Visible-light driven photodegradation of phenol over niobium oxide-loaded fibrous silica titania composite catalyst

被引:11
作者
Zakaria, W. F. W. [1 ]
Jalil, A. A. [1 ,2 ]
Hassan, N. S. [1 ]
Ibrahim, M. [1 ]
Azami, M. S. [1 ]
机构
[1] Univ Teknol Malaysia, Fac Engn, Sch Chem & Energy Engn, Johor Baharu, Malaysia
[2] Univ Teknol Malaysia, Ctr Hydrogen Energy, Inst Future Energy, Johor Baharu, Malaysia
关键词
fibrous silica titania; Nb2O5; photodegradation; phenol; routes; ENHANCED PHOTOCATALYTIC ACTIVITY; DOPED TIO2 MICROSPHERES; NANOPARTICLES; DEGRADATION; REMOVAL; COPPER; PERFORMANCE; OXIDATION; EFFICIENT; RADICALS;
D O I
10.1002/jctb.6523
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
BACKGROUND Heterogeneous photocatalysis has been demonstrated to be a promising alternative to treating emerging pollutants in wastewater. Phenol, an extremely toxic substance among existing pollutants, can cause long-term unintended effects when improperly disposed. An effective measure to address this problem is to develop suitable heterojunctions. Among various photocatalyst, titanium dioxide (TiO2) appears to be an excellent photocatalyst in the degradation of organic pollutants. RESULTS Synthetization of well-constructed heterojunction composite of niobium oxide (Nb2O5) and fibrous silica titania (FST) for enhanced photocatalytic degradation of phenol has been investigated. The photocatalytic performance demonstrated that 5 wt% Nb(2)O(5)loaded on FST (5 Nb/FST) gave the maximum phenol degradation rate (1.70 x 10(-2)mM min(-1)) of 10 mg L(-1)phenol at pH 5 using 1000 mg L(-1)catalyst within 180 min. Meanwhile, under the same conditions, 1 Nb/FST, FST, 10 Nb/FST and Nb(2)O(5)only delivered 1.51 x 10(-2), 1.30 x 10(-2), 1.01 x 10(-2)and 0.07 x 10(-2)mM min(-1), respectively. Further phenol photocatalytic degradation routes by 5 Nb/FST reveal that the main intermediates detected are hydroquinone, catechol, maleic, fumaric, and malonic acid. CONCLUSION In this work, 5 Nb2O5/FST composite, as an effective-performance photocatalyst for phenol degradation, was well-constructed. The advanced activity can primarily be attributed to the regulated Nb(2)O(5)loading with FST and the effect of Nb/FST microsphere heterojunctions, synergistically. Besides, larger crystallite size, high impurity levels and Si-O-Nb and Nb-O-Ti bonds, offers excellent phenol degradation. (c) 2020 Society of Chemical Industry (SCI)
引用
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页码:2638 / 2647
页数:10
相关论文
共 58 条
[1]   Effect of calcination temperature on the structure and catalytic performance of copper-ceria mixed oxide catalysts in phenol hydroxylation [J].
Amadine, Othmane ;
Essamlali, Younes ;
Fihri, Aziz ;
Larzek, Mohamed ;
Zahouily, Mohamed .
RSC ADVANCES, 2017, 7 (21) :12586-12597
[2]   A novel Z-scheme WO3/CdWO4 photocatalyst with enhanced visible-light photocatalytic activity for the degradation of organic pollutants [J].
Aslam, Imran ;
Cao, Chuanbao ;
Tanveer, M. ;
Farooq, M. Hassan ;
Khan, Waheed S. ;
Tahir, Muhammad ;
Idrees, Faryal ;
Khalid, Syed .
RSC ADVANCES, 2015, 5 (08) :6019-6026
[3]   Tuning of the electronic band structure of fibrous silica titania with g-C3N4 for efficient Z-scheme photocatalytic activity [J].
Azami, M. S. ;
Jalil, A. A. ;
Hitam, C. N. C. ;
Hassan, N. S. ;
Mamat, C. R. ;
Adnan, R. H. ;
Chanlek, N. .
APPLIED SURFACE SCIENCE, 2020, 512
[4]   Controllable structure of fibrous SiO2-ZSM-5 support decorated with TiO2 catalysts for enhanced photodegradation of paracetamol [J].
Aziz, F. F. A. ;
Jalil, A. A. ;
Triwahyono, S. ;
Mohamed, M. .
APPLIED SURFACE SCIENCE, 2018, 455 :84-95
[5]   Nanostructured Silica-Titania Hybrid using Dendritic Fibrous Nanosilica as a Photocatalyst [J].
Bayal, Nisha ;
Singh, Rustam ;
Polshettiwar, Vivek .
CHEMSUSCHEM, 2017, 10 (10) :2182-2191
[6]   Enhanced photo-induced catalytic activity of Cu ion doped ZnO - Graphene ternary nanocomposite for degrading organic dyes [J].
Beura, Rosalin ;
Rajendran, Saravanan ;
Gracia Pinilla, M. A. ;
Thangadurai, Paramasivam .
JOURNAL OF WATER PROCESS ENGINEERING, 2019, 32
[7]   Recent advances in the textural characterization of hierarchically structured nanoporous materials [J].
Cychosz, Katie A. ;
Guillet-Nicolas, Remy ;
Garcia-Martinez, Javier ;
Thommes, Matthias .
CHEMICAL SOCIETY REVIEWS, 2017, 46 (02) :389-414
[8]   n-Heptane isomerization over mesostructured silica nanoparticles (MSN): Dissociative-adsorption of molecular hydrogen on Pt and Mo sites [J].
Fatah, N. A. A. ;
Triwahyono, S. ;
Jalil, A. A. ;
Ahmad, A. ;
Abdullah, T. A. T. .
APPLIED CATALYSIS A-GENERAL, 2016, 516 :135-143
[9]   Altering fiber density of cockscomb-like fibrous silica-titania catalysts for enhanced photodegradation of ibuprofen [J].
Fauzi, A. A. ;
Jalil, A. A. ;
Mohamed, M. ;
Triwahyono, S. ;
Jusoh, N. W. C. ;
Rahman, A. F. A. ;
Aziz, F. F. A. ;
Hassan, N. S. ;
Khusnun, N. F. ;
Tanaka, H. .
JOURNAL OF ENVIRONMENTAL MANAGEMENT, 2018, 227 :34-43
[10]   Synthesis, characterisation and photocatalytic activity of N-doped TiO2-Nb2O5 mixed oxides [J].
Ferrari-Lima, A. M. ;
Marques, R. G. ;
Gimenes, M. L. ;
Fernandes-Machado, N. R. C. .
CATALYSIS TODAY, 2015, 254 :119-128