JOURNAL OF RAMAN SPECTROSCOPY
·
2025
·
IF 1.9
Qi Zhang,Qingyi Wei,Hongbin Pu
The residues of crystal violet (CV) in shrimp were easily absorbed by biological tissues and caused serious damage to human health. In this study, doped TiO 2 SERS substrates were fabricated with three doping metals including Fe, Cu, and Co by sol-hydrothermal method. The SERS intensities reached the optimum at a Fe 3+ doping ratio of 5% with probe molecules of 4-MBA and CV. The 5% Fe-TiO 2 SERS substrates for monitoring CV residues obtained the best performance with LOD of 0.016 ppm and 0.03 ppm for standard solutions and shrimp protein extract solutions, respectively. The results indicated suitable doping metals could effectively modulate the energy bands of the semiconductor and improve the charge transfer between the substrate and analyte for a stronger SERS signal. The study would enrich the SERS technique for the fast test of CV in the actual samples.
研究领域:
分析化学
·
食品安全
·
纳米材料
·
光谱学
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环境毒理学
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产品关联
DOI
高影响因子
LUMINESCENCE
·
2024
·Vol. 39
·期 5
·e4778
·
IF 3.2
Yu Yin,Xiwen Wu,Chongyang Huang,Yaolin Dong,Jinquan Liu,Yan Tan,Hao Liang,Shengyuan Yang
To establish a new method for detecting crystal violet (CV), a harmful dye, herein, a genre of novel biomass carbon dots (CDs) was synthesized via a microwave method and employed as a fluorescent probe, in which water spinach and polyethylene glycol (PEG) performed as raw materials. Based on the inner filter effect (IFE) between the luminescent CDs and CV, the blue emission of this probe at 430 nm could be quenched by CV. Hence, a new strategy was proposed to selectively determine CV in aquaculture ambient. Moreover, under the optimal experiment conditions, this method showed a good linearity between the concentration of CV ( c ) and fluorescence quenching rate (Δ F/F 0 ) in the concentration range of 4–200 μmol/L with the corresponding correlation coefficient ( r ) and the detection limit of 0.997 and 710 nmol/L, respectively. With advantages of environmental protectivity, sensitivity, affordability, and user-friendliness, the facilely fabricated CDs could be successfully applied in detecting CV in aquaculture samples, providing a technical foundation for monitoring the pollution of CV and ensuring the quality and safety of aquatic products.
研究领域:
材料科学
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环境科学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2018
·
IF 3.235
Qiufeng Lan,Qingyi Li,Xueyan Zhang,Zhidong Chen
A novel electrochemiluminescence (ECL) system that consists of the copper sulphide (CuS) film and K 2 S 2 O 8 was prepared and used for detecting crystal violet in aqueous solutions. The CuS film was a luminescent semiconductor material, which was modified on glassy carbon electrode (GCE) via one-step electrodeposition . To enhance the ECL intensity, K 2 S 2 O 8 was added into the solution. The morphology and composition of the modified electrodes were analyzed with scanning electron microscope, energy-dispersed spectrum, transmission electron microscope, high resolution transmission electron microscopy , X-ray diffraction and Raman spectroscopy. Electrochemical impedance spectroscopy (EIS) was studied for different electrodeposition time. Under the optimal conditions, the ECL intensity of the quenching value (ΔECL) versus the logarithm of the concentration of crystal violet was linear over a concentration range from 5.0 × 10 − 8 to 1.0 × 10 − 5 mol L − 1 ( r = 0.9926) and the limit of detection (LOD) was up to 3.2 × 10 − 9 mol L − 1 .
研究领域:
分析化学
·
环境科学
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DOI
高影响因子
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
·
2016
·
IF 1.112
Miao Qin,Tianxiang Yin,Weiguo Shen
The present work reported the investigations on the interaction between a triphenylmethane industrial dye—crystal violet (CV)—and bovine serum albumin (BSA) by spectroscopic methods and molecular docking calculation. The static quenching mechanism of the intrinsic fluorescence of BSA by CV was deduced by the fluorescence measurements and the ground-state complex formation was confirmed from the UV-vis spectra. The site maker competition binding experiments together with the molecular docking showed that the CV molecule specifically bound on the subdomain IIA of BSA. The obtained values of thermodynamic properties of binding suggested that the hydrophobic interaction was dominated as suggested by molecular docking results that the CV molecule was surrounded by hydrophobic amino acid residues. The conformation change of BSA in the binding process was detected by circular dichroism spectra and Fourier-transform infrared (FTIR) spectra and also reflected by the size change of BSA from the measurements by dynamic light scattering (DLS).
研究领域:
生物化学
·
分子生物学
·
药物化学
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Yaoping Hu,Zhijin Gao
Crystal violet (CV), a hazardous dye, poses a serious threat to the environment and human health. This motivates us to develop a facile method for its sensitive detection. Herein, we demonstrate a rapid sensing of CV using a novel fluorescent nanomaterial, yellow emissive Se,N-codoped carbon dots (CDs). CDs with an intense photoluminescence peak at 566 nm are synthesized by a hydrothermal technique using selenourea and o-phenylenediamine as precursors. This material shows a high quantum yield of up to 16.7 %. It is found that the yellow fluorescence of CDs can be selectively quenched by CV, which makes them promising for CV sensing. The linearity is obeyed in the range of 0.02–1.60 μM, and the limit of detection is as low as 7.3 nM. After detailed investigations, the inner filter effect is proposed to be the sensing mechanism. For practical usage, the newly built method is applied to determine the trace amount of CV in fish tissue samples, and satisfactory results are obtained.
研究领域:
环境科学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
DIAMOND AND RELATED MATERIALS
·
2021
·
IF 3.315
Qingsong Ji,Haichao Li
High surface area carbons materials were prepared by a process of carbonization followed by chemical activation of biomass resources of chitin . The characterization of the carbon material was done using Scanning Electron Microscope (SEM), N 2 adsorption/desorption, Fourier Transform Infrared Spectroscopy (FTIR), Elemental Analyzer and X-ray Photoelectron Spectroscopy (XPS). The absorption of the carbon material was studied as kinetically and thermodynamically for the removal of cationic dye, Crystal Violet (CV) from wastewater. The results showed that KOH-activated samples with high BET surface area (2186.3 m 2 g −1 ) and total pore volume (0.9815 cm 3 /g). In some case, the samples are suitable for CV removal for a large range of pH and the removal efficiency is close to 100%. The adsorption process was found to follow pseudo-second order kinetics and Langmuir models. In addition, between 25 and 45 °C, the monolayer maximum adsorption capacity significantly increased and the maximum adsorption capacity was found to be 331.406, 399.943 and 420.068 mg g −1 at 25 °C, 35 °C and 45 °C, respectively.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2026
·
IF 5.4
Yuyan Bi,Yonggang Du,Yulei Jia,Yahui Cui,Weiqiang Xu,Xing Xia,Qianlong Yang
Porous GT-GQDs hydrogel microspheres via one-step green ionic crosslinking. • GQDs incorporation enriches anionic sites and opens the network texture. • High crystal violet adsorption capacity of 2030.91 mg/g at 25 °C. Porous spherical nanocomposite hydrogel (GT-GQDs) microspheres composed of gum tragacanth (GT) and graphene quantum dots (GQDs) were fabricated for the efficient adsorption of crystal violet (CV) from aqueous solution. Unlike chemically cross-linked hydrogel adsorbents that require hazardous reagents and post-synthesis fragmentation, these microspheres form in a single green ionic-crosslinking step, in which the anionic polysaccharide network of GT is synergistically combined with the abundant functional groups and opened texture contributed by GQDs. GQDs were prepared via controlled carbonization of citric acid, and the microspheres were obtained by rapid Ca 2+ crosslinking of GT and GQDs, yielding an interconnected porous network that was thoroughly characterized by FTIR, XRD, TGA, BET, XPS, SEM, and HRTEM. Systematic batch experiments were conducted to evaluate the effects of adsorbent dosage, initial CV concentration, solution pH, and contact time. The optimized GT-GQDs-4 microspheres delivered a high maximum adsorption capacity of 2030.91 mg/g (25 °C, an initial CV concentration of 1200 mg/L, 20 mg of adsorbent in 50 mL of solution, near-neutral pH), more than twice that of the GQDs-free control (956.96 mg/g), demonstrating the remarkable contribution of GQDs doping to the adsorption performance. Kinetic analysis followed the pseudo-first-order model, consistent with film-diffusion-influenced physical uptake, while equilibrium data were best described by the Freundlich isotherm, revealing favorable uptake on heterogeneous binding sites. Thermodynamic analysis confirmed a spontaneous and exothermic process, and the microspheres exhibited pronounced selectivity for CV over methyl orange in binary dye systems. This work demonstrates a green and facile route to high-capacity polysaccharide-based adsorbent microspheres for the removal of cationic dyes from water. Download: Download high-res image (135KB) Download: Download full-size image
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DOI
高影响因子
Nanoscale
·
2024
·Vol. 16
·期 29
·13938-13944
·
IF 5.8
Dan Xie,Youyou Deng,Xunlong Ji,Yiyan Zhang,Wentao Zhang,Zijin Hong,Wenjing Liu,Jingjing Du,Zhenli Sun
A novel breakthrough has been achieved in gas detection through the innovative application of surface-enhanced Raman scattering (SERS) to hydrogen (H2) detection for the first time. This study capitalizes on the unique SERS effects of gold nanoparticles coupled with the redox interaction between hydrogen and crystal violet, allowing for the development of a magnetic SERS probe that demonstrated enhanced sensitivity and specificity. This new probe can detect hydrogen concentrations as low as 1% by volume in gaseous environments, offering a substantial improvement over the detection limits of traditional hydrogen alarms. Further, this report comprehensively detailed the synthesis of the FA-CV materials, instrumental analysis, and an in-depth evaluation of the SERS performance of the FA-CV substrate, underlining the outstanding sensitivity, stability, and recyclability of the probe. The introduction of SERS in this novel capacity not only contributes a valuable approach to gas sensing technologies, but also suggests promising avenues for the application of SERS in environmental monitoring and energy security. This illustrates the adaptability and potential impact of this powerful technique.
研究领域:
化学
·
材料科学
·
环境科学
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产品关联
DOI
PubMed
高影响因子
TALANTA
·
2012
·
IF 3.794
Baomei Huang,Xibin Zhou,Zhonghua Xue,Guofan Wu,Jie Du,Di Luo,Tao Liu,Jing Ru,Xiaoquan Lu
Efficient and stable quenching of electrochemiluminescence of Ru(bpy) 3 2+ /TPA by malachite green(MG) and crystal violet(CV) at the glass carbon (GC) electrode is reported. A novel quenching mechanism has been proposed. Resonance energy transfer from the excited-state luminophore Ru(bpy) 3 2+⁎ to MG/CV and dynamic quenching are suggested as the mechanism for quenching ECL. The quenching mechanism is discussed in detail based on UV–visible absorption spectra, cyclic voltammograms, ECL curves and fluorescence methods . MG shows more efficient quenching than CV. Moreover, the quenched ECL intensity versus the concentration of MG and CV are linear over the concentration ranges of 8×10 −10 –8×10 −7 M and 3.46×10 −9 –5.5×10 −7 M, respectively. The corresponding limit of detection (LOD) was 1.0×10 −10 M for MG and 1.1×10 −10 M for CV ( S / N =3).
研究领域:
分析化学
·
电化学
·
发光光谱学
·
传感器与生物传感器
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Hua Zhang,Guanhua Li,Shuang Li,Linlin Xu,Yue Tian,Anxin Jiao,Xiangdong Liu,Feng Chen,Ming Chen
Hexagonal boron nitride/gold nanocomposites (h-BN/Au NCs) were fabricated and developed for ultra-sensitive detection of crystal violet (CV) and creatinine molecules using surface enhanced Raman scattering spectroscopy (SERS). The overgrowth of Au nanoparticles was driven by laser-induced photoexcitation of h-BN, which was monitored by absorption spectra. The h-BN/Au NCs with controllable Au compositions (0–1.85%) were characterized using Transmission Electron Microscopy (TEM), Scan Electron Microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectra (XPS). The microstructural analyses indicated that mono-dispersed Au nanoparticles with size of ∼10 nm can be accreted on h-BN via 30 min synthetic reaction. The comparative SERS results reveal that the h-BN/Au NCs with 1.68% Au composition provide enhanced SERS activity in comparison with other nanosubstrates in this paper. The corresponding enhancement mechanism of h-BN/Au NCs has been illustrated in detail, which can be composed of four contributions in our research. Then, the SERS analyses demonstrated that the detection limit of CV molecules was achieved at femtomole level of ∼10 −15 M, leading to ultrasensitive monitoring of dye pollution. More importantly, well-defined linear relationships were established between SERS signal intensities and logarithmical scale of creatinine concentration (10 −2 –10 −6 M), providing a precise assessment of creatinine in pathological diagnostics.
研究领域:
材料科学
·
分析化学
·
生物医学
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DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Shaochi Wang,Han Wang,Ting Du,Tong Bu,Jingke Xu,Sijie Liu,Xuechi Yin,Yao Wang,Daohong Zhang,Jing Sun,Jianlong Wang
Antibiotic abuse has caused serious health risks for human beings for long. To address the problem, novel and facile detection techniques are highly desired. Here, an effective multiplex immunochromatographic platform (MICP) with synthesis-free and cost-effective merits is established for simultaneous detection of antibiotics on a single immunochromatographic assay (ICA) strip. Adopting crystal violet (CV) as a signal tag for multiplex ICA allows for direct coupling with multiple antibodies in several minutes. By combining CV and ICA perfectly, this convenient strategy offers improvements in convenience, speed, flexibility, and portability, eventually ensuring the optimized effectiveness of this approach. As a result, the established platform is successfully used to detect streptomycin (STR) and chloramphenicol (CAP) with visual detection mode, and the obtained total recoveries of milk and honey real samples changed from 83.82 to 113.38% with total RSD values of 0.48 to 4.15%.
研究领域:
分析化学
·
食品安全检测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Shuyue Jia,Dongyan Tang,Jing Peng,Zhaojie Sun,Xu Yang
Novel β-cyclodextrin modified fibers with highly insoluble infraction and temperature enhanced adsorption performance were fabricated via electrospinning technology and followed thermo-crosslinking. The fabricated fibers were characterized by FT-IR, 1 H NMR, TGA and SEM. In the fibers, β-CD was crosslinked with methacrylic acid (MAA) units to maintain morphologies of fibers and further be utilized for the adsorption of Crystal Violet through complex and electrostatic interaction. In particular, N -isopropyl acrylamide (NIPAM) units were introduced to create thermo-responsively hydrophobic internal cavity within the swelling fibers at high temperatures. Benefiting from that, the maximum adsorption amount could reach to 1253.78 mg g −1 , enhanced by 20% than that at low temperatures. The adsorption data of the fibers fit well the pseudo-second-order model and Langmuir isotherm model. Moreover, the fibers could maintain high regeneration efficiency even after four adsorption-desorption cycles. These results indicated the practical application values of the β-cyclodextrin modified fibers in the dye wastewater treatment field.
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
危险品化学品经营许可证（带存储）