Synthesis of α-Fe₂O₃ rhombus nanoplates for photocatalytic investigation of cationic and anionic dyes and antibacterial aspect

Figures & data

Figure 1. XRD pattern for the hematite α-Fe₂O₃-RNPs prepared by hydrothermal method.

Figure 2. (a-c) SEM micrographs of the resulting α-Fe₂O₃-RNPs products synthesized, (d) EDS of α-Fe₂O₃-RNPs sample prepared by the hydrothermal autoclave method.

Figure 3. FTIR spectra of the resulting α-Fe₂O₃-RNPs catalyst synthesized by hydrothermal method.

Figure 4. XPS of the α-Fe₂O₃-RNPs (a) survey spectrum, (b) core level of C 1s spectra, (c) core level O 1s spectra and (d) core level Fe 2p spectra.

Figure 5. (a) Plot of C/C₀ for the decolourization of MO and MB dyes under visible light irradiations. (b) α-Fe₂O₃-RNPs dosage effect, (c) Effect of the initial dye concentration on photocatalytic degradation of MO (d) Effect of the initial dye concentration on photocatalytic degradation of MB (e) Error bar graph of Photocatalytic activity of α-Fe₂O₃-RNPs against MO with cycling (f) Error bar graph of Photocatalytic activity of α-Fe₂O₃-RNPs against MO with cycling.

Figure 6. N₂ adsorption-desorption isotherm dispersal curves for surface area (inset) the pore dispersing curves of as-synthesized α-Fe₂O₃-RNPs catalyst.

Figure 7. (a) Photoluminescence spectra of α-Fe₂O₃-RNPs, (b) EIS spectra of the bare and α-Fe₂O₃ electrode.

Figure 8. Proposed antibacterial and anti-acne activity of α- Fe₂O₃-RNPs against selected pathogenic microbes.

Table 1. ZOI (mm) values of the synthesized α-Fe₂O₃-RNPs against the pathogenic microbe.

	1% Solution
	α-Fe2O3-RNPs
	powder (mg) +	Zone of Inhibition (mm) of			Zone of Inhibition (mm)
	DMSO (ml)	Gram-negative P. acne			Gram-positive E. faecium
Sr. No		25 μL	50 μL	100 μL	25 μL	50 μL	100 μL
1.	8.0 mg + 0.80 ml	12	11.5	12	17	13.25	13.5
2.	Control	No	No	No	No	No	No

*Control: Only DMSO solution was added to the disc.

* Disc diameter = 10mm

Data availability

Data will be made available on request.