JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2017
·
IF 4.233
Yue Xu,Junlu Sheng,Xia Yin,Jianyong Yu,Bin Ding
Exploiting high-added-value textiles equipped with multiple functionalities like ultraviolet (UV) resistance, waterproofness, and thermal-moisture comfort is facing tremendous demand by a more discerning consumer market. However, the major challenge is to realize the equilibrium among the multifunction. Herein, a new attempt of fabricating superhydrophobic electrospun polyacrylonitrile (PAN)/polyurethane (PU)/titanium dioxide (TiO 2 ) nanofibrous membranes has been tried, and the membranes exhibited multifunction of UV resistance, waterproofness and breathability by coating modification with 2-hydroxy-4- n -octoxybenzophenone (UV531) and fluorinated acrylic copolymer (FAC). TiO 2 NPs as inorganic blocker and UV531 as organic absorber were utilized to impart the excellent double UV resistant function for the modified nanofibrous membranes. The hydrophobic coating with FAC endowed the pristine membranes with enhanced superhydrophobic wettability and the advancing contact angle was 152.1°. Regulating the addition amount of TiO 2 NPs, the UV531 and FAC concentration, the multiple functionalities of the modified PAN/PU/TiO 2 were systemically optimized: robust tensile strength (14.6 MPa), good ultraviolet protection factor of 1485, modest waterproofness (62 kPa), and moisture breathability (12.9 kg m −2 d −1 ). The equilibrium among the multifunction of the as-prepared membranes indicated their diverse possibilities can be used in various applications, including high-altitude garments, protective clothing, covering materials, self-cleaning materials, and other medical products.
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DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Juan Wang,Aoxiong He,Hao Li,Yi Yang,Zhengguang Wen,Yutong Wang,Zixue Shao,Yuan Chen,Jan-Michael Albina
The development of high-performance lithium-ion battery (LIB) anode materials is essential for addressing growing energy demands. Traditional graphite anodes, limited by a theoretical capacity of 372 mAh/g. In this study, we synthesized core-shell TiO 2 @Mn 2 O 3 microspheres by coating Mn 2 O 3 onto anatase TiO 2 microspheres. The TiO 2 @Mn 2 O 3 anode exhibited an increased specific capacity of 486 mAh/g after 100 cycles and retained 204.8 mAh/g even after 500 cycles at a current density of 2 C. Furthermore, first-principles calculations revealed that the TiO 2 @Mn 2 O 3 heterostructure narrowed the band gap, improved electronic conductivity, and enhanced lithium-ion storage and transport properties. The synergistic effects between TiO 2 and Mn 2 O 3 contributed to superior cycling stability, higher capacity retention, and enhanced rate capabilities. Our work establishes a promising strategy for developing high-capacity, durable anode materials to advance the performance of next-generation LIBs, catering to the ever-growing demand for efficient energy storage solutions.
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Xinjian He,Yuyan Zhuang,Danhong Gao,Hongwei Liu,Jintuo Zhu,Sheng Huang
Carbon monoxide is a colorless, odorless gas that can cause irreversible effects on the brain if inhaled in excess. Accurate measurement of carbon monoxide is very important for human health. The current carbon monoxide sensors work with long response time and narrow detection range. Therefore, in this work, TiO 2 was coated on perovskite nanocrystals Cs 3 Cu 2 I 5 by solution method to obtain high performance carbon monoxide gas sensitive material Cs 3 Cu 2 I 5 /TiO 2 nanocrystals. Moreover, high precision and anti-interference measurement of carbon monoxide was realized by combining with machine learning. The carbon monoxide sensor based on Cs 3 Cu 2 I 5 /TiO 2 has a short response/recovery time of 3.8/17.5 s and a sensitivity of 0.36 at 10 ppm. Then, an intelligent classification algorithm is used to quickly identify the concentration of carbon monoxide gas, and the recognition accuracy is as high as 99.5 %, which is higher than that of traditional sensitivity determination of gas concentration methods, due to the fact that machine learning involves multiple features of the electrical response curve, rather than the single feature of traditional sensitivity determination methods. Finally, the sensor was integrated into the self-rescuer for coal mine to realize the intelligent opening in the presence of CO, and improved the rescue efficiency. We believe that this sensor will be promising in the field of carbon monoxide, and the idea of using machine learning to intelligently recognize gas concentrations can be extended to other gas sensors.
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DOI
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Ting Yang,You Zuo,Sijia Yan,Hang Zhang,Huanlin Zhang,Lei Ling,Baichuan He,Jiaqi Lu,Shu Cai
MnO 2 cathodes have been the focus of extensive research for aqueous zinc-ion batteries, owing to their inherent safety, environmental sustainability, and substantial theoretical capacity. However, manganese dissolution and slow kinetics during cycling lead to poor cycle stability and rate performance. In this study, a TiO 2 interphase was constructed on the δ-MnO 2 cathode by chemical liquid-phase deposition, which effectively inhibited the dissolution of manganese and improved the wettability of the electrode in the electrolyte, thus increasing the rate of ion transport at the interface, especially H + . Consequently, better cycle stability and faster electrochemical kinetics are produced for the δ-MnO 2 cathode, with a capacity retention of 87.6 % after 1000 cycles at 10 A g -1 and a specific capacity of 310 mAh g -1 at 0.2 A g -1 . This cost-effective and efficient method of constructing interphase to enhance electrode performance is scalable and provides insights into enhancing the performance of other manganese-based cathodes for aqueous zinc-ion batteries.
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Rushun Xue,Lingmin Yu,Man Gong,Chuantao Zhang,Senlin Li,Shanglin Yang,Xuefeng Xiao,Ning Nan,Chun Li,Xinhui Fan
CuO is a typical p-type semiconductor with the advantage of narrow bandgap, making it a gas sensing material for detecting CO gas at lower operating temperatures.However, the poor response value limits its application. As a classical wide-band gap n-type gas sensing metal oxide semiconductor, TiO 2 has the advantages of high response to CO. However, high operating temperature becomes the big obstacle to overcome. Therefore, sensitive CO detection at lower temperature will be achieved by integration of CuO with TiO 2 . In this paper, in-situ two step hydrothermal method was used to prepare CuO/TiO 2 vertical bilayer nanorod arrays grown in situ. The gas sensing results show that the response value of the CuO/TiO 2 vertical bilayer nanorod arrays is 6.1 times (14.9, 300 ppm) higher than that of single CuO nanotentacle arrays (2.1, 300 ppm), and the operating temperature is reduced to 100 °C compared with pure TiO 2 nanorod arrays (360 °C). This strategy provides a new idea for the fabrication of CO gas sensors with high response and low operating temperature.
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Tonghe Xing,Annan He,Zhiming Du,Yu Zhang,Yuxin Luo,Zhiyu Huang,Mengqi Wang,Zhicheng Shi,Aixin Tong,Sijie Qiao,Xiaohong Liao,Jie Bai,Heng Pan,Zihui Liang,Wei Ke,Hao Yu,Fengxiang Chen
Silk fiber, as a luxurious textile raw material, is widely used in the textile industry due to its excellent mechanical properties and wearing comfort. However, the poor (ultraviolet, UV) light stability of silk affects its further application in high-end textiles, fashionable apparel, and smart materials. Although surface modification can endow the excellent UV resistance of silk fibers, it often reduces its comfort property. Herein, a laminated ultrathin Al2O3/TiO2 coating with a total thickness of 120 nm is fabricated on the surface of silk fiber via a modified atomic layer deposition (ALD) technique. The tenacity of ALD-coated silk can maintain 61.1% of its original value after exposure to intense UV light (640 mW/cm2) under high temperature (>200 °C) for 6 h, which is far superior to other work that has been reported. This can be attributed to the synergistic effect of the reflection of UV light by the multilayer film barrier, the strong oxidizing free radicals by the Al2O3 layer in the innermost layer, and thermal shield of laminated ultrathin Al2O3/TiO2 film. ALD-coated silk fabrics can also demonstrate a multicycle laundering durability, thermal and chemical stabilities, and flame retardancy. More importantly, the wearing comfort of the modified silk has no obvious change. This method provides principle and technical guidance in high-performance and multifunctional fibers and devices.
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DOI
PubMed
高影响因子
Materials Research Express
·
2018
·Vol. 5
·期 8
·085506
·
IF 1.151
Wang Ye,Jin Xiang,Feng Huang,Dingyong Zhong
Titanium dioxide (TiO2) is a widely used electron transport material in organic-inorganic hybrid perovskite solar cells (PSCs). In order to reveal the influence of an additional mesoporous TiO2 (mp-TiO2) layer on fabricating large-area perovskite solar cells using TiO2 as the electron transport layer, we have conducted a comprehensive study on the solution-processed PSCs with or without an additional mp-TiO2 layer. Photoemission spectroscopy measurement indicates that, compared with the compact TiO2 (cp-TiO2) layers, the mp-TiO2 layers possess a slightly larger work function, which will improve the electron extraction efficiency at the perovskite-TiO2 interface. The PSCs with an additional mp-TiO2 layer exhibit better performances than those with only a cp-TiO2 layer. They suffer from a smaller efficiency loss when enlarging the device area from 0.16 to 1.44 cm2 and exhibit a better long-term stability. About 89% of the initial efficiency is retained after keeping in dry air for 1000 h for the device with an active area of 1.44 cm2. For both cases, increasing the active device area is beneficial to long term stability, photoluminescence measurement indicates that this is result from the degradation of perovskite films starts at the margin of the cells. Our work implies the indispensable role of the additional mp-TiO2 layer for optimizing the performances of large-area PSCs using TiO2 as the electron transport layer.
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高影响因子
Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 29
·15217-15226
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IF 8.867
Zhongbin Pan,Jiwei Zhai,Bo Shen
Polymer nanocomposites with high energy density have potential applications in advanced electronics and electric power systems. The inevitable electrical mismatch between nanofillers and the polymer matrix could compromise the energy storage capability and dielectric properties of the polymer nanocomposites. Herein, novel core–double-shell structured BaTiO3@TiO2@Al2O3 nanofibers (BT@TO@AO NFs) were prepared via a one step method, and were incorporated into poly(vinylidene fluoride) (PVDF). The novel design of gradually varying the multilayer hierarchical interface was advantageous to alleviating the local electric field and electric current density intensification in the filler/polymer system. As compared with the nanocomposites loaded with BT NFs and BT@TO NFs, the nanocomposites filled with BT@TO@AO NFs exhibit much decreased dielectric loss, enhanced breakdown strength, and suppressed leakage current densities. Simulations were carried out to verify that the new core–double-shell structure significantly enhances the breakdown strength and energy density. As a result, the nanocomposite films loaded with 3.6 vol% BT@TO@AO NFs show a maximum energy storage density (Ue) of 14.84 J cm−3 at 450 MV m−1, which is about twelve times greater than that of biaxially oriented polypropylene (BOPP) (≈1.2 J cm−3 at 640 MV m−1). Moreover, the nanocomposite exhibits a superior power density of 4.7 MW cm−3 and an ultra-fast discharge speed of 0.37 μs. This research opens up a convenient and effective way for designing high-performance dielectric polymer nanocomposites.
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DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2019
·
IF 1.901
Yiqing Zeng,Yanan Wang,Yahan Meng,Fujiao Song,Shule Zhang,Qin Zhong
Herein, we compared the catalyst formation process of three Pt/TiO 2 catalysts prepared by impregnation (PtTi–I), deposition precipitation (PtTi–D) and photo-deposition (PtTi–P) to investigate its effect on oxgyen activation and toluene oxidation activity. The encapsulation of TiO 2 on Pt particles induced by high temperature strengthened the metal–support interaction (MSI) but inhibited the activation of oxygen over PtTi–I catalyst, thus it showed the poorest activity in toluene oxidation. Since the selective deposition of Pt on certain face of TiO 2 during photo-deposition process, PtTi–P exhibited stronger MSI and higher activity although it possessed much larger Pt particles than PtTi–D.
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DOI
高影响因子
Desalination and Water Treatment
·
2016
·
IF 1.272
Guangxin Zhang,Bin Wang,Zhiming Sun,Shuilin Zheng,Shushu Liu
Three kinds of diatomites as catalyst carriers were adopted to prepare supported TiO2 catalysts by a typical hydrolysis–deposition method. The prepared composites were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, N2 adsorption–desorption, scanning electron microscopy transmission electron microscopy, UV–vis diffuser reflectance, and chemical oxygen demand. The photocatalytic properties of composites were determined using rhodamine B, methyl orange, and methylene blue as target pollutants under UV light irradiation. A comparative study on the photocatalytic properties of composite catalysts was carried out. It is indicated that the catalytic performance of TiO2/diatomite is significantly influenced by the physicochemical properties of diatomite supports. Compared with pure TiO2, the TiO2/diatomite composites exhibited smaller crystalline size of TiO2 and better dispersibility, which induced higher specific surface area and better photo-degradation efficiency. The highest activity of the photocatalyst should be attributed to the acid-activated support, which provided more active sites for the degradation reaction. Besides, the durabilities of catalysts were also investigated. The experimental results indicated that the prepared composite is a promising material for the wastewater treatment for its good photocatalytic property and reusability.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2020
·Vol. 44
·期 25
·10352-10358
·
IF 3.288
Danlin Bu,Na Li,Yu Zhou,Hengyu Feng,Fei Yu,Chunxia Cheng,Ming Li,Linghan Xiao,Yuhui Ao
N-Halamine-based antibacterial materials are widely used due to their excellent characteristics. However, the N–Cl bonds in N-halamine-based materials are not stable under UV light irradiation so that they are difficult to recover and reuse. Here, a kind of N-halamine-immobilized Fe3O4@SiO2@TiO2(F@S@T-Cl) nanoparticles were prepared. In addition, the UV stability and regeneration capacity were also studied after variable time exposure to UV light. The results showed that nanoparticles have great antibacterial properties against Staphylococcus aureus and Escherichia coli. Meanwhile, the N–Cl bond in the nanocomposite showed outstanding storage stability under UV light irradiation and good regeneration ability; the material can realize cyclic utilization and solve the problem of secondary pollution of the antibacterial material. It provides a broader application prospect for the recyclable N-halamine antibacterial material.
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高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Li Shao,Heng Liu,Weiping Zeng,Caiyun Zhou,Dan Li,Liang Wang,Yeqian Lan,Feigao Xu,Gousheng Liu
It was found that, among these chitosan@TiO 2 (Cs@TiO 2 ) composites calcined at different temperatures (200, 300, 400, 500 and 600 °C), the composite calcined at 300 °C (Cs@TiO 2 -300) showed the best adsorption and photocatalytic activity . To eliminate the limitation of recycling catalyst nanoparticles , the PDMS-SiO 2 -Cs@TiO 2 composites with hydrophobic surfaces were prepared for dye degradation by embedding Cs@TiO 2 -300 nanoparticles into a PDMS-SiO 2 sol-gel system. More concretely, with pumice stone as the support of composites, the experiment was carried out in a reaction bed. When pumice stones were used as supports for PDMS-SiO 2 -Cs@TiO 2 composites, compared with its initial concentration, the concentration of dye solution decreased by 36% after 30 h of simulated sunlight irradiation. Additionally, the degradation efficiency of dyes hardly decreased after five cycles. The optical property and surface structure of PDMS-SiO 2 -Cs@TiO 2 were characterized by UV–Vis DRS and XPS , respectively. It is noteworthy that the UV–Vis DRS results indicated that the light absorption range of both Cs@TiO 2 -300 composites and PDMS-SiO 2 -Cs@TiO 2 composites had been broadened to the visible light region. Moreover, the XPS results indicated the existence of nitrogen (N) doped titanium on the surface of PDMS-SiO 2 -Cs@TiO 2 composites.
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高影响因子
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