A biogenic TiO2-C-O nanohybrid grown from a Ti4+-polymer complex in green tissues of chilis, interface bonding, and tailored photocatalytic properties

Rajeswari, P.; Tiwari, Barkha; Ram, S.; Pradhan, Debabrata

doi:10.1007/s10853-017-1763-5

Cited by 12 publications

(3 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure a shows the layers of graphite sheets more in region A (darker) and less in region B (brighter) similarly in Figure b, which exhibits thin sheets of graphite-like carbon grafted with small carbon nitride crystallites marked as A and B on carbon sheet C, which has a d -spacing of 0.3344 nm for the (343) crystallographic plane (fringe formed due to interference of light refracted from carbon nitride lattice and graphite layers). Thus, from the literature, O 2– inclusion as in a graphitized C–O network markedly gets stretched to over a d -spacing of 0.3356 nm for the (002) plane in the pure graphite. , A C-sp 2 graphitic network thus expands via co-bonding with N 2– and O 2– on carbon plates, which adapts concurrently as foresaid using Raman and FTIR bands in softer phonons. Figure c shows the carbon nitride crystallites of sizes 20–50 nm bonding to the graphite layered sheets of carbon.…”

Section: Resultsmentioning

confidence: 85%

“…Thus, from the literature, O 2– inclusion as in a graphitized C–O network markedly gets stretched to over a d -spacing of 0.3356 nm for the (002) plane in the pure graphite. 33,34 A C-sp 2 graphitic network thus expands via co-bonding with N 2– and O 2– on carbon plates, which adapts concurrently as foresaid using Raman and FTIR bands in softer phonons. Figure 6c shows the carbon nitride crystallites of sizes 20–50 nm bonding to the graphite layered sheets of carbon.…”

Section: Resultsmentioning

confidence: 96%

See 1 more Smart Citation

Biogenic Synthesis of Graphitic Carbon Nitride for Photocatalytic Degradation of Organic Dyes

Tiwari

Ram

2019

ACS Omega

Self Cite

View full text Add to dashboard Cite

A simple approach of template growth of graphitic-carbon nitride (g-CN), a polymeric unit consisting of C, N, O, and H elements derived from extracts of green plant Aloe vera , which are rich in several chemical constituents, has been successfully experimented in this work. Comparing several other methods used for synthesizing g-CN involving a large amount of toxic components, here, we propose the simplest route economically and environmentally highly viable for near future. Green plants are highly rich in natural carbon and nitrogen compounds, such as acemannan, glucose, aloin, protein, etc. Way before g-CN research, many carbon-based materials have been synthesized for multifunctional properties, but g-CN has much benefit over them due to the presence of elements such as C, N, O, and H, thus making it electron-rich. Multifunctional properties of graphitic-carbon nitride interface bonding as a supercapacitor or as a metal-free catalyst thus help degrade dyes. Violet-blue broad band emission was even noticed when excited at 240 nm via C–C bonding (π–π* transition) in the absorption band with an extinction coefficient of ∼10 4 M –1 cm –1 . With our research, we want to pave new ways of synthesizing such materials present in our nature in a biological form, which can protect our environment, thus causing less harm to mankind.

show abstract

Section: Resultsmentioning

confidence: 85%

Section: Resultsmentioning

confidence: 96%

Biogenic Synthesis of Graphitic Carbon Nitride for Photocatalytic Degradation of Organic Dyes

Tiwari

Ram

2019

ACS Omega

Self Cite

View full text Add to dashboard Cite

show abstract

“…Qualitatively, the first two bands observed at 528.9 eV and 529.6 eV in strong intensities attribute to O 2− species occupying the two kinds of the oxide polygons of CaO 4 6− and InO 6 9− respectively as per their ratio 1:2 in a spinel CaIn 2 O 4 structure. Thus, a weak satellite band observed at 530.3 eV (or 531.8 eV in the undoped sample) can be assigned to the surface O 2− species present as functionalized groups, like C=O, C-O, or CHO [33][34][35], in a conjoint C-sp 2 surface layer of a stable network on the individual crystallites in a hybrid core-shell structure. It is a hybrid core-shell structure that finely tunes the E b values and intensities in the three distinct overlapping O1s bands in a wide O1s distribution of electrons in the different sites in the lattice in this example.…”

Section: Xps Bands Of Eu 3+ Doped C-cain 2 O 4 Crystallitesmentioning

confidence: 99%

Optical properties of heat-treated hierarchical structure of Eu3+ modified C-CaIn2O4 of small core–shell crystallites

Tiwari

Ram

2020

SN Appl. Sci.

View full text Add to dashboard Cite

A natural aloe-vera gel is promptly bridging the Eu 3+ , Ca 2+ and In 3+ species in a bio-complex of a polymer network, so as it yields a sample Eu 3+ :CaIn 2 O 4 of small crystallites bonding over a grafted C-sp 2 surface layer when it is burnt in a selfpropagating combustion in air. The Eu 3+ doped C-CaIn 2 O 4 sample appears in a core-shell structure in part of the carbon forming a conjoint surface layer (shell) thereon of the individual crystallites in a hybrid nanostructure. The results are analyzed in terms of XRD patterns, phonon bands (in IR and Raman spectra), XPS bands, and hierarchical microstructure in the samples prepared with different Eu 3+ dosages in finely tuning the microstructure and optical properties as useful for an efficient phosphor, optical display system, visible lasers, energy-converters, photocatalysts, optical imaging, medical tools, and several others. A partial Eu 3+ → In 3+ doping in a crystal lattice CaIn 2 O 4 clearly reflects in a marked expansion of the lattice, as much as 2.2% found in the Eu 3+ content progressively raised to 2.0 mol% in a tailored hybrid composite structure. An inbuilt C-sp 2 shell structure of the crystallites is characterized in terms of its characteristic phonon bands in a conjoint polymer network, which are accounted well in modified XPS bands in the surface species.* Barkha Tiwari, barkha@matsc.iitkgp.ernet.in | Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

show abstract

Application of Nano-biotechnology in Wastewater Treatment: An Overview

Saraswat

2022

Water Science and Technology Library

View full text Add to dashboard Cite

A biogenic TiO2-C-O nanohybrid grown from a Ti4+-polymer complex in green tissues of chilis, interface bonding, and tailored photocatalytic properties

Cited by 12 publications

References 45 publications

Biogenic Synthesis of Graphitic Carbon Nitride for Photocatalytic Degradation of Organic Dyes

Biogenic Synthesis of Graphitic Carbon Nitride for Photocatalytic Degradation of Organic Dyes

Optical properties of heat-treated hierarchical structure of Eu3+ modified C-CaIn2O4 of small core–shell crystallites

Application of Nano-biotechnology in Wastewater Treatment: An Overview

Contact Info

Product

Resources

About