Dual-stimuli-responsive CuS-based micromotors for efficient photo-Fenton degradation of antibiotics

Ma, Enhui; Wang, Ke; Hu, Zhenqi; Wang, Hong

doi:10.1016/j.jcis.2021.06.142

Cited by 55 publications

(29 citation statements)

References 35 publications

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“…TC, as a high-efficiency broad-spectrum antibiotic, is widely used for human therapy, agriculture, and veterinary purposes. [36,37] The abuse of antibiotics leads to existence of residual antibiotics in the environment, which will promote the growth of antibiotic-resistant bacteria (ARB) and antibiotic-resistant genes (ARG) in organisms. [38] Therefore, it is of great significance to develop efficient and economical treatment technology for the degradation of antibiotics.…”

Section: Catalytic Performance Of Magnetic Mno 2 @Pollen Micromotorsmentioning

confidence: 99%

Biotemplated Shell Micromotors for Efficient Degradation of Antibiotics via Enhanced Peroxymonosulfate Activation

Wang

Hong

2022

Adv Materials Inter

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Self‐propelled magnetic MnO2@pollen micromotors have been developed as active heterogeneous catalysts of peroxymonosulfate (PMS) activation for efficient degradation of antibiotics. The MnO2 nanosheets (NSs) and Fe3O4 nanoparticles (NPs) are constructed on hollow pollens with small openings, endowing the natural materials with multifunctional properties. MnO2 NSs can decompose H2O2 to provide propulsion for micromotor movement, and also cooperate with Fe3O4 NPs to activate PMS to produce active free radicals SO4·−. Together with the OH· generated by Fe3O4 NPs and H2O2, the prepared micromotor catalyst can realize the degradation of tetracycline (TC) within several minutes. The self‐propulsion and abundant bubble formation cause effective fluid mixing and intensification of mass transfer, making up the low diffusivity defect of traditional heterogeneous catalysts. Moreover, the magnetic properties lay a foundation for the long‐range magnetic control and reutilization of heterogeneous catalysts, avoiding wastage and secondary contamination. The proposed self‐propelled pollen micromotors provide a highly efficient, economic, and environmentally friendly platform for the degradation of antibiotics.

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Section: Catalytic Performance Of Magnetic Mno 2 @Pollen Micromotorsmentioning

confidence: 99%

Biotemplated Shell Micromotors for Efficient Degradation of Antibiotics via Enhanced Peroxymonosulfate Activation

Wang

Hong

2022

Adv Materials Inter

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“…[ 8–11 ] During the last decade, these micro‐ and nanodevices have been designed with the aim of eliminating a wide range of pollutants through different physical and chemical processes such as physisorption [ 12–20 ] and biological‐based capture, [ 21 ] degradation, [ 22–38 ] and cell lysis [ 39–42 ] or combination of some of them. [ 17,43,44 ] Among them, degradation processes which include catalysis, [ 23,24,30,45,46 ] photocatalysis [ 25,26,36–38 ] and enzymatic catalysis, [ 27–29 ] are the most widely used mechanisms for the removal of organic pollutants. Particularly, Fenton‐like reactions have been explored as efficient decontaminating processes of AOPs in both bubble propelled platinum [ 23,45 ] or MnO 2 [ 17,43,47 ] microtubes and cobalt ferrite microparticles (CFO), [ 48 ] demonstrating exceptional degradation rates.…”

Section: Introductionmentioning

confidence: 99%

“…Engineered micro-and nanomotors have been exploited as active microcleaners for environmental purposes, showing an outstanding degradation performance due to the associated fluid mixing, as well as an efficient contaminant sensing. [8][9][10][11] During the last decade, these micro-and nanodevices have been designed with the aim of eliminating a wide range of pollutants through different physical and chemical processes such as physisorption [12][13][14][15][16][17][18][19][20] and biological-based capture, [21] degradation, [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] and cell lysis [39][40][41][42] or combination of some of them. [17,43,44] Among them, degradation processes which include catalysis, [23,24,30,45,46] photocatalysis [25,26,[36]…”

mentioning

confidence: 99%

“…[8][9][10][11] During the last decade, these micro-and nanodevices have been designed with the aim of eliminating a wide range of pollutants through different physical and chemical processes such as physisorption [12][13][14][15][16][17][18][19][20] and biological-based capture, [21] degradation, [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] and cell lysis [39][40][41][42] or combination of some of them. [17,43,44] Among them, degradation processes which include catalysis, [23,24,30,45,46] photocatalysis [25,26,[36][37][38] and enzymatic catalysis, …”

mentioning

confidence: 99%

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Micromotor‐in‐Sponge Platform for Multicycle Large‐Volume Degradation of Organic Pollutants

Vilela

Guix

Parmar

et al. 2022

Small

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The presence of organic pollutants in the environment is a global threat to human health and ecosystems due to their bioaccumulation and long‐term persistence. Hereby a micromotor‐in‐sponge concept is presented that aims not only at pollutant removal, but towards an efficient in situ degradation by exploiting the synergy between the sponge hydrophobic nature and the rapid pollutant degradation promoted by the cobalt‐ferrite (CFO) micromotors embedded at the sponge's core. Such a platform allows the use of extremely low fuel concentration (0.13% H2O2), as well as its reusability and easy recovery. Moreover, the authors demonstrate an efficient multicycle pollutant degradation and treatment of large volumes (1 L in 15 min) by using multiple sponges. Such a fast degradation process is due to the CFO bubble‐propulsion motion mechanism, which induces both an enhanced fluid mixing within the sponge and an outward flow that allows a rapid fluid exchange. Also, the magnetic control of the system is demonstrated, guiding the sponge position during the degradation process. The micromotor‐in‐sponge configuration can be extrapolated to other catalytic micromotors, establishing an alternative platform for an easier implementation and recovery of micromotors in real environmental applications.

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“…Antibiotics, defined as typical pharmaceuticals to treat microbial infections, have been widely used in the therapy and prevention of human and animal diseases, playing an important role in curbing the spread of infectious diseases around the world. Moreover, they have been used as additives to promote animal growth [1][2][3]. The secondary metabolites of antibiotics produced by living organisms in the process of metabolism can selectively inhibit or affect other biological functions [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Photothermal Catalytic Degradation of Lomefloxacin with Nano Au/TiO2

Duo

Wang

et al. 2022

Water

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With the fast development of intensive poultry and aquaculture, the consumption of antibiotics has ever been increasing. Absorbed or metabolized antibiotics usually enter the water environment in the form of active drugs and metabolites, which can enhance the resistance of pathogenic microorganisms and even cause serious water pollution. Considering the bacteriostatic activity of antibiotics, the main biological method used to treat organic waste water has limited efficiency. Herein, we prepared Au/TiO2 for the efficient photocatalytic degradation of lomefloxacin (LOM) antibiotic wastewater. Based on the characteristics of prepared Au/TiO2, the short–wavelength light can be converted into photogenerated carriers with TiO2 support and the long–wavelength light can be converted into heat, likely due to the localized surface plasmon resonance effect of Au, synergistically promoting the LOM degradation. This study not only demonstrates that Au/TiO2 is an efficient photocatalyst for LOM degradation, but also further indicates the effectiveness of photocatalytic technology in the treatment of antibiotic wastewater.

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Dual-stimuli-responsive CuS-based micromotors for efficient photo-Fenton degradation of antibiotics

Cited by 55 publications

References 35 publications

Biotemplated Shell Micromotors for Efficient Degradation of Antibiotics via Enhanced Peroxymonosulfate Activation

Biotemplated Shell Micromotors for Efficient Degradation of Antibiotics via Enhanced Peroxymonosulfate Activation

Micromotor‐in‐Sponge Platform for Multicycle Large‐Volume Degradation of Organic Pollutants

Photothermal Catalytic Degradation of Lomefloxacin with Nano Au/TiO2

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