INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Xingchen Yan,Xueren Qian
The conventional methods for the synthesis of zinc ferrite (ZnFe 2 O 4 ) basically require high temperature calcination oxidation step, which produces environmentally unfriendly high energy consumption and may produce harmful gases that pollute the atmosphere, as well as the calcination synthesis limits the application of ZnFe 2 O 4 such as preparation of organic composite materials. To end this, by adding carboxymethyl cellulose (CMC) to the reaction system, homogeneous litchi-like ZnFe 2 O 4 /CMC nanoparticles were successfully synthesized without alkali and calcination in this paper. The rich carboxyl group of CMC is conducive to the chelation and fixation of metal ions in the reaction precursor, which greatly promotes the synthesis of ZnFe 2 O 4 . The synthesized particle size is ~100 nm, with obvious ZnFe 2 O 4 diffraction peaks and good crystallinity. The photocatalytic performance of the synthesized photocatalyst was evaluated by visible light-Fenton-like method. With the activation of peroxymonosulfate (PMS), 80.27 % of tetracycline hydrochloride (TC) was degraded in just 18 min, suggesting that the synthesized catalyst had an excellent photocatalytic performance. After four cycles, the catalyst still could degrade 64.52 % TC. And the same behavior in XRD and FTIR spectra confirms the stability of the photocatalyst. In addition, it was determined that singlet oxygen ( 1 O 2 ) dominated the visible light catalytic degradation.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
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2025
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IF 5.4
Zhengjiang Liu,Yunting Zhang,Junjie Tang,Jiani Wu,Timur Borjigin,Lei Xing
Technological advancements and industrialization resulted in a significant increase in the discharge of hazardous waste into aquatic environments, highlighting the urgent need for environmentally friendly remediation strategies. In this context, the present study introduces Hangjin2 # clay as a novel, eco-friendly heterogeneous photo-Fenton-like catalyst for the degradation of methyl orange, a representative model pollutant in wastewater treatment. The skeletal structure and ionic coordination environment of Hangjin2 # clay were altered via acid and sodium citrate modification, which triggered structural and coordination rearrangements. This modification also immobilized Fe 2+ and generated both Lewis and Brønsted acid sites on the Hangjin2 # clay surface. The Lewis acid sites enhanced the adsorption of H 2 O 2 , while the Brønsted acid sites facilitated the formation of hydroxyl radicals through proton transfer processes. These effects collectively promoted efficient Fe 3+ /Fe 2+ redox cycling, thereby enhancing the photo-Fenton catalytic performance. XPS and FTIR analyses revealed that acid-activated iron ions, chelated by sodium citrate, underwent isomorphous substitution with tetrahedral Si 4+ in Hangjin2 # clay, as evidenced by characteristic Si-O-Fe vibrational features and binding energy shifts in the Fe 2p 3/2 orbitals. In photo-Fenton degradation experiments using hydrated systems, the catalyst achieved a 98.9 % degradation rate of 50 mg/L methyl orange under optimal conditions (25 mM H 2 O 2 , pH 3, and 1 g/L catalyst) after 90 min. Additionally, stability tests demonstrated a maintained removal efficiency of 98 % after three successive catalytic cycles.
研究领域:
环境化学
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催化科学
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水污染控制
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材料科学与工程
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表面化学
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DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2023
·Vol. 34
·期 4
·1751-1764
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IF 4
Zhou Zhuyou,Zou Congyang,Wang Yong,Liu Menghe,Ji Yufeng
A one-step solvothermal synthesis technique was employed to fabricate C 60 /MIL-101(Fe) composites. The C 60 /MIL-101(Fe) composites showed a better performance in the degradation of methylene blue (MB) and tetracycline hydrochloride (TCH) when compared to MIL-101(Fe) in the photo-Fenton system, which can be credited to the charge transfer and separation facilitated by the addition of C 60 . Results showed that C 60 /MIL-101(Fe) had the capacity to nearly completely eliminate TCH and MB over a broad pH range. The catalysts demonstrated remarkable catalytic degradation on various organic pollutants and water samples. Through active substance quenching experiments and EPR, it was determined that hydroxyl radical (·OH) is the main factor in the photocatalytic reaction process.
研究领域:
环境科学
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材料科学
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化学工程
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纳米技术
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DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2025
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IF 12.5
Meng Liu,Wenzhuo Lv,Fan Zeng,Canhui Wang,Xin Guo,Bo Zhou,Yiqiang Wu
Overcoming the inherent activity–stability trade-off in photo-Fenton systems requires advanced material architectures that integrate multifunctional synergies. In this study, we developed a multifunctional hydrogel, termed PCCF, fabricated by confining Fe 3 O 4 @polydopamine (PDA) nanoparticles within a three-dimensional (3D) pullulan–nanocellulose matrix specifically tailored for efficient doxycycline (DOX) elimination. PCCF exhibited a hierarchically engineered structure based on three synergistic strategies: (1) a pullulan (Pu)–cellulose nanofibrils (CNF)@carbon dots (CD) co-network with a hierarchically porous architecture (surface area: 230.6 m 2 /g), enabling ultrahigh adsorption capacity (Q m = 272.9 mg/g); (2) PDA-mediated nanoparticle immobilization to achieve spatial uniformity and reduce catalyst leaching (< 5 ppb Fe after five cycles); and (3) an optically transparent and mechanically resilient hydrogel framework (94.2 % transmittance at 500 nm, tensile strength: 41.7 kPa, elongation at break: 84.5 %). These integrated features synergistically improved the photo-Fenton degradation rate constant of PCCF by 3.03-fold compared to Fe 3 O 4 nanoparticles, while maintaining 90.4 % catalytic efficiency after five cycles. This work establishes a Pu hydrogel-based structural paradigm that harmonizes catalytic activity with long-term stability, offering a versatile blueprint for high-performance environmental remediation systems.
研究领域:
环境科学
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材料科学
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化学工程
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纳米技术
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
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2025
·Vol. 26
·期 16
·7751
·
IF 4.9
Jian Feng,Xiaohui Li,Xia Ran,Li Wang,Bo Xiao,Rong Li,Guangwei Feng
Fenton oxidation technology utilizing hydrogen peroxide is recognized as an effective method for producing reactive oxygen species (ROS) to facilitate the degradation of antibiotics. However, the requirement for strongly acidic conditions during this process significantly restricts its broader applicability. In this study, we synthesized black phosphorus (BP) nanosheets by exposing the {010} crystal planes and then constructed a 0D/2D BP/Bi2MoO6(PBMO) heterojunction to function as a Fenton catalyst. The PBMO-75 heterojunction exhibited a remarkable increase in photo-Fenton catalytic activity towards oxytetracycline (OTC) under neutral conditions, achieving catalytic efficiencies that were 20 and 8 times greater than those of BP and Bi2MoO6(BMO), respectively. This can be attributed to its strong absorption of visible light, the establishment of an internal electric field (IEF) at the interface, and the implementation of a Z-scheme catalytic mechanism. Additionally, the photo-Fenton system was further improved in OTC degradation through the continuous conversion of Mo6+/Mo5+under visible light irradiation in conjunction with H2O2. Based on ERS, XPS, and active species trapping experiments, we propose a Z-scheme charge transfer mechanism for PBMO. This research offers compelling evidence that 0D/2D Z-scheme heterojunctions are promising candidates for the photo-Fenton treatment of antibiotic contaminants.
研究领域:
环境科学
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光催化
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材料科学
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水处理
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化学工程
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产品关联
DOI
PubMed
高影响因子
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