Metal-free biomass with abundant carbonyl groups as efficient catalyst for the activation of peroxymonosulfate and degradation of sulfamethoxazole

Liu, Fei; Zhang, Yang; Shu, Wang; Gong, Tianyi; Hua, Ming; Qian, Jieshu; Pan, Bo

doi:10.1016/j.cej.2021.132767

Cited by 8 publications

(5 citation statements)

References 59 publications

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“…These phenomena indicate that both • OH and SO 4 •– contribute to BPA degradation in the current degradation system, while they are not dominant ROS because they just delay but not completely inhibit BAP degradation. In addition, superoxide radicals (O 2 •– ) are sometimes taken as dominant ROS in PMS-based AOPs, and thus p -benzoquinone (PBQ) is also selected as a quenching agent. It is unfortunate that the inhibition of PBQ on BPA removal is almost negligible, and thus the contribution of O 2 •– can be excluded.…”

Section: Resultsmentioning

confidence: 99%

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In Situ Growth of Nitrogen-Doped Carbon Nanotubes Based on Hierarchical Ni@C Microspheres for High Efficiency Bisphenol A Removal through Peroxymonosulfate Activation

Liu

Wang

Sun

et al. 2022

ACS Appl. Mater. Interfaces

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N-doped carbon nanotubes (NCNTs) are promising metal-free heterogeneous catalysts toward peroxymonosulfate (PMS) activation in advanced oxidation processes for wastewater remediation. However, conventional CNTs always suffer from serious agglomeration and low N content, which renders their design synthesis as an important topic in the related field. With hierarchical Ni@C microspheres as a nutritious platform, we have successfully induced in situ growth of NCNTs on their surface by feeding melamine under high-temperature inert atmospheres. These as-grown NCNTs with a small diameter (ca. 20 nm) are firmly rooted in Ni@C microspheres and present loose accumulation on their surface, and their relative content can be tailored easily by manipulating the mass ratio of melamine to Ni@C microspheres. The investigation on bisphenol A (BPA) removal reveals that the loading amount of NCNTs affects the catalytic performance greatly, and the optimum ratio of melamine to Ni@C microspheres is 5.0 because the corresponding MNC-5.0 possesses sufficient surface N sites and moderate electron transfer, resulting in powerful PMS activation and sufficient utilization of reactive oxidative species (ROS). MNC-5.0 also addresses its advantages as compared with other NCNTs from post treatment and spontaneous growth strategies. The primary ROS responsible for BPA degradation are identified as hydroxyl radical, sulfate radical, superoxide radical, and singlet oxygen through quenching experiments and electron paramagnetic resonance, and the corresponding catalytic mechanism is also put forward based on these results.

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Section: Resultsmentioning

confidence: 99%

“…•− ) are sometimes taken as dominant ROS in PMS-based AOPs, 73 and thus p-benzoquinone (PBQ) is also selected as a quenching agent. It is unfortunate that the inhibition of PBQ on BPA removal is almost negligible, and thus the contribution of O 2…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

In Situ Growth of Nitrogen-Doped Carbon Nanotubes Based on Hierarchical Ni@C Microspheres for High Efficiency Bisphenol A Removal through Peroxymonosulfate Activation

Liu

Wang

Sun

et al. 2022

ACS Appl. Mater. Interfaces

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“…With the continuous development of advanced oxidation processes (AOPs) for the treatment of refractory organic pollutants, sulfate radical (•SO 4 − ) oxidation, a novel free radical oxidation technology, has been developed [1]. This technology, exhibiting a higher redox potential and longer lifespan in solutions than the hydroxyl radical (•OH), is effective across a broad pH range [2][3][4]. Its potential to degrade methyl orange provides an important market prospect for water treatment [5].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Nickel-Based Bimetallic Catalyst and Its Activation of Persulfate for Degradation of Methyl Orange

Zhang,

Li,

et al. 2024

Processes

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In this research, a new catalyst for activating persulfate was developed by loading iron and nickel ions onto powdered activated carbon (PAC) for treating methyl orange, and the preparation process was optimized and characterized. The efficacy of the treatment was evaluated using the Chemical Oxygen Demand (COD) removal rate, which reflects the impact of various process parameters, including catalyst dosage, sodium persulfate dosage, and reaction pH. Finally, the recovery and reuse performance of the catalyst were studied, and the intermediate products were analyzed. The optimal conditions for preparing the activated sodium persulfate catalyst were determined to be as follows: a molar ratio of Fe3+ and Fe2+ to Ni of 4:1, a mass ratio of Fe3O4 to PAC of 1:4, a calcination temperature of 700 °C, and a calcination time of 4 h. This preparation led to an increase in surface porosity and the formation of a hollow structure within the catalyst. The active material on the surface was identified as nickel ferrite, comprising the elements C, O, Fe, and Ni. The magnetic property is beneficial to recycling. With the increase in catalyst and sodium persulfate dosage, the COD removal efficiency of the oxidation system increased first, and then, decreased. The catalyst showed good catalytic performance when the pH value was in the range of 3~11. Furthermore, Gas Chromatography–Mass Spectrometry (GC-MS) analysis indicated the complete oxidation of methyl orange dye molecules in the system. This result highlights the important role of the newly developed catalyst in activating persulfate.

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“…Different from the solvent adsorption process, the usage of solid adsorbents has the advantages of simple preparation, low cost, and environmental friendliness, which have been considered promising alternative methods for the effective removal of CO 2 . Up to now, a variety of porous materials, including metal oxides [11][12][13], mesoporous silica [14,15], activated carbon [16][17][18][19], porous organic polymers (POPs) [20][21][22][23][24][25][26][27][28], metal organic frameworks (MOFs) [29][30][31], and natural zeolites [32,33] has been prepared for the separation of CO 2 from mixed gases such as biogas and natural gas, showing enhanced capture performance. With widespread attention from the scientific and industrial communities, the design and preparation of adsorbent materials with higher adsorption capacity and lower costs have become the focus direction of solid adsorbent research at present.…”

Section: Introductionmentioning

confidence: 99%

Rational Fabrication of Benzene-Linked Porous Polymers for Selective CO2 Capture

Yan,

Zhai,

Sun

et al. 2023

Separations

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Various porous polymer materials have been prepared for the separation of CO2 from mixed gases. However, complex processes, expensive monomers, and costly catalysts are commonly used for their synthesis, making the adsorbents difficult to achieve in industrial applications. Herein, we developed a strategy to fabricate a series of benzene rings containing porous polymer materials (B-PPMs) via a facile condensation reaction of two inexpensive monomers, namely tetraphenylsilane and 1,4-bis(bromomethyl)benzene. The B-PPMs are verified to have accessible surface areas, large pore volumes, and appreciate pore sizes via a series of characterizations. The B-PPM-2 exhibits the best CO2 adsorption amount of 67 cm3·g−1 at 273 K and 1 bar, while the CO2/N2 selectivity can reach 64.5 and 51.9 at 273 K and 298 K, respectively. Furthermore, the adsorbent B-PPM-2 can be completely regenerated after five cycles of breakthrough experiments under mild conditions, which may provide promising candidates for selective capture of CO2 from mixtures.

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Metal-free biomass with abundant carbonyl groups as efficient catalyst for the activation of peroxymonosulfate and degradation of sulfamethoxazole

Cited by 8 publications

References 59 publications

In Situ Growth of Nitrogen-Doped Carbon Nanotubes Based on Hierarchical Ni@C Microspheres for High Efficiency Bisphenol A Removal through Peroxymonosulfate Activation

In Situ Growth of Nitrogen-Doped Carbon Nanotubes Based on Hierarchical Ni@C Microspheres for High Efficiency Bisphenol A Removal through Peroxymonosulfate Activation

Preparation of Nickel-Based Bimetallic Catalyst and Its Activation of Persulfate for Degradation of Methyl Orange

Rational Fabrication of Benzene-Linked Porous Polymers for Selective CO2 Capture

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