Synthesis, Characterization, and Application of Co-Al-Zn Layered Double Hydroxide/Hydrochar Composite for Simultaneous Removal of Cationic and Anionic Dyes

Table 7

Comparison of adsorption capacity with other LDH and HC composites.

Adsorbents	Name of dyes	Dye sorption capacity (mg g^−1)	Reference
Magnetic graphene oxide nanocomposite	Cationic dye (methylene blue)	64.23	[35]
MgAl-LDH/biochar composites	Cationic dye (methylene blue)	406.47	[18]
NiFe-LDH nanosheet/carbon fiber nanocomposite	Anionic dye (methyl orange and congo red)	323.6 and 448.4	[36]
Diatomite supported layered double hydroxide	Anionic dyes (tartrazine and erythrosine dyes)	555.6 and 625.2	[37]
Magnetite/layered double hydroxide composite	Anionic dye (reactive black)	150.239	[38]
Nanoporous composites of activated carbon-metal organic frameworks	Anionic dyes (direct red 31 and acid blue 92)	500 and 476	[39]
LDH/HC composite	Cationic dye (methylene blue) anionic dyes (methyl orange and reactive yellow-II)	441, 99.5 and 4272	Present study