Facile hydrothermal synthesis of flower-like hematite microstructure with high photocatalytic properties

Abstract

Abstract:A flower-like hematite microstructure has been successfully prepared by a facile hydrothermal synthesis method without using any organic solvents or templates. It is revealed that the flower-like hematite microstructure consists of well-crystallized nanorods with the average diameter of about 100±15 nm and average length of about 900±100 nm growing from the centers. A possible growth mechanism of the flower-like α-Fe 2 O 3 microstructure is proposed and discussed. The photocatalytic properties of the synthesized flower-like hematite nanostructure are evaluated using the degradation of rhodamine B in aqueous solution.

Synthesis and Applications of Hematite α-Fe2O3 : a Review

“…with incoming direction [110]. Another synthesis declared that hydrothermal in which DI water dissolved the FeCl3 (0.015 mol) and NaNO3 (0.1 mol), and the solution that was heated in a closed glass bottle at 100°C for 2 hours produced uniform flower-like architecture with a diameter of 3-5μm [18]. Each structure consisted of many nanorods in parallel with the average diameter of around 100 nm and an average length of about 900 nm.…”

“…The interests focus on studies of hematite and hematite as photoelectric chemical solar cell material (PEC) [6], [8], [10], [11], [17], [21], and [22]. Besides, it is a cost-effective, environmentally friendly, and highly efficient approach, also demonstrating chemical stability above a wide pH range suitable for photocatalytic applications [9], [18]. The diameter size and porosity of hematite nanorods also affect the magnetization properties, which are more sensitive in particle less than 20 nm [13].…”

Surfactant‐assisted hydrothermal synthesis of NaTaO 3 nanotubes with enhanced photodegradation activity

“…The semiconductors can convert renewable light energy to chemical energy under the light irradiation, which provides a fascinating approach to eliminate the organic pollutants of wastewater. Many organic pollutants can be photodegraded successfully to safer end products such as water (H 2 O), carbon dioxide (CO 2 ) and mineral acids via semiconductor photocatalysis [4][5][6]. However, many photocatalysts reported have a dissatisfactory photocatalytic efficiency in the degradation of organic pollutants due to their inherent features such as high photogenerated holes-electron pair recombination, low redox ability and serious photocorrosion [7][8][9].…”

Peanut-Like Hematite Prepared by a New Facile Hydrothermal Process for Removal of As(V)

“…Adsorption efficiency is related to the specific surface area, morphology, and surface groups of adsorbents [5]. Different hematite morphologies, such as dots [6], rods [7], wires [8], arrays [9], tubes [10], belts [11], disks [12], rings [13], and flower-like shapes [14], have been obtained. Sugimoto et al [15] have synthesized hematite particles by the sol-gel method.…”