Fabrication of 3D CeVO 4 /graphene aerogels with efficient visible-light photocatalytic activity

BTZ-copolymer loaded graphene aerogel as new type Green and metal-free visible light photocatalyst

“…It was similar to some of the GA based materials catalyzed visible-light driven photocatalytic decomposition. [4,12,18] However, the strong activity of MO photocatalytic decomposition achieved by 20 mg neat BTZ-Py (Fig 11b, 86.9%) was totally contributed from the polymer itself (i.e. 100 wt% polymer).…”

“…In other words, since photocatalytic ingredient was contributed from BTZ-Py ( On the other hand, GA based materials were good adsorbent [25][26][27][28] which may have risk of competition between adsorption and photocatalytic activity as mentioned previously. Up to date, most of the GA based photocatalytic investigation were carried out after the dark adsorption equilibrium achieved immediately, [1,3,5,8,9,[12][13][14][15]18] which was similar to results obtain in The reusability of the CMPGA was also the major concern since it affected the practical value of the CMPGA in the waste reduction, a 3 cycles operations from the fresh sample was carried out in the present study similar to those carried out by other groups in the photodegradation of MO using GA based visible-light driven photocatalysts (3-5 cycles). [1,3,8,14,15] Results shown in Fig 12 revealed that the reduction of C/C 0 at the end of the 3 operation cycles was 91.8%, 88.1% and 87.4%, respectively, a slight drop of 4.4% after the three cycles.…”

“…In past decades, GA based photocatalysts absorbing in the visible spectrum were mainly composed of metal oxides as the loading materials. [2,3,8,12,13] However, recent developments in metal-free loading of GA have become prominent since they have the advantages over the extensively studied metal or metal oxide loaded GA photocatalysts, [2,3,8,12,13] which included the free of metal and low cost of synthesis. Among them, C 3 N 4 [1,5,14,15] and dye molecules [4] were studied as immobilized photocatalysts within GA for visiblelight-driven photocatalytic reactions.…”

“…The study continued from the dark equilibrium mixture until the end without refreshing the dye. [1,3,5,8,9,[12][13][14][15]18] However, this photocatalytic activity was calculated from the amount of the normalized dye concentration (C/C 0 ) at the end of the reaction. [1-5, 8, 9, 12-15, 18] Some of reactions were even carried out without the dark adsorption equilibrium throughout the photocatalytic reactions and no comparing with corresponding activity in dark condition.…”

Hydrothermal synthesis of PrVO 4 nanocubes with enhanced photocatalytic performance through a synergistic effect

“…Rare earth orthovanadates, as the cohesive class of materials easy for charge transfer [8], have potential applications in various fields. A variety of vanadates, such as CeVO 4 , LaVO 4 , PrVO 4 , GdVO 4 , YVO 4 , HoVO 4 , and NdVO 4 have been synthesised and examined as catalysts, photoluminescence, gas sensors, solar cells, optical fibres, and humidity sensors [9][10][11][12]. Owing to the generation of large amounts of hydroxyl radicals, advanced oxidation processes have shown great potential for degrading various organic pollutants from wastewater in the last decade [13][14][15][16][17][18].…”