JOURNAL OF SURFACTANTS AND DETERGENTS
·
2012
·Vol. 16
·期 2
·265-269
·
IF 1.545
Yinghong Liu,Huijuan Wu,Weixing Ma
A direct, extraction-free spectrophotometric method was developed for the determination of benzalkonium bromide (BAK). The method is based on the formation of mixed dye–surfactant aggregates between alizarin green (AG) and BAK in alkaline medium by measuring the decrease in absorbance of AG at 460 and 700 nm. Beer's law was obeyed in the concentration range 3–40 μg mL −1 with good precision and accuracy. The limits of detection were 0.4 μg mL −1 at 460 nm and 0.3 μg mL −1 at 700 nm, which reduced to 0.2 μg mL −1 by combining the absorbance at the two wavelengths. The proposed method was successfully applied to the determination of BAK in disinfectant solution and eye drops. The analytical results of the real samples were in good agreement with those of an HPLC method.
研究领域:
分析化学
·
药学
✓ 已验证
DOI
高影响因子
DYES AND PIGMENTS
·
2021
·
IF 4.889
Fanyong Yan,Jingru Sun,Yueyan Zang,Zhonghui Sun,Hao Zhang,Jinxia Xu,Xiang Wang
MXene quantum dots (MQDs) derived from MXene with photoluminescent properties have attracted considerable attention. Herein, nitrogen-doped MQDs (N-MQDs) were constructed by a solvothermal method using Ti 3 C 2 MXene as precursors and o-phenylenediamine (oPD) as the nitrogen source. The morphology, element composition and optical properties of N-MQDs were investigated by transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS) and spectroscopy etc. The obtained N-MQDs are dispersed quasi-spherical nanoparticles , mainly composed of carbon, oxygen and nitrogen, with yellow fluorescence at 580 nm and quantum yield of 5.42 %. In further, N-MQDs can detect Alizarin Red (ARS) based on inner filter effect (IFE) with linear range and detection limit of 0–80 μM and 1.21 μM, respectively. N-MQDs can detect ARS in real water samples, and were expected to have further applications in the fields of environmental monitoring and biosensing.
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2023
·Vol. 28
·期 10
·4237
·
IF 4.6
Zhiyao Zhang,Zhaolin Li,Xue Bai,Juan Shi,Min Hu,Jin Chai,Keqian Li,Pengkang Jin
Commonly used peroxydisulfate (PS) or peroxymonosulfate (PMS) activation methods have been limited in their practical application due to certain drawbacks, such as high cost, high energy consumption and secondary pollution. In this study, a catalyst-free alizarin green (AG) self-activating PMS catalytic system was constructed based on photosensitization properties of dye, which ultimately achieved efficient degradation of the dye activator, also the target pollutant. Here, 52.5% of the 100 mL mixture of 10 mg/L AG decomposed within 60 min with 1 mM PMS under visible-light irradiation, thereby showing a strong pH adaptation. Mechanism of AG self-activating PMS was revealed that the photo-excited AG can effectively transfer photo-induced electrons to PMS for its activation, which generates reactive oxidizing species dominated by singlet oxygen (1O2), and supplemented by hydroxyl radical (•OH), superoxide radical (O2•−) and sulfate radical (SO4•−) to realize the efficient self-degradation of the dye pollutants. Moreover, such self-catalytic system operated well under natural sunlight irradiation, indicating the great application potential in the actual wastewater treatment. Herein, photosensitive dye acted as an ideal PMS activator realizing its efficient self-degradation, which provides a novel idea of “using waste to treat waste” for developing wastewater treatment process in a high-efficiency and low-consumption way.Keywords:alizarin green dye;photosensitization;PMS;catalysis;using waste to treat waste
研究领域:
环境科学
·
化学工程
·
废水处理
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产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2025
·
IF 4.6
Shen Zhang,Zhuo Wang,Tianyu Miao
In terms of the superior performance of gold nanoclusters (Au NCs) and the ubiquitous tryptophan in higher plants, tryptophan stabilized gold nanoclusters (Try@Au NCs) were synthesized through chemical reduction method. The uniformly dispersed Au NCs emitted blue fluorescence at 448 nm when the excitation wavelength was located at 368 nm. On the basis of inner filter effect, Try@Au NCs was used as a turn-off fluorescence nanoprobe for simple and quick detection of alizarin. The water-soluble Try@Au NCs displayed excellent stability under various conditions which was beneficial for practical application. This as-prepared fluorescence nanosensor displayed noticeable sensitivity and selectivity toward alizarin measurement with a detection linear range of 0.5–100 μM and detection limit of 0.092 μM. The satisfactory results of recovery assay stated that this as-developed nanosensor was great promising for alizarin detection in real samples.
研究领域:
分析化学
·
纳米技术
·
生物传感
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POWDER TECHNOLOGY
·
2020
·
IF 4.142
Summaira Saghir,Zhenggang Xiao
Metal-organic frameworks (MOFs) are traditional porous materials considered as efficient and low-cost for the removal of organic dyes from polluted water. In this study, we report a new type of hierarchical porous zeolitic imidazole frameworks −67@ layered double hydroxide (ZIF-67@LDH) consisting of nanocubes decorated with nanosheets . The prepared ZIF-67@LDH contains versatile functionalities which exhibit superior adsorption efficiency and adsorption rate for Methyl Orange (MO) and Alizarine Red S (ARS). The influence of pH, temperature, and contact time were analyzed in detail. The kinetics study revealed that the adsorption of MO and ARS over ZIF-67@LDH followed pseudo-second order (PSO) kinetic model , and adsorption isotherms were best described by the Langmuir isotherm model. Adsorption isotherms confirm the monolayer adsorption of MO and ARS over ZIF-67@LDH. The prepared material also shows outstanding recyclability with negligible loss. Thus ZIF-67@LDH presented a promising candidate for treating MO and ARS containing wastewater.
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
Micro & Nano Letters
·
2021
·Vol. 16
·期 10
·500-505
·
IF 1.102
Dejuan Fa,Yuqing Miao
By hydrothermal reaction, the hydrangea-like ZnS/ZnIn 2 S 4 microspheres were prepared in the presence of thioacetamide. X-ray photoelectron spectroscopy and high resolution transmission electron microscopy confirmed that the ultra-long nanowires are composed of ZnS and ZnIn 2 S 4 . Scanning electron microscopy showed the morphology of ultra-thin nanosheets with an average thickness of 8.5 nm cross from inside to outside, forming ZnS/ZnIn 2 S 4 microspheres with a porous diameter of about 2.8 μm. Nitrogen adsorption desorption isotherm determined that the BET specific surface area of the microspheres was 109.19 m 2 /g which showed that they have a large specific surface area. The obtained ZnS/ZnIn 2 S 4 microspheres showed broad absorbance ranging from UV (200 nm) to visible (520 nm) with low indirect band gaps of 2.08 eV. It leads to outstanding visible-light-driven photocatalysis for the degradation of xylenol orange (XO) and thymol blue (TB) in water, and the two dyes were almost completely degraded after 60 and 135 min, respectively. This provides new potential to explore nanomaterials for efficient photo-driven degradation of organic dyes under visible light irradiation.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Analytical Methods
·
2014
·Vol. 6
·期 10
·3474-3481
·
IF 1.938
Yuanzhen Zhou,Weimin Tang,Jing Wang,Guo Zhang,Shouning Chai,Liang Zhang,Ting Liu
A sensitive and selective method based on a poly(alizarin yellow R)-modified carbon paste electrode (PAYR/CPE) to detect dopamine (DA) and uric acid (UA) was successfully established. The morphology of the electrode surface was observed by scanning electron microscopy (SEM). Electrochemical characterization of the PAYR/CPE was investigated by electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and differential pulse voltammetry (DPV). It was illustrated that the PAYR/CPE had excellent electro-catalytic ability toward the oxidation of DA. The anodic peak current of DA was greatly enhanced at the PAYR/CPE, and the standard rate constant (ks) was calculated to be 6.17 s−1. The linear calibration curves were obtained as 0.49–70.1 μM and 83.6–488.1 μM for DA and 27.8–304.4 μM and 381.6–1118 μM for UA by DPV. The detection limits were 0.16 μM for DA and 9.5 μM for UA. Moreover, the modified electrode was applied to the selective detection of DA and UA with high sensitivity and selectivity. Furthermore, the modified electrode displayed high reproducibility and stability for determination of these species. Thus, the proposed electrode could be conveniently employed for the determination of DA and UA in real samples and provide satisfactory results.
研究领域:
分析化学
·
生物医学工程
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2012
·
IF 4.555
Xi Ba,Liqiang Luo,Yaping Ding,Zhen Zhang,Yuliang Chu,Bijun Wang,Xiaoqian Ouyang
In this work, a poly(alizarin red)/Graphene composite film modified glassy carbon electrode (PAR/Graphene/GCE) was prepared for simultaneous determination of four DNA bases (guanine, adenine, thymine and cytosine) without any pretreatment. The morphology and interface property of PAR/Graphene films were examined by scanning electron microscopy and electrochemical impedance spectroscopy. The PAR/Graphene/GCE exhibited excellent electrocatalytic activity toward purine (guanine and adenine) and pyrimidine (thymine and cytosine) in 0.1 M phosphate buffer solution (pH 7.4). Under optimum conditions, differential pulse voltammetry was used to detect the oxidation of purine and pyrimidine. The results showed that PAR/Graphene/GCE exhibited well-separated peaks, low detection limit, high sensitivity and wide linear range for simultaneous detection of purine and pyrimidine. The proposed sensor also has good stability and reproducibility. Furthermore, the modified electrode was applied for the detection of DNA bases in a fish sperm DNA sample with satisfactory results.
研究领域:
生物化学
·
分析化学
·
材料科学
✓ 已验证
DOI
高影响因子
Catalysts
·
2024
·Vol. 15
·期 1
·24
·
IF 3.8
Yaohui Xu,Yong Li,Zhao Ding,Yang Zheng
To further enhance the safety and energy efficiency of the Fe3O4preparation experiment, we proposed a strategy for synthesizing monodisperse Fe3O4microspheres through a one-step solvothermal process. In this environmentally friendly synthesis method, stable FeCl3∙6H2O was utilized as the sole raw material, while ethylene glycol, characterized by its high boiling point and favorable safety profile, served as the solvent. Additionally, inexpensive and readily available urea was selected to function either as a mineralizer or surfactant. Through this one-step solvothermal reaction, the target product of Fe3O4could be obtained without subsequent calcination under reducing or inert atmospheres, thereby enhancing experimental safety and promoting energy conservation. By controlling the amount of urea added, it became feasible to produce monodisperse magnetic Fe3O4microspheres characterized by complete crystallinity and high yield. Utilizing the as-synthesized Fe3O4as a catalyst, we investigated its photocatalytic activity against xylenol orange organic dyes along with its regeneration characteristics. When 40 mmol of urea was incorporated into the reaction mixture, the resulting Fe3O4sample exhibited optimal photocatalytic performance; a 20 mg/L xylenol orange solution became colorless and transparent after just 1.5 h of UV light irradiation. Furthermore, during five consecutive regeneration cycles, its catalytic activity could be restored to its initial level. Importantly, Fe3O4demonstrated excellent magnetic sensitivity properties that facilitated rapid targeted separation under an external magnetic field, providing convenience for recovery and collection purposes.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
·
2017
·Vol. 96
·期 9
·2007-2013
·
IF 1.356
Xueqing Yu,Yingjun Jing,Hui Gao
To enhance the adsorption performance, chitosan microspheres (CS–MSs) were grafted with polyethylenimine (PEI), a cationic compound with abundant amine groups. The resulting PEI-grafted CS–MSs (PEI–CS–MSs) were used for the adsorption of xylenol orange (XO), an anionic dye. The results show that PEI–CS–MSs were in regular spherical shape without porous structure. XO molecules were adsorbed onto the amine groups of PEI–CS–MSs through electrostatic interaction. The maximum adsorption capacity of XO onto PEI–CS–MSs was 816.33 mg/g at 303 K, being much higher than that onto CS–MSs. The adsorption process could be properly described by the pseudo-second-order kinetic and Langmuir models. The adsorption of XO was a spontaneous process with exothermic nature. In addition, the adsorption capacity only decreased by 0.52 % after seven cycles of adsorption-desorption, indicating the excellent reusability of PEI–CS–MSs.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Future Foods
·
2023
·
IF 0
Yanan Liu,Huan Li,Jian Chen,Jiesi Feng,Renjie Lian,Linglin Fu,Yanbo Wang
ABSTRACT Indicating hydrogels have shown the advantages of being fast, sensitive, and real-time in demonstrating the freshness of aquatic products due to their noticeable color change. In this work, an anti-freezing hydrogel embedded with pH-sensitive alizarin was developed as an original colorimetric indicator for monitoring the corruption of aquatic products at low temperatures. The anti-freezing hydrogel was prepared from 2-carboxyethyl acrylate, [2-(methacryloyloxy)ethyl]-trimethylammonium chloride, and 2-hydroxyethyl methacrylate monomers with triethylene glycol dimethacrylate as cross-linking agent. The hydrogel showed excellent anti-freezing capability, which was further incorporated with the pH-sensitive dye alizarin to gain the indicating capability. When applied in the indication of the freshness of salmon under low-temperature storage, it was found that the color changes of the indicator corresponded with the total volatile basic nitrogen contents of salmon, the correlation coefficient of which was 0.959 6. These results indicated the application potential of the hydrogels as freshness indicators during low-temperature storage or cold-chain transportation.
研究领域:
材料科学
·
食品科学
·
化学工程
✓ 已验证
DOI
Analytical Methods
·
2024
·
IF 2.7
Rui Jiang,Jinfeng Wang,Bin Feng,Panpan Mou,Shuo Zhou,Xianbo Zhang,Yan Zhou,Guosong Chen,Donghai Lin
We have developed a novel fluorescence sensor based on upconversion nanoparticles (UCNPs) for the rapid and sensitive detection of trace aluminum ions (Al³⁺). The sensor utilizes the inner filter effect (IFE) between the UCNPs and the xylenol orange-aluminum complex (XO-Al³⁺), resulting in significant fluorescence quenching at 543 nm upon Al³⁺ binding. This quenching correlates directly with the Al³⁺ concentration, allowing for quantitative detection within a range of 0–30 µM and achieving an ultra-low detection limit of 0.19 µM. Selectivity of the sensor is enhanced by the incorporation of ascorbic acid, which masks interfering Fe³⁺ ions, thus ensuring accurate determination of Al³⁺ even in the presence of other metal ions. The UCNPs-XO sensor exhibits excellent stability, reproducibility, and minimal interference from commonly co-existing substances. This makes it suitable for the detection of Al³⁺ in various matrices, including food products and environmental water samples. Our work offers a significant advancement in Al³⁺ detection, with potential applications in food safety, environmental monitoring, and public health.
研究领域:
分析化学
·
环境科学
·
食品安全
✓ 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）