Bamboo Kraft Pulp Black Liquor as a Renewable Source of Value-Added Carbon Dots
Year: 2024
Type: article
Abstract: China is the country with the most abundant bamboo resources in the world. Using bamboo as a raw material for pulping and papermaking can save a lot of wood and protect forests. Bamboo pulping enterprises mostly adopt sulfate processes to produce a large amount of black liquor (BL), which contains monosaccharides, polysaccharides, oligosaccharides, pectin, lignin, etc. The utilization of the high-value organic matter is of great economic and environmental significance. In this study, blue-green carbon dots (C-dots) were prepared from bamboo (Lingnania chungii) kraft pulp BL using a hydrothermal method. The changes in carbohydrate content in BL in relation to hydrothermal temperature and hydrothermal time were discussed in detail. Then, a series of characterizations of BL-C-dots, prepared under one of the hydrothermal conditions (180 °C, 6 h), were performed and the BL-C-dots showed an excitation-dependent photoluminescence (PL) spectrum and a quantum yield (QY) of 2.9% in an aqueous solution. Finally, the as-prepared BL-C-dots were successfully used as fluorescent materials to develop an anti-counterfeiting code. The fluorescent code exhibited a clear outline, an excitation-tunable color, good stability, and high security, showing great anti-counterfeiting potential and realizing the high-value utilization of BL.
Source: Nanomaterials
DOI: 10.3390/nano14231887
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,296
Awards: G1266753932, G143734880, G1487679755, G156656177, G1621061856, G1746867414, G1773585429, G187200285, G1961291344, G2150944084, G2189945216, G2312648548, G296555712, G3294921335, G3402710915, G3422851091, G3444997218, G3516336006, G3529779907, G3702672635, G4051161377, G4722356353, G4857869842, G500981587, G5048985311, G515899620, G5327427989, G5550549688, G5561415665, G5583103745, G5752597368, G5891976626, G6642578014, G6918424603, G7237939175, G7241253138, G7341812705, G7530731655, G8040497072, G862614087, G8764436918, G982948755
OpenAlex ID: W4404699087