Synthesis of nitrogen and sulfur co-doped reduced graphene oxide by hydrothermal method for fabrication of cathodes in dye-sensitized solar cells

A highly dispersed magnetic polymetallic catalyst to activate peroxymonosulfate for the degradation of organic pollutants in wastewater

“…37 Furthermore, the defect sites created by the heteroatom doping process would lead to more dense and disorganized features of GO, resulting in a fluffy physical appearance. 33,38 It could be seen from Fig. 1c that Zn 0.5 Ni 0.5 Fe 2 O 4 presented a severe agglomerate state with a particle size of about 100 nm.…”

“…N, S-GO was prepared by thermal decomposition methods. 33,34 Briefly, 50 mg GO, 150 mg thiourea and 0.5 mL hydrogen peroxide were dispersed uniformly in 25 mL ultrapure water under ultrasonic stirring for 30 min. Then, the mixed solution was transferred into a 50 mL Teflon-lined autoclave for a hydrothermal reaction at 180 °C for 12 h. The obtained black precipitate was washed several times with water and ethanol, dried in a vacuum oven at 60 °C, and named N, S-GO.…”

Nitrogen-doped reduced graphene oxide-polyaniline composite materials: hydrothermal treatment, characterisation and supercapacitive properties

“…In addition, the increase of the strong and sharp peak at 284.5 eV and decline of the weaker peak at 286.5 eV, ascribed to sp 2 C–C and C–O–C/C–OH interactions, 35,39,40 respectively, upon raising the temperature of solvothermal treatment up to 190 °C relative to lower temperatures (70 and 130 °C) illustrate the increase in graphitisation and reduction, respectively (Fig. 2(d)).…”

“…2(a)–(c)). 24,35,36 The small component of sulfur found in the samples was attributed to H 2 SO 4 used in the oxidation reaction of graphite to produce GO. This agrees with previous reports on the formation of sulfur functionalities/adsorbed species under similar experimental conditions.…”