NaFeS2 as a new photocatalytic material for the degradation of industrial dyes

被引：50

作者：

Dileepkumar, V. G. ^{[1
,2
]}

Surya, P. S. ^{[1
]}

Pratapkumar, C. ^{[1
]}

Viswanatha, R. ^{[3
]}

Ravikumar, C. R. ^{[4
]}

Kumar, M. R. Anil ^{[4
]}

Muralidhara, H. B. ^{[1
]}

Al-Akraa, Islam M. ^{[5
]}

Mohammad, Ahmad M. ^{[6
]}

Chen, Zhong ^{[7
]}

Xuan-Thanh Bui ^{[8
,9
]}

Santosh, Mysore Sridhar ^{[1
]}

机构：

[1] Jyothy Inst Technol, Ctr Incubat Innovat Res & Consultancy CIIRC, Off Kanakapura Rd, Bangalore 560082, Karnataka, India

[2] Visvesvaraya Technol Univ, Jnana Sangama, Belgaum 590018, Karnataka, India

[3] Jyothy Inst Technol, Dept Chem, Off Kanakapura Rd, Bangalore 560082, Karnataka, India

[4] East West Inst Technol, Res Ctr, Dept Sci, Bangalore 560091, Karnataka, India

[5] British Univ Egypt, Fac Engn, Dept Chem Engn, Cairo 11837, Egypt

[6] Cairo Univ, Fac Sci, Chem Dept, Cairo 12613, Egypt

[7] Nanyang Technol Univ, Sch Mat Sci & Engn, 50 Nanyang Ave, Singapore 639798, Singapore

[8] Vietnam Natl Univ Ho Chi Minh, Univ Technol, Fac Environm & Nat Resources, Ho Chi Minh City 700000, Vietnam

[9] Vietnam Natl Univ Ho Chi Minh, KeyLab Adv Waste Treatment Technol, Ho Chi Minh City 700000, Vietnam

来源：

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2020年 / 8卷 / 04期

关键词：

NaFeS2; Photocatalytic activity; Methylene blue; Indigo carmine; Hydrothermal method; IRON PYRITE; HYDROTHERMAL SYNTHESIS; ORGANIC-DYES; ZNO NANOMATERIALS; FES2; PHOTOLUMINESCENCE; NANOCOMPOSITE; NANOPARTICLES; REMOVAL; SULFIDE;

D O I：

10.1016/j.jece.2020.104005

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A new photocatalytic material sodium iron disulfide (NaFeS2) has been synthesized via a hydrothermal method for the degradation of methylene blue (MB) and indigo carmine (IC). This material has been subjected to various analytical, electrochemical and photocatalytic studies to understand its morphology, crystallinity, band gap, oxidation-reduction potential and ability to catalyse the rate of dye degradation. The material exists as nanorods with a thickness of 30-100 nm and a monoclinic phase with an average crystallite size of 25-30 nm. The energy bandgap of the prepared photocatalyst has been calculated using the Kubelka-Munk function and is found to be 2.01 eV. Using a UV light source, the photocatalytic activity of NaFeS2 has been carried out, where the time of irradiation determined the ability of the catalyst to degrade the dye under investigation. With a degradation efficiency of 97% in 105 min for MB and 99% in 45 min for IC, NaFeS2 appears as an excellent photocatalytic material. The electrochemical studies also act as a testament for NaFeS2 'sadmirable photocatalytic property. The photocatalytic and electrochemical activities of NaFeS2 offer an innovative platform for the treatment of various other environmental pollutants as well.

引用

页数：10

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