Influence of KOH followed by oxidation pretreatment on the electrochemical performance of phenolic based activated carbon fibers

Preparation of electrode for electric double layer capacitor from electrospun lignin fibers

“…Recently, ACFs were tested as electrode material for electric double layer capacitor (EDLC) ( Liu et al 2007 ;Xu et al 2007 ). EDLC is an energy storage device, and could be an alternative to secondary battery like lithium ion battery ( Simon and Gogotsi 2008 ) because of its advantages: high power density, short charging time, long cycle life, and environmental friendliness ( Bose et al 2012 ;Wang et al 2012 ).…”

Carrier modification and its application in continuous photo‐hydrogen production using anaerobic fluidized bed photo‐reactor

“…It has been proved that the increase in surface oxygenic functional groups can increase the wetting quality of the surface, which was favorable to the improvement of microorganism fixing (Feng et al ., ). KOH modification can alter the surface oxygenic functional groups and improve the wet ability of ACF surface (Liu et al ., ). This showed that the hydrogen producer can attach on the surface of modified ACF more easily and this was good for the enhancement of hydrogen production.…”

“…After HNO 3 modification, the surface oxygenic functional groups visibly increased and meanwhile the hydrogen production performance was significantly enhanced (Xie et al, 2012b). Nevertheless, the oxidation capacity of KOH or H 2 O 2 was gentler and much weaker than that of HNO 3 , and the oxygenic functional groups on the surface of the carbon materials altered slightly after KOH or H 2 O 2 modification compared to HNO 3 modification (Santiago et al, 2005;Liu et al, 2007). Therefore, the ACFs modified by KOH or H 2 O 2 cannot immobilize the bacterial cells as high as HNO 3 -modified ACFs, which resulted in the lower hydrogen production rate and yield.…”

“…Several previous works have demonstrated that ACF was a satisfactory immobilization carrier for photo-fermentative bacteria with good biocompatibility and high immobilization ability (Xie et al, 2012a,b). Moreover, it was reported that modification can change the surface characteristics and the adsorption properties of ACFs, which had great influence on the improvement of immobilization capacity of ACFs (Oh et al, 2006;Liu et al, 2007). However, reports on the immobilization of photo-fermentative bacteria by modified ACFs were still rare.…”

Preparation and characterization of TiO2-NTs/SnO2-Sb electrodes by electrodeposition

“…Development of the electrodes with both high electrochemical activity and stability is always a hotspot. Various types of electrodes including graphite [4], carbon fiber [5], Pt [6,7], borondoped diamond (BDD) [8], IrO 2 [9][10][11], RuO 2 [12], PbO 2 [13][14][15], and SnO 2 [16][17][18][19][20] have been investigated. Comparison of different anodes has shown that Sb-doped SnO 2 electrode is one of the most suitable electrodes for the oxidation of refractory organic pollutants [21,22].…”