Green synthesis of nitrogen-doped self-assembled porous carbon-metal oxide composite towards energy and environmental applications

Abstract

Increasing environmental pollution, shortage of efficient energy conversion and storage devices and the depletion of fossil fuels have triggered the research community to look for advanced multifunctional materials suitable for different energy-related applications. Herein, we have discussed a novel and facile synthesis mechanism of such a carbon-based nanocomposite along with its energy and environmental applications. In this present work, nitrogen-doped carbon self-assembled into ordered mesoporous structure has been synthesized via an economical and environment-friendly route and its pore generating mechanism depending on the hydrogen bonding interaction has been highlighted. Incorporation of metal oxide nanoparticles in the porous carbon network has significantly improved CO2 adsorption and lithium storage capacity along with an improvement in the catalytic activity towards Oxygen Reduction Reaction (ORR). Thus our present study unveils a multifunctional material that can be used in three different fields without further modifications.

One-step dry synthesis of an iron based nano-biocomposite for controlled release of drugs

“…6B(V) corresponds to pyridinic, pyrrolic and graphitic nitrogen respectively. 38,43 The presence of the Fe 3 O 4 in the nano Fe-CNB is conrmed due to the coexistence of Fe 3+ and Fe 2+ of Fe (2p 3/2 ) at binding energies 710.85 eV and 724.02 eV as observed in Fig. 6B(VI), whereas the presence of Fe 2 O 3 is attributed to peak at binding energies 714.47 eV for Fe 3+ oxidation state of Fe (2p 3/2 ).…”

“…6B. The survey spectra conrm the presence of C1s, O1s, S2p, N1s, and Fe2p 3 corresponding to the peaks at binding energies 283 eV, 530 eV, 168 eV, 400 eV and 700 eV respectively 38,39 as shown in the Fig. 6B(I).…”

“…6B(II), is deconvoluted into two components with binding energies 284.09 eV, 286.81 eV corresponding to the C-C/C]C and C-S/ C-O/C-N respectively. 38,40 The O1s peak is deconvoluted into two components with binding energies 531.05 eV, and 534.57 eV, as shown in Fig. 6B(III) is attributed to the Fe-O and C-O-C. 28,41 Similarly, Fig.…”

“…6B(VI), whereas the presence of Fe 2 O 3 is attributed to peak at binding energies 714.47 eV for Fe 3+ oxidation state of Fe (2p 3/2 ). 38 Thus, XPS conrms the existence of C-C/C]C, C-S/C-O/C-N, Fe-O, C-O-C, -C-S-, -C-SO xand pyridinic, pyrrolic and graphitic nitrogen respectively in the nano Fe-CNB. These results are in good agreement with HR-TEM ( Fig.…”

Synergy between Interconnected Porous Carbon-Sulfur Cathode and Metallic MgB2 Interlayer as a Lithium Polysulfide Immobilizer for High-Performance Lithium-Sulfur Batteries

“…Melamine consists of molecules like N–H···N bonds arranged in planar sheets, which are connected with HCO 3 – anions originating from bicarbonates forming bonds like N–H···O. 20 The self-assembly of porous sheets is promoted by sodium bicarbonate. 21 The sodium bicarbonate and glucose decompose at a high temperature, liberating CO 2 and H 2 O that lead to the formation of a porous network in the sample.…”