Pharmaceutics
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2021
·Vol. 13
·期 9
·1518
·
IF 6.321
Mengting Duan,Wei Fan,Bing Fan
Mesoporous calcium-silicate nanoparticles (MCSNs) are excellent biomaterials for controlled drug delivery and mineralization induction. In this study, MCSNs were loaded with low-dose silver ion (Ag+) and Triton X-100 (TX-100) as the M-AgTX to achieve both enhanced antibacterial properties and low cytotoxicity for dentin disinfection. The physicochemical property, biocompatibility, infiltration ability into dentinal tubules, anti-bacterial ability against both planktonicEnterococcusfaecalis(E. faecalis) and its biofilm on dentin, effects on dentin microhardness and in vitro mineralization property were systematically investigated. Results confirmed that the MCSNs and M-AgTX nanoparticles showed typical morphology of mesoporous materials and exhibited sustained release of chemicals with an alkaline pH value over time. M-AgTX also exhibited excellent biocompatibility on MC3T3-E1 cells and could eliminate 100% planktonicE. faecalisafter 48-h treatment. On dentin slices, it could enter dentinal tubules by ultrasonic activation and inhibit the growth ofE. faecalison dentin. M-AgTX could completely inactive 28-dayE. faecalisbiofilm. TEM confirmed the destruction of cell membrane integrity and Ag+infiltration into bacteria by M-AgTX. Besides, dentin slices medicated with M-AgTX nanoparticles displayed an increased microhardness. After being immersed in SBF for 7 days, apatite crystals could be observed on the surface of the material tablets. M-AgTX could be developed into a new multifunctional intra-canal medication or bone defect filling material for infected bone defects due to its sustained release profile, low cytotoxicity, infiltration ability, enhanced anti-bacterial and mineralization features.Keywords:mesoporous;nanoparticle;Enterococcus faecalis;silver;Triton X-100;root canal disinfection
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2015
·
IF 2.037
Shengshan Bi,Tao Jia,Kang Zhao,Xianyang Meng,Jiangtao Wu
The density data for 2-ethylhexyl acetate, 2-methoxyethyl acetate, and diethyl succinate were reported. The density measurements were conducted with a high-pressure vibrating-tube densimeter over 9 isotherms at (283.15 to 363.15) K and 16 isobars at (0.1 to 100) MPa. The uncertainty of each obtained datum was estimated, and the expanded uncertainties of density measurements with a confidence level of 0.95 (k = 2) of density measurement for 2-ethylhexyl acetate, 2-methoxyethyl acetate, and diethyl succinate are 0.1 %. The experimental densities were correlated with the Tait-type equation, and the absolute average percentage deviations were 0.010 %, 0.009 %, and 0.011 % for 2-ethylhexyl acetate, 2-methoxyethyl acetate, and diethyl succinate, respectively. In addition, the isothermal compressibility and the isobaric thermal expansivity were derived from the Tait-type equation.
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MICROCHIMICA ACTA
·
2021
·Vol. 188
·期 2
·1-9
·
IF 5.833
Senosy Ibrahim Abdelhai,Zhang Xin-Zhong,Lu Zhi-Heng,Guan Xiao-Yu,Yang Zhong-Hua,Li Jian-Hong,Guo Hao-Ming,Abdelrahman Talat Mahmoud,Mmby Mohamed,Gbiliy Asmaa
Fe 3 O 4 @MIL-100 (Fe)/PEI are used for the first time as an adsorbent material for the extraction of pesticide residues (epoxiconazole, flusilazole, tebuconazole, and triadimefon) from food matrices. The adsorbent proposed (Fe 3 O 4 @MIL-100(Fe)/PEI) was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), field emission scanning electron microscopy (FE-SEM), thermogravimetric (TG) analysis, and vibrating sample magnetometer (VSM) techniques to evaluate the properties of the sorbent. Then, the Fe 3 O 4 @MIL-100 (Fe)/PEI was employed for the quantification of the four triazole fungicides in fruits and vegetables (apple, orange, tomato, cabbage, and cucumber) using HPLC-UV for separation and detection. During the extraction process, the main parameters such as amount of adsorbent, extraction time, pH value, ionic strength, eluting solvent, and eluting volume were optimized. Under the optimum conditions, good linearity of this method was observed for all analytes, with correlation coefficients ( R 2 ) ≥ 0.9908. The limits of detection (LODs) ranged from 0.021–3.04 μg kg −1 . The extraction recoveries of the four triazole fungicides varied from 73.9 to 109.4% with relative standard deviations (RSD) in the range 0.5 to 6.2%. Compared with other MOFs, the modification of Fe 3 O 4 @MIL-100 (Fe) with PEI shows high efficient adsorption due to the combined benefits of MIL-100 (Fe) and PEI. The material is easily synthesized, has good stability, and is of low cost.
Graphical abstract
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CARBOHYDRATE POLYMERS
·
2019
·
IF 6.044
Chao Duan,Chaoran Liu,Xin Meng,Kun Gao,Wanli Lu,Yanling Zhang,Lei Dai,Wei Zhao,Chuanyin Xiong,Wenliang Wang,Yishan Liu,Yonghao Ni
3D Hydrogel is one of the most popular adsorbents for water remediation due to its excellent concentration/ adsorption capacity. However, it remains a challenge to use the hydrogel alone for treating complex wastewater. In this work, we designed and fabricated a versatile bio-based hybrid hydrogel consisting of Ag NPs@ MIL-100(Fe) photocatalysts and guar gum (GG) via facile blending and self-crosslinking. The hybrid hydrogel integrated with multifunctions of dye adsorption and degradation, oil/water separation and antibacterial properties, thus enabling its applications in complex wastewater remediation process. The presence of Ag nanoparticles (Ag NPs) not only enhanced the photocatalytic activity of MIL-100(Fe), but also imparted the antibacterial activity of Ag NPs@MIL-100(Fe)/ GG hydrogel. Particularly, the bio-based GG hydrogel scaffold showed excellent injectable, remodeling, and self-healing properties, which enabled an effective oil/water separation ability (silicone oil, cyclohexane and canola oil) and facilitated the recyclability/sustainability of the nano-photocatalyst powders. This novel multifunctional 3D hybrid hydrogel provides new opportunities for wastewater remediation purpose.
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Nano Research
·
2017
·Vol. 11
·期 2
·1109-1123
·
IF 7.354
Liang Ruowen,Huang Renkun,Ying Shaoming,Wang Xuxu,Yan Guiyang,Wu Ling
A simple, facile in situ reduction approach is reported for the synthesis of Pd-nanoparticle-decorated phosphotungstic acid (PTA)-MIL-100(Fe) nanocomposites (Pd-H 3 PW 12 O 40 -MIL-100(Fe), denoted Pd-PTA-MIL-100(Fe)). During the in situ synthesis, PTA is encapsulated into the matrix of MIL-100(Fe) and serves as a UV-switchable reducing agent, resulting in highly dispersed Pd NPs. Using the photocatalytic degradation of pharmaceuticals and personal care products as model reactions, the ternary Pd-PTA-MIL-100(Fe) hybrids exhibited enhanced photocatalytic activity compared with their foundation matrices, the binary PTA-MIL-100(Fe) nanocomposite. Based on photoelectrochemical analyses, the improved photocatalytic performance can be attributed to the well-known electronic conductivity of the Pd NPs, the fast electron transport of PTA, the intense visible-light absorption of MIL-100(Fe), and the matched energy levels of the three components: MIL-100(Fe), PTA, and Pd NPs. Importantly, almost no Fe and W ions were leached from the samples during the reaction, demonstrating the photostability of the Pd-PTA-MIL-100(Fe) composite. In addition, possible photocatalytic reactions mechanisms have also been investigated.
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ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Yingshen Lu,Danmin He,Xiang Yuan,Quanhe Yan,Xin Shu,Ziting Hu,Zifa Zhang,Zhuoyan Liu,Zuimin Jiang,Run Xu,Wenzhen Wang,Zhongquan Ma,Teng Chen,Haitao Xu,Fei Xu,Feng Hong,Hongwei Song
The realization of large-area high-quality perovskite thick films under an atmospheric environment without humidity control is confronting an urgent challenge for the applications in X-ray detection and imaging. A spray-coating method with air as the gas carrier is employed to achieve large-area perovskite thick films for X-ray flat-panel detection applications. To further improve the quality of the thick films, the 10 µm-thick CsPbIBr 2 films with (100)-preferred orientation, low trap density (7.1 × 10 12 cm −3 ) and high resistivity corresponding to low dark current (3.2 × 10 −9 A) are prepared via dual-additive-assisted (NH 4 SCN and L-α-phosphatidylcholine (LP)) solution strategy under atmospheric environment with relative humidity of 60% (60% RH). Thus, the metal-semiconductor-metal-structured (Au/CsPbIBr 2 /Au) transverse X-ray detection device under 40 KeV X-ray irradiation possesses a high sensitivity up to 1420 µC Gy air −1 cm −2 under a weak electric field of 18 V mm −1 and a low dose rate of 3.3 µGy air s −1 that is lower than a dose rate of ≈5.5 µGy air s −1 required for routine medical diagnosis. Strikingly, the unencapsulated device maintains 80% (1120 µC Gy air −1 cm −2 ) of the original sensitivity after 1000 h under the atmospheric environment with 45–55% RH. These results pave the way for the practical applications of perovskite thick films in X-ray medical detection and imaging.
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LUMINESCENCE
·
2025
·Vol. 40
·期 1
·e70073
·
IF 3
Xuhui Zhang,Yafei Chen,Jun Ling,Jianping Li
It is of great significance to develop sensors for trace pesticide residues detection in food. Herein, an electrochemiluminescence (ECL) sensor with high sensitivity for the detection of methyl parathion (MP) was constructed by combining of the acetylcholinesterase (AChE) enzyme-inhibited reaction with tris-2,2′-bipyridyl ruthenium Ru(bpy) 3 2+ -triethylamine (TEA) system for the first time. A new ECL probe of MIL-100 loaded with Ru(bpy) 3 2+ (Ru-MIL-100) was synthesized, and then Ru-MIL-100 and AChE were immobilized on the electrode with Nafion. Triethylamine was used as a coreactant to form a Ru-MIL-100–TEA luminescence system. The hydrolysis of iodinated acetylthiocholine by AChE to generate acetic acid that consumes TEA, leading to the quenching of ECL of the Ru-MIL-100–TEA system. But MP can inhibit the activity of AChE, which leads to the decrease of the generated acetic acid and the enhancement of ECL. With the increase of the MP concentration, the ECL intensity increases. Due to the high catalytic activity of the AChE and the excellent ECL luminescence performance of the Ru-MIL-100 probe, the sensor is highly sensitive. The detection concentration range of MP was 1.0 × 10 −12 –1.0 × 10 −9 mol/L, and the detection limit was 2.07 × 10 −13 mol/L. The biosensor was applied to the determination of MP in vegetable samples.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yan Feng,Yue Tao,Jianhua Qu,Ying Zhang
A remediation strategy for polycyclic aromatic hydrocarbons (PAHs) in soil was proposed that combined soil washing (SW) and photocatalytic oxidation. In this study, naphthalene (2-ring Nap), phenanthrene (3-ring PHE), and pyrene (4-ring Pyr) served as model pollutants. We assessed the efficacy of Triton X-100 (TX-100) in desorbing PAHs from contaminated soil and its impact on subsequent photocatalytic degradation. TX-100 achieved desorption efficiencies of 72.1% for Nap, 63.3% for PHE, and 52.1% for Pyr during SW. The desorption process of PAHs from soil showed strong closely dependent on TX-100 concentration. Furthermore, a BiOBr/g-C 3 N 4 -30% (BOB/CN-30%) photocatalyst was employed to decompose PAHs in both synthetic and real SW effluents. Quenching experiments and electron paramagnetic resonance (EPR) spectroscopy confirmed the generation of active species (h + , OH, and O 2 − ) in the BOB/CN-30% system. Based on the photocatalytic treatment of PAHs in the synthetic SW effluent, the reactivity impact of TX-100 on PAH degradation by BOB/CN-30% depended on the TX-100 concentration. Optimal TX-100 levels enhanced PAH solubilization and decomposition, whereas excessive concentrations formed dense micelles that obstructed PAH degradation. Moreover, the coupled system exhibited efficient recirculation in real SW tests, underscoring its potential as a remediation option for PAHs-contaminated soils.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Han Jia,Daofan Wang,Fengbin Lv,Qiang Wang,Li Lv,Xin Wei,Lin Song,Haidong Jia,Kaihe Lv,Dexin Liu
Both negatively charged SiO 2 nanoparticle and positively charged AlOOH nanoparticle have been widely used in various fields, including enhanced oil recovery (EOR). In this study, the mixed binary AlOOH/SiO 2 nanoparticle (MBN) systems are constructed and firstly employed in EOR. The measurements of zeta potential and Z-average diameter indicate that the stable MBN aqueous dispersion could be obtained by controlling AlOOH/SiO 2 mass ratios, which is quantificationally confirmed via the e-DLVO theory. Then the ternary TX-100-AlOOH-SiO 2 (TX-A-S) system exhibits the great ability to stabilize the emulsion at the much low nanoparticle concentration (0.15 wt% in total). The emulsion stability is further evaluated in the harsh conditions (high shear, temperature and electrolyte concentration). Moreover, core flooding and microscopic visualization experiments reflect the TX-A-S stabilized emulsion can dramatically enhance tertiary oil recovery (~23% of initial oil in place), which should be attributed to the high improvement of both displacement and sweep efficiency.
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Research
·
2022
·
IF 11.036
Jin-Meng Heng,Hao-Lin Zhu,Zhen-Hua Zhao,Da-Shuai Huang,Jun-Yi Li,Pei-Qin Liao,Xiao-Ming Chen
Inorganic solids are a kind of important catalysts, and their activities usually come from sparse active sites, which are structurally different from inactive bulk. Therefore, the rational optimization of activity depends on studying these active sites. Copper is a widely used catalyst and is expected to be a promising catalyst for the electroreduction of CO2 to C2H4. Here, we report a conductive dinuclear cuprous complex with a short Cu···Cu contact for the electroreduction of CO2 to C2H4. By using 1H-[1,10]phenanthrolin-2-one and Cu(I) ions, a dinuclear cuprous complex [Cu2(ophen)2] (Cuophen) with a remarkable conductivity (3.9 × 10−4 S m−1) and a short intramolecular Cu···Cu contact (2.62 Å) was obtained. Such a short Cu···Cu contact is close to the distance of 2.54 Å between 2 adjacent Cu atoms in the edge of the copper(100)/(111) plane. Detailed examination of Cuophen revealed a high activity for the electroreduction of CO2 to C2H4 with a Faradaic efficiency of 55(1)% and a current density of 580 mA cm−2, and no obvious degradation was observed over 50 h of continuous operation. Comparing the properties and mechanisms of Cuophen and 2 other copper complexes with different Cu···Cu distances, we found that the shorter Cu···Cu distance is conducive not only for a *CO species to bridge 2 copper ions into a more stable intermediate transition state but also for C–C coupling.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Jiandong Guo,Husheng Jia,Aiqin Zhang,Zhen Pei,Man Luo,Jinbo Xue,Qianqian Shen,Xuguang Liu,Bingshe Xu
Iron-based MOFs have been considered as the candidate for Fenton-like reagents owing to their open pore size and uniformly dispersed Fe active centers. However, the strong coordination of metal ions with organic ligands greatly reduces the exposed active sites of most iron-based MOFs, thus reducing Lewis acid sites and limiting the activation efficiency of H 2 O 2 . At the same time, low Fe 3+ /Fe 2+ cycle efficiency also restricts H 2 O 2 activation efficiency. Hence, in this work, a series of MIL-100 (Fe) containing mixed valence coordinatively unsaturated metal site (CUS) with different Fe 2+ /Fe 3+ ratios was synthesized by heat treatment and used for tetracycline hydrochloride (TC-HCL) degradation with the assistance of visible light. Interestingly, accelerated Fe 3+ /Fe 2+ cycle was observed with the aid of visible light. Among the prepared samples, CUS-MIL-250 prepared under vacuum at 250℃ has superior degradation performance, primarily owing to its large specific surface area and pore volume, improved visible light absorption, and the introduction of more Fe 2+ CUS. Meanwhile, compared with Fenton-like system and photocatalytic system, the CUS-MIL-250/H 2 O 2 /Vis system, with effective separation of photogenerated electrons and holes, demonstrates a synergistic effect to generate more reactive oxidation species, thereby improving the degradation efficiency. In addition, the catalyst shows good stability and recyclability.
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FOOD CHEMISTRY
·
2021
·
IF 7.514
Manlu Wang,Juan He,Jin Luo,Jing Hu,Xiandeng Hou
The determination of inorganic arsenic species in real samples can be particularly challenging due to their trace levels and the interferences arising from sample matrix. Normally, the speciation analysis necessitates chromatographic separation. Herein, we report a novel method for the ultrasensitive detection and non-chromatographic speciation of inorganic arsenic by inductively coupled plasma mass spectrometry (ICP-MS), utilizing CdS/MIL-100(Fe) composites as an adsorbent and photocatalyst. The synthesized CdS/MIL-100(Fe) could completely adsorb As(V) and As(III) within 5 and 105 min, respectively. Following filtration and re-suspension in formic acid, the adsorbed As(III)/As(V) were reduced to arsine (AsH 3 ) under UV irradiation and swept to ICP-MS for detection. The limits of detection were found to be 1.7 ng L −1 (without preconcentration) and 0.11 ng L −1 (after 20-fold preconcentration). The method was successfully applied to the determination of trace inorganic arsenic in various food and water samples.
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