Scientific Reports
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2019
·Vol. 9
·期 1
·1-7
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IF 4.011
Li Zhen,Peng Ying,Xia Xingyu,Cao Zhe,Deng Yuqing,Tang Bin
A Sr-based metal-organic framework (MOF) is introduced as ketoprofen carrier to form a comprehensive system for treating osteoarthritis (OA), and the drug loading amount and release rate is investigated. Structural characterization of the samples showed that Sr/PTA-MOF had good crystal morphology and structure, and chemical and thermal stability. Ketoprofen was successfully loaded on the MOF carrier, which had been identified by high performance liquid chromatography (HPLC) and thermogravimetric analysis (TGA). The release experiment manifested that more than 90% of ketoprofen released from Sr/PTA-MOF after 24 h, and ketoprofen delivery was mainly governed by the Higuchi model. Furthermore, cytotoxicity experiment manifested that synthesized MOF carrier had no poisonous effect on OA chondrocytes, which provided a preliminary foundation for the realization of comprehensive treating OA.
研究领域:
材料科学
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医学
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药理学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Shiyou Yu,Zhenge Yue,Xin Wang,Siyao Zhang,Zhuo Zhou,Lan Zhang,Yongqiang Ma
In the present study, we constructed an electrochemical sensor using three materials, namely, cerium dioxide (CeO 2 ) composite platinum (Pt) and polymer 3-amino-5-mercapto-1,2,4-triazole (PTA), prepared by hydrothermal method, to detect xanthines and uric acid. Scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Fourier infrared spectroscopy (FT-IR) were used to characterize the morphology, elemental composition, and structure of materials. The results demonstrated that the PTA/CeO 2 @Pt composites were prepared. The electrochemical behavior of xanthines and uric acid on PTA/CeO 2 @Pt composite electrodes was assessed by cyclic voltammetry (CV) and differential pulsed voltammetry (DPV). The results demonstrated that the dropping amount was 20 µL under a phosphoric acid buffer solution (pH 6). The peak current of xanthine (XA) demonstrated two good linear relationships with concentration, the linear regression equation was I XA = 0.3265C XA + 8.1967 R 2 = 0.994 in the concentration range of 10–138 µmol/L, whereas it was I XA = 3.9884C XA + 51.661 R 2 = 0.992 in the concentration range of 139–330 µmol/L. The detection limit was 10.36 × 10 –7 M. The freshness of fish meat was evaluated, and the correlation analysis between evaluation results and results of xanthine detection in fish meat by PTA/CeO 2 @Pt electrochemical sensor demonstrated that r = 0.945 and P < 0.01 had a good correlation. The sensor could be used to determine the xanthine content in fish to reflect the freshness of fish, thus displaying good application prospects.
研究领域:
生物化学
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食品科学
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分析化学
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产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2019
·
IF 3.375
Siquan Xu,Donghui Pan,Yuanfeng Wu,Ningning Xu,Hongmei Yang,Lijing Gao,Wenqi Li,Guomin Xiao
It is highly desirable to develop a heterogeneous catalyst that is both efficient and recyclable for the simultaneous acquisition of 5-hydroxymethylfurfural (HMF) and furfural from lignocellulose feedstock. Herein, a series of (x)SnCl2-PTA/β catalysts (x = 10, 15, 20, and 25 wt %) were prepared and characterized using ICP-AES, XRD, SEM, N2 adsorption–desorption, XPS, NH3-TPD, and Py-FTIR techniques. It was found that (20)SnCl2-PTA/β catalyst having a suitable acid density, acid ratio, and texture structure contributed to the furan compound formation from carbohydrate components of wheat straw. Under optimal conditions, up to 71% of furfural and 30% of HMF were simultaneously obtained from wheat straw in a water/tetrahydrofuran biphasic system, while the byproducts formed were identified as soluble C4–C15 molecules and insoluble humins. More importantly, the (20)SnCl2-PTA/β catalyst was still capable of providing moderate furan compounds yields after four cycles, and its catalytic performance could be partially restored by simple reimpregnation.
研究领域:
化学工程
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可再生能源
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产品关联
DOI
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Fan Ye,Liwei Shen,Shi Liu,Huanyu Liu,Xinyuan Zhang,Zejun Zhang,Ying Yang,Xuening Feng,Yuqi Tang,Dong Xiang,Yuanzhu Mi,Xuemin Yan
This work aims to prepare two new amphiphilic and interfacial active gemini ionic liquids to treat crude oil and investigates its demulsification mechanism. Tetraethylene glycol was pretreated with thionyl chloride and used as a linker to connect succinimide or phthalimide , and then reacted with dodecyl benzene sulphonic acid to obtain the corresponding amphiphilic and interfacial active gemini ionic liquid STA or PTA, respectively. 1 H nuclear magnetic resonance spectroscopy ( 1 HNMR) and Fourier-transform infrared spectroscopy (FTIR) was used to determine the chemical structures. The demulsification tests showed the demulsification efficiency with 150 mg/L of STA or PTA at 60 °C for 30 min was 99.89% and 99.79%, respectively. Furthermore, the demulsification mechanism of STA and PTA were studied and the prominent demulsification ability of STA and PTA were attributed to the better interfacial activity and amphipathy which could destroy the asphaltenes interfacial film. These results showed that STA and PTA had excellent demulsification efficiency, which promised application in petroleum industry .
研究领域:
石油化学
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界面化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2024
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IF 4.1
Tuodong Xiong,Wanxiong Yong,Na Chen,Guodong Fu
Photochromic materials have recently attracted widespread attention in the research of smart windows because they can function without additional devices. In this study, an innovative photochromic thermal insulating hybrid film based on a polyurethane matrix was prepared via a one-pot method, incorporating phosphotungstic acid. The film demonstrates excellent transparency, good mechanical strength, and a significant modulation of the solar spectrum, transitioning from colorless to dark blue under sunlight without the need for additional electron donors. This photochromic behavior is reversible and reproducible without degradation, resulting in a transmittance variation of up to 71 % at 550 nm, which is the most sensitive to the human eye, and more than 50 % modulating performance in 1800 ∼ 2500 nm. In addition, thermal insulation experiments proved that the smart window device prepared by the film could achieve a reduction of 9.3 °C under daylight. Overall, the photochromic films prepared using the one-pot method show good performance involving mechanical strength, efficient photochromic response, broad spectral range modulation, high coloring efficiency and cycling stability, and have promising applications in energy-saving buildings, anti-counterfeiting and smart displays.
研究领域:
材料科学
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能源工程
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光学工程
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产品关联
DOI
高影响因子
Journal of Environmental Sciences
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2023
·
IF 6.9
Chaomin Jia,Jianbing Wang,Huijiao Wang,Sichao Zhu,Xiaohui Zhang,Yuxiang Wang
Water fluoride pollution has caused non-negligible harm to the environment and humans, and thus it is crucial to find a suitable treatment technology. In this study, La-Fe@PTA adsorbent was synthesized for the defluoridation of mine water. The results showed that the optimum conditions for defluoridation by La-Fe@PTA were pH close to 7.0, the initial F − concentration of 10 mg/L, the dosage of 0.5 g/L and the adsorption time of 240 min. Compared with SO 4 2‒ , Cl ‒ , NO 3 ‒ , Ca 2+ and Mg 2+ , CO 3 2‒ and HCO 3 ‒ presented severer inhibition on fluoride uptake by La-Fe@PTA. The adsorption process fits well with the pseudo-second-order kinetic model and Freundlich model, and the maximum adsorption capacity of Langmuir model was 95 mg/g. Fixed-bed adsorption results indicated that fluoride in practical fluorinated mine water could be effectively removed from 3.6 mg/L to less than 1.5 mg/L within 130 bed volume (BV) by using 1.5 g La-Fe@PTA. Furthermore, the adsorbent still had good adsorption capacity after regeneration, which confirms the great application potential of La-Fe@PTA as a fluoride ion adsorbent. The mechanism analysis showed that La-Fe@PTA adsorption of fluorine ions is a physicochemical reaction driven by electrostatic attraction and ion exchange.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
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2023
·
IF 4.6
Yuping Gai,Junbo Hu,Wei Deng,Wenshuo Xie,Xiang Li,Jingjing Zhang,Dewu Long,Shanlin Qiao,Fei Jiang
Summary. Electrochemical water decomposition as a crucial approach for the gradual growth of renewable energy has attracted extensive attention. Metal-organic frameworks (MOFs) which benefit from ultra-high specific surface area, controllable nanostructures, and excellent porosity have been widely used as high activity catalyst for the decomposition of water by electrochemical means. Herein, the composition and morphology of metal–organic framework nanoclusters with bimetallic Co/Fe-incorporated PTA/FDA nanoclusters is designed for efficient and durable OER electrocatalysts, including CoFe-BTC/PTA, CoFe-BTC/FDA, and CoFe-PTA/FDA. The crystal structure of MOF materials is composed of alternating organic hydrocarbon BTC, PTA, or FDA and inorganic metal oxide layer. Co and Fe interact as central atoms, joining BTC, PTA, or FDA ligands to form a highly symmetric MOF structure. The electronic structures and active sites of various metals are different, and the insertion of iron atoms plays a certain role in the regulation of their electronic structures. CoFe-PTA/FDA shows significant OER overpotential (1.525 V vs. RHE) reached 10 mA cm-2, with 62.85 mV dec-1 for Tafel slope and pretty conspicuous stability (72 hours of continuous testing). The DFT calculation results show coordination unsaturated metal atom is the primary active center of these electrocatalytic reaction, and the coupling effect caused by adding Fe is the key to adjust the electrocatalytic activity.
研究领域:
材料科学
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电化学
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Kunming Zhao,Bo Wang,Yanli Xiao,Xinyu Zhao,Wenshuo Zhao,Xiaoxiao Liu,Jingyi Guan,Lebin Wang,Guohua Wu,Xuyang Zhang,Nana Liu,Xiangwei Wang
MXene-based infrared camouflage materials have garnered significant interest due to their intrinsic low emissivity. However, their practical application in marine environments is largely hindered by MXene’s susceptibility to oxidation. To overcome this limitation, we propose a protective strategy involving poly(tannic acid) (PTA), which is grafted onto MXene via hydrogen bonding and coordination interactions. This PTA layer acts as a barrier against H 2 O and O 2 ingress while enhancing the interfacial adhesion between adjacent MXene nanosheets, thereby improving the structural integrity of the composite film. Density functional theory (DFT) calculations reveal a strong affinity between PTA and MXene, confirming that both chemical interactions and physical barrier mechanisms contribute to the significantly improved oxidation resistance. Importantly, the functionalized MXene/PTA composite retains the low infrared emissivity inherent to pristine MXene. After 3 days in a simulated marine environment, the MP-5 (5 wt% PTA-modified MXene) film showed only a slight increase in emissivity, from 0.15 to 0.17. Even after 20 days of exposure to high temperature and humidity, the composite maintained a low emissivity of 0.22, demonstrating exceptional durability in thermal camouflage performance. This work offers a feasible and effective approach for designing environmentally stable MXene-based materials suitable for long-term infrared camouflage in marine settings.
研究领域:
材料科学
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纳米技术
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红外技术
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防腐蚀
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海洋工程
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2026
·
IF 7.8
Pengcheng Qi,Zhenhao Xiao,Wenjing Song,Jiawei Xia,Weizuo Li,Xinmin Li,Guangyu He,Dafang He,Haiqun Chen
The escalating atmospheric CO 2 concentration necessitates its conversion into highvalue- added products like cyclic carbonates, yet existing catalysts face challenges such as poor recoverability (homogeneous ionic liquids, ILs) and insufficient activity (monometallic metal–organic frameworks, MOFs). To address this, a series of bimetallic Ni x /Zn 1-x -PTA MOFs with different Ni/Zn molar ratios were synthesized via a solvothermal method, and then composite catalysts (Ni x /Zn 1-x -PTA@Mim-6) were prepared by impregnating the MOFs with Mim-6 ILs. This work provides a promising approach for efficient and sustainable CO 2 capture and conversion by integrating the advantages of bimetallic MOFs (high porosity, recyclability) and ILs (high catalytic activity). Characterizations via FT-IR, XRD, TEM, STEM-EDS, and TGA confirmed the successful synthesis, well-defined structure (e.g., nanoflower-like morphology of Ni 0.2 /Zn 0.8 -PTA MOFs), homogeneous elemental distribution, and good thermal stability of the composites. Catalytic tests showed that Ni 0.2 /Zn 0.8 -PTA@Mim-6 exhibited optimal performance: under solvent-free and co-catalyst-free mild conditions, the yield and selectivity of styrene carbonate both exceeded 99%, which was significantly superior to monometallic Ni-PTA@Mim-6 (46% yield) and Ni 0.2 /Zn 0.8 - PTA MOFs with co-catalyst (76% efficiency). The catalyst also demonstrated excellent recyclability (no significant activity loss after 5 cycles, conversion 69% and selectivity 99%) and universality for various epoxides (e.g., high yields for 1,2-butylene oxide and epichlorohydrin). Mechanistic studies revealed that the synergistic effect of multiple active sites—Lewis acid sites (unsaturated Ni/Zn) for epoxide activation, Lewis base sites (O in Ni-O/Zn-O) for CO 2 activation, and Br - from Mim-6 for ring opening—lowered the reaction energy barrier (activation energy 35.80 kJ/mol) and enhanced catalytic efficiency.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Sirui Liu,Qianjin Ye,Qin Li,Zhanzhen Ma,Ran Yang,Di Li,Deli Jiang
Carbon nitride (CN) has received extensive interest due to their good stability and unique conjugated structures. However, the weak charge separation ability and poor active sites lead to undesirable photocatalytic CO 2 reduction activity. Here, we successfully prepare all-organic PTA/V C -CN S-scheme heterojunction photocatalysts by integrating CN with carbon vacancies (V C -CN) and perylene tetracarboxylic acid (PTA) for photocatalytic CO 2 reduction. The introduced carbon vacancies can act as electron trapping sites, break the symmetry structure of CN and facilitate in-plane photogenerated carrier separation and transfer of CN, while the coupling of PTA with V C -CN via π-π interaction to form a built-in electric field further speeds up the interfacial charge transfer, thereby collectively enhancing the separation and transfer efficiencies of photogenerated carriers. Moreover, the high reduction capability of V C -CN with carbon vacancies as possible active sites and wide-spectrum light absorption of PTA render the S-scheme heterojunction with high photocatalytic activity. The optimum PTA/V C -CN photocatalyst exhibits a high CO production rate of 47.91 μmol g −1 h −1 , which is about 10.7 and 4.2 times higher compared to those of CN and V C -CN, respectively. This work provides a new strategy for developing all-organic CN-based S-scheme heterojunction photocatalysts used in CO 2 conversion.
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产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Jiongxin Wu,Ying Chen,Li Zhang,Xinxin Sheng
In this study, MXene was functionalized with poly (tannic acid) to prepare MXene@PTA nanosheets . Subsequently, zinc ions (Zn(II)) was introduced into the MXene@PTA to obtain MXene@PTA-Zn(II) hybrids. The successful preparation of the hybrids was confirmed by FTIR, XPS , and SPM analysis. The composite coatings containing MXene@PTA-Zn(II) were then prepared and subjected to tribology and electrochemical tests. The results of the tribology test showed that 4-PMZ/WEP coating (with 0.4 wt% MXene@PTA-Zn(II)) has a uniform and shallow wear trace after 30 min of friction, and its wear rate decreased by 85.29 % in comparison to the blank WEP coating. The electrochemical tests demonstrated 4-PMZ/WEP coating has excellent corrosion resistance , which maintains a high |Z 0.01 Hz |(9.0 × 10 8 Ω·cm 2 ) after 42 days of immersion in the 3.5 wt% NaCl solution. These findings indicate that MXene@PTA-Zn(II) can effectively enhance the anti-corrosion properties and tribological properties of WEP coatings. As a result, this work provides new ideas for applications of MXene in the domain of metal protection.
研究领域:
材料科学
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表面工程
·
腐蚀与防护
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产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2019
·
IF 3.858
Ruili Xiao,Yini Pan,Jie Li,Lingyi Zhang,Weibing Zhang
The highly selective enrichment of phosphopeptides is vital for the research of phosphorylated proteomics. Herein, a magnetic bimetallic metal-organic framework (MOF) with Zr-O and Ti-O clusters (denoted as Fe 3 O 4 @SiO 2 @(Zr-Ti-PTA) 15 ) has been fabricated using a layer-by-layer assembly approach via the coordination of metal ions with carboxyl groups. The composite has large specific surface area (135.84 m 2 g −1 ) and superparamagnetism (62.03 emu g −1 ). Compared with single-metal cluster MOF, the Fe 3 O 4 @SiO 2 @(Zr-Ti-PTA) 15 showed higher binding capacity (100 mg g −1 ), enhanced affinity, better selectivity (n β-casein : n BSA = 1 : 2000) and sensitivity (0.3 fmol/μL) towards phosphopeptides due to the combination of the dual metal clusters. Furthermore, the Fe 3 O 4 @SiO 2 @ (Zr-Ti-PTA) 15 was successfully applied to extracting phosphopeptides from non-fat milk tryptic digest, and 10 mono-phosphopeptides and 22 multi-phosphopeptides were captured. As a result, 1294 phosphopeptides (476 multi-phosphopeptides and 818 mono-phosphopeptides) were selectively extracted and detected from tryptic digest of rat brain extract, indicating its great application potential in phosphorylated proteomics research.
研究领域:
分析化学
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蛋白质组学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）