Pistachio shell-derived carbon dots and their screen-printing formulation for anticounterfeiting applications

IF 2.3 4区材料科学 Q2 CHEMISTRY, APPLIED

Journal of Coatings Technology and Research Pub Date : 2024-02-26 DOI:10.1007/s11998-023-00894-0

H. D. Chinmayi, Namratha Ullal, Dhanya Sunil, Suresh D. Kulkarni, P. J. Anand, K. Udaya Bhat

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Abstract

In synergy with constructing a sustainable environment, facile reuse of carbon-rich biowastes as inexpensive precursors for the synthesis of value-added functional carbon dots (CDs) has garnered fruitful outcomes. Pistachio shells comprising cellulose, hemicellulose, and lignin were successfully utilized as a carbon source for the synthesis of CDs through carbonization and subsequent hydrothermal method. The methanolic fraction with desirable fluorescence in the visible region obtained after column purification of CDs was further characterized using TEM, EDS, SAED, FTIR, XPS, RS, XRD, and TCSPC techniques. The blue and green emitting CDs were used as colorants to prepare a water-based ink for screen printing. The screen prints on UV dull paper substrate exhibited good colorimetric and density values. The UV-induced yellow fluorescence of the ink film can be used as a security feature to authenticate genuine document/products and data storage.

Graphical abstract

Abstract Image

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开心果壳衍生碳点及其丝网印刷配方在防伪领域的应用

在建设可持续发展环境的过程中，将富碳生物废料作为廉价前体用于合成高附加值的功能性碳点（CD）取得了丰硕成果。由纤维素、半纤维素和木质素组成的开心果壳被成功用作碳源，通过碳化和随后的水热法合成碳点。采用 TEM、EDS、SAED、FTIR、XPS、RS、XRD 和 TCSPC 等技术进一步表征了经柱纯化后获得的在可见光区域具有理想荧光的甲醇馏分。蓝色和绿色发光 CD 被用作着色剂来制备用于丝网印刷的水基油墨。在紫外线钝化纸基底上进行的丝网印刷显示出良好的色度和密度值。墨膜的紫外线诱导黄色荧光可用作防伪特征，以验证真实文件/产品和数据存储。

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来源期刊

Journal of Coatings Technology and Research 工程技术-材料科学：膜

CiteScore

4.30

自引率

8.70%

发文量

130

审稿时长

2.5 months

期刊介绍： Journal of Coatings Technology and Research (JCTR) is a forum for the exchange of research, experience, knowledge and ideas among those with a professional interest in the science, technology and manufacture of functional, protective and decorative coatings including paints, inks and related coatings and their raw materials, and similar topics.