JOURNAL OF SOLID STATE CHEMISTRY
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2019
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IF 2.291
Hongjun Fang,Yusong Pan,Minyun Yin,Linfeng Xu,Yuan Zhu,Chengling Pan
Ternary Ti 3 C 2 –OH/ln 2 S 3 /CdS composites with an efficient visible-light-driven photocatalytic performance have been prepared via a facile hydrothermal synthesis method. The photo-degradation experiments verified that Ti 3 C 2 –OH/ln 2 S 3 /CdS composite with a large surface area of 68.2 m 2 /g exhibited an enhanced photocatalytic activity and adsorption capacity towards Rhodamine B under visible light irradiation , which was higher than that of the naked CdS and ln 2 S 3 , respectively. Furthermore, Ti 3 C 2 –OH/ln 2 S 3 /CdS composite showed robust degradation efficiency for mixture dyes of RhB and Methyl Orange (MO), and its catalytic ability was superior to that of ternary GO/ln 2 S 3 /CdS composite. The trapping experiments for active species revealed that hole (h + ) and • O 2 − species played a critical role in the removal of organic pollutants. In summary, the enhanced photocatalytic performance of Ti 3 C 2 –OH/ln 2 S 3 /CdS photocatalyst was derived from an excellent charge carrier separation and transfer of Ti 3 C 2 –OH MXene and the synergistic effect between CdS and ln 2 S 3 which resulting in strong visible light response.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2022
·Vol. 414
·期 29
·8447-8461
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IF 4.478
Li Hui,Ma Chunxia,Gao Meng,Li Yong,Xie Lei,Zhao Dantong,Zhang Runhao,Zhang Guanhua,Li Wenhan,Rong Rong,Kong Biao
The inhomogeneous distribution of co-crystallized analytes and the traditional organic matrices as well as the intensive background interference in the low molecular weight range hinder the application of matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) in the analysis of small-molecular compounds. New two-dimensional material MXene (e.g., Ti 3 C 2 ) exerts better hydrophilicity, homogeneity and repeatability, and higher laser desorption efficiency, as well as less background interference than traditional organic matrices and other nanomaterial matrices such as titanium oxide, graphene, and gold nanostructures. This study was aimed to design Ti 3 C 2 matrix with abundant hydroxyls on its surface, enhance the stability of this hydroxyl-rich Ti 3 C 2 (Ti 3 C 2 (OH) x ), and evaluate the analytical performances of Ti 3 C 2 (OH) x -assisted laser desorption/ionization time-of-flight mass spectrometry (LDI-TOF-MS) for small-molecular natural compounds in complex samples. The developed Ti 3 C 2 (OH) x showed the distinct advantages such as minimum background interference, high peak intensity (~10 5 ), high salt (0.6 M) and protein (0.5 mg/mL) tolerance, good repeatability (relative standard deviation<20%), and good stability after eight months of storage. Ti 3 C 2 (OH) x -assisted LDI-TOF-MS analysis could be used to rapidly identify Artemisia annua (a world-famous traditional Chinese medicine) and quantify the contents of the main chemical ingredients (oxymatrine (OXY) and matrine) of Compound Kushen Injection (CKI). Interestingly, the content of OXY in CKI could be accurately quantified by Ti 3 C 2 (OH) x -assisted LDI-TOF-MS, and there was a good linear relationship ( R 2 −0.9929), a low limit of detection (400 pg), and a low limit of quantification (600 pg) of OXY. Taken together, the rapid and accurate analysis of small-molecular natural compounds in complicated samples could be achieved by the Ti 3 C 2 (OH) x -assisted LDI-TOF-MS analysis. Graphical abstract
研究领域:
分析化学
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中药学
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材料科学
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DOI
PubMed
高影响因子
MATERIALS RESEARCH BULLETIN
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2019
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IF 3.355
Hongjun Fang,Yusong Pan,Minyuan Yin,Chengling Pan
It is an effective method to explore full spectrum responsive photocatalyst for improving their photocatalytic activity. Herein, Ti 3 C 2 −OH/Bi 2 WO 6 :Yb 3+ , Tm 3+ composites were successfully synthesized via a facile hydrothermal method. The resultant Ti 3 C 2 −OH/Bi 2 WO 6 :Yb 3+ , Tm 3+ composites accompanied 2D/2D heterojunction with grid-like porous structure present a significant enhancement of photoactivity towards degradation of RhB under visible and NIR light irradiation. Specifically, the 0.2-Y/T-TB2.8 composite exhibits the best photocatalytic activity for RhB removal, in which the RhB degradation efficiency was 99.8% (Vis-NIR, 30 min), 91% (Vis, 30 min), and 48% (NIR, 160 min). The excellent photocatalytic activity of the composite is attributed to the grid-like porous structure endowing it with an enhanced RhB adsorption, favorable charge separation resulting from the outstanding conductivity of the Ti 3 C 2 −OH, and up-conversion mechanism via energy level transition of Yb 3+ /Tm 3+ . In addition, the radical capture experiments verified that the hole (h + ) plays the important role for degradation of RhB.
研究领域:
材料科学
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环境科学
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光化学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2019
·Vol. 30
·期 16
·14954-14966
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IF 2.195
Fang Hongjun,Pan Yusong,Yin Minyuan,Pan Chengling
Active co-catalysts have been extensively used for improving photocatalytic activity in semiconductor-based photocatalytic systems. Herein, 2D alkalized Ti 3 C 2 (Ti 3 C 2 -OH) nano-sheets were coupled with CdS via a facile electrostatic self-assembly strategy and combined with hydrothermal method to prepare Ti 3 C 2 -OH/CdS photocatalyst. The morphologies, crystal phases, optical and photoelectrical properties of the prepared photocatalysts were characterized by XRD, SEM, TEM, FTIR, PL, and EIS analysis, respectively. The photocatalytic degradation results verified that the photo-degradation performance of Ti 3 C 2 -OH/CdS photocatalyst (degradation of 97% RhB in 100 min) was obviously superior to that of pure CdS (degradation of 70% RhB in 100 min) and Ti 3 C 2 /CdS (degradation of 82% RhB in 100 min). The active species trapping experiments for Ti 3 C 2 -OH/CdS photocatalyst revealed that the superoxide radical ( · O 2 − ) and holes (h + ) were the predominant species for degradation of RhB. Furthermore, the Ti 3 C 2 -OH co-catalyst in the Ti 3 C 2 -OH/CdS composite not only played the role of promoting the effective separation of photo-generated electron–hole pairs, but also constructing strong connections with CdS semiconductor to establish heterostructure, ultimately enhancing the photocatalytic performance of the Ti 3 C 2 -OH/CdS photocatalyst.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
COMPOSITES PART B-ENGINEERING
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2018
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IF 4.92
Nadia Taloub,Abdelkhalek Henniche,Li Liu,Jun Li,Nahla Rahoui,Mohammad Hegazy,Yudong Huang
The pursuit of improving the performance of rigid-rod polymeric fibers using a new inorganic nano-materials and efficient methods is very attractive topic. The combination of the unusual properties of both materials could definitely produce an outstanding final product. Herein, we proposed a simple grafting method of a graphene-like titanium carbides Ti 3 C 2 (OH) 2 nanosheets (MXene) onto PIPD surface via covalent bond by using (3-Aminopropyl) triethoxysilane (APTES) as a bridging agent. The surface morphology and element compositions of PIPD fiber before and after grafting were characterized, and the effect of such treatment on the mechanical properties was also evaluated. The IFSS of the PIPD-Ti 3 C 2 (OH) 2 was highly increased by 61.54% because of the significant improvement the fiber/epoxy interaction and surface wettability . Though the tensile strength (TS) was slightly decreased by only 5%. Furthermore, the experiment results showed a great enhancement of UV and hydrothermal aging resistance of the grafted fibers comparing with untreated ones by 33% and 25% respectively.
研究领域:
材料科学
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聚合物复合材料
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纳米材料
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表面改性
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纤维增强
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）