was carried out for the FeSiAl powder cores insulated with different TiO 2 coating amounts. It is found that the interface-pinning effect, which is closely related to the core’s density, is an important factor affecting the magnetic properties of powder cores. With the elevating TiO 2 coating amount, the hysteresis loss, the excess loss, and DC-bias property of the core specimen exhibit the same increasing tendency, while the real part of complex permeability at 100 kHz gradually decreases owing to the increase of non-magnetic gap between the particles in the core, which can impede the domain-wall motion during magnetization. Correspondingly, the eddy current loss persistently decreases and contributes only 18.7% ~ 21.6% of total core loss when the precursor concentration is over 0.08 ml/g due to the formation of the intergranular insulated structure blocking the inter-particle eddy current flows in the composites. These results offer insights into subtly regulating magnetic properties when the adjusting process parameters for the soft magnetic composites are used in high-power and high-frequency applications.
研究领域:
材料科学
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电磁学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
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2025
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IF 5.6
Tao Li,Pengyu Lin,Junjie Song,Yin Du,Xin You,Yunfeng Su,Haifeng Wang,Yongsheng Zhang,Litian Hu
The quality of surface coatings considerably depends on the characteristics of the raw powders. To manufacture TiO 2 ceramic coatings with the desired tribological properties, utilizing high-quality spheroidized raw powders prepared via spray drying is a feasible and high-efficient approach. In this study, by adjusting the solid loading and dispersant content, an agglomeration-dispersion equilibrium is achieved in the optimized granulating slurry. This ensures the stable transportation of the slurry before the atomization process to form droplets, which has a substantial effect on the shape, size, and morphology of the microspheres. Subsequently, based on the thermophysical analyses (a mass loss induced by the removal of water or organic content is noted, and the differential scanning calorimetry results indicate organic degradation), reasonable post-treatment parameters are applied to enhance the strength of the microspheres without causing phase transformation or altering the microstructure. The use of green powders for fabricating TiO 2 and its homologous coatings is a rapid, low-cost, and energy-saving method.
研究领域:
材料科学
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陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Penghan Cai,Meng Xu,Ming Wei,Tian Zhang,Fei Yao
The SiO 2 –TiO 2 superhydrophilic coatings with photocatalytic activity via heat curing over a low temperature of 100 ℃ were fabricated without a high-temperature calcination process. The effects of the composite ratio of SiO 2 and TiO 2 on the stability of the sols, different treatment processes on the crystalline morphology of TiO 2 , and different solid contents of the sols on the coating properties were investigated. The surface morphology, optical properties and mechanical properties of the coatings were characterised by a water contact angle (WCA) analyser, UV spectroscopy, scanning electron microscopy (SEM) and multiple functional tests. The experimental results demonstrated that the SiO 2 –TiO 2 coating featuring both the intrinsic hydrophilicity of SiO 2 and photophilicity of TiO 2 had the WCA up to 3.5° and exhibited good photocatalytic, self-cleaning, anti-fogging, and mechanical properties.
研究领域:
材料科学
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表面化学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
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2025
·
IF 5.6
Yao Wang,Yamin Li,Bing Xu,Jiaying Ren,Kangkang Wang,Liang Zhang,Zhixian He,Wen Zhang,Shengnan Zhang
Titanium dioxide (TiO 2 ) ceramic coating, characterized by high thermal conductivity and remarkable chemical stability, leading to extensive application in providing electrical insulation within superconducting coils. However, the development of such ceramic insulation coatings to facilitate the preparation of high-performance superconducting magnets is extremely challenging, due to the complex heat treatment process of bismuth system high temperature superconductivity (HTS) wires. A novel strategy for fabricating a porous TiO 2 insulation layer with a three-dimensional (3D) reticular architecture based on highly dispersed ceramic slurry has been reported herein. To enhance the structural strength and oxygen permeability of the coating, polyethylene glycol and oligomeric ethyl silicate were introduced as modifiers to construct a grid-like porous framework. The as-prepared insulation coating possesses micron-sized pore and crack structures. The high-temperature stability of the insulation layer and its compatibility with the heat treatment of Ag-sheathed Bi-2223 wire was verified by measuring the effect of coating on the critical current. X-ray photoelectron spectroscopy (XPS) and energy-dispersive X-ray spectroscopy (EDS) show that this insulation coating with a thickness of approximately 25 μm can significantly inhibit the diffusion of metal sheath components and Bi. In addition, the TiO 2 insulation coating has also been successfully prepared on Bi-2223 tape by a reel-to-reel coating system. The results indicates that the TiO 2 insulation coating has great application potential as an insulation material for HTS magnets and provides new insights for the development of effective insulation material for Bi-2212 wires.
研究领域:
材料科学
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超导技术
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Wei Li,Xuerui Zhu,Xin Wang,Jie Liu,Baowen Liang,Tiesong Zheng,Jianlin Li
A new real-time monitoring method for alcohol content in spirit samples has been established on base of stable TiO 2 -coated porous silicon (PSi) interferometer. There is a linear relationship between the different alcohol contents in range of 10%–70% (v/v) and efficient optical thickness (EOT) or the reflection peak positions of the sensing film. The alcohol content of sample can be measured by the EOT or the reflection peak positions with the TiO 2 coated PSi interferometer. Both the straight TiO 2 -PSi and rugate TiO 2 -PSi can detect the alcohol contents, but the former displays a sensitivity of 2.911 nm ± 0.145/alcohol content unit (ACU) which is fifty times more sensitive than that of the latter. The developed method is a rapid, sensitive, on-line, and cost-efficient detection technique without sample pretreatment for alcohol content in spirit samples. The results detected by the developed method for alcohol content in nine spirit samples are agreement with that of traditional alcoholmeter method. The novel established method has a great potential in food industry, environment and health fields for monitoring alcohol content.
研究领域:
食品科学
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光学传感
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2023
·
IF 5.7
Weichao Wang,Liuying Wang,Gu Liu,Chaoqun Ge,Long Wang,Bin Wang,Jie Huang
Ti 3 SiC 2 exhibits considerable potential for high-temperature microwave absorption due to its relatively high melting point and conductivity. In this study, we successfully prepared Ti 3 SiC 2 /Al 2 O 3 -13%TiO 2 heterogeneous coatings through granulation and plasma spraying techniques. This investigation covered composition, microstructure, oxidation resistance, and a focused analysis of the temperature-dependent permittivity of the coatings. The augmentation in Ti 3 SiC 2 content leads to an escalation in the polarized component, consequently elevating susceptibility to dielectric dispersion. With rising temperature, polarization within the coatings gradually establishes, prompting a transition from polarization relaxation loss to conduction loss as the dominant dielectric loss mechanism. At 5 wt% Ti 3 SiC 2 content, the coating achieves an effective bandwidth of 2.2 GHz at 873 K, with a mere 1.4 mm thickness. Moreover, the coating maintains exceptional oxidation resistance below 700 °C. Ti 3 SiC 2 /Al 2 O 3 -13%TiO 2 coatings manifest as strong contenders for high-temperature microwave absorption applications, and plasma spraying emerges as a promising technique for fabricating high-performance microwave absorption coatings.
研究领域:
材料科学
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电磁学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Chaohui Guan,Jiefei Li,Tao Chen,Liang Lv,Junfeng Du,Shuai Zhang,Hang Wei,Haibin Chu
Developing high performance catalytic materials for the electro-oxidation of glycerol into specific value-added products is essential for glycerol valorization. Herein, we used the sol–gel method to coat the TiO2 layer with adjustable thickness on the surface of carbon nanotubes (CNTs), obtaining a unique morphology of porous sheath TiO2 wrapped CNTs (TiO2/CNTs). Subsequently, Pt nanoparticles were loaded onto TiO2/CNTs using the ethylene glycol reduction method. The prepared Pt–TiO2/CNTs catalyst achieves a glycerol conversion near 100% at 0.8 V vs. RHE and 60 °C for 10 h. Notably, the selectivity of tartronate reaches 52.5% after 24 h. Characterization results reveal that the dispersed Pt nanoparticles are embedded into the holes of the TiO2 porous sheath, fabricating abundant Pt–TiO2–CNT interface structures. The infusion of TiO2 shifts the center of the d-band upwards, and enhances the adsorption of the glycerate intermediate on Pt particles, which facilitates the further oxidation of glycerate to tartronate. This simple and efficient morphology control method provides a new strategy for glycerol valorization via electrocatalysis.
研究领域:
材料科学
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电化学
✓ 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）