CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yizhou Wu,Wenqi Zhou,Liang Zhou,Su-Il In,Juying Lei,Lingzhi Wang,Jinlong Zhang,Yongdi Liu
The utilization of near-infrared (NIR) light with strong photothermal effect in photo-Fenton or Fenton-like systems for the degradation of organic pollutants is always ignored. In this study, we have synthesized a novel photothermal Fenton-like catalyst (Co 3 O 4 /PDA) to activate peroxymonosulfate (PMS) for the degradation of antibiotics. The Co 3 O 4 in the nanocomposite acts as a PMS activator, while unexpectedly, PDA was found to accelerate the redox cycle of Co 2+ /Co 3+ . Both Co 3 O 4 and PDA are black-colored photothermal materials with excellent NIR absorption properties. During the degradation process, the light-to-heat conversion ability of Co 3 O 4 and PDA enables a higher temperature, which innovatively boosts the rate of PMS catalytic activation. Mechanistic studies revealed that the increased temperature effectively promotes the heterogeneous catalytic PMS activation by Co 3 O 4 /PDA. As a result, the Co 3 O 4 /PDA + PMS + NIR system exhibits greatly enhanced degradation performance. Furthermore, this degradation system demonstrates strong tolerance to different operation conditions, and the catalyst exhibits good stability in cycling tests. These results demonstrate the favorable application prospects of this photothermal Fenton-like system in environmental water remediation. The findings also contribute valuable insights towards the development of efficient strategies for the photothermal activation of PMS.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Jiandong Guo,Husheng Jia,Aiqin Zhang,Zhen Pei,Man Luo,Jinbo Xue,Qianqian Shen,Xuguang Liu,Bingshe Xu
Iron-based MOFs have been considered as the candidate for Fenton-like reagents owing to their open pore size and uniformly dispersed Fe active centers. However, the strong coordination of metal ions with organic ligands greatly reduces the exposed active sites of most iron-based MOFs, thus reducing Lewis acid sites and limiting the activation efficiency of H 2 O 2 . At the same time, low Fe 3+ /Fe 2+ cycle efficiency also restricts H 2 O 2 activation efficiency. Hence, in this work, a series of MIL-100 (Fe) containing mixed valence coordinatively unsaturated metal site (CUS) with different Fe 2+ /Fe 3+ ratios was synthesized by heat treatment and used for tetracycline hydrochloride (TC-HCL) degradation with the assistance of visible light. Interestingly, accelerated Fe 3+ /Fe 2+ cycle was observed with the aid of visible light. Among the prepared samples, CUS-MIL-250 prepared under vacuum at 250℃ has superior degradation performance, primarily owing to its large specific surface area and pore volume, improved visible light absorption, and the introduction of more Fe 2+ CUS. Meanwhile, compared with Fenton-like system and photocatalytic system, the CUS-MIL-250/H 2 O 2 /Vis system, with effective separation of photogenerated electrons and holes, demonstrates a synergistic effect to generate more reactive oxidation species, thereby improving the degradation efficiency. In addition, the catalyst shows good stability and recyclability.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2013
·
IF 3.473
Lijie Sun,Yuyuan Yao,Lie Wang,Yajun Mao,Zhenfu Huang,Daichuan Yao,Wangyang Lu,Wenxing Chen
The development of a pH-tolerant Fenton-like catalyst is an active and challenging project in water treatment. In this study, activated carbon fibers (ACFs) supported 8-hydroxyquinoline ferric (QuFe) has been reported as a heterogeneous Fenton-like catalyst (QuFe@ACFs) for efficient removal of dyes. The catalyst possessed remarkable catalytic performance across a wide range of pH values (3–9). Moreover, it also presented excellent sustained catalytic ability and regeneration capability in the experiments, causing reducing secondary contamination. Importantly, with the introduction of ACFs, QuFe@ACFs exhibited a greatly enhanced catalytic activity in comparison with bare QuFe. The hydroxyl radicals ( OH) are confirmed as the active species in QuFe@ACFs/H 2 O 2 system by the use of electron paramagnetic resonance (EPR) and fluorescence spectra. In addition, the central composite design (CCD) matrix and response surface methodology (RSM) were applied in designing the experiments for evaluating the interactive effects of temperature, pH, initial dye concentration and catalyst dosage. This study not only opens a novel avenue for designing pH-tolerant heterogeneous Fenton-like catalyst, but also provides a viable process for efficient elimination of dyes effluent.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2018
·
IF 5.091
Feihao Shi,Haoru Shan,Di Li,Xia Yin,Jianyong Yu,Bin Ding
Fenton or Fenton-like technique, as one of the advanced oxidation processes, plays a significant role in the removal of non-easily degradable organic pollutants; however, most of such catalysts are fragile with poor structural integrity under large deformation, thereby restricting their wide applications. Herein, soft copper ferrite nanostructures functionalized silica nanofibrous membranes (CuFe 2 O 4 @SNM) were fabricated through a novel strategy with the combination of in-situ dopamine polymerization, ion adsorption, and cohesive precipitation method. Benefiting from the high metallic ion adsorption capacity of polydopamine together with the rapid co-precipitation of adsorbed ions on fiber surface in alkaline solution, the membranes possessed homogenously distributed nanostructured CuFe 2 O 4 , large specific surface area, and high pore volume, which are a benefit for the improvement of Fenton-like catalytic activity towards organic pollutants decomposition. The resultant soft CuFe 2 O 4 @SNM provided favorable catalytic performance towards organic pollutants with a relatively high degradation degree of 96% in 20 min, a fast removal rate of 0.148 min −1 , and outstanding recyclability. The successful preparation of such fascinating ceramic nanofibrous membranes would provide a reference for further exploitation of new type Fenton or Fenton-like catalysts with outstanding softness towards wastewater purification.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
International Journal of Applied Ceramic Technology
·
2022
·Vol. 20
·期 1
·24-38
·
IF 2.328
Cong Zhou,HaiPeng Feng,GuangAo Liu,Feng Tao,Qi Liu
SiFeCO ceramic nanocomposites with porous structure have been successfully prepared via pyrolysis of novel iron-containing precursors, which were synthesized by modification of polycarbosilane with different contents of MIL-101(Fe), a kind of metal-organic framework made by our laboratory. Iron-containing precursors were pyrolyzed at relatively low temperatures ranging from 500 to 900°C under nitrogen atmosphere, the polymer-to-ceramic conversion process were investigated by Fourier transform infrared spectroscopy, X-ray diffraction (XRD), and thermo gravimetric analysis (TGA) measurements. SiFeCO ceramics with different iron contents were intensively studied with respect to their crystallization behavior, microstructure evolution, and porous morphology influenced by additive amount of MIL-101(Fe). The results of XRD and Transmission electron microscopy revealed that MIL-101(Fe)-modified precursors converted into amorphous SiFeCO ceramics when pyrolyzed below 700°C under nitrogen, extremely small Fe 3 O 4 and α-Fe crystallites with grain size of only 2–5 nm were in situ generated and dispersed uniformly in the SiCO ceramic matrix. Simultaneously, interconnected porous structure was created in the matrix by the decomposition of MIL-101(Fe). The as-obtained SiFeCO ceramics could serve as heterogeneous Fenton-like catalysts for the degradation of xylene orange and exhibit outstanding catalytic properties.
研究领域:
材料科学
·
催化化学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
·
2025
·
IF 4.8
Liu Weiyu,Qin Mei,Rao Wenhui,Xie Yijun,Yu Chuanbai
With industrialization progressing rapidly, the discharge of printing and dyeing wastewater has risen significantly. This wastewater contains organic dyes like methylene blue (MB), posing a significant risk to the environment and human health. This study reports the successful fabrication of a multifunctional magnetic aerogel (ZACPF) with synergistic adsorption and catalytic properties. The aerogel was prepared by incorporating ZnO/Ag 2 O heterojunctions into a dual-network hydrogel formed by cross-linking cellulose nanofibers (CNFs) and polyvinyl alcohol (PVA), followed by in-situ loading of magnetic Fe 3 O 4 . Experimental results showed that the aerogel has excellent adsorption performance for both cationic (416.34–984.52 mg/g) and anionic dyes (993.83–1025.95 mg/g) at 25 °C with pH 6.5. Characterization analyses confirm that the adsorption mechanism involves multi-site interactions, including electrostatic attraction, hydrogen bonding, and pore filling. When combined with H 2 O 2 , its degradation efficiency for MB at 20 mg/L was significantly enhanced, reaching 85.15% within 120 min at 25 °C with pH 6.5. The band alignment mechanism also facilitated the effective separation of photogenerated carriers, enabling a MB degradation rate of 98.91% under visible light within 60 min. Furthermore, the aerogel exhibited excellent recyclability, maintaining over 79.2% of its initial degradation efficiency after five cycles. In conclusion, this study presents an innovative strategy for developing high-performance aerogel catalysts to treat dye-contaminated water.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2020
·
IF 16.683
Jingren Yang,Deqian Zeng,Qinggang Zhang,Ruofan Cui,Muhammad Hassan,Lingqian Dong,Jun Li,Yiliang He
Fenton-like technology is a green pathway for removing recalcitrant organic pollutants from the environment. However, low catalytic efficiency and poor stability hinder the development of Fenton-like technology as a result of the lack of effective catalysts. Here, we report a highly efficient and stable Fenton-like catalyst based on isolated single Mn atom anchored on N-doped porous carbon. The catalyst exhibits high activity and stability in the heterogeneous activation of peroxymonosulfate (PMS) for organic pollutant degradation, showing an outstanding turnover frequency of greater than 5.69 min −1 in bisphenol A (BPA) degradation. A variety of analytical techniques as well as density functional theory (DFT) calculations suggest that the unique N-coordinated single Mn atom (MnN 4 ) serves as a highly catalytically active site for PMS activation, while the adjacent pyrrolic N site acts as an adsorption site for the target organic molecules. The ultra-high catalytic activity of single Mn atom catalyst can be attributed to its fantastic dual reaction sites, which remarkably shorten the migration distance from the radical to the adsorbed organic molecules.
研究领域:
环境科学
·
材料科学
·
催化化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）