http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Warsi Al-Zoha (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Zinc oxide-tungsten oxide (ZnO-WO3) composite for solar light-assisted degradation of organic dyes
Aziz Fatima,Warsi Al-Zoha,Somaily Hamoud H.,Din Muhammad Imran,Sabeeh Humera,Warsi Muhammad Farooq,Shakir Imran 한국화학공학회 2023 Korean Journal of Chemical Engineering Vol.40 No.6
Photocatalytic degradation of dyes is one of the most effective methods that can be utilized for a pollution-free environment. For this purpose, Tungsten oxide (WO3), zinc oxide (ZnO) and their composite WO3/ZnO were synthesized using facile route. X-rays diffraction (XRD), Fourier transform infra-red spectroscopy (FTIR) and scanning electron microscopy (SEM) confirmed their structural, spectral and morphological features, respectively. These techniques confirmed the formation of desired products. The as-prepared samples were utilized as photocatalysts for the evaluation of the photocatalytic removal of methylene blue and rhodamine B under solar light irradiation. The obtained results showed that the synergistic effect of tungsten oxide and zinc oxide is responsible for the increased charge separation and reduction in recombination chances of charge carriers that enhance the remarkable photocatalytic performance. For methylene blue and rhodamine-b, the percentage degradation was 94% and 85.7%, respectively. Different scavenger studies showed that holes are the major active species responsible for the removal of methylene blue. The EIS and Mott-Schottky plots confirmed the p-type and n-type character of WO3 and ZnO, respectively. Briefly, the as-synthesized nanocomposite showed enhanced photocatalytic behavior for the degradation of various dyes as compared to pristine metal oxides.
-
Katubi Khadijah Mohammedsaleh,Warsi Al-Zoha,Aziz Fatima,Khattak Zafar A.K.,Warsi Muhammad Farooq,Al-Buriahi M.S.,Alrowaili Z. A.,Yousaf Sheraz 한국물리학회 2023 Current Applied Physics Vol.51 No.-
This study focuses on the production of hydrogen through electrocatalysis using a newly synthesized and characterized nano-hybrid composite based electrocatalyst. The electrocatalyst is composed of mixed metal oxides and reduced graphene oxide. The electrocatalysts were evaluated for their structural and morphological characteristics through the implementation of diverse characterization methodologies. The utilization of electrochemical methodologies, including linear sweep voltammetry, Tafel slope, and electrochemical active surface area measurements, provided valuable information regarding the catalytic efficiency and effectiveness of the electrocatalysts for the hydrogen evolution reaction. The findings indicate that the electrocatalyst WO3–CuO/ rGO demonstrated exceptional catalytic efficiency, as evidenced by a current density of 200 mA/cm2 at an overpotential of -400 mV, a Tafel slope of 44 mVdec-1, and low charge transfer resistance. Additionally, the chronoamperometric analysis exhibited the electrocatalyst’s durability, highlighting its potential for practical implementations.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
