Materials Today Bio
·
2025
·
IF 10.2
Haotian Tian,Liang Xu,Yang Qiao,Menghui Liu,Zihao Du,Wei Xu,Juan Wang,Xingliang Dai,Zhongyong Wang,Hongwei Cheng
Photothermal treatment (PTT) of glioma often requires a large number of animal models to enter the clinical stage, but the individual differences in animal models make the experimental results poor reproducibility. 3D bioprinting in vitro tumors made from hydrogels can provide efficient and accurate research models without sacrificing animals and avoiding species diversity. In this study, bioprintable and injectable TiO-loaded hydrogels were reported, which could be used for studying TiO NSs photothermal treatment of glioma. Results from the MTT kit showed that after photothermal treatment with TiO NSs, the survival rate of tumor cells in the 2D model was reduced to 35 ± 3. Rheological tests showed that the TiO-loaded hydrogels had good printability and injectability. 14 consecutive days of in vitro culture confirmed the feasibility of constructing in vitro tumors using bioinks composed of TiO-loaded hydrogels. In addition, in the photothermal therapy experiment of 3D bioprinting tumor models, the effective killing of tumor cells by TiO NSs confirmed the possibility of combining 3D bioprinted tumor models with photothermal therapy. After injecting TiO-loaded hydrogel in vivo , TiO NSs could effectively kill tumor cells by raising the temperature to 55 °C under near-infrared light irradiation for a short time. Bioprintable and injectable TiO-loaded hydrogel models are good for studying photothermal treatment of glioma, and 3D bioprinting tumor models have promising applications in photothermal therapy research for glioma.
研究领域:
生物医学工程
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肿瘤学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2020
·
IF 5.289
Zhijun Wang,Baoqiang Xu,Jia Yang,Bin Yang,Heng Xiong,Guobo Yang,Fengkang Wang
A route is present for preparing porous titanium scaffolds with open and interconnected pore morphology through calcium thermal in-situ reduction of TiO precursor. Titanium and dioxide titanium powders, with ammonium carbonate as the space holder, were used to prepare porous precursor whose main phase is TiO by a sintering process. Then calcium vapor was conduced to reduce the precursor and CaO was removed by leaching to obtain porous titanium structures. The morphology, pore structure, phase analysis of porous titanium precursor and porous titanium scaffolds were investigated by means of XRD, SEM and EDS. The porosity was observed by Archimedes method. By this route, the porous titanium with multi-gradient pore sizes ranging from a few microns to several hundred microns was formed. The porous titanium is of multi-gradient pore size distribution of 100 μm bigger, 10 μm∼100 μm and 10 μm smaller. The micro-pores on the pore walls increases connectivity between the macro-pores throughout the porous titanium interior. The porous titanium obtained by this method has a porosity of 50–65% and a titanium content more than 99%.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2020
·
IF 0
Ebrahim Ataeivarjovi,Yubing Liu,Zhigang Tang,Hao Ding,Dong Guo,Xiaofei Song,Guoxun Ben,Mengyue Zhou
The desorption process of CO2 absorbed by the hot-potash-alkali method was studied in this paper. In a traditional hot-potash-alkali process, the temperatures of KHCO3 aqueous solutions are high, moisture vaporization is serious, and energy consumption is high. We proposed that membrane desorption can be used instead of heating desorption and conducted relevant research. PDMS-PTFE-PVDF/PET was used as a composite membrane. The water evaporation considerably declined, and the decomposition conversion rate reduced to 25.5% as the equilibrium liquid-phase concentration decreased. Results show that the PDMS-PTFE-PVDF/PET composite membrane loaded with 1 wt % TiO(OH)2 nanoparticles can be used for membrane desorption, while the decomposition conversion rate of the KHCO3 aqueous solution decreased by only 4.2% after 10 cycles, and the effect was considerably improved. The comprehensive capture energy consumption was about 65% lower than that of the absorption-heating desorption process on account of the positive effect of TiO(OH)2 nanoparticles. Brief calculation, which is based on CO2 concentration tested by a gas analyzer and the linear fitting of the Arrhenius equation, demonstrates that the reaction activation energy can be reduced (Supporting Information).
研究领域:
环境科学
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材料科学
·
化学工程
✓ 已验证
DOI
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 31
·14646-14655
·
IF 3.3
Ruiyang Wen,Guoliang Shen,Jinmiao Zhai,Linghui Meng,Yunlong Bai
Acetylacetone titanium oxide (TiO(acac)2) was synthesized from acetylacetone and isopropyl titanate via a one-pot method. The catalyst's structure and morphology were characterized and analyzed using FT-IR, UV–vis, XRD, SEM, and laser particle size analysis. The prepared acetylacetone titanium oxide was used for the alcoholysis reaction of polyethylene terephthalate (PET), and the yield of bis(hydroxyethyl) terephthalate (BHET) obtained from the alcoholysis reaction was taken as the index. The optimal conditions for the alcoholysis reaction were determined using response surface methodology: 3 g of PET, a catalyst dosage of 0.467%, a temperature of 200.5 °C, a time of 3.77 h, and 13.50 mL of ethylene glycol, with a BHET yield of 96.41%. The model had good reliability. Finally, the reaction mechanism was speculated, and the catalyst was compared with other catalysts. The TiO(acac)2 catalyst has a good application prospect.
研究领域:
化学工程
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材料科学
·
催化反应
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Jiahao Zhang,Xuanyu Ren,Dongni Li,Zhiqiang Dong,Jiaqi Wang,Li Ren,Bing Xue,Fangfei Li
With deeper understanding of the harm of ultraviolet (UV) ray radiation , more and more attentions have been paid on developing UV shielding agents with better price-quality ratio. In this article, TiO₂ nanorods with three types of crystalline structures (anatase, brookite, and rutile) and their composites with natural illites were prepared by hydrothermal method under appropriate glycolic acid and pH environment. The resultant samples were analyzed by XRD , SEM , XPS , TEM, UV–vis spectrum and UV aging testing. The results confirm that both the aspect ratio and the crystalline structures of TiO₂ nanorods greatly affect the UV shielding performances of TiO₂ films. Compared with anatase and brookite, rutile TiO₂ nanorods with the best aspect ratio (around 3.5) display the best UV shielding performance. Furthermore, after loaded by natural illite micro-sheets, the illite-TiO 2 composites display better UV shielding performance than pure TiO₂ nanorods , due to the physical reflection effect and interfacial coupling effect of illite micro-sheets. When the loading amount ratio reaches to 1:1, the illite-TiO 2 composite loaded with rutile TiO₂ nanorods display the best UV shielding performance. And such coating is confirmed to be greatly helpful in protecting cotton fabrics from fractures caused by UV aging. The best illite-TiO 2 composite can significantly increases the retention tensile strength of cotton fabrics by 47 % against UV radiation . The resultant novel illite-TiO 2 composite provides a promising method to product better UV shielding agents for practical applications, which displays lower cost, nearly non-toxic, better aqueous dispersion, controlled UV–vis spectral characteristics , and higher UV shielding performances.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2025
·
IF 8
Junxian Huang,Kezhen Yan,Min Wang,Kaixin Shi,Qiang Wu,Yuwei Chen
The growing demands for better mechanical properties, aging resistance, and environmental sustainability in asphalt binders, along with concerns over automotive exhaust emissions, necessitate the development of more advanced pavement materials. In response to these challenges, this study presents a novel G@T nanocomposite designed to improve both the mechanical performance and environmental functionality of asphalt. The nanocomposite was synthesized by loading nano-titanium dioxide (n-TiO 2 ) onto graphene (GR) using a hydrothermal method, followed by its incorporation into asphalt. The originality of this work lies in the application of G@T to enhance UV resistance and evaluate the road performance of asphalt. Furthermore, molecular dynamics simulations were used to assess the dispersion behavior and feasibility of G@T in asphalt, while laboratory tests were conducted to evaluate the modified asphalt's mechanical properties. The degradation efficiency of automobile exhaust gases (NO, HC, and CO) was also evaluated under simulated real-world light conditions. The results showed that G@T-modified asphalt (G@T/MA) significantly enhanced high-temperature rutting resistance, low-temperature crack resistance, and fatigue performance compared to physically mixed systems. The uniform distribution of n-TiO 2 on the GR surface increased active sites and reduced electron-hole recombination rates, leading to higher photocatalytic efficiency. Overall, G@T nanocomposite improves both the mechanical properties and environmental benefits of asphalt, providing a promising solution for the development of multifunctional pavement materials.
研究领域:
土木工程
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环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Shuaiqi Gong,Jinchen Fan,Volkan Cecen,Cunping Huang,Yulin Min,Qunjie Xu,Hexing Li
Photocatalysts that can not only harvest broader solar irradiation (from UV to near infrared (NIR) light region) but also achieve higher solar-to-hydrogen conversion efficiency are critical for solar hydrogen economy. In this research, we report a ternary bridge chain W 2 N/C/TiO photocatalyst for the first time to realize an efficient and stable visible and NIR light driven water splitting. This photocatalyst can realize overall water splitting using bifunctional mechanism with hydrogen (H 2 ) generation part and oxygen (O 2 ) generation part. The optimal H 2 and O 2 generation rates based on the W 2 N/C/TiO photocatalyst are 2.01 and 1.11 μmol g -1 h −1 under the irradiation of NIR light (λ > 700 nm). In this new photocatalyst, W 2 N and TiO were integrated into nanosized carbon fibers that serve as H 2 and O 2 evolution active sites. And the hydrogen apparent quantum efficiency (AQE) for W 2 N/C/TiO composite photocatalyst for NIR light water splitting can reach as high as 2.14% at 700 ± 15 nm. This research indicates that W 2 N/C/TiO photocatalyst can be effective under broaden (Ultraviolet, Visible and Near-Infrared) light. Combining interfacial and electrochemical characterizations, we have found that W 2 N/C/TiO photocatalyst can efficiently separate charges through the interfaces between C/W 2 N and C/TiO and harvest low energy photons in NIR region. Because of the bridge chain structure among W 2 N, C, and TiO electron transfer from W 2 N to TiO via C can promote charge separation and impede the recombination of photo-generated electron and hole pairs. It is therefore that this bridge chain structured W 2 N/C/TiO nanofiber photocatalyst can be a promising material for overall water splitting due to the capacity to utilize a broader solar spectrum.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Jianghao Xing,Yuqi Yang,Wei Zhang,Jianqin Yan,Haisheng Qian,Jiqing Hao,Liang Cheng,Xianwen Wang
Tumors have become the biggest obstacle to human health, and there are various treatment methods at present. Photothermal therapy (PTT) is usually ineffective and does not inhibit tumor progression due to the inability of the lasers to penetrate deeply. Therefore, most existing studies chose a 1064 nm laser with stronger penetrating power; meanwhile, studies have shown that the inclusion of harmful free radicals can significantly improve the antitumor efficacy. Herein, TiO nanosheets (NSs) were creatively prepared and encapsulated with an alkyl radical generator {2,2′-azobis[2-(2-imidazoline-2-yl)propane] dihydrochloride, [AIPH]} in sodium alginate (ALG) hydrogel for effective tumor killing by PTT and pairing with dangerous free radicals. TiO NSs were obtained by the liquid-phase exfoliation method, together with AIPH, which were in situ coencapsulated multifunctional hydrogels formed by the combination of Ca2+ and ALG. This ALG hydrogel could enrich TiO NSs and AIPH at the tumor site for a long time, and through the excellent photothermal properties of TiO NSs, AIPH could slowly and effectively generate alkyl radicals at the tumor site, which, in turn, gave it a better antitumor effect compared with that of TiO NSs in the deep hypoxic environment of the tumor. The AIPH + TiO + ALG hydrogel has distinctive anticancer capabilities based on the results of both in vivo and in vitro experiments. This material also has good biosafety. By combining PTT and free radical treatment, this work provides a novel therapeutic method to achieve oxygen-independent free radical production and enhance therapeutic efficacy.
研究领域:
纳米技术
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生物医学工程
·
癌症研究
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Ziyu Tang,Chuanlin Mou,Yadong Li,Shihao Chen,Xianmin Yang,Xu Ding,Hongbo Deng,Linyuan Wang
Here, we report a controllable strategy for fabricating monodispersed microspheres composed of poly(butyl methacrylate) (BMA) and silane-modified Cu/Ni-embedded metal-organic framework (MOF)-TiO₂ composites (denoted as BMA@Cu/Ni@MOF-TiO₂ microsphere) for efficient photocatalytic degradation. Monodispersed oil-in-water (O/W) emulsion templates are prepared by a microfluidic device, which contain silane-modified Cu/Ni@MOF-TiO2 in oil phase. Utilizing benzildimethyl ketal (BDK) as a photoinitiator, porous microspheres can be obtained through a straightforward photopolymerization process initiated by ultraviolet light. When the concentration of the surfactant polyglycerol polyricinoleate (PGPR 90) is 14% (w/v) and the crosslinker trimethylolpropane trimethacrylate (TMPTMA) is 12% (w/v), the BMA@Cu/Ni@MOF-TiO2 microspheres have good monodispersity, and the average diameter is 180.7 μm and coefficient of variation (CV) is 3.64%. When silane-modified Cu/Ni@MOF-TiO2 loading is 0.4% (w/v), the removal rate to methylene blue (MB) is up to 96.2% in 20 min, which is higher than that of powdered (86.6%). Under the optimal conditions, the removal rate of methylene blue reached 99.3% within 50 minutes. Moreover, after 5 cycles of testing, the degradation efficiency remained above 97.94%,, which strongly demonstrated the reusability of BMA@Cu/Ni@MOF-TiO2 microspheres. The photocatalytic mechanism involves the generation of electron-hole pairs in Cu/Ni@MOF-TiO2 under light irradiation, which react with O2 to produce reactive oxygen species (ROS) to degrad MB. The characterization results of XPS, and FTIR show that the silane-modified Cu/Ni@MOF-TiO2 is successfully loaded into the microspheres. BMA@Cu/Ni@MOF-TiO2 microspheres have a specific surface area of 5.962 m2/g and a specific volume of 2.491 cm3/g, providing sufficient diffusion channels and active sites for MB dyes. Therefore, BMA@Cu/Ni@MOF-TiO2 microspheres have excellent recyclability, high stability and attractive photocatalytic degradation efficiency, and show potential application prospects in the future treatment of dye wastewater.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Chunjing Shi,Menghang Wang,Zhenyu Zhang,Hongxiu Zhou,Pengfei Hu,Longhua He,Xingzhong Liu,Huaxiang Cai,Zehong Pang
Ceramic dentures differ from those produced by additive manufacturing, and manual polishing is employed for ceramic dentures due to their hard-brittle nature, complex shapes, and thin-walled structures with thicknesses less than 1.0 mm. This presents challenges for the medical and manufacturing industries. To address these challenges, we prepared a novel ternary composite of Fe 3 O 4 @TiO 2 @PB (Prussian blue) to establish a photo-Fenton system. This composite enhances the transport of photogenerated electrons and facilitates the generation of radicals, demonstrating high photocatalytic activity for the polishing and degradation of pollutants without the need for sacrificial agents. Meanwhile, Fe 3 O 4 @TiO 2 @PB was utilized to develop a new photocatalytic magnetorheological polishing slurry. The slurry consisted of sorbitol, hydrogen peroxide, Fe 3 O 4 @TiO 2 @PB, and ceria (0.025 wt. %). After polishing, the surface roughness (Sa) decreased from 5.538 to 0.081 μm, representing a reduction of 98.54 % compared to the pristine surface. Due to photogenerated hydroxyl radicals, the Si-OH and Li-OH bonds can be created on the surface of the ceramic dentures, facilitating defects removal. Before and after polishing, the ceramic dentures enhanced the inhibition rates of Escherichia coli and Staphylococcus aureus from 50 % to 74 % and from 49 % to 80 % over the course of one day, respectively. Through irradiation with simulated sunlight, Fe 3 O 4 @TiO 2 @PB generates electrons, holes, and hydroxyl radicals, leading to the degradation of amoxicillin (AMOX) and polysorbate (PS20) by up to 99 % within 60 min. Additionally, Fe 3 O 4 @TiO 2 @PB was successfully separated and reused from the developed slurry. Therefore, the designed and developed novel ternary composite, Fe 3 O 4 @TiO 2 @PB, achieves photocatalysis, photodegradation, and recycling, offering new solutions for the medical, manufacturing, and environmental industries.
研究领域:
材料科学
·
环境科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Omega
·
2017
·
IF 0
Dong Wang,Chong Huang,Jianqiao He,Xiangli Che,Hui Zhang,Fuqiang Huang
Oxygen stoichiometry is critical for physical properties, but it is hard to precisely control in many multivalent transition metal oxides, for example, cuprate superconductors, magnetoresistive manganite oxides, and TiOx (x < 2). We have developed a new method to synthesize rock-salt TiO in a sealed and evacuated quartz tube by using KClO4 as the only oxygen source to react with elemental Ti (in a Ti/O molar ratio of 1:1). The stoichiometric titanium monoxide (TiO) exhibits an enhanced superconductivity transition temperature (Tc) of 5.5 K, which is superior to the reported results of 0.5–2.3 K. The new synthetic method provides an excellent way to prepare stoichiometric oxides, and the enhanced superconductivity of TiO may initialize the restudy of the transport properties of Ti-containing oxides.
✓ 已验证
DOI
International Journal of Electrochemical Science
·
2025
·
IF 2.4
Mian Zhao,Mengjiao Li,Keqiang Ding,Ying Bai,Xiaoxuan Liang,Yiqing Chen,Jiawen Bao,Hui Wang
A novel finding, that the electrochemical performance of titanium dioxide (TiO 2 ) can be significantly promoted through treating the mixture containing TiO 2 and cuprous iodide (CuI) thermally, is presented for the first time in this work. Firstly, a mixture containing TiO 2 and CuI is prepared carefully, in which the molar ratio of Ti and Cu is 3:1. Secondly, the obtained mixtures are thermally treated at 360 °C, 420 °C and 480 °C in air for 2 h, respectively, producing sample a, b and c. As revealed by the XRD and XPS results, TiO 2 and CuO are the principal components of all the thermal treatment products. Above all things, when being utilized as anode materials of lithium ion batteries (LIBs), all the thermal treatment products exhibit superior battery performances relative to that of the pure TiO 2 , for instance, the initial discharge capacities of sample a, b and c at 0.1 A g -1 are about 276.1, 422.7 and 294.9 mAh g -1 , respectively, being about 1.25, 1.91 and 1.33 times higher than that of pure TiO 2 (221.0 mAh g -1 ). Particularly, the high rate performances of all the thermal treatment products, especially sample b, are still better than the pure TiO 2 . For example, the discharge capacity of sample b at 1.0 A g -1 after 100 cycles is tested to be 84 mAh g -1 , being about 1.5 times higher than that of pure TiO 2 (56 mAh g -1 ). The reduction in the charge transfer resistance and the increase in the cyclic voltammetry peak area are analyzed to be the major reasons endowing all the thermal treatment products especially sample b a greatly promoted battery performance. Showing the fact, that thermally treating the mixture having TiO 2 and CuI is a practical technique to significantly promote the battery performance of TiO 2 , is the principal dedication of this preliminary work.
研究领域:
材料科学
·
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）