کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7138970 | 1462018 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Rapid and highly selective detection of formaldehyde in food using quartz crystal microbalance sensors based on biomimetic poly-dopamine functionalized hollow mesoporous silica spheres
ترجمه فارسی عنوان
تشخیص سریع و بسیار انتخابی فرمالدئید در مواد غذایی با استفاده از سنسورهای میکرواز کریستال کوارتز براساس کانی های سیلیکا مزوزوپور توخالی پلییدوپاتی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
In this study, poly-dopamine functionalized hollow mesoporous silica spheres (PDA/HMSSs) are prepared and exploited as a sensing material for formaldehyde detection in food. The materials were characterized by small-angle X-ray diffraction, scanning electron microscope, transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectrometry, and nitrogen adsorption-desorption. The results show that PDA was successfully modified onto the surface of HMSSs. The PDA/HMSSs-based quartz crystal microbalance (QCM) sensors exhibited a low detection limit of 100 ppb, a remarkably rapid response (<5â¯s), a short recovery (<3â¯s), as well as excellent sensitivity due to available hollow space and accessibly radial channels. Based on enthalpy change (ÎHoâ¯=â¯â51.97â¯KJ/mol) and the formation of CN bonds, studying on the sensing mechanism revealed that weak chemisorption between PDA/HMSSs and formaldehyde played a significant role in the good specificity and reliability for formaldehyde detection. Furthermore, the as-prepared sensors were directly applied in measuring formaldehyde levels in shiitake mushroom, Chinese cabbage, Litopenaeus vannamei, and broccoli, where rapid detections within 30â¯s were achieved with high sensitivity, reusability, and good selectivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 271, 15 October 2018, Pages 311-320
Journal: Sensors and Actuators B: Chemical - Volume 271, 15 October 2018, Pages 311-320
نویسندگان
Jie Zong, Yu Shrike Zhang, Ye Zhu, Yong Zhao, Weijia Zhang, Yongheng Zhu,