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学者姓名：侯乙东
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Abstract ：
Photocatalysts with abundant oxygen vacancies (OVs) exhibit enhanced activity for the direct oxidation of benzene to phenol with O2, owing to their superior O2 activation and charge separation properties. However, OVs on metal oxide surfaces such as WO3 are susceptible to healing by oxygen-containing reactants or intermediates, leading to their irreversible deactivation. Herein, we demonstrate that incorporating Mo into the WO3 lattice effectively lowers the energy barrier for OV formation, promoting the dynamic formation of more abundant photoinduced OVs in situ on the surface during the photocatalytic reaction. These Mo-promoted photoinduced OVs are found to ensure the long-term sustainability of sufficient OVs under working conditions, enhancing photocatalytic performance and particularly its durability in the aerobic oxidation of benzene to phenol. These findings provide a straightforward strategy to overcome the issue of OV healing, enabling the sustainable operation of OV-rich photocatalysts for a range of emerging applications, even in O2-involved redox reactions.
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| GB/T 7714 | Yu, Zhenzhen , Yu, Dexi , Wang, Xiaoyi et al. Photoinduced Formation of Oxygen Vacancies on Mo-Incorporated WO3 for Direct Oxidation of Benzene to Phenol by Air [J]. | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY , 2025 , 147 (16) : 13885-13892 . |
| MLA | Yu, Zhenzhen et al. "Photoinduced Formation of Oxygen Vacancies on Mo-Incorporated WO3 for Direct Oxidation of Benzene to Phenol by Air" . | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 147 . 16 (2025) : 13885-13892 . |
| APA | Yu, Zhenzhen , Yu, Dexi , Wang, Xiaoyi , Huang, Meirong , Hou, Yidong , Lin, Wei et al. Photoinduced Formation of Oxygen Vacancies on Mo-Incorporated WO3 for Direct Oxidation of Benzene to Phenol by Air . | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY , 2025 , 147 (16) , 13885-13892 . |
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The low efficiency of photogenerated charge separation significantly hinders the photocatalytic nitrogen (N2) fixation. Local polarization electric field (LPEF) induced by defects has been known to enhance charge separation, yet the synergistic effects and mechanisms related to different types of defects in pure phases remain poorly understood. In this study, defect-free bismuth oxybromide (BiOBr; BOB), together with single vacancy (BOB-VBr and BOB-VO) and dual vacancy (BOB-VBrO) analogues, were successfully synthesized, and the presence of these specific vacancies was comprehensively characterized. Notably, the dual vacancy BOB-VBrO exhibited the highest photocatalytic NH3 generation rate of 266 mu mol g-1 h-1 in a liquid-solid biphasic system, which was 6.1, 1.5, and 1.4 times higher than those of BOB, BOB-VBr, and BOB-VO, respectively. Furthermore, the NH3 generation capacity of BOB-VBrO reached an impressive rate of 978 mu mol g-1 h-1 in a gas-liquid-solid triphasic system. Photoelectrochemical tests revealed that BOB-VBrO demonstrated the highest light conversion efficiency, followed by BOB-VO, BOB-VBr, and BOB. The relative intensity of the internal electric field in BOB-VBrO was also significantly high, being 1.8, 2.4, and 3.9 times greater than those of BOB-VO, BOB-VBr, and BOB, respectively. The Br and O vacancies synergistically induced LPEF between the [O]/[Br] and [Bi] layers. In situ irradiation X-ray photoelectron spectroscopy indicated that O and Br vacancies of the oligomers could synergistically enhance the LPEF, thereby facilitating the transfer of photogenerated electrons from O/Br to Bi. Additionally, the practical feasibility of BOB-VBrO in photocatalytic N2 fixation was validated to produce liquid nitrogenous fertilizer for plant growth, revealing its potential application in agricultural production.
Keyword ：
BiOBr BiOBr local polarizationelectric field local polarizationelectric field photocatalytic nitrogen fixation photocatalytic nitrogen fixation synergy mechanism synergy mechanism vacancies vacancies
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| GB/T 7714 | Zhong, Zhou , Zhang, Heng-Jian , Yang, Ya-Ying et al. Oxygen and Bromine Vacancies Synergistically Induce Local Polarization Electric Field for Enhanced Photocatalytic Nitrogen Fixation on BiOBr [J]. | ACS CATALYSIS , 2025 , 15 (8) : 6334-6345 . |
| MLA | Zhong, Zhou et al. "Oxygen and Bromine Vacancies Synergistically Induce Local Polarization Electric Field for Enhanced Photocatalytic Nitrogen Fixation on BiOBr" . | ACS CATALYSIS 15 . 8 (2025) : 6334-6345 . |
| APA | Zhong, Zhou , Zhang, Heng-Jian , Yang, Ya-Ying , Zhang, Tian-Kuan , Qu, Xing-Hua , Ma, Li et al. Oxygen and Bromine Vacancies Synergistically Induce Local Polarization Electric Field for Enhanced Photocatalytic Nitrogen Fixation on BiOBr . | ACS CATALYSIS , 2025 , 15 (8) , 6334-6345 . |
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The development of durable and highly efficient visible-light-driven photocatalysts is essential for the photo- catalytic ozonation process towards degrading organic pollutants. This study presents CN-MA, a novel photo- catalyst synthesized by grafting carbon nitride (CN) with single-atom Mn and 2-hydroxy-4,6-dimethylpyrimidine (HDMP) via one-step thermal polymerization. Experimental characterization and theoretical calculation results reveal that incorporating single-atom Mn and HDMP into CN alters the charge density distribution on the heptazine rings. This modification enhances the absorption of visible light and reduces exciton binding energy, leading to improved separation and migration of photogenerated charge carriers. Moreover, the single-atom Mn provides abundant active sites for O3 adsorption and activation, which increases the utilization of photo- generated electrons to produce highly reactive oxidative species. Consequently, CN-MA exhibits superior photocatalytic ozonation activity, achieving 94% mineralization of phenol within 60 min and maintaining excellent stability over multiple cycles. The research also proposes a plausible reaction mechanism based on free-radical trapping experiments and steady-state concentration experiments using molecular probes. This strategy advances the development of molecular-engineered catalysts co-modified with single metal atoms, thereby enhancing the photocatalytic ozonation process for the degradation of organic pollutants.
Keyword ：
Carbon nitride Carbon nitride Molecular engineering Molecular engineering Photocatalytic ozonation Photocatalytic ozonation Single-atom Single-atom
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| GB/T 7714 | Lai, Zhiming , Yang, Yang , Yang, Zhou et al. Carbon nitride grafted with single-atom manganese and 2-hydroxy-4,6-di-methylpyrimidine: A visible-light-driven photocatalyst for enhanced ozonation of organic pollutants [J]. | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2025 , 683 : 1106-1118 . |
| MLA | Lai, Zhiming et al. "Carbon nitride grafted with single-atom manganese and 2-hydroxy-4,6-di-methylpyrimidine: A visible-light-driven photocatalyst for enhanced ozonation of organic pollutants" . | JOURNAL OF COLLOID AND INTERFACE SCIENCE 683 (2025) : 1106-1118 . |
| APA | Lai, Zhiming , Yang, Yang , Yang, Zhou , Ruan, Wenqi , Yang, Can , Chen, Qiang et al. Carbon nitride grafted with single-atom manganese and 2-hydroxy-4,6-di-methylpyrimidine: A visible-light-driven photocatalyst for enhanced ozonation of organic pollutants . | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2025 , 683 , 1106-1118 . |
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The integration of photoelectrochemical (PEC) technology with persulfate-based advanced oxidation processes has emerged as a promising approach for efficient pollutant removal in environmental remediation. Herein, we developed a novel PEC system combining a Co3O4/BiVO4 (CO/BVO) photoanode with a CoFe2O4/carbon paper (CFO/CP) cathode for activating peroxymonosulfate (PMS) toward bisphenol A (BPA) removal. The enhanced photogenerated charge separation in CO/BVO and the PMS activation by CFO/CP in the PEC system enabled complete BPA degradation within 60 minutes under optimized conditions (1.0 V bias, 1.0 mM PMS). The influence of PMS concentration, applied bias, pH, and coexisting anions on BPA degradation was thoroughly investigated. Radical scavenging experiments combined with electron paramagnetic resonance analysis identified center dot SO4-, center dot OH, and photogenerated holes as dominant reactive species. The system also exhibited good stability over five consecutive cycles, with minimal metal ion leaching. This work demonstrates the potential of an efficient PEC system integrated with sulfate radical-based AOPs, offering an innovative approach for organic pollutant remediation in wastewater treatment.
Keyword ：
Organic removal Organic removal Peroxymonosulfate Peroxymonosulfate Photoelectrocatalytic Photoelectrocatalytic
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| GB/T 7714 | Geng, Xuanran , Zhang, Renfu , Zhang, Peiyun et al. Photoelectrochemical cell with Co3O4/BiVO4 photoanode and CoFe2O4 cathode: An efficient persulfate activation system for organic pollutants degradation [J]. | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2025 , 13 (2) . |
| MLA | Geng, Xuanran et al. "Photoelectrochemical cell with Co3O4/BiVO4 photoanode and CoFe2O4 cathode: An efficient persulfate activation system for organic pollutants degradation" . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 13 . 2 (2025) . |
| APA | Geng, Xuanran , Zhang, Renfu , Zhang, Peiyun , Yuan, Xiaoying , Yang, Can , Hou, Yidong et al. Photoelectrochemical cell with Co3O4/BiVO4 photoanode and CoFe2O4 cathode: An efficient persulfate activation system for organic pollutants degradation . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2025 , 13 (2) . |
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Designing porous structures has proven to be an effective strategy for enhancing the photocatalytic NO oxidation activity of carbon nitride (CN). Despite significant advances in the fabrication of porous CN, a cost-effective and high-yield synthesis method for porous CN is still highly desirable. In this study, we presented a facile strategy to synthesize porous carbon nitride by V2O5-assisted thermal oxidation process. Namely, after grinding bulk CN with a small amount of NH4VO3, the mixture was subjected to thermal treatment, resulting in porous carbon nitride with a yield of 50 %. The resulting porous structure, which features an enlarged surface area and enhanced charge separation efficiency, significantly improved the photocatalytic performance for NO removal-approximately four times higher than bulk CN. Additionally, the NO removal mechanism was investigated through in-situ Fourier transform infrared spectroscopy to observe reaction intermediates and electron paramagnetic resonance trapping experiments to identify active species, providing insight into the conversion pathway. The catalytic thermal oxidation etching process effectively tuned the microstructure of g-C3N4, offering a low-cost, easy-to-implement, and time-efficient method for synthesizing porous CN, thereby providing a promising approach for developing advanced photocatalysts.
Keyword ：
NO oxidation NO oxidation O 2 activation O 2 activation Photocatalysis Photocatalysis Porous carbon nitride Porous carbon nitride
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| GB/T 7714 | Fang, Zixun , Zhou, Yao , Yang, Zhou et al. V2O5-assisted thermal oxidation strategy for synthesizing porous carbon nitride with enhanced photocatalytic NO removal performance [J]. | SURFACES AND INTERFACES , 2025 , 60 . |
| MLA | Fang, Zixun et al. "V2O5-assisted thermal oxidation strategy for synthesizing porous carbon nitride with enhanced photocatalytic NO removal performance" . | SURFACES AND INTERFACES 60 (2025) . |
| APA | Fang, Zixun , Zhou, Yao , Yang, Zhou , Yang, Can , Zhang, Jinshui , Hou, Yidong . V2O5-assisted thermal oxidation strategy for synthesizing porous carbon nitride with enhanced photocatalytic NO removal performance . | SURFACES AND INTERFACES , 2025 , 60 . |
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Among the current industrial hydrogen production technologies, electrolysis has attracted widespread attention due to its zero carbon emissions and sustainability. However, the existence of overpotential caused by reaction activation, mass/charge transfer, etc. makes the actual water splitting voltage higher than the theoretical value, severely limiting the industrial application of this technology. Therefore, it is particularly important to design and develop highly efficient electrocatalysts to reduce overpotential and improve energy efficiency. Among the various synthesis methods of electrocatalysts, electrochemical synthesis stands out due to its simplicity, easy reaction control, and low cost. This review article classifies and summarizes the electrochemical synthesis techniques (including electrodeposition, electrophoretic deposition, electrospinning, anodic oxidation, electrochemical intercalation, and electrochemical reconstruction), followed by their application in the field of water electrolysis. In addition, some challenges currently faced by electrochemical synthesis in electrocatalytic hydrogen production, and their potential solutions are discussed to promote the practical application of electrochemical synthesis in water electrolysis.Graphical AbstractThis review summarizes and classifies commonly used electrochemical synthesis techniques, followed by the application of electrochemical synthesis methods in research on water electrolysis. Additionally, some challenges faced by electrochemical synthesis in the field of water electrolysis and possible solutions are discussed.
Keyword ：
Electrocatalysts Electrocatalysts Electrochemical synthesis Electrochemical synthesis Green hydrogen Green hydrogen Water splitting Water splitting
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| GB/T 7714 | Wu, Yang , Xiao, Boxin , Liu, Kunlong et al. Electrochemical Synthesis of High-Efficiency Water Electrolysis Catalysts [J]. | ELECTROCHEMICAL ENERGY REVIEWS , 2025 , 8 (1) . |
| MLA | Wu, Yang et al. "Electrochemical Synthesis of High-Efficiency Water Electrolysis Catalysts" . | ELECTROCHEMICAL ENERGY REVIEWS 8 . 1 (2025) . |
| APA | Wu, Yang , Xiao, Boxin , Liu, Kunlong , Wang, Sibo , Hou, Yidong , Lu, Xue Feng et al. Electrochemical Synthesis of High-Efficiency Water Electrolysis Catalysts . | ELECTROCHEMICAL ENERGY REVIEWS , 2025 , 8 (1) . |
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Photocatalytic oxidation of benzene to phenol using molecular O2 is one of the most promising sustainable approaches for the green synthesis of phenol. Introducing oxygen vacancies (OVs) on semiconductor surfaces by defect engineering is a promising strategy to enhance the efficiency of benzene oxidation to produce phenol due to the unique functions of OVs in facilitating the charge separation and activation of molecular O2. Herein, a vacuum-sealed annealing strategy has been well developed to generate abundant surface OVs on semiconductors, such as WO3. The well-sealed quartz vial creates a well-controlled low-pressure condition for the formation of OVs without the need for external energy for maintaining the vacuum state. Moreover, the gaseous species generated during the thermal annealing process help mitigate stress-induced defects, particularly bulk defects. The vacuum-sealed annealed WO3 with sufficient OVs and reduced bulk defects shows a better photocatalytic performance in the one-step oxidation of benzene to phenol with O2, compared to the WO3 synthesized through thermal annealing in Ar and H2 atmospheres. The present vacuum-sealed annealing strategy is found to be further applicable to engineer a wide range of semiconducting photocatalysts with abundant OVs to optimize their properties for efficient photocatalysis and other OV-promoted systems.
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| GB/T 7714 | Yu, Dexi , Lin, Yuhong , Zhou, Wenhui et al. Photocatalytic Oxidation of Benzene to Phenol with O2 over WO3 Treated by Vacuum-Sealed Annealing [J]. | LANGMUIR , 2025 , 41 (6) : 4287-4295 . |
| MLA | Yu, Dexi et al. "Photocatalytic Oxidation of Benzene to Phenol with O2 over WO3 Treated by Vacuum-Sealed Annealing" . | LANGMUIR 41 . 6 (2025) : 4287-4295 . |
| APA | Yu, Dexi , Lin, Yuhong , Zhou, Wenhui , Wang, Xiaoyi , Yu, Zhenzhen , Hou, Yidong et al. Photocatalytic Oxidation of Benzene to Phenol with O2 over WO3 Treated by Vacuum-Sealed Annealing . | LANGMUIR , 2025 , 41 (6) , 4287-4295 . |
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Oxygen vacancies (OVs) spatially confined on the surface of metal oxide semiconductors are advantageous for photocatalysis, in particular, for O2-involved redox reactions. However, the thermal annealing process used to generate surface OVs often results in undesired bulk OVs within the metal oxides. Herein, a high pressure-assisted thermal annealing strategy has been developed for selectively confining desirable amounts of OVs on the surface of metal oxides, such as tungsten oxide (WO3). Applying a pressure of 1.2 gigapascal (GPa) on WO3 induces significant lattice compression, which would strengthen the W-O bonds and increase the diffusion activation energy for the migration of the O migration. This pressure-induced compression effectively inhibits the formation of bulk OVs, resulting in a high density of surface-confined OVs on WO3. These well-defined surface OVs significantly enhance the photocatalytic activation of O2, facilitating H2O2 production and aerobic oxidative coupling of amines. This strategy holds promise for the defect engineering of other metal oxides, enabling abundant surface OVs for a range of emerged applications.
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| GB/T 7714 | Wang, Xiaoyi , Xue, Sikang , Huang, Meirong et al. Pressure-Induced Engineering of Surface Oxygen Vacancies on Metal Oxides for Heterogeneous Photocatalysis [J]. | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY , 2025 , 147 (6) : 4945-4951 . |
| MLA | Wang, Xiaoyi et al. "Pressure-Induced Engineering of Surface Oxygen Vacancies on Metal Oxides for Heterogeneous Photocatalysis" . | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 147 . 6 (2025) : 4945-4951 . |
| APA | Wang, Xiaoyi , Xue, Sikang , Huang, Meirong , Lin, Wei , Hou, Yidong , Yu, Zhiyang et al. Pressure-Induced Engineering of Surface Oxygen Vacancies on Metal Oxides for Heterogeneous Photocatalysis . | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY , 2025 , 147 (6) , 4945-4951 . |
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Photocatalytic chemical transformations for green organic synthesis has attracted much interest. However, their development is greatly hampered by the lack of sufficient reactive sites on the photocatalyst surface for the adsorption and activation of substrate molecules. Herein, we demonstrate that the introduction of well-defined Lewis and Br & oslash;nsted acid sites coexisting on the surface of TiO2 (SO42-/N-TiO2) creates abundant active adsorption sites for photoredox reactions. The electron-deficient Lewis acid sites supply coordinatively unsaturated surface sites to adsorb molecular oxygen, and the Br & oslash;nsted acid sites are liable to donate protons to form hydrogen bonds with the OH groups of alcohols like benzyl alcohol (BA). These coexistent acid sites result in a strong synergistic effect in photocatalytic aerobic oxidation of BA. For example, the conversion of BA to benzaldehyde was found to be 88.6 %, being much higher than those of pristine TiO2 (14.7 %), N-doped TiO2 (N-TiO2, 24.6 %), sulfated TiO2 (SO42-/ TiO2, 35.4 %), and even their sum. The apparent quantum efficiency (AQE) was determined to be 58.1 % at 365 nm and 12.9 % at 420 nm over SO42-/N-TiO2. This strategy to create effective synergistic Lewis and Br & oslash;nsted acids on the catalyst surfaces enables us to apply it to other semiconducting photocatalytic organic transformations.
Keyword ：
br & oslash;nsted acids br & oslash;nsted acids heterogeneous catalysis heterogeneous catalysis lewis acids lewis acids oxidation oxidation photocatalysis photocatalysis
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| GB/T 7714 | Yu, Dexi , Zou, Junhua , Zeng, Lingdong et al. Lewis and Brønsted Acids Synergy in Photocatalytic Aerobic Alcohol Oxidations [J]. | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2025 , 64 (15) . |
| MLA | Yu, Dexi et al. "Lewis and Brønsted Acids Synergy in Photocatalytic Aerobic Alcohol Oxidations" . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 64 . 15 (2025) . |
| APA | Yu, Dexi , Zou, Junhua , Zeng, Lingdong , Hou, Yidong , Lin, Wei , Wu, Ling et al. Lewis and Brønsted Acids Synergy in Photocatalytic Aerobic Alcohol Oxidations . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2025 , 64 (15) . |
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Persulfate-based advanced oxidation technology, due to its high efficiency, controllability, and safety, shows great potential for the deep removal of organic pollution, yet its mineralization efficiency is hindered by the lack of synergy between radical and nonradical pathways. Herein, we present defective carbon nitride (DCN) as a highly efficient peroxymonosulfate (PMS) activation catalyst that couples nonradical aggregation with radical mineralization. The tailored electronic structure of the DCN framework enhances visible-light absorption, photogenerated charge separation, and electron transfer ability due to a built-in electric field. DCN effectively interacts with PMS to rapidly accumulate pollutants from the bulk solution onto the catalyst surface via an electron-transfer pathway. Simultaneously, the accumulated pollutants undergo in-situ decomposition by center dot SO4- radicals formed on the catalyst surface under visible light irradiation, achieving a remarkable 98 % mineralization ratio. The mixed-pathway process demonstrates excellent cyclic stability and environmental robustness. This study introduces a novel strategy to enhance the catalytic oxidation performance of metal-free catalysts by controlling persulfate activation pathways for water decontamination.
Keyword ：
Carbon nitride Carbon nitride Peroxymonosulfate Peroxymonosulfate Photocatalysis Photocatalysis Pollutant mineralization Pollutant mineralization Synergistic Synergistic
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| GB/T 7714 | Ming, Hongbo , Ruan, Wenqi , Yuan, Xiaoying et al. Defective carbon nitride-Mediated peroxymonosulfate activation: Synergistic radical and nonradical pathways for enhanced pollutant mineralization [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2025 , 360 . |
| MLA | Ming, Hongbo et al. "Defective carbon nitride-Mediated peroxymonosulfate activation: Synergistic radical and nonradical pathways for enhanced pollutant mineralization" . | SEPARATION AND PURIFICATION TECHNOLOGY 360 (2025) . |
| APA | Ming, Hongbo , Ruan, Wenqi , Yuan, Xiaoying , Cheng, Jiajia , Yang, Can , Hou, Yidong et al. Defective carbon nitride-Mediated peroxymonosulfate activation: Synergistic radical and nonradical pathways for enhanced pollutant mineralization . | SEPARATION AND PURIFICATION TECHNOLOGY , 2025 , 360 . |
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