CHEMICAL ENGINEERING JOURNAL
·
2017
·
IF 6.216
Chunling Li,Yangchao Sun,Meng Cheng,Shuangqing Sun,Songqing Hu
We present a simple approach for the fabrication of a full-thickness super-hydrophobic composite coating consisted of modified TiO 2 nanoparticles and polysiloxane resin. Scanning electron microscope (SEM), fourier transform infrared spectrometer (FTIR), contact angle meter and a simple self-made device were employed to characterize the surface morphologies, chemical compositions, contact angle and sliding angle of the modified TiO 2 nanoparticles and composite coating, respectively. Results show that for both the modified TiO 2 nanoparticles and the as-prepared composite coating the contact angle and sliding angle of is up to 152° and 0°, respectively. In addition, due to the coating design of full-thickness super-hydrophobicity, the composite coating also exhibited good thermal stability, abrasion resistance and corrosion resistance in the thermo-gravimetric analysis (TGA) experiment, abrasion test and immersion test, respectively.
研究领域:
材料科学
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表面化学
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产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL RESEARCH
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2020
·
IF 0.593
Chunping Xiao,Lili Ji,Dehui Li,Louqun Wang,Jing Yang
Photoelectrochemical biofuel cells can convert light and chemical energy into electrical energy using a dye-sensitized titania (TiO2) fluorine-doped tin oxide photoanode and a platinum-coated fluorine-doped tin oxide cathode. TiO2 of the photoanode serves both as a support for dyes and as an electron-transporting medium, the structure of which can limit electron trapping and charge transporting and then affect the performance of the photoelectrochemical biofuel cells. TiO2 nanotube array films have been shown to enhance the efficiencies of both charge collection and electron injection, and hence a vertically aligned TiO2 nanotube array is investigated as a conductor for the tetrakis(4-carboxyphenyl)porphyrin dye to construct a new two-compartment photoelectrochemical biofuel cell. The photoelectrochemical biofuel cell containing the TiO2 nanotube array photoanode yields a short-circuit (Isc) current of 110 μA and an open-circuit (Voc) potential of 1010 mV. In contrast, the photovoltaic parameters, Isc and Voc of the photoelectrochemical biofuel cell with the mesoporous TiO2 nanocrystal fluorine-doped tin oxide photoanode, are 96.96 μA and 740 mV, respectively. Photovoltaic measurements show that the maximum incident photon-to-collected electron conversion efficiency was 58% at 430 nm through the spectral range (400–800 nm) for the photoelectrochemical biofuel cell with the TiO2 nanotube array fluorine-doped tin oxide photoanode. These results revealed that the TiO2 nanotube array had great potential for the photoelectrochemical biofuel cells.
研究领域:
电化学
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纳米技术
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可再生能源
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材料科学
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DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
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2014
·Vol. 21
·期 3
·1343-1349
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IF 5.696
Zhian Zhang,Qiang Li,Shaofeng Jiang,Kai Zhang,Yanqing Lai,Jie Li
Graphical Good conduct : A core–shell hybrid architecture hollow carbon nanofiber@titanium dioxide (HCNF@TiO 2 ) composite has been successfully prepared as an improved conductive matrix for encapsulating sulfur as a cathode material for lithium–sulfur batteries. This hybrid composite exhibited improved electrochemical performance over the original HCNF–S composite (see figure). A hollow carbon nanofiber hybrid nanostructure anchored with titanium dioxide (HCNF@TiO 2 ) was prepared as a matrix for effective trapping of sulfur and polysulfides as a cathode material for Li–S batteries. The synthesized composites were characterized and examined by X-ray diffraction, nitrogen adsorption–desorption measurements, field-emission scanning electron microscopy, scanning transmission electron microscopy, and electrochemical methods such as galvanostatic charge/discharge, rate performance, and electrochemical impedance spectroscopy tests. The obtained HCNF@TiO 2 –S composite showed a clear core–shell structure with TiO 2 nanoparticles coating the surface of the HCNF and sulfur homogeneously distributed in the coating layer. The HCNF@TiO 2 –S composite exhibited much better electrochemical performance than the HCNF–S composite, which delivered an initial discharge capacity of 1040 mA h g −1 and maintained 650 mAh g −1 after 200 cycles at a 0.5 C rate. The improvements of electrochemical performances might be attributed to the unique hybrid nanostructure of HCNF@TiO 2 and good dispersion of sulfur in the HCNF@TiO 2 –S composite.
研究领域:
材料科学
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能源存储
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2016
·Vol. 5
·期 4
·1406-1414
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IF 8.262
Dong Wei,Jun Ji,Dandan Song,Meicheng Li,Peng Cui,Yaoyao Li,Joseph Michel Mbengue,Wenjia Zhou,Zhijun Ning,Nam-Gyu Park
The structure of the perovskite solar cells (PSCs) is either mesoporous or planar. Here, a novel structure for highly efficient and stable PSCs is proposed, i.e., an embedded structure, which combines the advantages of the mesoporous and planar structures. The embedded structure utilizes a TiO2 nanoparticle embedded perovskite (CH3NH3PbI3) film as the absorption layer. The presence of TiO2 nanoparticles in the perovskite film could improve the electron extraction, and promote the formation of a compact perovskite layer with large grains. Consequently, the performance of the PSCs is significantly improved with the efficiency increasing from 16.6% for the planar structure to 19.2% for the embedded structure, which is the best performance of the MAPbI3-based PSCs. Furthermore, the TiO2 embedded perovskite films present better long-term stability than the pristine perovskite films, and the corresponding PSCs, which have no other chemical modifications, also show excellent stability with efficiency approaching 80% (for average) or 90% (for the best) after being exposed to air for 28 days without encapsulation.
研究领域:
光伏学
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材料科学
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纳米技术
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可再生能源
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DOI
高影响因子
LANGMUIR
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2025
·
IF 3.9
Zewei Huang,Yingjie Wang,Meiying Ye,Heyong Cheng
Two TiO2 inverse opal films (F-TiO2-IOF and CO-TiO2-IOF) were synthesized on glass substrates by a limited planar rapid evaporation method, which was time- and reagent-saving, and it was easy to control their shape. The CO-TiO2-IOF displayed a smoother mophology and better photocatalytic efficiency and stability than F-TiO2-IOF. Over 95% of 5 mg L–1 rhodamine B (RhB) was degraded within 120 s in the IOF-modified microreactors. A higher photocatalytic efficiency could be achieved with the synergistic catalysis of H2O2 and CO-TiO2-IOF, based on which the online monitoring of RhB was realized within 2 min in the IOF-modified photocatalytic microreactor integrated with the flow cell of a UV–vis spectrophotometer. Other nitrogen-containing dyes like tartrazine and indigo carmine were also degraded in CO-TiO2-IOF-modified microreactors with degradation rates of 83–95%.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2020
·
IF 9.038
Fei Miao,Yanfeng Liu,Mingming Gao,Xin Yu,Pengwei Xiao,Mei Wang,Shuguang Wang,Xinhua Wang
Nowadays, microplastic pollution has been brought into focus for its hazards to aquatic life. However, researches on the electrocatalytic treatment for efficient degradation of microplastics are still insufficient. Herein, an electro-Fenton like (EF-like) technology based on TiO 2 /graphite (TiO 2 /C) cathode was put forward to degrade polyvinyl chloride (PVC), a typical microplastic in water. It exhibited a remarkable performance on PVC degradation via cathodic reduction dechlorination and hydroxyl radical (O H) oxidation simultaneously. Besides, the effects of reaction temperature and initial PVC concentration were investigated. Under optimal conditions, the dechlorination efficiency of PVC reached 75 % after potentiostatic electrolysis at -0.7 V vs. Ag/AgCl for 6 h. The intermediate products were explored during the degradation of PVC microplastics. The surface morphologies and molecular weight of PVC changed accordingly. Based on these results, a possible degradation process for PVC was proposed. This work demonstrated that such a heterogeneous EF-like technology using TiO 2 /C cathode was hopefully to provide an eco-friendly method for microplastic wastewater treatment.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
Journal of Materials Chemistry B
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2022
·Vol. 10
·期 20
·3808-3816
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IF 7.571
Yanping Xu,Jie Lin,Xiaoxia Wu,Xiawei Xu,Dinghu Zhang,Yujiao Xie,Ting Pan,Yiwei He,Aiguo Wu,Guoliang Shao
Circulating tumor cells (CTCs) can be the seeds of tumor metastasis and are closely linked to cancer-related death. Fast and effective detection of CTCs is important for the early diagnosis of cancer and the evaluation of micrometastasis. However, the extreme rarity and heterogeneity of CTCs in peripheral blood make sensitive detection of CTCs a big challenge. In this paper, a TiO2-based surface-enhanced Raman scattering (SERS) bioprobe is reported for the first time with outstanding ultrasensitive specificity, excellent stability of the signal, and good biocompatibility for the detection of CTCs. The TiO2 NPs were encoded with alizarin red (AR) and functionalized with reduced bovine serum protein (rBSA) and folic acid (FA). The limit of detection (LOD) for 4-mercaptobenzoic acid (4-MBA) and AR molecules adsorbed on the TiO2 SERS substrate is 5 × 10−7 M. The designed TiO2-based SERS bioprobe can be effectively utilized in detecting four diverse types of cancer cells in rabbit blood, which shows good sensitivity of the SERS detection technology. Finally, precise targeting of CTCs based on the SERS bioprobe with the function of fluorescence imaging is also confirmed by the fluorescence colouration test. This work offers a novel strategy for CTC detection and the development of non-noble metal semiconductor-based SERS platforms for tumor diagnosis.
研究领域:
生物医学工程
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癌症诊断
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
·
IF 8.6
Xu Yin,Wei Li,Hongwei Zhu,Jiatian Yu,Kajia Wei,Zhifeng Gao,Yonghao Zhang,Haoming Chen,Liankai Gu,Weiqing Han
With the wide application of reverse osmosis technology in municipal wastewater treatment, the abundance of generated reverse osmosis concentrates (ROC) has become a significant challenge for water ecosystems. In this work, a fabricated TiO 2 -BNTs/SnO 2 -Sb reactive electrochemical membrane (REM) was used to dispose of municipal ROC wastewater. The effects of the TiO 2 nanotube array (TiO 2 -BNTs) interlayer, current density, initial pH and flow rate on the COD removal of ROC were investigated. In addition, the 3D-EEM fluorescence spectra showed that humic acid-like substances and soluble microbial byproduct-like substances could be removed effectively. GC-MS analysis indicated that most organics, including aldehydes, phenols, ethers, nitriles, ketones, silanes and alcohols, were eliminated after treatment. The REM also exhibited prominent membrane anti-fouling performance in high-salinity wastewater. After 20 cycles, the transmembrane pressure (TMP) was only slightly changed (within 3 kPa) compared to that of the first cycle. Two key parameters, i.e., service lifetime and energy consumption, were investigated in ROC treatment. The service lifetime reached 31350 h (3.5 years, 20 mA cm −2 ) in 0.5 M NaCl solution and 40390 h (20 mA cm −2 , 4.6 years) in actual wastewater, which is highly competitive with previously reported electrodes. Energy consumption reached 10.5 kWh·kg COD −1 in actual ROC wastewater, which is more acceptable compared with current reported electrochemical technologies and exhibits great application prospects for TiO 2 -BNTs/SnO 2 -Sb REMs.
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产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
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2020
·
IF 5.977
Yanni Luo,Xuecai Tan,David J. Young,Quanyou Chen,Yuehui Huang,Defen Feng,Chenhao Ai,Yan Mi
In photoelectrochemical sensor (PEC sensor), sensitivity and selectivity are two essential factors which are determined by photosensitive of materials and identification of elements. Herein, a novel PEC aptamer sensor for streptomycin-specific detection was developed, with which the visible-light-active TiO 2 /BiOI/BiOBr heterostructure and aptamers were employed as photoactive material and bio-identification elements, separately. The combination of an appropriate amount of TiO 2 with BiOI/BiOBr enhanced the photocurrent response, and thus is beneficial to the construction of PEC sensors. In addition, the one-pot synthesis of TiO 2 /BiOI/BiOBr has the advantage of being environmentally-friendly. Under optimized conditions, the photocurrent response of aptamer/TiO 2 /BiOI/BiOBr/ITO is linear with SRT concentration from 0.05 to 150 nM, and the detection limit (S/N = 3) is as low as 0.04 nM. This novel PEC sensing strategy provided an ultra-sensitive sensor with high selectivity and stability for SRT detection.
研究领域:
生物传感技术
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材料科学与工程
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 14
·6538-6545
·
IF 8.867
Zhu Xiong,Haibo Lin,Yun Zhong,Yan Qin,Tiantian Li,Fu Liu
To overcome the surface instability of traditional polymeric membranes especially with superwetting behaviour, a robust superhydrophilic surface was fabricated with nano-TiO2 inlaid on a hierarchical polylactide (PLA) ultrafiltration membrane via a spin coating process. Distinctly different from most previously reported nano-particle involved polymeric membranes, both the micro-/nano-architecture of the PLA membrane and the size matched nano-particle assembly constructed the robust superhydrophilic interface mimicking coral tentacle predatory behavior. The rigid surface based on the flexible polymeric membrane with the hierarchical architecture showed robust superhydrophilicity and underwater superoleophobicity even after long-term water washing treatment, which was also verified by the morphology, contact angle, XPS and adhesive force in contrast to smooth membranes. The as-prepared PLA membrane showed excellent separation performance for varieties of oil/water mixtures with a robustly high permeate flux (above 950 L m−2 h−1 under 0.1 MPa) and oil rejection (above 99%) even after 10 cycles of operation. Besides, the superhydrophilic PLA membrane exhibited outstanding anti-protein fouling properties. The PLA membrane showed relatively high BSA and ink rejection as well as water flux recovery and continuous separation stability due to rigid interface strengthening effects. The unique interface combination strategy between functional nanoparticles and polymeric membranes provided a window of opportunity for constructing robust polymeric membranes for advanced applications e.g. oil/water separation, ion exchange, in membrane catalytic reactors etc.
研究领域:
材料科学
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环境工程
·
纳米技术
·
膜技术
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产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2023
·
IF 5.7
Weigui Fu,Yaowei Liu,Jianchao Liu,Bojun Zhang,Ju Cheng,Runhong Du,Meixiu Sun,Yiping Zhao,Li Chen
Design and preparation of membranes with ultrahigh separation performance and antifouling property for oil-in-water (O/W) emulsions remains challenging. In this study, a high flux mullite/TiO 2 ceramic composite membrane was prepared via multi-precipitation of TiO 2 on a whisker mullite hollow fiber support synthesized by combining phase inversion and high-temperature sintering techniques. The results showed that the generated whisker mullite structure improved the permeation flux, and the micro-nano structured TiO 2 functional layer endowed the membrane surface with superhydrophility and stability. The retention of the optimal composite membrane (M20T13) that was soaked in the titanium solution 20 times for 13 min each time for the O/W emulsions like n-hexane, toluene and engine oil maintained over 98 %, and the flux after 6 h filtration was 668.34 L·m −2 ·h −1 , 487.25 L·m −2 ·h −1 and 258.66 L·m −2 ·h −1 , respectively, much higher than that of the optimal substrate (F3A1, mass ratio of fly ash: Al 2 O 3 = 3:1). Moreover, the flux recovery rate of M20T13 was much higher than that of F3A1 after chemical backwashing. This work manifests great potential in O/W treatment fields.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Kai Xu,Shuang Yuan
Urban heat islands and the rising energy consumption of dense cities call for scalable passive cooling solutions. Conventional green roofs offer ecological and thermal benefits but are constrained by the optical and physiological limits of natural leaves. Here, we report a bionic green roof material that replicates key leaf-inspired functions while enabling effective thermal regulation through engineered optical and hygroscopic properties. The material features a TiO 2 –LiCl/PVA composite film on a reflective aluminum substrate, combining high solar reflectance, strong sky-facing emissivity, and low downward thermal emission for efficient radiative cooling. The LiCl-doped PVA film is capable of reversible moisture absorption–desorption, emulating transpiration-driven evaporative cooling without irrigation or stomatal limitation. Outdoor experiments confirm significant reductions in roof and indoor temperatures under both sunny and cloudy conditions, while simulations predict 12.7%–23.1% reductions in annual cooling energy consumption in typical hot urban climates. The bionic green roof also exhibits excellent durability and self-cleaning capability, demonstrating a robust, maintenance-free approach for climate-adaptive and energy-efficient architecture. These results highlight a scalable material-based strategy that addresses key limitations of traditional vegetated roofs by integrating radiative and evaporative cooling, offering a practical route toward low-carbon and climate-adaptive architecture.
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）