Gram-scale synthesis of single-crystalline graphene quantum dots derived from lignin biomass

Ding, Zheyuan; Li, Fengfeng; Wen, Jia‐Long; Wang, Xiluan; Sun, Run‐Cang

doi:10.1039/c7gc03218h

Cited by 289 publications

(212 citation statements)

References 66 publications

Supporting

Mentioning

197

Contrasting

Order By: Relevance

“…Compared with bamboo leaves, the quantum yield of BCDs prepared from ginkgo biloba leaves as carbon source has been greatly improved. In plants, besides bamboo leaves and ginkgo leaves, aloe, lignin biomass, and willow bark are also used as biomass carbon sources to prepare BCDs. The size distribution of BCDs was uniform, and the quantum yield of BCDs prepared with lignin biomass as carbon source was up to 21%.…”

Section: Methods For the Synthesis Of Bcdsmentioning

confidence: 99%

“…In plants, besides bamboo leaves and ginkgo leaves, aloe, lignin biomass, and willow bark are also used as biomass carbon sources to prepare BCDs. The size distribution of BCDs was uniform, and the quantum yield of BCDs prepared with lignin biomass as carbon source was up to 21%. In order to further improve the quantum yield, a simple and economical method was used to prepare BCDs by using gelatin and cocoon silk as carbon sources.…”

Section: Methods For the Synthesis Of Bcdsmentioning

confidence: 99%

See 1 more Smart Citation

Biomass‐Derived Carbon Dots and Their Applications

Meng

Bai

Wang

et al. 2019

Energy & Environ Materials

376

179

View full text Add to dashboard Cite

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.

show abstract

Section: Methods For the Synthesis Of Bcdsmentioning

confidence: 99%

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

376

179

View full text Add to dashboard Cite

show abstract

“…It has a high carbon content and abundant chemical energy and is widely present in gymnosperms, angiosperms, and all vascular plants, whereas industrial biomass lignin mainly includes lignosulfonate, sulfate lignin, and alkali lignin . As an alternative precursor, lignin has been converted to high‐valuable nanoscale fluorescent materials in previous work . For example, Rodríguez‐Padrón et al .…”

Section: Introductionmentioning

confidence: 99%

“…Compared with these carbon‐based materials, biomass wastes are renewable, cheap, C‐rich sources that can be classed as “green” because they aid in environmental protection . Although these methods are facile and easy to manipulate, there are still several issues that need to be solved, including the difficulty in accurately controlling the morphology, size, and defects of CQDs, weak visible absorption, and low fluorescence quantum yields (QYs) …”

Section: Introductionmentioning

confidence: 99%

“…This route can produce CQDs from small organic molecules through gradual chemical synthesis, pyrolysis, or carbonization . Currently, organic molecules are generally regarded as the most reliable precursors for the formation of high‐quality CQDs . However, most organic molecules are still expensive and pose challenges to the natural environment and human health: for instance, polycyclic aromatic hydrocarbons are strong carcinogens, and thus searching for low‐cost and environmentally friendly molecule precursors could boost their abundant applications .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

et al. 2019

View full text Add to dashboard Cite

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.

show abstract