Natural solvent facilitated high-shear exfoliated graphene nanoplatelets enabled economically-efficient and stable DSSC

Liquid phase high shear exfoliated few-layered graphene for highly sensitive ascorbic acid electrochemical sensors

“…This method involves graphite dispersion in solvent (water), exfoliation and separation. In the typical synthesis process, 1 Ltr natural graphite (10 µm) suspension was prepared by adding 50 mg/ml natural graphite in water and 1 wt% surfactant (formulations are based on a patent) [32]. The prepared graphite suspension was sonicated for 30 minutes for the proper dispersion of graphite in water.…”

“…In the typical synthesis process, 1 l natural graphite (10 mm) suspension was prepared by adding 50 mg ml À1 natural graphite in water and 1 wt% surfactant (formulations are based on a patent). 32 The prepared graphite suspension was sonicated for 30 minutes for the proper dispersion of graphite in water. The dispersed graphite suspension was subjected to high shear mixing using a Ross-Mixer at 8000 rpm for 10 hours.…”

EDTA derived graphene supported porous cobalt hexacyanoferrate nanospheres as a highly electroactive nanocomposite for hydrogen peroxide sensing

“…8,9 Most nonenzymatic electrochemical sensors usually work either on electrochemical oxidation or electrochemical reduction by a chemically modified electrode material. Electrode materials like noble metal nanoparticles, 10 metal oxides, 11,12 hexacyanoferrates, [13][14][15] and carbon-based materials like quantum dots, 16 nano onions, 17 nanotubes, 18 graphene, 7,19,54 and their respective composites 20,21 were used for nonenzymatic H 2 O 2 determination. Among these materials, graphene and graphene composites have been found to be more promising for H 2 O 2 electrochemical sensing due to their large specific surface area, highly conductive nature, biocompatibility, and stable wide potential window.…”

Bilyalı Öğütücü ile Üretilen Ekonomik Fe@Ni Alaşımların Boya Duyarlı Güneş Hücrelerinde Karşıt Elektrot Potansiyelinin Araştırılması

“…Tablo 1 incelendiğinde Pt karşıt elektrotun kullanılan alaşımlara nazaran %4.67 verim değeri ile daha iyi bir aygıt performansı sunduğu görülmektedir (J sc = 12.37 mA/cm 2 , V oc = 0.61 V, FF = 0.62). Pt karşıt elektrot içeren hücrenin sunmuş olduğu yüksek performans Pt malzemesinin I 3 -/Ielektrolit ile olan yüksek indirgenme yükseltgenme kabiliyeti ve sahip olduğu yüksek elektriksel iletkenlikten kaynaklanmaktadır[34][35].Ayrıca bu çalışmada karşıt elektrot malzemesi olarak kullanılan Fe@Ni alaşımlarının ve Pt malzemesinin standart bir DSSC aygıt mimarisine getirdiği tahmini maliyet hesaplanmıştır. Hesaplanan tahmini maliyet değerleri Tablo 2'de gösterilmiştir.…”