Specially designed B4C/SnO2 nanocomposite for photocatalysis: traditional ceramic with unique properties

Abstract

Boron carbide: A traditional ceramic material shows unique properties when explored in nano-range. Specially designed boron-based nanocomposite has been synthesized by reflux method. The addition of SnO 2 in base matrix increases the defect states in boron carbide and shows unique catalytic properties. The calculated texture coefficient and Nelson-Riley factor show that the synthesized nanocomposite has large number of defect states. Also this composite is explored for the first time for catalysis degradation of industrial used dyes. The degradation analysis of industrial pollutants such as Novacron red Huntsman (NRH) and methylene blue (MB) dye reveals that the composite is an efficient catalyst. Degradation study shows that 1 g/L catalyst concentration of B 4 C/SnO 2 degrades NRH and MB dye up to approximately 97.38 and 79.41%, respectively, in 20 min under sunlight irradiation. This water-insoluble catalyst can be recovered and reused.

Boron Neutron Capture Therapy Study of 10B Enriched Nanostructured Boron Carbide Against Cervical Cancer and Glioblastoma Cell Line

“…B 4 C possess high stability (chemical and physical) and attractive electronic structure. Due to low cost, this nanomaterial is more fascinating for various applications [11,12]. 10 B in B 4 C is the absorber of neutron.…”

Composition-Dependent Charge Transport in Boron Carbides Alloyed with Aromatics: Plasma Enhanced Chemical Vapor Deposition Aniline/Orthocarborane Films

“…Boron carbide films are of significant interest in applications such as neutron detection − and photocatalysis. , Recently, a class of such materials containing carborane icosahedra bonded to aromatic species, boron carbides alloyed with aromatic moieties, − has become of interest for such applications , due to enhanced electron–hole separation and drift carrier lifetimes compared to carborane-derived boron carbide films without aromatic content. − For example, plasma enhanced chemical vapor deposition (PECVD) films derived from orthocarborane and pyridine precursors exhibit an 850% increase in charge collection, on a per-B atom basis, compared to PECVD orthocarborane films without aromatic content, in zero bias neutron voltaic measurements. ,, Such aromatic moieties provide for π-bonded bridges between carborane icosahedra. − The detailed relationship between such chemical interactions and resulting charge transport properties, however, remains to be determined.…”

Synthesis of PVDF‐B4C mixed matrix membrane for ultrafiltration of protein and photocatalytic dye removal

“…Furthermore, due to its relatively low bandgap of about 1.5 eV and strong visible light response-ability, B 4 C has attracted lots of attention for the degradation of organic dyes. 20 Bao et al 21 found that the lifetime of photoexcited charge carriers in B 4 C being extracted from transient photoconductivity decay was much longer than the conventional semiconductors (e.g., diamond-like carbon, a-Se,) and could be up to 1 ms, ascribed to the unique structures of the icosahedron unit as well as the three-center two-electron bond. Furthermore, the structural relaxation through the self-induced distorting icosahedron in B 4 C can also generate new mid-gap states and concomitantly downshift its conduction band edge, which will improve the visible light absorption of B 4 C. 22 Liu et al 22 reported that the use of B 4 C serves as stable catalyst for visible-light photocatalytic H 2 O reduction.…”

“…The appealing electronic structure, physical and chemical stability coupled with its low cost makes B 4 C a more fascinating material for various applications. Furthermore, due to its relatively low bandgap of about 1.5 eV and strong visible light response‐ability, B 4 C has attracted lots of attention for the degradation of organic dyes 20 . Bao et al 21 found that the lifetime of photoexcited charge carriers in B 4 C being extracted from transient photoconductivity decay was much longer than the conventional semiconductors (e.g., diamond‐like carbon, a‐Se,) and could be up to 1 ms, ascribed to the unique structures of the icosahedron unit as well as the three‐center two‐electron bond.…”