INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2019
·
IF 4.784
Long Li,Jibran Iqbal,Ying Zhu,Fang Wang,Feiyu Zhang,Wanchao Chen,Ting Wu,Yiping Du
Alumina, as a support material, was loaded together with chitosan and hydroxyapatite to form chitosan/Al 2 O 3 -HA composite beads and was used for estradiol and chrysoidin removal from aqueous solution in the present work. The physicochemical properties of the beads were studied with Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectrometry (FTIR), thermogravimetric analysis (TGA) and Brunauer-Emmett-Teller (BET) surface area analysis. FTIR spectra confirmed that the chitosan was loaded successfully on Al 2 O 3 -HA, and functional groups were immobilized onto the surface of the beads after the synthesis. The adsorption condition including pH, the amount of adsorbent, initial concentration and time were evaluated during the batch experiments. Isotherm data best matched the Langmuir model and the pseudo-second-order model best described the adsorption kinetics . The maximum adsorption capacity was found to be 39.78 mg/g and 23.26 mg/g for estradiol and chrysoidine, respectively. The adsorbed estradiol and chrysoidin were completely eluted from the composite beads with the eluent of 0.1 M H 2 SO 4 /MeOH and the regenerated material was used in several cycles without deterioration in its initial performances. This study suggests that the developed composite beads have high potential for the efficient removal estradiol and chrysoidin from aqueous solution.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Biomass Conversion and Biorefinery
·
2024
·
IF 3.5
Wang Huan,Luo Yijia,Wang Shan,Chen Youning,Zhao Wei
Magnetized pitaya peel bio-based carbon aerogel (MCA) was prepared by hydrothermal and freeze-drying methods; then, magnetized bio-based carbon aerogel (MCKEA) was obtained by the surface functionalization of MCA with 3-amino-1, 2-propylene glycol and KH-550. MCA and MCKEA were characterized by SEM, FT-IR, and XRD. The adsorption properties of MCA and MCKEA for dyes were investigated. It showed that the adsorption capacity of MCKEA for dyes was greater than that of MCA, especially for acid chromium blue K. The adsorption of acid chromium blue K by MCKEA conforms to the pseudo-second-order kinetic model and Langmuir adsorption model. The reusability experimental results showed that MCKEA can be reused for nine times. So MCKEA is a kind of adsorbent with high efficiency, high reusability, and low cost, which has broad application prospect. Graphical Abstract
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
·
2012
·Vol. 59
·期 11
·1415-1420
·
IF 0.678
Jinyun Peng,Keliang Nong,Lingping Cen
Acid chrome blue K (ACBK) was electropolymerized on the surface of a glassy carbon electrode (GCE) by cyclic voltammetric sweep in the potential range from –0.2 to 0.9 V. The characteristic of poly-ACBK film was studied by different methods such as electrochemical impedance spectroscopy (EIS) and cyclic voltammetry. This modified electrode showed excellent electrocatalytic response to curcumin with the increase of the electrochemical responses. Under the optimal conditions a good linear voltammetric response could be obtained over the range of 1.0 × 10 −7 -7.0 × 10 −5 M and the detection limit was got as 4.1 × 10 −8 M (S/N = 3). The method was successfully applied for the determination of curcumin in human urinev samples.
研究领域:
分析化学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Qing Huang,Xiaokun Li,Suxiang Feng,Wenfeng Zhuge,Jinyun Peng,Xiaoting Li
Ag nanoparticles functionalized with poly-acid chrome blue K and graphene (Ag-poly-ACBK@Gr) were successfully fabricated on the surface of a glassy carbon electrode using layer-by-layer electropolymerization. The surface structure of the synthesized modified glassy carbon electrode was characterized by scanning electron microscopy. The electrochemical behaviours of diclofenac sodium (DS) at the Ag-poly-ACBK@Gr-modified electrode were investigated by cyclic voltammetry and differential pulse voltammetry. It was found that the prepared sensor exhibited a cathodic peak at 0.78 V with higher peak current response compared to the related modified electrodes. Under optimal conditions, the sensor for the determination of DS exhibits a good linear relationship between the peak current and DS concentration in the range from 0.1 to 40 μM, and the equation is Ip (μA) = 7.23 × 10 3 c (μM) + 3.46 × 10 -2 (R = 0.9955) with the estimated limit of detection of 34.2 nM (S/N = 3). The Ag-poly-ACBK@Gr-modified glassy carbon electrode with high sensitivity and excellent stability and selectivity was successfully applied to detect DS in real drugs and human urine at the recoveries ranging from 99.60 to 101.84%.
研究领域:
分析化学
·
材料科学
·
药物分析
✓ 已验证
产品关联
DOI
高影响因子
Journal of Analysis and Testing
·
2022
·Vol. 7
·期 2
·157-162
·
IF 0
Gao Su,Ye Ming-Liang,Ma Rui,Liu Ai-Rong,Gao Hong-Wen
Based on the Mg 2 + complexation with acid chrome blue K (ACBK) at pH 10.2, an automatic system was designed to determine total hardness of water. The system consists of a vector colorimeter, a multi-channel sampling pump and both reagents A and B. Two kinds of reagent solutions were prepared and used in this system, i.e., ammoniacal buffer and ACBK—disodium magnesium EDTA solutions. The experimental results of the standard solutions containing 2 and 3 mg/L of total hardness showed that the relative standard deviations (RSDs) were 1.9% and 2.2%, respectively, and the limit of detection (LOD) was only 0.035 mg/L. The detection of four natural water samples showed that the recoveries were between 85.0% and 108.6%, consistent with those obtained by ICP-AES method.
研究领域:
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
Chemistry Africa-A Journal of the Tunisian Chemical Society
·
2020
·Vol. 3
·期 3
·727-734
·
IF 0
Wang Yanfang,Guo Ying,Pan Kunming,Lin Xiaoyun,Ni Yongnian
In this paper, an electrochemical sensor based on depositing acid chrome blue K on the surface of glassy carbon electrode was developed for detection of nitrofurazone. The obtained poly-ACBK film was characterised by atomic force microscope. The experimental results indicated that the Poly-ACBK/GCE showed good electrocatalytic activity to the redox reactions of nitrofurazone by differential pulse voltammetry and cyclic voltammetry in Britton-Robinson buffer solution, and the different redox peak currents were observed in different pH ranges (2.0–6.0, 7.0–12.0). Base on these, electrochemical reaction mechanism of nitrofurazone was presented in different pH ranges. Under the optimal conditions, a linear relationship between the reduction peak currents and concentrations for nitrofurazone is figured out in the range of 0.75‒192 μM, with detection limits of 0.25 µM (S/N = 3). This sensor produced satisfactory reproducibility and stability and was successfully applied to monitor of nitrofurazone in real samples (nasal drops).
研究领域:
分析化学
·
电化学
✓ 已验证
DOI
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Shaohua Luo,Yuxia Liu
Poly(acid chrome blue K) modified glassy carbon electrode (GCE) was electropolymerized by cyclic voltammetric sweep in the potential range from –0.2 to 0.9 V. The characteristic of Poly(acid chrome blue K) film was studied by different methods such as electrochemical impedance spectroscopy (EIS) and cyclic voltammetry. This modified electrode showed excellent electrocatalytic response to vanillin with the increase of the electrochemical responses. Under the optimal conditions a good linear voltammetric response could be obtained over the range of 1.0×10 -7 ~ 7.0×10 -5 mol dm -3 and the detection limit was got as 3.2×10 -8 mol dm -3 (3σ). The proposed method was successfully applied to biscuits and dark-chocolate samples with satisfactory results.
研究领域:
分析化学
·
电化学
·
食品分析
·
传感器
·
分子检测
✓ 已验证
DOI
高影响因子
SN Applied Sciences
·
2019
·Vol. 1
·期 10
·1-11
·
IF 0
Geng Yuqing,Wang Zhiwei,Wang Yahuan,Song Jiayang,Chen Zhimin,Chen Jiafu,Chen Yong,Fu Jianwei
The development of excellent dye adsorbent with high adsorption capacity and good separation function is imperative to clean the wastewater. Herein, an innovative magnetic Fe–Fe 2 O 3 @poly(cyclotriphosphazene- co -polyethyleneimine) (named as Fe–Fe 2 O 3 @PCP) composite was fabricated through a facile copolymerization between hexachlorocyclotriphosphazene and polyethyleneimine in the presence of Fe–Fe 2 O 3 nanoparticles. With the help of scanning electron microscope, transmission electron microscope, Fourier transform infrared spectroscope and vibrating sample magnetometer, the microstructure of the resulting magnetic Fe–Fe 2 O 3 @PCP composite was characterized. Then, the adsorption performance of magnetic Fe–Fe 2 O 3 @PCP composite was evaluated by removing anionic dye acid chrome blue K (ACBK) from aqueous solution. The effects of contact time, initial solution pH and temperature on the adsorption of ACBK onto magnetic Fe–Fe 2 O 3 @PCP composite were systematically studied. The kinetics, isotherms and mechanism of the adsorption process were analyzed. Results show that the maximum adsorption capacity of the magnetic Fe–Fe 2 O 3 @PCP toward ACBK dye could be up to 260 mg g −1 at 25 °C in neutral solution. The adsorption kinetics follows both the pseudo-second-order kinetic model and the Weber’s intraparticle diffusion model well. And the Freundlich isotherm model can nicely fit the adsorption equilibrium data. The electrostatic attraction between Fe–Fe 2 O 3 @PCP and ACBK plays a dominant role in the adsorption process. Moreover, the magnetic Fe–Fe 2 O 3 @PCP composite owns a high saturation magnetization of 30.1 emu g −1 , rendering it rapid magnetic separability and good reusability. After five adsorption–desorption cycles, the magnetic composite still kept 75% of removal efficiency with the adsorption capacity of 195 mg g −1 . The excellent adsorption capacity and good magnetic separability make the magnetic Fe–Fe 2 O 3 @PCP composite a promising adsorbent for efficient removal of anionic dyes including ACBK from contaminated wastewater.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Caihong Xu,Chunchuan Gu,Qi Xiao,Jiandan Chen,Zheng-Zhi Yin,Hongying Liu,Kai Fan,Lihua Li
The quantification of dopamine (DA) in clinical samples and tracking its dynamic changes from living cells is not only critical for clinical blood examination but also important to understand its role in cellular physiology. A new functionalized microneedle electrode is fabricated with 4-mercaptophenylboronic acid (4-MPBA) and a polymeric additive (acid chrome blue K, ACBK) to achieve a dual-recognition molecular imprinted interface. DA molecules could perform suitable configuration for fluent electron-transfer via cyclic borate inter-reaction between boric acid group of anchored 4-MPBA and the hydroxyl group, and ACBK should be gradually electropolymerized around the DA molecules and adhering to the electrode surface. The obtained interface with imprinted cavity is highly selective to DA molecules, which may be attributed to the dual-recognition site of 4-MPBA and the complementary cavity shape, leading to an unobstructed electron-transport pathway through 4-MPBA and the gold nanoparticles (AuNPs) for the captured DA. The properties of the prepared microneedle electrodes are characterized via electrochemical techniques. Under optimum conditions, the sensor exhibits outstanding performance for detecting DA with good linearity in a broad range of 5 × 10 -7 mol/L to 1.0 × 10 -3 mol/L with a detection limit of 1.4 × 10 -7 mol/L (S/N = 3). Furthermore, the fabricated sensor is successfully applied to analyze DA in serum and can achieve real-time monitoring of DA released from PC12 cells stimulated by K + .
研究领域:
分析化学
·
生物技术
·
电化学
·
纳米技术
·
生物分析传感器
·
神经科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）