Boron from net charge acceptor to donor and its effect on hydrogen uptake by novel Mg-B-electrochemically synthesized reduced graphene oxide

Abstract Hydrogen uptake (H-uptake) is studied in ball milled Mg-B-electrochemically synthesized reduced graphene oxide (erGO) nanocomposites at P H2 ≈ 15 bar, ~ 320 °C. B/C (weight ratio): 0, ~ 0.09, ~ 0.36, ~ 0.90 are synthesized maintaining erGO≈10wt %. B occupies octahedral interstices within Mg...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Marla V. V. Satya Aditya, Srikanta Panda, Sankara Sarma V. Tatiparti
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/98c1ed8aaa834416838b63c2f1cc2f25
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:98c1ed8aaa834416838b63c2f1cc2f25
record_format	dspace
spelling	oai:doaj.org-article:98c1ed8aaa834416838b63c2f1cc2f252021-12-02T16:53:19ZBoron from net charge acceptor to donor and its effect on hydrogen uptake by novel Mg-B-electrochemically synthesized reduced graphene oxide10.1038/s41598-021-90531-w2045-2322https://doaj.org/article/98c1ed8aaa834416838b63c2f1cc2f252021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90531-whttps://doaj.org/toc/2045-2322Abstract Hydrogen uptake (H-uptake) is studied in ball milled Mg-B-electrochemically synthesized reduced graphene oxide (erGO) nanocomposites at P H2 ≈ 15 bar, ~ 320 °C. B/C (weight ratio): 0, ~ 0.09, ~ 0.36, ~ 0.90 are synthesized maintaining erGO≈10wt %. B occupies octahedral interstices within Mg unit cell—revealed by electron density maps. Persistent charge donations from Mg and B to C appear as Mg-C (~ 283.2 eV), B-C (~ 283.3–283.9 eV) interactions in C-1s core X-ray photoelectron spectroscopy (XPS) at all B/C. At B/C > 0.09, charge reception by B from Mg yields Mg-B interaction. This net charge acceptor role of B renders it electron-rich and does not alter Mg unit cell size significantly. Despite charge donation to both C and B, the Mg charge is < + 2, resulting in long incubation times (> 5 h) at B/C > 0.09. At B/C≈0.09 the minimal Mg-B interaction renders B a charge donor, resulting in Mg-B repulsion and Mg unit cell expansion. Mg-C peak shift to lower binding energies (C-1s XPS), decreases incubation time to ~ 2.25 h and enhances H-uptake kinetics. Various atomic interactions influence the reduction of incubation time in H-uptake and increase its kinetics in the order: (Mg → C; B → C) B/C≈0.09, B: donor > (Mg → C) B/C=0 > (ternary Mg → B → C) B/C>0.09, B: acceptor.Marla V. V. Satya AdityaSrikanta PandaSankara Sarma V. TatipartiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Marla V. V. Satya Aditya Srikanta Panda Sankara Sarma V. Tatiparti Boron from net charge acceptor to donor and its effect on hydrogen uptake by novel Mg-B-electrochemically synthesized reduced graphene oxide
description	Abstract Hydrogen uptake (H-uptake) is studied in ball milled Mg-B-electrochemically synthesized reduced graphene oxide (erGO) nanocomposites at P H2 ≈ 15 bar, ~ 320 °C. B/C (weight ratio): 0, ~ 0.09, ~ 0.36, ~ 0.90 are synthesized maintaining erGO≈10wt %. B occupies octahedral interstices within Mg unit cell—revealed by electron density maps. Persistent charge donations from Mg and B to C appear as Mg-C (~ 283.2 eV), B-C (~ 283.3–283.9 eV) interactions in C-1s core X-ray photoelectron spectroscopy (XPS) at all B/C. At B/C > 0.09, charge reception by B from Mg yields Mg-B interaction. This net charge acceptor role of B renders it electron-rich and does not alter Mg unit cell size significantly. Despite charge donation to both C and B, the Mg charge is < + 2, resulting in long incubation times (> 5 h) at B/C > 0.09. At B/C≈0.09 the minimal Mg-B interaction renders B a charge donor, resulting in Mg-B repulsion and Mg unit cell expansion. Mg-C peak shift to lower binding energies (C-1s XPS), decreases incubation time to ~ 2.25 h and enhances H-uptake kinetics. Various atomic interactions influence the reduction of incubation time in H-uptake and increase its kinetics in the order: (Mg → C; B → C) B/C≈0.09, B: donor > (Mg → C) B/C=0 > (ternary Mg → B → C) B/C>0.09, B: acceptor.
format	article
author	Marla V. V. Satya Aditya Srikanta Panda Sankara Sarma V. Tatiparti
author_facet	Marla V. V. Satya Aditya Srikanta Panda Sankara Sarma V. Tatiparti
author_sort	Marla V. V. Satya Aditya
title	Boron from net charge acceptor to donor and its effect on hydrogen uptake by novel Mg-B-electrochemically synthesized reduced graphene oxide
title_short	Boron from net charge acceptor to donor and its effect on hydrogen uptake by novel Mg-B-electrochemically synthesized reduced graphene oxide
title_full	Boron from net charge acceptor to donor and its effect on hydrogen uptake by novel Mg-B-electrochemically synthesized reduced graphene oxide
title_fullStr	Boron from net charge acceptor to donor and its effect on hydrogen uptake by novel Mg-B-electrochemically synthesized reduced graphene oxide
title_full_unstemmed	Boron from net charge acceptor to donor and its effect on hydrogen uptake by novel Mg-B-electrochemically synthesized reduced graphene oxide
title_sort	boron from net charge acceptor to donor and its effect on hydrogen uptake by novel mg-b-electrochemically synthesized reduced graphene oxide
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/98c1ed8aaa834416838b63c2f1cc2f25
work_keys_str_mv	AT marlavvsatyaaditya boronfromnetchargeacceptortodonoranditseffectonhydrogenuptakebynovelmgbelectrochemicallysynthesizedreducedgrapheneoxide AT srikantapanda boronfromnetchargeacceptortodonoranditseffectonhydrogenuptakebynovelmgbelectrochemicallysynthesizedreducedgrapheneoxide AT sankarasarmavtatiparti boronfromnetchargeacceptortodonoranditseffectonhydrogenuptakebynovelmgbelectrochemicallysynthesizedreducedgrapheneoxide
_version_	1718382876521660416

Boron from net charge acceptor to donor and its effect on hydrogen uptake by novel Mg-B-electrochemically synthesized reduced graphene oxide

Ejemplares similares