Issue 14, 2023

Preparation of nitrogen-doped carbon dots and their enhancement on lettuce yield and quality

Abstract

Nanotechnology is an effective way to stimulate the yield potential of crops. Various nano-fertilizers and nano-carriers are gradually being developed to bring about a technological revolution in the agricultural industry. As a biocompatible water-soluble nanomaterial, carbon dots (CDs) have attracted the attention of researchers for applications in agriculture. In this study, we prepared nitrogen-doped CDs (N-CDs) as a type of water-soluble carbon nanofertilizer by a one-pot hydrothermal method, and investigated its effects on lettuce biomass and quality. 100 and 200 mg L−1 of N-CDs substantially promoted lettuce biomass accumulation (41.70%), elevated lettuce nutrient content, as well as promoted the accumulation of major nutrients. Moreover, 100 mg L−1 N-CDs increased the chlorophyll a content by 12.68%, significantly increased the electron transport rate (ETR) by 38.61%, significantly increased the light energy conversion efficiency (Y(II)) by 31.24% and increased the Rubisco activity by 60.61%, which are important reasons for its increase in actual photosynthesis rate. N-CDs also have a positive effect on plant nitrogen metabolism by promoting the activity of glutamine synthetase. The significant benefits of N-CDs on lettuce make them have great potential for agricultural yield increase and quality improvement.

Graphical abstract: Preparation of nitrogen-doped carbon dots and their enhancement on lettuce yield and quality

Supplementary files

Article information

Article type
Paper
Submitted
28 12 2022
Accepted
07 3 2023
First published
22 3 2023

J. Mater. Chem. B, 2023,11, 3113-3123

Preparation of nitrogen-doped carbon dots and their enhancement on lettuce yield and quality

J. Tan, S. Zhao, J. Chen, X. Pan, C. Li, Y. Liu, C. Wu, W. Li and M. Zheng, J. Mater. Chem. B, 2023, 11, 3113 DOI: 10.1039/D2TB02817D

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