May 2023
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24 Reads
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7 Citations
Journal of Environmental Chemical Engineering
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May 2023
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24 Reads
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7 Citations
Journal of Environmental Chemical Engineering
June 2022
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34 Reads
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5 Citations
A simple, green, and solvent-free pyrolysis method for the preparation of starch-based carbon dots (CDs) was developed.
December 2021
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57 Reads
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1 Citation
Life
Macadamia nuts are considered a high-quality oil crop worldwide. To date, the lipid diversity and the genetic factors that mediate storage lipid biosynthesis in Macadamia ternifolia are poorly known. Here, we performed a comprehensive transcriptomic and lipidomic data analysis to understand the mechanism of lipid biosynthesis by using young, medium-aged, and mature fruit kernels. Our lipidomic analysis showed that the M. ternifolia kernel was a rich source of unsaturated fatty acids. Moreover, different species of triacylglycerols, diacylglycerol, ceramides, phosphatidylethanolamine, and phosphatidic acid had altered accumulations during the developmental stages. The transcriptome analysis revealed a large percentage of differently expressed genes during the different stages of macadamia growth. Most of the genes with significant differential expression performed functional activity of oxidoreductase and were enriched in the secondary metabolite pathway. The integration of lipidomic and transcriptomic data allowed for the identification of glycerol-3-phosphate acyltransferase, diacylglycerol kinase, phosphatidylinositols, nonspecific phospholipase C, pyruvate kinase 2, 3-ketoacyl-acyl carrier protein reductase, and linoleate 9S-lipoxygenase as putative candidate genes involved in lipid biosynthesis, storage, and oil quality. Our study found comprehensive datasets of lipidomic and transcriptomic changes in the developing kernel of M. ternifolia. In addition, the identification of candidate genes provides essential prerequisites to understand the molecular mechanism of lipid biosynthesis in the kernel of M. ternifolia.
November 2021
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38 Reads
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3 Citations
Acidic reagents play an important role in the preparation of carbon dots (CDs). Therefore, we prepared efficient green fluorescent CDs by potassium bisulfate, acetic acid and hydrochloric acid catalysis and discussed why the acid catalyst induced a fluorescence redshift and improved the quantum yield of the CDs. Furthermore, the concentration-dependent photoluminescence behaviour of the CDs was characterized. CD/PVA composites emitting green to yellow light were obtained by exploiting the fluorescence tunability of CDs. Based on different light-emitting diode substrates, green, yellow and white light-emitting diodes with excellent performance were prepared.
June 2021
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89 Reads
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8 Citations
Molecules
Surplus lignin, which is inefficiently used, is generated in the forestry industry. Currently, most studies use lignin instead of phenol to synthesize thermosetting resins which cannot be reprocessed, thus affecting its application field. Thermoplastic phenolic resin has an orderly structure and excellent molding performance, which can greatly improve its application field and economic value. Herein, phenol was partially replaced with enzymolysis lignin (without treatment), generating lignin-based high-ortho thermoplastic phenolic resins (LPRs), and then lignin-based phenolic fibers (LPFs) were prepared by melt spinning. FTIR, 13C-NMR and GPC were used to characterize the ortho–para position ratio (O/P value), molecular weight and its distribution (PDI), and rheological properties of the resin. TG, XRD, SEM and tensile property studies were used to determine the thermal stability, orientation, and surface morphology of the fiber. Lignin addition resulted in the decline of the O/P value and molecular weight of the resin. For the 10% LPR, the O/P value, Mw, and PDI were 1.28, 4263, and 2.74, respectively, with the fiber exhibiting relatively good spinnability. The tensile strength and elongation at break of the 10% LPF were 160.9 MPa and 1.9%, respectively. The addition of lignin effectively improved the thermal properties of the fiber, and the carbon yields of 20% LPF before and after curing were 39.7% and 53.6%, respectively, which were 22.2% and 13.7% higher than that of the unmodified fiber, respectively.
... Nitrogen doping has been extensively performed using ammonia [72], melamine [73], urea [74], and heterocyclic nitrogen-rich biomass fractions for concurrent biochar production and activation. Pyrolysis facilitates nitrile formation and aryl amine incorporation. ...
May 2023
Journal of Environmental Chemical Engineering
... However, there are still few fluorescent sensors that can effectively detect Ru 3+ . Lin Xu et al. synthesized a CDs sensor to detect Ru 3+ using starch as a precursor material [35]. With the increase of temperature, the particle size of CDs first increased and then decreased, which was closely related to the quantum yield of CDs. ...
June 2022
... In this study, DEGs were identified between the healthy and diseased groups based on the selection criteria of |log2 Fold Change| >= 1 and false discovery rate (FDR) < 0.05 (Liu et al., 2020b;Shi et al., 2021). The total number of DEGs, as well as the number of upregulated and downregulated genes, were determined for each comparison between different samples, and all DEGs were included in subsequent analyses. ...
December 2021
Life
... The same tendency has also been observed for lignin-derived materials (Xua et al., 2018;Barra et al., 2022;Wu et al., 2022). Thermal treatment and carbonization of lignin-based resins are attractive topics for the research on porous carbons and carbon fibers (Ren et al., 2021). The thermal degradation of lignin is a complex process because of the variety of structural units with different decomposition pathways, including competitive and/or consecutive reactions. ...
June 2021
Molecules