Synthesis and characterization of Ni-doped anatase TiO 2 loaded on magnetic activated carbon for rapidly removing triphe
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RESEARCH ARTICLE
Synthesis and characterization of Ni-doped anatase TiO2 loaded on magnetic activated carbon for rapidly removing triphenylmethane dyes Zhansheng Wu 1,2
&
Xiufang He 2 & Zhenzhen Gao 1 & Yongtao Xue 2 & Xin Chen 2 & Luohong Zhang 1
Received: 25 July 2020 / Accepted: 31 August 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract In this work, we employed the in situ synthesis method to implant Fe3O4 into activated carbon (AC), in which the synthesis of the magnetic AC (MAC) was realized. Thence, Ni-doped anatase TiO2 (NATiO2) were anchored on different addition amount of MAC to synthesize the series of Ni-TiO2/MAC photocatalysts. The chemical compositions and physical properties of these nanocomposites were analyzed by various characterization technologies. The photocatalytic capabilities of as-produced materials were then investigated via adsorption and photodegradation of triphenylmethane dyes (TPMs) as crystal violet (CV), basic fuchsine (BF), and malachite green (MG) solution. The results revealed that the removal of Ni-TiO2/AC, Ni-TiO2/2MAC, NiTiO2/4MAC, and Ni-TiO2/8MAC on TPMs is a very fast process and the removal efficiency can almost reach to about 90% in 10 min, and the catalyst has good cycle stability and is easy to be reused. This work provides a novel, low-cost, and effective way to rationally design and synthesize TiO2-based photocatalysts for effective removal of TPMs. Keywords Anatase TiO2 . Magnetic activated carbon . Photodegradation . Triphenylmethane dyes
Introduction Triphenylmethane dyes (TPMs), the third important dyes, have been widely employed in various fields, such as textile, leather, food, pharmaceutical, and cosmetic (Eich et al. 2020; Ye et al. 2019), which greatly satisfy people’s life demands. However, the generation and release involved TPMs unspent during industrial production process or in the dying process, almost 15% or 280 kt in the whole world every year (Mishra and Maiti 2018). Since TPMs possessed complex aromatic structures, they cannot be destroyed completely, resulting in their gradual accumulation in the nature environment. Due to the properties of persistence in the environment and resistance Responsible editor: Santiago V. Luis * Zhansheng Wu [email protected] * Luohong Zhang [email protected] 1
Xi’an Key Laboratory of Textile Chemical Engineering Auxiliaries, School of Environmental and Chemical Engineering, Xi’an Polytechnic University, Xi’an 710048, People’s Republic of China
2
School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, People’s Republic of China
to degradation, their mutagenic and carcinogenic properties are highly toxic to other living organisms and the environment (Gao et al. 2019). The conventional approach to mitigate dye problems are through the use of various physicochemical techniques based on precipitation, flocculation, redox processes, and electrochemical treatments (Bisht and Lal 2019; Kim et al. 2019; Saygili et al. 2019). However, these processes are not effective an
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