Carbon dots coated on amine functionalized cellulose sponge for the adsorption of the toxic herbicide atrazine

Nagarajan, Durgadevi; Varada, Olappamanna Mana; Venkatanarasimhan, Swarnalatha

doi:10.1016/j.matpr.2020.08.071

Cited by 14 publications

(4 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Chemical adsorption (pseudo‐second‐order kinetic model) can be described as an adsorbent and adsorbate connection through strong chemical bonds. [ 42,43 ]…”

Section: Resultsmentioning

confidence: 99%

Carbon dots crosslinked chitosan/cellulose sponge capture of methyl blue by an adsorption process

Yuan

Zhu

et al. 2021

Luminescence

View full text Add to dashboard Cite

For environmental protection, organic dyes and solvents of industrial wastewater must be eliminated. Here, a citric acid‐based carbon dots (CA‐CDs) crosslinked chitosan/microcrystalline cellulose (CS/MCC/CA‐CDs) sponge was synthesized to study its adsorption performance for methyl blue (MB) dye. The morphology of the sponge was a tangled fibre with a bundle formed by hydrogen bonds between CA‐CDs and the CS/MCC composite matrix. The abundant amount of tangled fibre bundle units can offer plentiful active adsorption sites to collect the dye molecules. The adsorption capacity of the CS/MCC/CA‐CDs sponge toward MB was 306.8 mg/g at pH 10 and a temperature of 298 K. In addition, the pseudo‐second‐order kinetic model was matched with the adsorption kinetic experimental data, and the adsorption isotherm data can be described by the Langmuir models. This study proposed that the CS/MCC/CA‐CDs sponge adsorbent creates tremendous potential application value in wastewater treatment due to its fast kinetics, high adsorption capacity, simple preparation, and eco‐friendly properties.

show abstract

“…Chemical adsorption (pseudo‐second‐order kinetic model) can be described as an adsorbent and adsorbate connection through strong chemical bonds. [ 42,43 ]…”

Section: Resultsmentioning

confidence: 99%

Carbon dots crosslinked chitosan/cellulose sponge capture of methyl blue by an adsorption process

Yuan

Zhu

et al. 2021

Luminescence

View full text Add to dashboard Cite

show abstract

“…IR is a broadly employed technique for characterizing the chemical functionalities of CDs [170,171]. IR can not only evaluate the carbonyl (C=O) and hydroxyl (-OH) groups on the surface of CDs, but it can also determine the heteroatoms doped on their surface [172][173][174]. Significant illustrations of IR analysis involving the recognition of the existence of boronic acid (B-N and B-O), phosphates (P=O and P-OR), organosiloxane (Si-OSi/Si-O-C), alkyl sulfide (C-S), and amide/amine (-CN/NH 2 ) functionalities on the CDs' surface provides confirmation about the incorporation of boron (B), phosphorus (P), silicon (Si), sulfur (S), and nitrogen (N), respectively [155].…”

Section: Infrared Spectroscopymentioning

confidence: 99%

Carbon Dots: Classification, Properties, Synthesis, Characterization, and Applications in Health Care—An Updated Review (2018–2021)

2021

View full text Add to dashboard Cite

Carbon dots (CDs) are usually smaller than 10 nm in size, and are meticulously formulated and recently introduced nanomaterials, among the other types of carbon-based nanomaterials. They have gained significant attention and an incredible interest in the field of nanotechnology and biomedical science, which is merely due to their considerable and exclusive attributes; including their enhanced electron transferability, photobleaching and photo-blinking effects, high photoluminescent quantum yield, fluorescence property, resistance to photo-decomposition, increased electrocatalytic activity, good aqueous solubility, excellent biocompatibility, long-term chemical stability, cost-effectiveness, negligible toxicity, and acquaintance of large effective surface area-to-volume ratio. CDs can be readily functionalized owing to the abundant functional groups on their surfaces, and they also exhibit remarkable sensing features such as specific, selective, and multiplex detectability. In addition, the physico-chemical characteristics of CDs can be easily tunable based on their intended usage or application. In this comprehensive review article, we mainly discuss the classification of CDs, their ideal properties, their general synthesis approaches, and primary characterization techniques. More importantly, we update the readers about the recent trends of CDs in health care applications (viz., their substantial and prominent role in the area of electrochemical and optical biosensing, bioimaging, drug/gene delivery, as well as in photodynamic/photothermal therapy).

show abstract

“…As bandas entre 1540 a 1475 cm -1 correspondem à deformação de CH2 do anel pirano; 1465 cm -1 a deformação C-H assimétrico dos grupos metoxila; 1431 cm -1 a deformação da ligação C-O-H; 1430 cm -1 a deformação C-O-H de álcoois no plano e entre 1430 a 1418 cm -1 a deformação do CH2 (Cai et al, 2019;Nagarajan et al, 2020). A banda 1386 cm -1 é característica de deformação C-H por vibração; 1348 a 1311 cm -1 deformação C-OH no plano; 1266 cm -1 deformação C-H; 1225 cm -1 C-OH no plano; 1159 cm -1 C-OH no plano; 1123 cm -1 C-O-C vibração de valência assimétrica; entre 1089 a 1014 cm -1 estiramentos C-C e C-O assimétricos do anel pirano; 1061 cm -1 deformação C-O em álcoois secundários.…”

Section: Espectroscopia No Infravermelho Por Transformada De Fourier -Ft-irunclassified

Celulose (Mangifera indica) modificada por melamina-sílica aplicada no tratamento de efluentes com precipitação quimicamente assistida

Junior

Figueiredo

Santos

et al. 2021

RSD

View full text Add to dashboard Cite

Este trabalho objetivou desenvolver um compósito a base de celulose, melamina e sílica. A celulose foi obtida dos resíduos de poda da Mangifera indica para o tratamento primário quimicamente assistido de efluentes da indústria têxtil. O compósito foi caracterizado por FT-IR, MEV, MET, TG-DTG e Potencial Zeta. O planejamento composto central foi aplicado para otimização da massa de compósito e tempo de contato na remoção de azul de metileno. O FT-IR mostrou que o compósito apresentou a banda para a melamina em 815 cm-1. O MEV e MET revelaram que na superfície do compósito há Nitrogênio da melamina, Silício e Sódio oriundos do catalisador. O TG-DTG mostrou que o compósito é termicamente mais estável que a celulose, com 65% de degradação. Pelo potencial zeta, valores de pH acima de 5 propiciam maior estabilização e incremento do caráter aniônico do compósito. Escolheu-se como a melhor condição para a aplicação 60 mg de compósito e 30 minutos de tempo de contato, com remoção de 88,6 ± 3,5% do azul de metileno. O estudo do pH revelou que acima de 5, o compósito é mais eficiente. O processo de adsorção do corante pelo material apresentou-se coerente ao modelo de Langmuir (R2 = 0,9921). Assim, o compósito de celulose-melamina-sílica desenvolvido foi eficaz na remoção do corante azul de metileno, apresentando-se como um material de baixo custo, biodegradável e eficiente, com potencialidades para a aplicação no tratamento dos efluentes da indústria têxtil.

show abstract

Carbon dots coated on amine functionalized cellulose sponge for the adsorption of the toxic herbicide atrazine

Cited by 14 publications

References 35 publications

Carbon dots crosslinked chitosan/cellulose sponge capture of methyl blue by an adsorption process

Carbon dots crosslinked chitosan/cellulose sponge capture of methyl blue by an adsorption process

Carbon Dots: Classification, Properties, Synthesis, Characterization, and Applications in Health Care—An Updated Review (2018–2021)

Celulose (Mangifera indica) modificada por melamina-sílica aplicada no tratamento de efluentes com precipitação quimicamente assistida

Contact Info

Product

Resources

About