Bio-mass derived functionalized graphene aerogel: a sustainable approach for the removal of multiple organic dyes and their mixtures

Kaushik, Jaidev; Kumar, Vinit; Garg, Anjali; Dubey, Prashant; Tripathi, Kumud Malika; Sonkar, Sumit Kumar

doi:10.1039/d1nj00470k

Cited by 71 publications

(41 citation statements)

References 78 publications

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“…Three well-resolved peaks at 398.8, 399.8, and 401.1 eV (Figure i) can be allocated to pyridinic nitrogen, pyrrolic nitrogen, and graphitic nitrogen, respectively . The detailed O 1s spectrum in Figure j shows three distinct peaks at 531.55, 532.65, and 533.7 eV assigned to C–O, CO, and COO – , respectively. , …”

Section: Resultsmentioning

confidence: 99%

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N-Doped Carbon Nanorods from Biomass as a Potential Antidiabetic Nanomedicine

Park

Sharma

Kang

et al. 2022

ACS Biomater. Sci. Eng.

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Insufficient glucose control remains a critical challenge for type 2 diabetes mellitus (T2DM) patients with currently used therapeutic drugs, which can also have detrimental side effects. The facile synthesis of nitrogendoped carbon nanorods (N-CNRs) as therapeutic agents in a T2DM transgenic db/db mouse model is reported herein. N-CNRs are synthesized from silkworm powder without the assistance of any template and possess a hollow graphitic nature, rough surface, and good aqueous solubility, which make them ideal candidates for fabricating nanomedicines. N-CNRs are employed to reduce fasting blood glucose and ameliorate serum biomarker levels linked to oxidative stress and inflammation. Interestingly, through the downregulation of enhanced expression of glutathione peroxidase, superoxide dismutase, and catalase as well as inflammatory responses, N-CNRs reverse pancreatic dysfunction and normalize the secretory functions of pancreatic cells. Moreover, hepatic steatosis is attenuated by downregulating lipogenesis and increasing fatty acid oxidation. This finding may help in designing novel therapeutics for T2DM treatment.

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Section: Resultsmentioning

confidence: 99%

“…43 The detailed O 1s spectrum in Figure 1j shows three distinct peaks at 531.55, 532.65, and 533.7 eV assigned to C−O, CO, and COO − , respectively. 43,45 2.2. Hyperglycemia Amelioration Testing of N-CNRs in db/db Diabetic Mice.…”

Section: Resultsmentioning

confidence: 99%

N-Doped Carbon Nanorods from Biomass as a Potential Antidiabetic Nanomedicine

Park

Sharma

Kang

et al. 2022

ACS Biomater. Sci. Eng.

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“…The generation of various oxidative species over the 20%SnO 2 @MCr photocatalyst was probed by the electron spin resonance (ESR) technique [43,44]. The characteristic peaks of DMPO-•O 2 − and DMPO-•OH were not observed under dark conditions but appeared under light irradiation (Figure 12a,b).…”

Section: Possible Photocatalytic Mechanismmentioning

confidence: 99%

Assembling Ultrafine SnO2 Nanoparticles on MIL-101(Cr) Octahedrons for Efficient Fuel Photocatalytic Denitrification

Liang

Wang

et al. 2021

Molecules

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Effectively reducing the concentration of nitrogen-containing compounds (NCCs) remains a significant but challenging task in environmental restoration. In this work, a novel step-scheme (S-scheme) SnO2@MCr heterojunction was successfully fabricated via a facile hydrothermal method. At this heterojunction, MIL-101(Cr) octahedrons are decorated with highly dispersed SnO2 quantum dots (QDs, approximate size 3 nm). The QDs are evenly wrapped around the MIL-101(Cr), forming an intriguing zero-dimensional/three-dimensional (0D/3D) S-scheme heterostructure. Under simulated sunlight irradiation (280 nm < λ < 980 nm), SnO2@MCr demonstrated superior photoactivity toward the denitrification of pyridine, a typical NCC. The adsorption capacity and adsorption site of SnO2@MCr were also investigated. Tests using 20%SnO2@MCr exhibited much higher activity than that of pure SnO2 and MIL-101(Cr); the reduction ratio of Cr(VI) is rapidly increased to 95% after sunlight irradiation for 4 h. The improvement in the photocatalytic activity is attributed to (i) the high dispersion of SnO2 QDs, (ii) the binding of the rich adsorption sites with pyridine molecules, and (iii) the formation of the S-scheme heterojunction between SnO2 and MIL-101(Cr). Finally, the photocatalytic mechanism of pyridine was elucidated, and the possible intermediate products and degradation pathways were discussed.

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“…In recent decades, organic pollutants have attracted widespread attention because of their potential hazards to human health and their hardly degradable characteristics by traditional techniques over the past few decades [1][2][3]. Great efforts have been made to address this problem.…”

Section: Introductionmentioning

confidence: 99%

Efficient Dye Contaminant Elimination and Simultaneously Electricity Production via a Bi-Doped TiO2 Photocatalytic Fuel Cell

Dong

Zhao

et al. 2022

Nanomaterials

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TiO2 develops a higher efficiency when doping Bi into it by increasing the visible light absorption and inhibiting the recombination of photogenerated charges. Herein, a highly efficient Bi doped TiO2 photoanode was fabricated via a one-step modified sol-gel method and a screen-printing technique for the anode of photocatalytic fuel cell (PFC). A maximum degradation rate of 91.2% of Rhodamine B (RhB) and of 89% after being repeated 5 times with only 2% lost reflected an enhanced PFC performance and demonstrated an excellent stability under visible-light irradiation. The excellent degradation performance was attributed to the enhanced visible-light response and decreased electron-hole recombination rate. Meanwhile, an excellent linear correlation was observed between the efficient photocurrent of PFC and the chemical oxygen demand of solution when RhB is sufficient.

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Bio-mass derived functionalized graphene aerogel: a sustainable approach for the removal of multiple organic dyes and their mixtures

Abstract: Herein, fabrication of a functionalized graphene aerogel (f-GA) from a biomass (pear fruit)-derived graphene aerogel (GA) is described. f-GA is showing better adsorption capacity towards CV, MB and RhB dyes than GA and activated charcoal.

Cited by 71 publications

References 78 publications

N-Doped Carbon Nanorods from Biomass as a Potential Antidiabetic Nanomedicine

N-Doped Carbon Nanorods from Biomass as a Potential Antidiabetic Nanomedicine

Assembling Ultrafine SnO2 Nanoparticles on MIL-101(Cr) Octahedrons for Efficient Fuel Photocatalytic Denitrification

Efficient Dye Contaminant Elimination and Simultaneously Electricity Production via a Bi-Doped TiO2 Photocatalytic Fuel Cell

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