Table 1 Chemicals and instrumentations.

From: Inclusion of bimetallic Fe0.75Cu0.25-BDC MOFs into Alginate-MoO3/GO as a novel nanohybrid for adsorptive removal of hexavalent chromium from water

Chemicals

Chemical formula

Company

Molar mass (g/mol)

Assay

Graphite powder

C

NICE CHEMICALS

12.01

Particle size (150mesh): 99.5%

Potassium permanganate

KMnO4

BDH Chemicals Ltd

158.03

 ≥ 99.0%,

Terephthalic acid (H2BDC)

C8H6O4

Merck

166.13

 ≥ 98.0%

N,N Dimethylformamide (DMF)

C3H7NO

SDFCL fine-chem

73.09

99.0%

Iron(III) chloride hexahydrate

FeCl3.6H2O

Alpha chemika

270.3

99.0%

Copper nitrate trihydrate

Cu(NO3)2.3H2O

Merck

241.60

99.5%

Sodium alginate

C6H7O6Na

Alfa Aesar, UK

216.12

 ≥ 99.0%

Molybdenum trioxide

MoO3

VEB laborchemie Apolda

143.94

99.5%

Glutaldehyde

C5H8O2

BDH chemicals Ltd. England

100.11

 > 95.0%

1,5-Diphenylcarbazide

C13H14N4O

Sigma-Aldrich

242.28

 ≥ 99.0%

Sulfuric acid

H2SO4

Sigma-Aldrich

98.07

98.0%

Sodium hydroxide

NaOH

Riedel de Haen, Germany

40.00

 ≥ 99.0%

Hydrochloric acid (HCl)

HCl

Sigma Aldrich,USA

36.46

37.0% (w/w)

Sodium chloride

NaCl

VWR international Ltd

58.44

99.5%

Measurements

The model of the instrument

UV–Vis spectrophotometer

Unico UV– Vis-7200

pH values

Adwa pH-meter

microwave oven

KOG-1B5H, Korea, 1400 W and 2.45 GHZ

Fourier transform infrared (FT-IR)

BRUKER Tensor 70

Scanning electron microscope (SEM)

JEOL-JSM-5300

High Resolution Transmission Electron Microscope (HR-TEM)

JEOL- JSM

X-ray diffraction (XRD)

JED-2300 T model

Thermal gravimetric analysis (TGA)

Linseis STA PT1000