Synchronous and rapid preparation of lignin nanoparticles and carbon quantum dots from natural lignocellulose

Si, Mengying; Zhang, Jin; He, Yu-yang; Yang, Ziqi; Xu, Yan; Liu, Mingren; Zhuo, Shengnan; Wang, Sheng; Min, Xin; Gao, Congjie; Chai, Liyuan; Shi, Yan

doi:10.1039/c8gc00744f

Cited by 133 publications

(64 citation statements)

References 48 publications

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“…The N‐doped BCDs were prepared to have a size of 19 nm and a quantum yield of up to 46%. N‐doped BCDs were prepared by a one‐step microwave method using natural lignocellulosic as a carbon source in an ethanol–water cosolvent and an acid catalyst system. The prepared BCDs have a diameter distribution ranging from 2 to 3 nm and an average diameter of about 2.6 nm.…”

Section: Methods For the Synthesis Of Bcdsmentioning

confidence: 99%

Biomass‐Derived Carbon Dots and Their Applications

Meng

Bai

Wang

et al. 2019

Energy & Environ Materials

409

179

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Carbon dots (CDs) have received much attention due to their superior properties including water solubility, low toxicity, biocompatibility, small size, fluorescence, and ease of modification. The use of a more environmentally friendly method to prepare high‐quality CDs is still an urgent question waiting for solve. The use of renewable, inexpensive, and green biomass resources not only meets the urgent need for large‐scale synthesis biomass CDs (BCDs), but also promotes the development of sustainable applications. In this article, we summarize the representative methods for synthesizing BCDs in green and simple ways using biomass as a carbon source, including hydrothermal carbonization, and microwave, pyrolysis. The prepared BCDs have a uniform particle size distribution and a relatively high throughput, which provide a method to scale up industrial production. Moreover, the integration of specific optical properties, that is, tunable photoluminescence and up‐photoluminescence, has led to remarkable use in bioimaging, sensing, and drug delivery. But the current review is not particularly comprehensive for BCDs. Therefore, we now provide a review focusing on the synthesis, properties, and recent advances in BCDs in biosensing, bioimaging, optoelectronics, and catalytic applications.

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Section: Methods For the Synthesis Of Bcdsmentioning

confidence: 99%

Biomass‐Derived Carbon Dots and Their Applications

Meng

Bai

Wang

et al. 2019

Energy & Environ Materials

409

179

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“…Biomass lignin, an aromatic polymer containing a structural unit of oxyphenylpropanol or its derivatives, is the second mosta bundant naturalm acromolecular organic materiali nt he world. [34][35][36] It has a high carbon content and abundantc hemical energy and is widely presenti ng ymnosperms, angiosperms, and all vascular plants, whereas industrial biomass lignin mainly includes lignosulfonate, sulfate lignin, and alkali lignin. [37][38][39] As an alternative precursor, lignin has been converted to high-valuable nanoscale fluorescent materials in previous work.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Synthesis of Bright Green Fluorescent Nitrogen‐Doped Carbon Quantum Dots from Alkali Lignin

et al. 2019

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Sustainable, inexpensive, and environmentally friendly biomass waste can be exploited for large‐scale production of carbon nanomaterials. Here, alkali lignin was employed as a precursor to synthesize carbon quantum dots (CQDs) with bright green fluorescence through a simple one‐pot route. The prepared CQDs had a size of 1.5–3.5 nm, were water‐dispersible, and showed wonderful biocompatibility, in addition to their excellent photoluminescence and electrocatalysis properties. These high‐quality CQDs could be used in a wide range of applications such as metal‐ion detection, cell imaging, and electrocatalysis. The wide range of biomass lignin feedstocks provide a green, low‐cost, and viable strategy for producing high‐quality fluorescent CQDs and enable the conversion of biomass waste into high‐value products that promote sustainable development of the economy and human society.

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“…demonstrated that carbon dots could be synthesized from rice straw by a microwave‐assisted one‐pot strategy in an acid‐catalyzed ethanol–water cosolvent system. Moreover, N‐doped carbon dots with 46 % quantum yield and strong purple fluorescence could be obtained by doping nitrogen from protein into the carbon dots during the microwave irradiation process . Shi et al.…”

Section: Bioimagingmentioning

confidence: 99%

Lignin‐Based Micro‐ and Nanomaterials and their Composites in Biomedical Applications

Dai

et al. 2020

ChemSusChem

164

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Lignin, as the most abundant aromatic renewable biopolymer in nature, has long been regarded as waste and simply discarded from the pulp and paper industry. In recent years, with many breakthroughs in lignin chemistry, pretreatment, and processing techniques, a lot of the inherent bioactivities of lignin, including antioxidant activities, antimicrobial activities, biocompatibilities, optical properties, and metal‐ion chelating and redox activities, have been discovered and this has opened a new field not only for lignin‐based materials but also for biomaterials. In this Review, the biological activities of lignin and drug/gene delivery and bioimaging applications of various types of lignin‐based material are summarized. In addition, the challenges and limitations of lignin‐based materials encountered during the development of biomedical applications are also discussed.

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Synchronous and rapid preparation of lignin nanoparticles and carbon quantum dots from natural lignocellulose

Abstract: A rapid one-pot microwave-assisted strategy toward the synchronous preparation of two nano-biomaterials with different scales: lignin nanoparticles and carbon nanodots.

Cited by 133 publications

References 48 publications

Biomass‐Derived Carbon Dots and Their Applications

Biomass‐Derived Carbon Dots and Their Applications

Sustainable Synthesis of Bright Green Fluorescent Nitrogen‐Doped Carbon Quantum Dots from Alkali Lignin

Lignin‐Based Micro‐ and Nanomaterials and their Composites in Biomedical Applications

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