Sequential photocatalytic degradation of organophosphorus pesticides and recovery of orthophosphate by biochar/α-Fe2O3/MgO composite: A new enhanced strategy for reducing the impacts of organophosphorus from wastewater

An, Xiongfang; Yang, Chen; Ao, Minghui; Jin, Yahui; Zhan, Liwei; Yu, Bing; Wu, Zhansheng; Jiang, Peikun

doi:10.1016/j.cej.2022.135087

Cited by 57 publications

(12 citation statements)

References 64 publications

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“…As a stable and inexpensive carbonaceous material, biochar effectively reduces the recombination rate of photogenerated electron-hole pairs, due to its excellent conductive property. An et al [ 60 ] developed biochar-supported α-Fe 2 O 3 /MgO composites for photocatalytic degradation of organophosphorus pesticides and obtained a degradation efficiency of 90% in 80 min. Huang et al [ 61 ] utilized pristine and manganese ferrite-modified biochar for Cu removal, confirming the role of biochar being principally an oxide carrier instead of an adsorbent.…”

Section: Role Of Biochar In the Removal Of Metal Ions And Pesticidesmentioning

confidence: 99%

Effective Usage of Biochar and Microorganisms for the Removal of Heavy Metal Ions and Pesticides

et al. 2023

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The bioremediation of heavy metal ions and pesticides is both cost-effective and environmentally friendly. Microbial remediation is considered superior to conventional abiotic remediation processes, due to its cost-effectiveness, decrement of biological and chemical sludge, selectivity toward specific metal ions, and high removal efficiency in dilute effluents. Immobilization technology using biochar as a carrier is one important approach for advancing microbial remediation. This article provides an overview of biochar-based materials, including their design and production strategies, physicochemical properties, and applications as adsorbents and support for microorganisms. Microorganisms that can cope with the various heavy metal ions and/or pesticides that enter the environment are also outlined in this review. Pesticide and heavy metal bioremediation can be influenced by microbial activity, pollutant bioavailability, and environmental factors, such as pH and temperature. Furthermore, by elucidating the interaction mechanisms, this paper summarizes the microbe-mediated remediation of heavy metals and pesticides. In this review, we also compile and discuss those works focusing on the study of various bioremediation strategies utilizing biochar and microorganisms and how the immobilized bacteria on biochar contribute to the improvement of bioremediation strategies. There is also a summary of the sources and harmful effects of pesticides and heavy metals. Finally, based on the research described above, this study outlines the future scope of this field.

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Section: Role Of Biochar In the Removal Of Metal Ions And Pesticidesmentioning

confidence: 99%

Effective Usage of Biochar and Microorganisms for the Removal of Heavy Metal Ions and Pesticides

et al. 2023

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“…It is superior to simple catalyst due to increase surface area, high catalytic activity and selectivity 8 . Different nanoparticles are in use as a catalyst in wide range of applications because of their high surface area and due to strong catalytic property 9 . Semiconductor metal oxides including titania, zinc oxide, silver oxide, copper sulphide, tin oxide, nickel oxide, cupreous oxide, magnetic and cadmium sul de have been utilized as photocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Ultrasound Assisted Photocatalytic Degradation of Isoproturon and Triasulfuron Herbicides Using Visible Light Driven Impregnated Zinc Oxide Catalysts

Khan

Khitab

Shah

et al. 2023

Preprint

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Herbicides in wastewater are considered as a serious issue to environmental pollution. Different impregnated metal zinc oxide (Cu/ZnO and Ni/ZnO) as catalyst were prepared through wet impregnation method. The prepared impregnated catalysts were characterized using scanning electron microscopy (SEM) and X-ray diffraction (XRD), energy dispersive X-ray (EDX) Analysis, Fourier-transform infrared spectroscopy, band gap and surface area. The degradation of selected herbicides Isoproturon and triasulfuron were investigated using combine effort of photocatalysis and sonication. The experimental parameters such as pH, irradiation time, photocatalyst dose, effect of oxidants, diverse ion effect, herbicide concentration and catalyst reusability have been optimized. The percent removal of isoproturon was found to be 99% and 98% at pH 7 and triasulfuron was 98% and 99% at pH 6 and 7 using (Cu/ZnO and Ni/ZnO) photocatalysts respectively.

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“…The search for novel materials toward the photocatalysis field has been one of the main goals nowadays, especially applied to environmental remediation and energy production research areas . Specifically, aiming at the remediation of environmental issues, various photocatalytic applications aim to mineralize air and water pollutants, usually targeting the degradation or elimination of pesticides, , pharmaceuticals, , organic volatile compounds, , dyes, bacteria, among others. Whereas, in the energy field, photocatalytic reactions have been used to promote hydrogen production from water (water splitting) and from ammonia borane, as well as for obtention of hydrocarbons from photocatalytic CO 2 reduction, e.g., carbon monoxide, formic acid, formaldehyde, methanol, and methane.…”

Section: Introductionmentioning

confidence: 99%

Plasmonic Photocatalysis Driven by Indirect Gold Excitation Via Upconversion Nanoparticle Emission Monitored In Situ by Surface-Enhanced Raman Spectroscopy

Sousa

Barros

Shimizu

et al. 2023

ACS Appl. Nano Mater.

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Lanthanide-doped upconversion nanoparticles (UCNPs) absorb low-energy photons, in the near-infrared region (NIR), and emit high-energy photons, in the visible or ultraviolet region (UV/Vis). The higher energy radiation emissions can be used to promote plasmonic photocatalytic reactions by coupling UCNPs with plasmonic nanoparticles. Thus, in this work, highly crystalline β-NaYF4:Yb3+,Er3+@NaYF4:Nd3+@NaYF4 UCNPs capped with an amino-modified nanosized silica shell were coupled with Au nanospheres (13 ± 2 nm). The plasmonic-driven dimerization of 4-aminothiophenol (4-ATP) to 4,4′-dimercaptoazobenzene (DMAB) was carried out solely by using the UCNP visible emissions to excite the Au nanoparticle localized surface plasmon resonance band. The reaction was monitored in situ through surface-enhanced Raman spectroscopy (SERS) and optimal conditions were achieved in order to eliminate secondary influences during spectra acquisition. The SERS substrates containing either UCNPs@SiO2-NH2/Au or SiO2-NH2/Au nanoparticles were prepared by the drop-cast method in silicon substrates. In the studied reaction conditions, plasmonic photocatalytic activity was observed only in the substrates containing UCNPs and Au nanoparticles. The plasmonic-driven reaction was achieved by UCNPs excitation with a 980 nm laser (25.7 mW), aligned in a Raman spectrometer, only after 5 s of exposition. Interactive document mapping (IDMAP), which is an unsupervised pattern recognition method, was applied to analyze the numerous SERS spectra acquired during the plasmonic photocatalytic measurements. The high values found for the silhouette coefficient (0.88 for the Si_SiO2-NH2/Au and 0.76 for the Si_NYF@SiO2-NH/Au substrate) indicate that strong discrimination among the Raman spectra was achieved. Thus, through IDMAP, it was observed that the SERS spectra obtained for the substrates containing either UCNPs@SiO2-NH2/Au or SiO2-NH2/Au corresponded to spectral features, respectively, from the DMAB product and the 4-ATP reagent, evidencing that, in the optimized reaction conditions, the dimerization occurred only through the interaction of the UCNPs with the Au nanospheres.

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Sequential photocatalytic degradation of organophosphorus pesticides and recovery of orthophosphate by biochar/α-Fe2O3/MgO composite: A new enhanced strategy for reducing the impacts of organophosphorus from wastewater

Cited by 57 publications

References 64 publications

Effective Usage of Biochar and Microorganisms for the Removal of Heavy Metal Ions and Pesticides

Effective Usage of Biochar and Microorganisms for the Removal of Heavy Metal Ions and Pesticides

Ultrasound Assisted Photocatalytic Degradation of Isoproturon and Triasulfuron Herbicides Using Visible Light Driven Impregnated Zinc Oxide Catalysts

Plasmonic Photocatalysis Driven by Indirect Gold Excitation Via Upconversion Nanoparticle Emission Monitored In Situ by Surface-Enhanced Raman Spectroscopy

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