Table 5.

Dye degradation by hausmannite under different light regions.

Dye	Morphology/Band gap	Light region	Degradation %	Irradiation time	References
Acridine Orange, (AO),	Mn3O4 nano structures	UV-visible	47.38	170 min	Aslam Jamal et al.
Alizarin yellow	β-MnO2, MnOOH nano rod and Mn3O4 octahedron(2.14, 1.81 and 1.72 ev respectively)	UV-visible	Beta MnO2 nanowire -98% Mn3O4 octahedron -62% MnO(OH) nanorods-54%	80 min	Khalid Abdelazez Mohamed Ahmed et al.
diphenylthiocarbazone	Mn3O4 nanobelts, Mn3O4 nano sheet, Mn3O4 nanoparticles (2.22, 1.98,1.91 ev respectively)	Visible	99% Mn3O4 nanobelts shows higher catalytic activity than sheets and NP	150 min	Khalid Abdelazez Mohamed Ahmed
Methylene blue	Mn3O4 NP	visible	80%	60 min	Atique Ullah
Methylene blue	Mn3O4 flower structure Mn3O4 nano particles Mn3O4 nano rods	UV light	73% 49% 62%	180 min	Yuli Wang
Brilliant cresyl blue	Al2O3 doped Mn3O4 Nano wire	Visible	50–65%	300 min	Safi Asim, Bin Asif
Alizarin Red	Mn3O4/dandelion structure	Visible	97%	120 min	Hasimur Rahaman et al.
Methylene blue and procion red	Mn3O4 NP	Visible	75%	1min	Al nakhib choudhury
Malachite green	Al doped Mn3O4 NP	UV light	90%	60 min	Dhanasekaran et al.
Methylene blue	V doped Mn3O4 NP	Visible light	82.5%	40 min	Samaneh. Ramezanpour
Methyl orange	Mn3O4, hierarchical porous network	Visible light	90%	10 min	Chengjun Dong