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- W4309579009 abstract "• A green low-cost wood-based biochar was prepared from wood powder. • Modified wood-based biochar was used as a carrier to prepare MBC@Cu 2 O. • MBC@Cu 2 O stably removed MO via adsorption-photocatalysis. • The mechanism of adsorption-photocatalytic degradation of MO was explored. To treat dye-containing wastewater, p-type semiconductor Cu 2 O nanoparticles supported by wood-based biochar (MBC@Cu 2 O) were prepared in this work. Benefiting from the synergistic effects of the wood-based biochar skeleton and Cu 2 O, MBC@Cu 2 O efficiently degraded methyl orange (MO) dye via an adsorption-photocatalytic mechanism. A series of analytical results showed that the MO adsorption process was well-described by the pseudo-second-order kinetics model, and the maximum adsorption capacity was 1610 mg/g. The photocatalytic degradation efficiency of MO reached 94.5% under visible light irradiation, and free-radical capture experiments confirmed that superoxide radicals ( · O 2 - ) and hydroxyl radicals (·OH) were the main active species involved in this process. The photocatalytic efficiency of MBC@Cu 2 O remained above 80% after five reuse cycles. In addition, the adsorption and photocatalytic mechanisms were explored. The comprehensive results indicate that MBC@Cu 2 O, as a bifunctional adsorption-based photocatalytic composite, has great potential for removing anionic azo dyes from wastewater." @default.
- W4309579009 created "2022-11-28" @default.
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- W4309579009 date "2023-02-01" @default.
- W4309579009 modified "2023-10-11" @default.
- W4309579009 title "Porous spherical Cu2O supported by wood-based biochar skeleton for the adsorption-photocatalytic degradation of methyl orange" @default.
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- W4309579009 doi "https://doi.org/10.1016/j.apsusc.2022.155744" @default.
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