Study on Photocatalytic Degradation of Acid Red 73 by Fe\({}_{3}\)O\({}_{4}\)@TiO\({}_{2}\) Exposed (001) Facets  
[PERSON]  
1  
[PERSON]  
1 Hubei Key Laboratory of Digital Textile Equipment, Wuhan Textile University, Wuhan 430073, China; [EMAIL_ADDRESS] (L.S. ); zhouquan6016163.com (Q.Z. ); [EMAIL_ADDRESS] (J.M. ); [EMAIL_ADDRESS] (X.O. ); [EMAIL_ADDRESS] (X.S. ); [EMAIL_ADDRESS] (W.G. ); [EMAIL_ADDRESS] (S.M.) 2  
[PERSON]  
1 Hubei Key Laboratory of Digital Textile Equipment, Wuhan Textile University, Wuhan 430073, China; [EMAIL_ADDRESS] (L.S. ); zhouquan6016163.com (Q.Z. ); [EMAIL_ADDRESS] (J.M. ); [EMAIL_ADDRESS] (X.O. ); [EMAIL_ADDRESS] (X.S. ); [EMAIL_ADDRESS] (W.G. ); [EMAIL_ADDRESS] (S.M.) 2  
[PERSON]  
1 Hubei Key Laboratory of Digital Textile Equipment, Wuhan Textile University, Wuhan 430073, China; [EMAIL_ADDRESS] (L.S. ); zhouquan6016163.com (Q.Z. ); [EMAIL_ADDRESS] (J.M. ); [EMAIL_ADDRESS] (X.O. ); [EMAIL_ADDRESS] (X.S. ); [EMAIL_ADDRESS] (W.G. ); [EMAIL_ADDRESS] (S.M.) 2  
Xiaoxiang Song  
1 Hubei Key Laboratory of Digital Textile Equipment, Wuhan Textile University, Wuhan 430073, China; [EMAIL_ADDRESS] (W.G. ); [EMAIL_ADDRESS] (S.M.) 2  
Wenbang Gong  
1 Hubei Key Laboratory of Digital Textile Equipment, Wuhan Textile University, Wuhan 430073, China; [EMAIL_ADDRESS] (W.G. ); [EMAIL_ADDRESS] (W.G. ); [EMAIL_ADDRESS] (W.G.) 2  
[PERSON]  
1 Hubei Key Laboratory of Digital Textile Equipment, Wuhan Textile University, Wuhan 430073, China; [EMAIL_ADDRESS] (W.G. ); [EMAIL_ADDRESS] (W.G.) 2  
[PERSON]  
1 Hubei Key Laboratory of Digital Textile Equipment, Wuhan Textile University, Wuhan 430073, China; [EMAIL_ADDRESS] (W.G. ); [EMAIL_ADDRESS] (W.G.) 2  
[PERSON]  
1 Hubei Key Laboratory of Digital Textile Equipment, Wuhan Textile University, Wuhan 430073, China; sunli@wtu. semiconductor catalyst had a strong degradation ability for a variety of organic pollutants, which opened a new direction for the application of semiconductor catalytic materials in environmental protection research [4]. An effective pollution control method is the semiconductor photocatalytic degradation of pollutants in water. Common photocatalysts include C\({}_{3}\)N\({}_{4}\)[5], TiO\({}_{2}\)[1] and SiC [6]. TiO\({}_{2}\) has the characteristics of good chemical stability, strong oxidation and high photocatalytic activity, but the particles of TiO\({}_{2}\) are small and cannot precipitate rapidly in solution, which will cause problems such as difficult recovery and secondary pollution. As a typical magnetic material, Fe\({}_{3}\)O\({}_{4}\) has become the most popular magnetic carrier material due to its excellent magnetism and simple preparation process. The photocatalyst can be separated and recovered by a magnetic field by loading magnetic materials on TiO\({}_{2}\). Recyclable Fe\({}_{3}\)O\({}_{4}\)@TiO\({}_{2}\) composites can be prepared by the sol-gel method [7]. Fe\({}_{3}\)O\({}_{4}\)@TiO\({}_{2}\) core-shell nanocomposites with rapid magnetic separation were prepared by the solvothermal method, and the photocatalytic performance was significantly enhanced [8]. An Fe\({}_{3}\)O\({}_{4}\)@TiO\({}_{2}\) magnetic photocatalyst was prepared for photocatalytic degradation of bisphenol A under visible and long-wavelength UV light irradiation [9]. Fe\({}_{3}\)O\({}_{4}\)/TiO\({}_{2}\) nanocomposites were prepared by precipitation method and sol-gel mixed method. The prepared nanocomposites have good optical properties and can be used for photocatalytic degradation of dyes [10]. Compared with TiO\({}_{2}\), the prepared composites have higher photocatalytic performance and better reusability. The methods to improve the photocatalytic effect of TiO\({}_{2}\) mainly include increasing the exposure ratio of (001) high-energy facets [11], composites [12; 13] and doping [14]. TiO\({}_{2}\) has three different crystal forms: rutile, plate titanium and anatase. For anatase-type TiO\({}_{2}\), the (001) high-energy facets have better photocatalytic performance than the (101) low-energy facets.