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Finding an efficient and environment-friendly photocatalyst is significant for photocatalysis. In this research, a simple calcination with urea and salicylic acid (SA) is created for constructing a SA-modified graphite carbon nitride (g-CN-SA) photocatalyst. Compared to pure g-CN, g-CN-SA presents broadened light absorption, due to n → π* transition at nitrogen atoms. Interestingly, SA modification can strongly affect chemical and physical properties of g-CN, including increasing Brunauer-Emmett-Teller (BET) specific area, forming porous structure, improving optical absorption and promoting carrier separation, thus achieving the improved photocatalytic activity of g-CN-SA. The optimum g-CN-SA with the mass of SA 0.05 g (g-CN-SA-0.05) presents a high ammonia evolution rate of 7.92 mmol Lh g, 2.5 and 1.4 times than g-CN (3.2 mmol Lh g) and g-CN loaded with Pt (5.47 mmol Lh g). Furthermore, the excellent photostability of g-CN-SA is also achieved.
This article was published in the following journal.
Name: Journal of colloid and interface science
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Graphite. An allotropic form of carbon that is used in pencils, as a lubricant, and in matches and explosives. It is obtained by mining and its dust can cause lung irritation.
Derivatives and salts of SALICYLIC ACID.
Nanometer-sized tubes composed of various substances including carbon (CARBON NANOTUBES), boron nitride, or nickel vanadate.
The salts, esters of salicylic acids, or salicylate esters of an organic acid. Some of these have analgesic, antipyretic, and anti-inflammatory activities by inhibiting prostaglandin synthesis.
A nonmetallic element with atomic symbol C, atomic number 6, and atomic weight 12.011. It may occur as several different allotropes including DIAMOND; CHARCOAL; and GRAPHITE; and as SOOT from incompletely burned fuel.