Morphology-controlled hydrothermal synthesis and photocatalytic Cr(VI) reduction properties of α-Fe2O3

被引：67

作者：

Ge, Ting ^{[1
]}

Shen, Li ^{[2
]}

Li, Jing ^{[3
]}

Zhang, Yongcai ^{[1
]}

Zhang, Ya ^{[4
]}

机构：

[1] Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225009, Jiangsu, Peoples R China

[2] Yangzhou Univ, Guangling Coll, Yangzhou 225009, Jiangsu, Peoples R China

[3] Xuzhou Univ Technol, Sch Mat & Chem Engn, Xuzhou 221018, Jiangsu, Peoples R China

[4] Yangzhou Univ, Sch Environm Sci & Engn, Yangzhou 225127, Jiangsu, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2022年 / 635卷

基金：

中国国家自然科学基金;

关键词：

Fe2O3; Morphology; Hydrothermal synthesis; Photocatalysis; Cr(VI) reduction; Diluted black chromium electroplating solution; EFFICIENT; NANOPARTICLES; DEGRADATION; SNS2; MECHANISM; HETEROJUNCTIONS; PHOTOREDUCTION; POLYANILINE; FABRICATION; HOLLOW;

D O I：

10.1016/j.colsurfa.2021.128069

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Hematite (alpha-Fe2O3) with different morphologies were synthesized via hydrothermal treatment of ferric acetylacetonate in deionized water, simply by changing the hydrothermal temperature and time. Their photocatalytic performance was assessed based on the photocatalytic reduction of aqueous Cr(VI) under visible-light. It was found that the alpha-Fe2O3 nanorods synthesized at 175 degrees C for 2 h (Fe2O3-175 degrees C/2 h) had better photocatalytic activity than the other products. Moreover, Fe2O3-175 degrees C/2 h also demonstrated good photocatalytic reusability and stability. The reasons underlying the photocatalytic activity difference of different morphologies of alpha-Fe2O3 were proposed, by comparing their specific surface area, photoabsorption capability, and photogenerated charge transfer and separation efficiency. Various factors influencing the photocatalytic reduction of Cr(VI) by Fe2O3175 degrees C/2 h were also investigated. Finally, Fe2O3-175 degrees C/2 h was tested for photocatalytic treatment of the diluted black chromium electroplating solution under visible-light, and a good treatment result was obtained. Hence, alpha-Fe2O3 nanorods have great potential for photocatalytic treatment of Cr(VI) wastewater.

引用

页数：12

共 62 条

[1] Jointed Synchronous Photocatalytic Oxidation and Chromate Reduction Enabled by the Defect Distribution upon BiVO4: Mechanism Insight and Toxicity Assessment [J].

Chen, Sha ;

Li, Bo ;

Huang, Danlian ;

Xu, Piao ;

Chen, Yashi ;

Lei, Lei ;

Wang, Ziwei ;

Deng, Rui ;

Du, Li ;

Wang, Guangfu .

ACS APPLIED MATERIALS & INTERFACES, 2021, 13 (15) :17586-17598

[2] Fabrication and characterization of novel iodine doped hollow and mesoporous hematite (Fe2O3) particles derived from sol-gel method and their photocatalytic performances [J].

Demirci, Selim ;

Yurddaskal, Metin ;

Dikici, Tuncay ;

Sanoglu, Cevat .

JOURNAL OF HAZARDOUS MATERIALS, 2018, 345 :27-37

[3] Rapid visible and solar photocatalytic Cr(VI) reduction and electrochemical sensing of dopamine using solution combustion synthesized ZnO-Fe2O3 nano heterojunctions: Mechanism Elucidation [J].

Dhiman, Pooja ;

Sharma, Shalini ;

Kumar, Amit ;

Shekh, Mehdihasan ;

Sharma, Gaurav ;

Naushad, Mu .

CERAMICS INTERNATIONAL, 2020, 46 (08) :12255-12268

[4]

Ding Y., 2003, Production and Applications of Chromium Compounds

[5] Photoreduction of toxic chromium using TiO2-immobilized under natural sunlight: effects of some hole scavengers and process parameters [J].

Djellabi, R. ;

Ghorab, M. F. .

DESALINATION AND WATER TREATMENT, 2015, 55 (07) :1900-1907

[6] Ultrasonic-assisted synthesis of mesoporous g-C3N4/Na-bentonite composites and its application for efficient photocatalytic simultaneous removal of Cr(VI) and RhB [J].

Guo, Yadan ;

Li, Chenxi ;

Guo, Yiqin ;

Wang, Xuegang ;

Li, Xiaomeng .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2019, 578

[7] A review on exploration of Fe2O3 photocatalyst towards degradation of dyes and organic contaminants [J].

Hitam, C. N. C. ;

Jalil, A. A. .

JOURNAL OF ENVIRONMENTAL MANAGEMENT, 2020, 258

[8] Synergetic catalytic behavior of dual metal-organic framework coated hematite photoanode for photoelectrochemical water splitting performance [J].

Hong, Da Hye ;

Reddy, D. Amaranatha ;

Reddy, K. Arun Joshi ;

Gopannagari, Madhusudana ;

Kumar, D. Praveen ;

Kim, Tae Kyu .

JOURNAL OF CATALYSIS, 2020, 391 :471-479

[9] Fabrication of redox-mediator-free Z-scheme CdS/NiCo2O4 photocatalysts with enhanced visible-light driven photocatalytic activity in Cr(VI) reduction and antibiotics degradation [J].

Hu, Dongcheng ;

Xu, Youyuan ;

Zhang, Shengya ;

Tu, Jibing ;

Li, Min ;

Zhi, Lihua ;

Liu, Jiacheng .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2021, 608

[10] Kinetic and regeneration studies of photocatalytic magnetic separable beads for chromium (VI) reduction under sunlight [J].

Idris, Ani ;

Hassan, Nursia ;

Rashid, Roslina ;

Ngomsik, Audrey-Flore .

JOURNAL OF HAZARDOUS MATERIALS, 2011, 186 (01) :629-635

← 1 2 3 4 5 6 7 →