Visible light photocatalytic degradation of methylene blue by SnO2 quantum dots prepared via microwave-assisted method

Highlights on advances in SnO2 quantum dots: insights into synthesis strategies, modifications and applications

“…Recently, microwave-assisted synthetic technique has been applied to prepare SnO 2 QDs [17,[50][51][52][53][54][55][56][57]. For examples, Liu et al [57] have synthesized SnO 2 QDs with diameters of 3-5 nm by microwave irradiating the solution of SnCl 4 •5H 2 O and alkaline. In this work, a dilute NaOH solution was dropped into 20 mL solution of 0.1 M SnCl 4 •5H 2 O until the pH value of the mixed solution reached 5.…”

“…In recent years, many groups have dedicated themselves to the photocatalytic performances of pure SnO 2 QDs [50,53,54,57,[137][138][139][140]. Liu et al [57] have studied the photocatalytic activity of SnO 2 QDs with diameters of 3-5 nm on the degradation of methylene blue under visible light irradiation. The SnO 2 QDs exhibited a good photocatalytic activity with a degradation rate of 90% on methylene blue after 240 min.…”

Construction of SnS2–SnO2 heterojunctions decorated on graphene nanosheets with enhanced visible-light photocatalytic performance

“…As a typical n-type semiconductor, SnO 2 has become one of the representatives of semiconductor photocatalysts due to its nontoxicity, low cost and excellent optical electrical properties (Park et al, 2014). For instance, Liu et al (2013) found that SnO 2 quantum dots with a diameter of 3-5 nm displayed an excellent photodegradation efficiency of the organic dye methylene blue (MB), even better than that of commercial P25. Seema et al (2012) reported that the SnO 2 /graphene composite exhibited an enhanced catalytic degradation performance for MB under sunlight irradiation.…”

Microwave-assisted Synthesis of Semiconductor Nanomaterials for Energy Storage

“…Microwave irradiation as an inexpensive, quick, clean, and versatile technique can facilitate mass production in a short time with little energy consumption and form an intimate contact between the components [7][8][9][10]. Many semiconductor nanomaterials with different morphologies such as nanorods, nanowires, nanofibers, nanotubes, nanosheets and nanoparticles have been synthesized by the microwaveassisted method [11][12][13][14][15][16][17][18][19][20][21][22][23].…”