1911

LED Işık Işınımı Altında Metilen Mavisinin Hızlandırılmış Renksizleştirilmesi için Plazmonik Zr-esaslı Metal–Organik Çerçeveler

3 boyutlu morfolojiye sahip iyi tanımlanmış fotokatalizörler, daha erişilebilir reaktif yüzeyler, reaksiyon ortamından kolay bir şekilde elde edilebilmeleri ve düşük agregasyona sahip olmalarından dolayı bilim adamlarının dikkatini çekmiştir. Bu kapsamda, plazmonik metal organik çerçeve (MOF’ler) esaslı fotokatalizör sentezlendi ve ilk kez yeşil LED ışık ışınımı aracılığıyla metilen mavisinin (MB) görünür ışık altındaki degradasyonu için alternatif bir reaktif platform olarak kullanılmıştır. Elektron-boşluk çiftleri arasındaki rekombinasyonu azaltarak MB’nin fotokatalitik renksizleştirilmesini hızlandırmak için istikrarlı bir oksidan olan sodyum persülfat (PS) kullanılmıştır. Uygulanan stratejiler aracılığıyla çıplak Au@UiO-66@Pdop NP’lere kıyasla (yıkım derecesi %31) PS kullanılarak 120 dakika içinde %91’lik bir degredasyon derecesinin eldesi gösterilmiştir. Bu çalışmadan elde edilen sonuçlar, yeni sentezlenmiş çekirdek kabuk (core-shell) yapısındaki Au@UiO-66@Pdop fotokatalizörünün üstün özelliklerini vurgulamış ve ışık duyarlı MOF’lerin organik kirleticilerin degradasyonu için de mükemmel potansiyelini açık şekilde ortaya koymuştur.

Plasmonic Zr-Based Metal–Organic Frameworks for Accelerated De-Colorization of Methylene Blue Under LED Light Irradiation

Well-defined photocatalyst with 3D morphologies have attracted the attention of scientists due to the more accessiblereactive surfaces, easy to recover from reaction medium, and low aggregation. Within this scope, photocatalysisbased on plasmonic metal-organic frameworks (MOFs) were synthesized and utilized as an alternative reactive platformfor visible-light degradation of methylene blue (MB) under green LED irradiation for the first time. In order to reduce therecombination between electron-hole pairs, a stable oxidant, namely sodium persulfate (PS) was employed to acceleratethe photocatalytic decolorization of MB. These feasible strategies demonstrated that a bleaching degree of 91% (i.e., in thepresence of PS) within 120 min was achieved compared to the bare Au@UiO-66@Pdop NPs (bleaching degree 31%). Theobtained results from this study highlighted the superior properties of the newly synthesized core-shell Au@UiO-66@Pdopphotocatalysts and clearly declared the great potential of the photo-responsive MOFs for organic pollutant degradationsas well.

PDF

___

1. S. Cao, C.J. Wang, X.J. Lv, Y. Chen, W.F. Fu, A highly efficient photocatalytic H2 evolution system using colloidal CdS nanorods and nickel nanoparticles in water under visible light irradiation, Appl. Catal. B: Environ., 162 (2015) 381–391.
2. T. Baran, S. Wojtyła, A. Dibenedetto, M. Aresta, W. Macyk, Zinc sulfide functionalized with ruthenium nanoparticles for photocatalytic reduction of CO2 , Appl. Catal. B: Environ., 178 (2015) 170-176.
3. K. Villa, S. Murcia-López, T. Andreu, J.R. Morante, Mesoporous WO3 photocatalyst for the partial oxidation of methane to methanol using electron scavengers, Appl. Catal. B: Environ., 163(2015) 150-155.
4. C.C. Wang, J.R. Li, X.L. Lv, Y.Q. Zhang, G. Guo, Photocatalytic organic pollutants degradation in metal–organic frameworks, Energy Environ. Sci., 7 (2014) 2831-2867.
5. S. Yuan, L. Feng, K. Wang, J. Pang, M. Bosch, C. Lollar, Y. Sun, J. Qin, X. Yang, P. Zhang, Q. Wang, L. Zou, Y. Zhang, L. Zhang, Y. Fang, J. Li, H.C. Zhou, Stable metal–organic frameworks: design, synthesis, and applications, Adv. Mater., 30 (2018) 1704303.
6. C. Yu, S. Bourrelly, C. Martineau, F. Saidi, E. Bloch, H. Lavrard, F. Taulelle, P. Horcajada, C. Serre, P. L. Llewellyn, E. Magnier, T. Devic, Functionalization of Zr-based MOFs with alkyl and perfluoroalkyl groups: the effect on the water sorption behavior, Dalton Trans., 44 (2015) 19687-19692.
7. C. Wang, G.L. Guo, P. Wang, Synthesis, structure, and luminescent properties of three silver(I) complexes with organic carboxylic acid and 4,4′-bipyridine-like ligands, Transition Met. Chem., 38 (2013) 455-462.
8. C.Y. Sun, S.X. Liu, D.D. Liang, K.Z. Shao, Y.H. Ren, Z.M. Su, Highly stable crystalline catalysts based on a microporous metal−organic framework and polyoxometalates, J. Am. Chem. Soc., 131 (2009) 1883-1888.
9. J.R. Li, J. Sculley, H.C. Zhou, Metal–organic frameworks for separations, Chem. Rev., 112 (2011) 869-932.
10. N.L. Rosi, J. Eckert, M. Eddaoudi, D.T. Vodak, J. Kim, M. O’Keeffe, O. M. Yaghi, Hydrogen storage in microporous metal-organic frameworks, Science, 300 (2003) 1127-1129.
11. A.R. Millward, O.M. Yaghi, Metal−organic frameworks with exceptionally high capacity for storage of carbon dioxide at room temperature, J. Am. Chem. Soc., 127 (2005) 17998- 17999.
12. C. Wang, P. Wang, L. Feng, Influence of organic carboxylic acids on self-assembly of silver(I) complexes containing 1,2-bis(4-pyridyl) ethane ligands, Transition Met. Chem., 37 (2012) 225-234.
13. C.G. Silva, A. Corma, H. Garcia, Metal–organic frameworks as semiconductors, J. Mater. Chem., 20 (2010) 3141,3156.
14. F.X. Llabrés i Xamena, A. Corma, H. Garcia, Applications for metal−organic frameworks (MOFs) as quantum dot semiconductors, J. Phys. Chem., C 111 (2007) 80-85.
15. M.C. Das, H. Xu, Z. Wang, G. Srinivas, W. Zhou, Y.F. Yue, V.N. Nesterov, G. Qian, B. Chen, A Zn4 O-containing doubly interpenetrated porous metal–organic framework for photocatalytic decomposition of methyl orange, Chem. Commun., 47 (2011) 11715-11717.
16. Y. Gao, S. Li, Y. Li, L. Yao, H. Zhang, Accelerated photocatalytic degradation of organic pollutant overmetal-organic framework MIL-53(Fe) under visible LED lightmediated by persulfate, Appl. Catal. B Environ., 202 (2017) 165-174.
17. K. Ai, Y. Liu, C. Ruan, L. Lu, G. Lu, Sp2 C-Dominant N-Doped Carbon Submicrometer Spheres with Tunable Size: A Versatile Platform for Highly Efficient Oxygen Reduction Catalysts, J. Adv. Mater., 25 (2013) 998-1003.
18. M. Zhao, C. Deng, X. Zhang, The design and synthesis of a hydrophilic core– shell–shell structured magnetic metal– organic framework as a novel immobilized metal ion affinity platform for phosphoproteome research, Chem. Commun., 50 (2014) 6228-6231.
19. J.J. Du, Y.P. Yuan, J.X. Sun, F.M. Peng, X. Jiang, L.G. Qiu, A.J. Xie, Y.H. Shen, J.F. Zhu, New photocatalysts based on MIL53 metal–organic frameworks for the decolorization of methylene blue dye, J. Hazard. Mater., 190 (2011) 945-951.
20. B. Paul, B. Bhuyan, D.D. Purkayastha, M. Dey, S.S. Dhar, Green synthesis of gold nanoparticles using Pogestemon benghalensis (B) O. Ktz. leaf extract and studies of their photocatalytic activity in degradation of methylene blue, Mater. Lett., 148 (2015) 37-40.

Hacettepe Journal of Biology and Chemistry-Cover

ISSN: 2687-475X
Yayın Aralığı: Yılda 4 Sayı
Başlangıç: 1972
Yayıncı: Hacettepe Üniversitesi, Fen Fakültesi

Arşiv