Comparison of adsorption capacities of DR-81 via different adsorbent nanomaterials.

Pollutant	Adsorbent material	Optimized conditions	Adsorption capacity (mg g−1)	Reference
DR-81	Zn(ii)-MPIH	Time = 45 min	48.31	This study
		Dosage = 1 g L−1
		DR-81 conc. = 10 mg L−1
	Zr-MOF MIP-202	Time = 12 min	36.07	7
		Dosage = 1 g L−1
		DR-81 conc. = 10 mg L−1
	Zn Asp MOF	Time = 60 min	29.15	5
		Dosage = 1 g L−1
		DR-81 conc. = 10 mg L−1
	Kaolinite	Time = 120 min	26.55	53
		Dosage = 4 g L−1
		DR-81 conc. = 50 mg L−1
	Potato peel	Time = 50 min	10.40	54
		Dosage = 0.25 g L−1
		DR-81 conc. = 50 mg L−1
	Neem bark	Time = 50 min	8.40	54
		Dosage = 0.25 g L−1
		DR-81 conc. = 50 mg L−1