Chromium basic sulfate (Cr2(OH(SO4)3)) is mainly used to tan leather; it oxidizes the organic materials of the hide, reducing and precipitating inside the tissue as Cr2O3 or Cr(OH)3 compounds, which soften the leather and work as mordant for the subsequent coloring process. Soil, and ...
Iqbal S (2020) Spatial charge separation and transfer in L-cysteine capped NiCoP/CdS nano-heterojunction activated with intimate covalent bonding for high-quantum-yield photocatalytic hydrogen evolution. Appl Catal B 274:119097 Article Google Scholar Bahadur A, Saeed A, Iqbal S, Shoaib M, Ahmad...
For the investigation of the ionic strength effect several species have been used. This procedure is crucial due to the presence of adverse ions in industrial wastewater with high concentrations. So, to study the effect of ionic strength the following species are used: CH3COONa, EDTA, and Ca(NO...
For the investigation of the ionic strength effect several species have been used. This procedure is crucial due to the presence of adverse ions in industrial wastewater with high concentrations. So, to study the effect of ionic strength the following species are used: CH3COONa, EDTA, and Ca(NO...
Because of the strong protonation, the adsorbent surface becomes positively charged at low pH. The Cr(VI) adsorption was enhanced due to the electrostatic force between negatively-charged HCrO4−and Cr2O7–2and SO3−of ARS and the positively charged adsorbent surface. Thus, this, in turn...
Write the empirical formula of at least four binary ionic compounds that could be formed from the following ions: $$Ca^{2+},\ Cr^{4+},\ F^-,\ O^{2-} $$ Empirical formula Empirical formula of a compound is the simplest re...
the Co-free orthorhombic perovskite phase La0.3Ca0.7Fe0.7Cr0.3O3−δ (LCFCr) has been proposed as an ideal alternative, since it is structurally and chemically stable over a wide pO2 range (0.21 atm–10−20 atm) and shows excellent electrochemical activity towards both ORRs ...
研究M<SUB>2</SUB>SiC相的结构、电子特性、弹性和热性能(M为3 d, 4 d和5 d前过渡金属)。分析Ti、V、Cr、Zr、Nb、Mo、Hf、Ta 和W价电子浓度(VEC)对这些性能的影响。每个系列金属在VEC值约为8.5时弹性常数C44达到饱和。Hf-s、Ta-s 和 W-s电子主要在费米能级对态密度有贡献,可
or acceptor (holes) level in the band gap of such materials, they are eithern- orp-type, with carrier concentration (n, p) and optical band gap (\({E}_{g}\)) typically around 1016–1021cm−3and 3 eV, respectively. The most employed TCOs at industrial scale—Sn-doped In2O3(ITO...
3.8 The mechanisms of the biosorption Biosorption involves different mechanisms such as com- plexation/chelation, ion exchange, electrostatic attraction, covalent forces, van der Waals forces, surface adsorption and even precipitation or crystallisation. Sometimes, more 13 Biomass Conversion and ...