유지유량과 방류수질조절을 통한 하천의 적정 수질관리방안 : 금호강 수계를 대상으로

학위논문(석사)--서울대학교 환경대학원 :환경계획학과,1996.Maste

An Empirical investigation of short sales : evidence from the Korea stock exchange

학위논문(박사)--서울대학교 대학원 :경영학과 경영학전공,1999.학위논문(박사)-

New modelings, device structure extraction and optimization for power LDMOS transistor

Docto

Effect of synthesis parameters on visible light photocatalytic activity of graphene-TiO2 nanocomposites for industrial wastewater treatment

Reduced graphene oxide (RGO)-TiO2 nanotubes (TNTs) were used for industrial wastewater treatment that was obtained from Banwol Sihwa Industrial Complex, Korea. RGO-TNT were fabricated using one-step and two-step anodization at different RGO concentrations, RGO deposition times, anodization voltages and anodization times. Synthesized catalysts were characterised using FESEM, XRD, TEM, EDS, XPS, UV-vis DRS, PL, Raman, and pH(PZC). Compared with pure-TNTs, two-step and one-step RGO-TNT exhibited 2.7 and 3.3-times higher photocatalytic activities for industrial wastewater. Scavenger experiments identified that OH center dot and e(-) are main species involved in photocatalytic degradation of MB and industrial wastewater. RGO-TNTs are suitable for industrial wastewater treatment.The research was supported by the National Research Foundation (NRF) Korea, grant funded by Korean Government (NRF-2016R1A2A1A05005388)