4.4 Article

Valorization of Expired Passion Fruit Shell by Hydrothermal Conversion into Carbon Quantum Dot: Physical and Optical Properties

期刊

WASTE AND BIOMASS VALORIZATION
卷 12, 期 4, 页码 2109-2117

出版社

SPRINGER
DOI: 10.1007/s12649-020-01132-z

关键词

Expired passion fruit; Carbon quantum dots; Hydrothermal synthesis; Valorization

资金

  1. Study on Comprehensive Control of Rocky Desertification and Ecological Service Function Improvement in Karst Peaks [2016YFC0502402]

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Expired passion fruit shells are processed into carbon quantum dots (CQDs) by hydrothermal synthesis method, exhibiting sphere shape morphology, weak graphite structure, and excitation-dependent photoluminescence properties. Additionally, expired passion fruit pulp treated with hydrothermal method shows high content of furandione, suggesting potential for further extraction and purification. This study provides a new approach for reusing expired fruits.
Expired fruits have always been treated as garbage. In this paper, expired passion fruit shells are processed into carbon quantum dots (CQDs) by hydrothermal synthesis method. Expired passion fruit shells based carbon quantum dots were characterized using TEM-EDS, FTIR, PL, XRD, XPS, Raman spectrum and Uv-vis analysis. The morphology of CQDs shows sphere shape with the size below 5 nm. CQDs exhibit a weak graphite phase structure according to Raman spectrum. The photoluminescence of CQDs shows the obvious excitation-dependent property with the quantum yield of 1.8%. In addition, expired passion fruit pulp was treated using hydrothermal method. The final product was analyzed using TEM and GC-MS. The result shows the high content of furandione in the product, which indicates the potential for further extraction by purification. This paper expands new way for the reuse of expired fruits. [GRAPHICS] .

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