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The photo-Fenton-like degradation of pollutants is dependent on the pH of solution. Here, we synthesized pristine ZnO nanorods, silver nanoparticle (AgNPs), and Ag-decorated ZnO (Ag/ZnO) composites. These materials were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and UV-visible (UV-vis) spectroscopy. Their catalytic activities were evaluated for the photo-Fenton-like degradation of 4-nitrophenol (4-NP) under visible-light irradiation at pH 4 and 7. Pristine ZnO nanorods exhibited higher catalytic activity than the Ag/ZnO composite at pH 4, while this trend reversed at pH 7. This pHdependent reversal is attributed to the interplay between the catalyst's surface charge and the speciation of 4-NP into its phenolate form. These findings demonstrate that the key factor for enhanced photocatalytic performance is not the noble metal decoration itself, but rather the interfacial charge and dominant reactive species

권호기사

권호기사 목록 테이블로 기사명, 저자명, 페이지, 원문, 기사목차 순으로 되어있습니다.
기사명 저자명 페이지 원문 목차
Comparative study on pH-dependent photocatalytic degradation of 4-nitrophenol using ZnO-based photocatalyst Eungyu Jo, Inseok Ham, Han-Kyu Choi p. 9-14
Isomer-dependent excited-state dynamics of anthracene dinaphthyl derivatives Hyerim Kim, Minyoung Kim, Myungsam Jen, Jong Min Lim p. 15-20
Highly efficient removal of Pd (Ⅱ) from wastewater using a new a modified multiwall carbon nanotubes : equilibrium and thermodynamic approach Milad Abniki, Nilofar Tajodini, Ali Moghimi, Ebrahim Balali p. 21-32
중등 과학 초임 교사와 경력 교사의 학습 목표에 대한 인식과 실행 분석 = A comparative analysis of beginning and experienced secondary science teachers' recognition and implementation of learning objectives 김민정, 박지훈, 남정희 p. 33-44
예비 중등 과학교사의 수업 설계 및 실행에서의 학습 목표 분석 = Analysis of learning objectives in pre-service secondary science teachers’ lesson planning and implementation 박건희, 남정희 p. 45-55
1907년 발간 『신편화학(新編化學)』의 구성과 내용 분석 및 교육사적 의의 = An analysis of the structure and content of Sinpyeon Hwahak (1907) and its historical significance in Korean science education 김지혜, 박다혜, 박종석 p. 56-65
Quantitative determination of biotinylated BSA and its aggregation using a HABA–avidin assay Chaeun Yoo, Danbee Lee, Hahkjoon Kim p. 66-69