Silica Aerogel-supported Hydrozincite and Carbonate-intercalated Hydrotalcite for High-efficiency Removal of Pb(II) Ions by Precipitation Transformation Reactions

Table 4 Comparison of Pb(II) adsorption capacities of SA-Zn-HZ and SA-Zn₃Al-HT with other inorganic adsorbents

Adsorbents	Q _max ^a (mg g⁻¹)	Reference	Adsorbents	Q _max ^a (mg g⁻¹)	Reference
SA-Zn-HZ	684.9	This work	Fe₃O₄@Zr(OH)_x	310.8	[43]
SA-Zn₃Al-HT	555.6	This work	GO (19.2 kGy)	636.4	[44]
Mg₂Al-LS-HT	142.8	[35]	EDTA-modified GO	479.0	[45]
Fe₃O₄/GO/Mg₃Al-HT	173.0	[24]	Graphene aerogel	373.8	[46]
MnO₂-HT	49.9	[47]	Activated carbon	26.5	[48]
HT-Cl	250.5	[27]	MgFe₂O₄	113.7	[49]
CoMo HT	73.4	[50]	Fe₂O₃@AlOOH	84.1	[51]
Al(OH)₃/PAA-co-PAM	106.2	[52]	Fe₃O₄@SiO₂-EDTA	114.9	[53]
NC/FeMg HT	344.8	[1]	CNTs/CoFe₂O₄	140.1	[54]
g-C₃N₄	65.6	[13]	C nanofibers	795.7	[15]
WO_x/C	1224.7	[14]	MoS₂/rGO	412.8	[12]

^aCalculated from the Langmuir isotherm model for Pb(II) adsorption onto adsorbents