Journal of Water Process Engineering
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2023
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IF 7
Guobin Li,Zhenbang Han,Tao Wang,Minghui Zhang,Qiaoqiao Liu,Tong Zhang,Xiaoming Zhao
Fe-doped graphitic carbon nitride (g-C 3 N 4 ) represents an attractive photo-Fenton catalyst for organic contaminants removal, but the practical performances still need to be improved for large-scale application. Herein, we developed a high-efficiency photo-Fenton catalyst by anchoring Fe-g-C 3 N 4 onto an amidoxime-functionalized polyacrylonitrile fiber (AP) substrate through a simple hydrothermal approach. Comprehensive characterizations demonstrate the strong catalyst-support interaction via the axial coordination bonding between -OH groups and Fe 3+ , which could induce electric polarization of Fe-g-C 3 N 4 to promote the H 2 O 2 adsorption and activation. The fibrous support could also accelerate the photoelectrons transfer from g-C 3 N 4 to Fe 3+ by strengthening the d-π conjugated large π bond, as well as alleviate the backflow recombination from Fe 3+ to g-C 3 N 4 through the electron sink effect. These synergistic qualities resulted in superior photo-Fenton performance for organic contaminants removal, which delivered 4.0-fold higher degradation kinetics than that of the Fe doped g-C 3 N 4 powder catalyst and exhibited unexpected high activity at strong basic environment (pH = 12). Our work demonstrates an ingenious and simple way to design exceptional photo-Fenton catalysts for environmental remediation.
研究领域:
环境科学
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材料科学
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催化化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
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2025
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IF 5.1
Shenghao Wang,Yajuan Wang,Linbo Cao,Jiasheng Zhang,Yuqing Liu,Bo Wang,Mingmin Li
Utilisation of highly efficient catalysts for photo-Fenton-like reactions, although challenging, is urgently desired to alleviate the serious global burden caused by organic pollutants. In this work, an example of two-dimensional (2D) porphyrin (TCPP) MOF arrays vertically grown on a copper foam (CF) was synthesized under hydrothermal conditions. The honeycomb-like structure offers a large surface area and capacious porous space for fast mass transfer and enrichment of organic pollutants. The highly dispersed active site (M–N4) of nanosheet arrays promotes the utilization of visible light to generate and separate photoelectrons and holes. In addition, the photocatalytic efficiency was further strengthened by the introduction of bimetallic sites. The macro-integrated structure can be conveniently recovered for cyclic catalysis, thus reducing costs and avoiding secondary pollution. These features together permit the self-supported 2D TCPP-MOF array's remarkable performance in persistent mineralization of various organic pollutants with different surface charges owing to the production of reactive oxygen species (ROS). This study provides a general method to rationally design and optimize photo-Fenton-like catalytic performance based on 2D MOFs for water remediation.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Zetian He,Tie Shi,Daimei Chen,Yuxin Wang,Yanmei Feng,Fengshan Zhou,Yilei Li
The extensive use and improper disposal of antibiotics and organic dyes have resulted in their substantial release into the natural environment, posing a grave threat to both the ecological system and human health. This study successfully synthesised an ultra-thin CuZnCr layered ternary hydrotalcite (CuZnCr-LDH) nanosheet, exhibiting remarkable photo-Fenton properties, through a streamlined one-step coprecipitation method. When the ratio of Cu + to Zn 2+ is 2:1, methylene blue (MB) degradation efficiency reaches 96.5 % after 70 min, and that of CIP attains 75 % after 3 h, and the mineralization rate can be as high as 81.3 % and 64.7 %. The key to enhancing its performance is that the ultrathin structure is conducive to carrier migration, a large number of photogenerated electrons are conducive to the recovery of valence states of Cu and Cr ions to promote Fenton reaction cycle, and the rich active species actively participate in the reaction. Furthermore, electron paramagnetic resonance (EPR) signaling and active material capture experiments have shown that photogenerated superoxide radicals (‧O 2 - ), hydroxyl radicals (‧OH) and holes (h + ) as active species play a crucial role in the degradation process. And the cyclic pattern of the high-priced metal was verified by X-ray photoelectron spectroscopy (XPS) testing, which is a key factor in the photo-Fenton synergy. Based on the experimental results, the photo-Fenton degradation mechanism is proposed. This study holds important promise in addressing the pressing problem of water pollution caused by antibiotics and organic pollutants.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Mingyu Li,Chaoqun Li,Zhao Chunrui,Tianren Li,Jingjing Jiang,Zhonghui Han,Chongjun Zhang,Haoran Sun,Shuangshi Dong
Fe-based metal organic framework with high active site exposure, wide light absorption and fast H 2 O 2 activation are pivotal for photo-Fenton degradation of contaminants. However, insufficient active site exposure, weak visible light adsorption and low charge transfer efficiency in iron-oxo clusters usually lead to the slow Fe(II)/Fe(III) cycle. In this study, we develop a novel citric acid (CA)-modified MIL-88A(Fe) strategy to boost photo-Fenton efficiency by accelerating Fe(II)/Fe(III) cycle for emerging contaminants removal. Relationship between CA coordination mode and photo-Fenton performance was studied by using methylene blue (MB) and carbamazepine (CBZ) as model contaminants. It was found that the degradation rate constants of MIL-88A(Fe)-CA-3 were 6.5 and 2.6 times higher than those in the pristine MIL-88A(Fe) for MB and CBZ degradation, respectively. The optimized MIL-88A(Fe)-CA-3 also exhibited good recyclability, enabling multiple cycles in photo-Fenton reaction. The results of experimental characterizations and density functional theory calculations demonstrated that ligand substitution was conductive to active site exposure, visible light absorption, charge carrier transfer and Fe 2+ /Fe 3+ redox cycle, which are responsible for an improved photo-Fenton performance.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL POLLUTION
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2024
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IF 7.6
Binrong Li,Chen Wang,Na Li,Chunyang Chen,Zhi Zhu,Xu Tang,Yanhua Cui,Tingting Liu,Collins Kwashie Attatsi,Xuedong Wang
Immobilizing Fe-based nanoparticles on electron-rich biochar has becoming an attractive heterogeneous Fenton-like catalysts (Fe/BC) for wastewater decontamination. However, the insufficient graphitization of biochar causing low electron transfer and by slow H 2 O 2 activation limited its application. Herein, we firstly constructed FeS/biochar composite through all-solid molten salt method (Fe/MSBCs), which can provide strong polarization force and liquid reaction environment to improve carbonization. As expected, the obtained Fe/MSBCs exhibits high surface area and fast interfacial electron transfer between FeS and biochar. More importantly, the partially oxidized FeS (001) facet facilitate H 2 O 2 adsorption and thermodynamically easily decomposition into •OH. Such a synergistic effect endowed them excellent photo-Fenton degradation performance for methyl orange (MO) with large kinetic rate constants (0.079 min −1 ) and high H 2 O 2 utilization efficiency (95.9%). This study first demonstrated the critical regulatory role of molten salt method in iron-based biochar composites, which provide an alternative for H 2 O 2 activator in water pollutant control.
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
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Jinjing Ju,Yihan Wu,Junhui Li,Dan Li,Feigao Xu
Fenton-like reaction based on Fe 3 S 4 /H 2 O 2 system has been applied in pollutants degradation, but the obvious drawbacks largely hinder its practical uses. Fe 3 S 4 /CdS composites were prepared using a hydrothermal method and tested for photo-Fenton catalytic activity. The degradation activity of the composites was tested using tetracycline hydrochloride (TCH) as an organic pollutant. The study investigated the effects of the mass ratio of Fe 3 S 4 and CdS, catalyst dosage, temperature, pH change, and H 2 O 2 dosage on the degradation of TCH. The study found that the removal rate of TCH by Fe 3 S 4 /CdS was 2.34 and 3.53 times higher than that of pure Fe 3 S 4 and pure CdS, respectively, at 35 °C when the mass ratio of Fe 3 S 4 to CdS was 1:1 and the pH value was 4.2. The Fe 3 S 4 /CdS composites widened the pH range for the Fenton reaction and still showed good degradation of TCH under neutral conditions. The trapping experiments of the active substances revealed that the main active radicals were •O 2 - , while •OH, h + , and e - play a minor role in the degradation of TCH. The catalytic reaction performance was improved by the synergistic effect of CdS and Fe 3 S 4 . Five cycle experiments were conducted on the Fe 3 S 4 /CdS composites, demonstrating their stability and reproducibility.
研究领域:
环境科学
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材料科学
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催化化学
✓ 已验证
产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
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2021
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IF 7.963
Qian Guo,Wenjie Zhu,Daoli Yang,Xi Wang,Yinghao Li,Chao Gong,Jiali Yan,Jinli Zhai,Xiaoya Gao,Yongming Luo
Pyrite is widely used in Fenton reaction for degradation of pollutants and exhibits great potential for environmental remediation, however, its efficiency is greatly compromised by extra H 2 O 2 and pH adjustment. Herein, a pyrite based green solar photo-Fenton system for carbamazepine (CBZ) treatment is constructed, involving the use of simulated sunlight and natural organic acids with in situ-generated H 2 O 2 and without extra pH adjustment. The addition of organic acids including tartaric acid (TA), citric acid (CA), and ascorbic acid (AA) can form complex with iron in pyrite, which promotes the Fe(II) dissolution. Upon irradiation, pyrite could be excited to produce photoelectrons , which would reduce oxygen to produce H 2 O 2 through a two-step route assisted by organic acids. The simulated sunlight and organic acids promoted the in-situ production of H 2 O 2 and Fe(II) species, sustaining an efficient Fenton reaction . This produced massive hydroxyl radical ( OH), as demonstrated by the active species capture experiment. Compared with no degradation of CBZ under pure pyrite, the degradation efficiency of CBZ reached to 70%, 60%, and 53% in pyrite/TA, pyrite/CA, pyrite/AA within 30 min under simulated solar light irradiation, respectively. This work reports the first use of natural pyrite, a typical Fe-mineral semiconductor, to produce OH for CBZ degradation through natural additive assisted Fenton reaction excluding the adding extra H 2 O 2 and pH adjustment.
研究领域:
环境科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
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2017
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IF 4.208
Ying Wang,Mingxing Liang,Jiasheng Fang,Jun Fu,Xiaochun Chen
In this study, α-FeOOH on reduced graphene oxide (rGO-α-FeOOH) supported on an Al-doped MCM-41 catalyst (RFAM) was optimized for the visible-light photo-Fenton oxidation of phenol at neutral pH. The stability of the catalysts, effect of bubbling aeration, and degradation intermediates were investigated. Results indicated that RFAM with a large Brunauer-Emmett-Teller (BET) area and mesoporous structure displayed excellent catalytic activity for the visible-light-driven (VLD) photo-Fenton process. Phenol degradation was well described by a pseudo-first-order reaction kinetics model. Raman analysis demonstrated that an rGO-α-FeOOH (RF) composite is formed during the ferrous-ion-induced self-assembly process. Al-MCM-41 could uniformly disperse RF nanosheets and promote the mobility and diffusion of matter. The activity of the main catalyst α-FeOOH was enhanced after the incorporation of rGO nanosheets. The α-FeOOH crystal in RFAM showed catalytic activity superior to those of Fe 3 O 4 and Fe 2 O 3 . The RFAM catalyst, with an optimal GO-Fe 2+ mass ratio of 2.33, exhibited a larger BET area, pore size, and pore volume, and thus exhibited high performance and energy utilization efficiency in the VLD photo-Fenton reaction with remarkable stability. Bubbling N 2 inhibited catalytic performance, while bubbling O 2 or air only slightly accelerated the phenol degradation. Visible light played an important role in accelerating the formation of reactive oxygen species (·OH) for the highly efficient phenol degradation. Analysis of degradation intermediates indicated a high phenol mineralization level and the formation of low-molecular-weight organic acids. This work would be helpful in providing an insight into a new type of catalyst assembly and a possible route to a promising heterogeneous catalyst applicable in the visible light photo-Fenton process for effective wastewater remediation at neutral pH.
研究领域:
环境科学
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催化材料
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废水处理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2025
·
IF 8.1
Qianying Zong,Xiaofei Niu,Xin Cheng,Yifan Liu,Cong Liu,Tingyue Shi,Jiapeng Liu,Xiaohong Yang,Wentao Wang,Zikuan Guo,Fengjuan Xiao
Nanoscale FeWO 4 /BiVO 4 heterojunctions were directly grown on the graphite fiber felt (GF) with good conductivity to construct a FeWO 4 /BiVO 4 @GF solar photo-Fenton like wastewater treatment system. The removal effect of COD from phenolic wastewater and the mechanism of synergistic improvement of wastewater treatment efficiency by this system were investigated. The FeWO 4 /BiVO 4 heterojunction prepared by hydrothermal method exhibited higher photoelectric conversion efficiency and solar light utilization rate, thus endowing FeWO 4 /BiVO 4 with excellent solar-Fenton like reaction activity.The photo-Fenton activity can be maintained well even within the pH range of 2–8. Loading FeWO 4 /BiVO 4 nano-heterojunction on GF helped to increase the contact area between Fenton reagents and wastewater, facilitate the electron transfer on the FeWO 4 /BiVO 4 heterojunction and enable the recovery and reuse of the Fenton reagents.Under solar light radiation, the COD removal efficiency of FeWO 4 /BiVO 4 @GF/H 2 O 2 system in phenolic wastewater was more than 92%. Even after five cycles, the system still exhibited excellent operation stability. FeWO 4 /BiVO 4 @GF promoted the conversion and cycling of Fe(III)/Fe(II) by accelerating the separation and transport of photogenerated electrons/holes and increasing the concentration of active species, thereby stimulating excellent solar photo-Fenton like activity.The results are significance to the development of green and efficient photo-Fenton process for advanced treatment of industrial wastewater.
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
Journal of Environmental Chemical Engineering
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2022
·
IF 7.968
Yifan Feng,Xu Huang,Huifang Wu,Dawei Li,Yi Sun
Nanomaterials coated ceramic membranes have become one of the most promising methods to degrade organic pollution. In this study, low crystalline metal nanomaterials were coated on ceramic membranes for the first time. This research fabricated a ceramic membrane with low crystalline Fe 2 O 3 @carboxylic multi-walled carbon nanotubes (CMWCNTs) and evaluated its aromatic compounds-degrading ability and self-cleaning ability. The coated membrane demonstrated an excellent removal rate (＞90%) of phenol and atrazine in 120 min’s continuous flow filtration via surface photo-Fenton reaction. Quenching experiments reveal the active substances of the reaction system were singlet oxygen ( 1 O 2 ) and a small amount of hydroxyl radical (·OH). With humic acid (HA) and bovine serum albumin (BSA) as model pollutants, the polluted membranes recovered 84.4% and 77.0% flux through the photo-Fenton reaction respectively, which proved the self-cleaning performance of the coated membrane. After 6 cycles, an average degradation efficiency of 92% for phenol was maintained in continuous flow filtration. These results indicated the efficacy of the photo-Fenton coupling coated membrane for treating organically polluted water and its relevance for the design and application of future photo-Fenton membrane filtration system.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CLAY SCIENCE
·
2021
·
IF 5.467
Zhou Cao,Yuefa Jia,Qizhao Wang,Hongfei Cheng
Traditional homogeneous Fenton reactions can only be carried out under acidic conditions; however, visible light can greatly enhance the activity and stability of iron-doped semiconductor catalysts in the Fenton system. Therefore, in this study, a commercially applicable Fe/graphitic carbon nitride (g-C 3 N 4 )/kaolinite composite photocatalyst was prepared for the first time using an in-situ calcination process. The results showed that Fe ions and g-C 3 N 4 were successfully loaded onto kaolinite with a two-dimensional uniform sheet structure. The as-synthesized Fe/g-C 3 N 4 /kaolinite composite containing 0.9 mmol of Fe (Fe/CN/K-0.9) showed a degradation efficiency of 89% for tetracycline hydrochloride (TCH) within 80 min in the photo-Fenton system. Compared with photocatalytic degradation (29.6%) and Fenton degradation (76.6%), a photo-Fenton degradation efficiency of 85% was maintained after three cycles. Free radical scavenging experiments also showed that hydroxyl radicals were the main active substances. The enhanced photocatalytic activity of the composite was attributed to the large specific surface area of kaolinite, which could effectively adsorb TCH. Furthermore, Fe III acted as a photo-generated electron acceptor , which not only avoided photo-generated electron-hole recombination but also effectively reduced the consumption of H 2 O 2 to realize a stable Fe II /Fe III cycle reaction, thus improving photo-Fenton catalytic activity .
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
APPLIED CLAY SCIENCE
·
2023
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IF 5.6
Jingmai Li,Shangying Li,Zhou Cao,Yunpu Zhao,Qizhao Wang,Hongfei Cheng
Compared with single photocatalytic reaction and single Fenton reaction, visible light assisted Fenton (photo-Fenton) reaction has higher degradation efficiency for environmental pollutants and great potential in the treatment of organic wastewater. Herein, a CoFe 2 O 4 /kaolinite (CFO/K) composite photocatalyst was synthesized by a simple sol-gel method, using kaolinite as a carrier. Such a composite was used to degrade tetracycline hydrochloride (TCH) through synergetic photo-Fenton reaction. Compared with pure CoFe 2 O 4 (CFO), CFO/K containing 40 wt% of kaolinite (CFO/K-40%) had larger specific surface area, abundant surface active sites, and higher photogenic electron hole pairs separation efficiency. Hence, it exhibited a higher photocatalytic degradation efficiency than CFO, and the degradation efficiency was up to 84.82% within 30 min. After three cycles, the photocatalytic degradation efficiency could remain at 76.58%, exhibiting good catalyst stability. During the TCH degradation process , hydroxyl radical and superoxide radical were the dominant active species . In addition, the CFO/K-40% composite exhibited a good degradation performance for different organic pollutants. This study suggested that the CFO/K composite material, as an efficient photocatalyst, has promising applications in the field of kaolinite-based photocatalysts for the treatment of organic wastewater.
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
危险品化学品经营许可证（带存储）