CATALYSIS LETTERS
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2025
·Vol. 155
·期 10
·1-13
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IF 2.4
Chen Shiqi,Huang Zhixuan,He Wentao,Wang Xinyu,Yang Zhiwei,Zhang Jing
Molybdenum nitride, because of the strong metal-support interaction between nitrogen and the metal, exhibits activity superior to that of bare metals, demonstrating its effectiveness as a co-catalyst to address the slow kinetics of the iron reduction in the Fenton process. Here, we introduced Mo 2 N as a co-catalyst to accelerate the cycles of Fe 3+ /Fe 2+ within a Fenton-like system consisting of Fe 3+ and H 2 O 2 , thereby enhancing the activation of hydrogen peroxide to generate reactive oxygen species (ROS). The system demonstrates excellent recyclability and stability. XPS spectroscopic analyses reveal that Mo(III) and Mo(IV) species on the Mo 2 N surface are capable of reducing free Fe(III), while FTIR analyses show nitrogen (N) and nitrogen oxide (NO x ) facilitate the adsorption and coordination of iron. Both homogeneous and heterogeneous reduced iron species are active in the activation of H 2 O 2 . EPR spectroscopy further confirms that the primary ROS generated are hydroxyl radicals (·OH) and superoxide anions (·O 2 − ). This study not only underscores the feasibility of Mo 2 N-based Fenton-like systems but also provides a new strategy for promoting the practical application of Fenton chemistry. Graphical
研究领域:
环境化学
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催化
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材料科学
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物理化学
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分析化学
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2022
·
IF 14.224
Suzhou Xu,Can Liu,Xuping Jiang,Xinyu Wang,Shijin Zhang,Yanting Zhang,Qingguo Wang,Weiling Xiong,Jing Zhang
The performance and mechanisms of a titanium carbide (Ti 3 C 2 ) MXene modified Fe 3+ /hydrogen peroxide (H 2 O 2 ) system were compared in detail under dark and visible light conditions, with a new mechanism proposed for the reaction and reduction of MXene by Fe 3+ . Using Bisphenol A (BPA) as the target pollutant, the degradation of BPA by the Fe 3+ /H 2 O 2 system was improved after adding MXene in the dark, and the degradation rate of BPA was ≥ 95 % within 12.5 min under visible light, six times higher than that in the dark. Fe 2+ was ascertained to be the effective component responsible for H 2 O 2 activation to produce ·OH. SEM , XPS, ICP, XRD, and FTIR spectroscopy , analyses show that MXene and Fe 3+ form a complex, and then MXene reacts with Fe 3+ by breaking the Ti–C bonding to accelerate the Fe 3+ /Fe 2+ cycle. MXene uses photogenerated electrons to promote this reaction under visible light. In addition, quenching experiments and electron spin resonance spectroscopy results show that ·OH and O 2 •− are the main reactive oxygen species under visible light, while ·OH is the main active species in the dark. MXene thus effectively uses O 2 to form O 2 •− under visible light and promotes the Fe 3+ /Fe 2+ cycle. This study provides a theoretical basis for the combination of visible light catalysis and the advanced oxidation process of a Ti 3 C 2 MXene.
研究领域:
环境科学
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化学工程
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材料科学
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高级氧化过程
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DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
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2025
·
IF 2.5
Zihan Wei,Xiaoqian Ren,Tianhong Mei,Rongcheng Xiang,Wugan Wei,Xiaorui Yang,Yan Fang,Wenlong Xu,Jianliang Zhu,Jinhua Liang
In this study, various of MgFeTi-LDH/g-C3N4 photocatalytic materials had been successfully synthesized through self-assembly, and the physicochemical and photoelectric properties were thoroughly characterized. Optical performance characterizations of band gaps and VB-XPS spectra revealed that the EVB and ECB alignment of MgFeTi (3:1)-LDH/g-C3N4 composites are consistent with the fundamental characteristics of S-type heterojunctions. MgFeTi (3:1)-LDH/g-C3N4 coupled with sodium persulfate activation for TCH degradation achieved nearly 100% removal efficiency under visible light, surpassing previously reported catalysts. Moreover, five repeated tests of MgFeTi (3:1)-LDH/g-C₃N₄ showed negligible change in the removal rate of TCH, indicating its potential value for industrial applications. Furthermore, the catalytic degradation pathway and mechanism for MgFeTi (3:1)-LDH/g-C3N4 have been elucidated through LC-MS analysis, radical capture, and characterization. In addition, the high efficiency of TCH degradation is attributed to the synergy of Fe3+、Fe2+, SPS, and active species such as •OH, SO4•−, and •O2−. Finally, the QSAR analysis and OD600 values suggest that the degradation pathway and time lead to a reduction in toxicity and the potential risk to the degradation liquid. This study offers simple, economical approach to completely degradation TCH, also providing practical application prospects in wastewater treatment.
研究领域:
环境科学
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材料科学
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催化化学
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DOI
高影响因子
PHOTOCHEMISTRY AND PHOTOBIOLOGY
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2024
·
IF 2.6
Rong Zhang,Zhuannian Liu,Taoli Chen
Developing cost-effective and efficient photo-Fenton catalysts is crucial for advancing photo-Fenton technology. MoS 2 is a representative transition metal disulfide with attractive photoresponsiveness, making it ideal for preparing composite photo-Fenton catalysts. In this study, natural molybdenite was innovatively utilized as a source of MoS 2 (OM) to synthesize a low-cost and efficient Fe@MoS 2 (OMF) composite photo-Fenton catalyst by comminution and adsorption, which was then applied to the remediation of antibiotic-contaminated water. The OMF composites exhibited significant catalytic activity, with a kinetic rate constant of 0.022 min −1 , which was 3.1 times higher than that of the original OM (0.007 min −1 ), indicating a 3% increase. This was attributed to the synergistic effect of many photogenerated electrons and reversible Mo 4+ /Mo 6+ redox pairs, which accelerated the regeneration of Fe 2+ . After three cyclic tests, the concentrations of dissolved Fe 2+ and Mo 2+ ions remained below 0.38 mg/L and 0.17 mg/L, respectively. This indicates the high reusability of the catalyst in cyclic experiments. Ultimately, the main active species, •OH and •O 2 − , were generated during the photo-Fenton process, contributing significantly to TC degradation. This study may serve as a reference for the development and application of natural mineral composite photo-Fenton catalysts in the treatment of organic wastewater.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2025
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IF 8.4
Caiwen Wu,Shan Huang,Xing Cao,Zexiong Huang,Yanjuan Zhang,Zuqiang Huang,Huayu Hu,Tao Gan
Fe-based photo-Fenton process is widely used to remove antibiotic in wastewater, however, the synthesis of efficient and stable catalysts to solve the problems of Fe 3+ /Fe 2+ ions cycling and iron sludge formation of FeS-based catalysts is challenging. Herein, a strategy combining mechanical activation and pyrolysis was proposed to construct a novel FeS/amorphous carbon nitride (2D/2D FeS/ACN) composite with a two-dimensional (2D) stacked structure, where the FeS and ACN connected by Fe x −N bonds. The removal rates of oxytetracycline, tetracycline, and chlorotetracycline over 2D/2D FeS/ACN both surpassed 96.0 % within 30 min in the photo-Fenton system, and the photo-Fenton system exhibited a much higher total organic carbon (TOC) removal than the Fenton and photo systems, giving an improvement of rate constant to 3.0 and 6.5 times, respectively. The excellent performance attributed to the fact that the photogenerated electrons were trapped by the sulfur vacancy and directed to the Fe active site for Fe 3+ /Fe 2+ cycling via a highly-efficient charge transfer channel (Fe x −N), resulting in efficiently circulating Fe 3+ to Fe 2+ . Moreover, due to the involvement of photogenerated electrons in the reduction of Fe 3+ to decrease the consumption of S (S 2− and S n 2− ), 2D/2D FeS/ACN showed superior stability after five cycles, inhibiting the formation of iron sludge. This work provides a new route for the acceleration of Fe 3+ /Fe 2+ cycling in Fe-based photo-Fenton process for the efficient treatment of tetracycline-based wastewater.
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PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2022
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IF 3.656
Zhenyu Shen,Zhexin Zhu,Gangqiang Wang,Zhendong Wang,Wenxing Chen,Wangyang Lu
It is of great significance for improving the electron transmission performance of graphite phase carbon nitride (g-C 3 N 4 ) by an economical method. Herein, urea was mixed with tourmaline (TM) and calcined to obtain g-C 3 N 4 /TM composite photocatalyst . Under solar light, g-C 3 N 4 /TM activated peroxymonosulfate (PMS) to degrade carbamazepine (CBZ) entirely within 25 min. g-C 3 N 4 /TM had a superior photocatalytic oxidation performance under solar light than g-C 3 N 4 . Photogenerated electron-hole pairs of g-C 3 N 4 were efficaciously suppressed, originating from the more excellent electronic transfer to TM. Four active species, including SO 4 • - , •OH, 1 O 2 , and O 2 • - , were identified for the degradation of CBZ. Ten intermediates of CBZ and six intermediates of sulfaquinoxaline sodium (SQXNa) were determined by using ultra-performance liquid chromatography coupled with a high definition mass spectrometer (UPLC-HDMS), and a degradation pathway was proposed. As the reaction progressed, all aromatic nuclear intermediates were mineralized. The degradation of other organic pollutants by the g-C 3 N 4 /TM/PMS system validated the universal adaptability in practical applications. This research provided an effective way to improve the g-C 3 N 4 photocatalytic activity in wastewater treatment.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Journal of Macromolecular Science Part A-Pure and Applied Chemistry
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2023
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IF 2.5
Chenchen Ma,Zihan Ma,Ziyuan He,Xianjian Wang,Longhao Zhao,Xuegang Chen
Novel hydrophilic polymers consisting of fluorene modified by alkoxyl chain were designed and synthesized via radical polymerization from acrylic acid (PAAF) or acrylamide (PAMF) in the presence of azobisisobutyronitrile. All of these polymers were good water-soluble. The photophysical behaviors of the polymers and the selectivity and sensitivity to detection metal ions were studied by UV-visible and fluorescence spectroscopy technique, and some color changes were visible to the naked eye appeared. The PAMF fluorescent probe showed good selectivity and sensitivity to detection Fe3+ (2.4 × 10−7 mol/L) and PAAF exhibited good selectivity and sensitivity to detection Fe2+ (1.5 × 10−6 mol/L) and Cu2+ (5 × 10−7 mol/L) in water.
研究领域:
高分子化学
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分析化学
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材料科学
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传感技术
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荧光光谱学
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DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 48
·105742-105755
·
IF 5.8
Chang Da,Sun Juanjuan,Wang Chang,Hao Linlin,Zeng Ming
In this work, we have fabricated a novel Fenton-like ferrihydrite/MoS 2 (Fh/MoS 2 ) composite and verified that the introduction of a small amount of iron on the surface of MoS 2 can directly promote the exposure of Mo 4+ , finally enhancing the catalytic activity of the catalyst. Even though the content of iron element is only 1.19% in the composite, the reaction rate constant of Fh/MoS 2 system for the degradation of environmental pollutants, such as organic dyes, antibiotic, and ionic liquid, is all much better than that of pure MoS 2 system, which is attributed to much more generation of reactive oxygen species derived from synergistic effect of Fe 3+ /Fe 2+ and Mo 4+ /Mo 6+ redox cycles. The results of XPS and low-temperature EPR confirm that the exposure amount of Mo 4+ active sites of 10% Fh/MoS 2 is greatly increased, which is conducive to the conversion of Fe 3+ to Fe 2+ in the reaction process, thus effectively promoting the activation of H 2 O 2 .
研究领域:
环境科学
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催化
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材料科学
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DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2026
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IF 4.6
Yingying Chen,Zhihua Liu,Jinshan Liu,Miao Zhou,Zhifeng Liu
The visible-light-driven photoelectro-Fenton technology integrates the synergistic advantages of photoelectrocatalysis and the Fenton reaction. However, the design of current photoanode materials still suffers from issues such as low interfacial charge transfer efficiency and insufficient exposure of active sites. In this study, a novel S-scheme ZnIn 2 S 4 /α-Fe 2 O 3 heterojunction photoanode was successfully constructed. The built-in electric field established at the S-scheme heterointerface effectively facilitates the spatial separation of photogenerated charge carriers. The S O bonds formed at the two-phase interface serve as atomic-level electron transport channels, enabling rapid and directional transfer of photogenerated electrons enriched in the conduction band of ZnIn 2 S 4 to the Fe 3+ sites on the α-Fe 2 O 3 surface, where Fe 3+ is reduced to Fe 2+ . The generated Fe 2+ promotes the conversion of H 2 O 2 to produce hydroxyl radicals (·OH), while the regenerated Fe 3+ from the reaction is again reduced to Fe 2+ by photogenerated electrons, establishing a self-sustaining cycle that endows the system with highly efficient oxidative degradation capability. The results demonstrate that the synergistic mechanism leads to a 5.55-fold increase in the degradation rate. Benefiting from the efficient directional charge transfer and separation, the total organic carbon (TOC) removal efficiency reaches 80.09% within 60 min.
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高影响因子
CHEMOSPHERE
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2020
·
IF 5.778
Fengxia Chen,Daojian Tang,Ya Wang,Tuo Li,Jiahai Ma
A novel catalyst which integrates heterogeneous and homogenous Fenton reactions is designed and fabricated by encapsulating 2,5-dihydroxy-1,4-benzoquinone (2,5-DBQ) in ECDP-Fe 3 O 4 , a composite of Fe 3 O 4 nanoparticles immobilized on a β-cyclodextrin polymer (ECDP) with ethylene diamine tetraacetic acid (EDTA) as cross-linking agent. The 2,5-DBQ@ECDP-Fe 3 O 4 has superior catalytic performance for 4-nitrophenol and 2,4-dichlorophenol degradation compared with control systems. Mechanism study revealed that although the initial active site is Fe 3 O 4 loaded on ECDP, the actually catalyst is the iron ions released from Fe 3 O 4 but confined within the composite. EDTA in β-cyclodextrin polymer can improve both the solubility and adsorption capacity to H 2 O 2 of Fe 3 O 4 . The quinone molecules 2,5-DBQ in the β-cyclodextrin cavity can accelerate Fe 3+ /Fe 2+ cycle adjacent to the cavity, thus in favor of the decomposition of H 2 O 2 into OH as main reactive oxidizing species. The current catalyst integrates the advantages of homogeneous and heterogeneous advanced oxidation processes and is promising in practical applications.
研究领域:
环境科学
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催化
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化学工程
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材料科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
·
IF 8.6
Yuanchuan Ren,Jun Wang,Guangfei Qu,Nanqi Ren,Ping Lu,Xiuping Chen,Zuoliang Wang,Yuyi Yang,Yan Hu
Three-dimensional electrochemical reactor (3DER) is an efficient technology for the treatment of printing and dyeing wastewater. The particle electrode between anode and cathode is the core unit of 3DER, which determines the treatment efficiency of wastewater. However, the deactivation of the particle electrode caused by the coverage of the catalytic sites seriously hindered the continuous operation of 3DER. In this work, γ-Fe 2 O 3 @CNTs particle electrode was prepared by immersion calcination , and its performance was evaluated by degradation of Rhodamine B (RhB) wastewater in 3DER. The study showed that in γ-Fe 2 O 3 @CNTs/Mn@FNE-3DER, the removal rate of RhB reached the best of 99.16% within 7 min under the conditions of γ-Fe 2 O 3 @CNTs dosage of 1.00 g·L -1 , initial RhB concentration of 100 mg·L -1 , pH 7.0, and current density of 20 mA·cm −2 . The superior catalytic activity of the system is mainly due to the charge transfer channel in γ-Fe 2 O 3 @CNTs structure, which improves the mass transfer efficiency of electrons. According to LC-MS analysis, the degradation process of RhB can be divided into five stages: deethylation, chromophore cracking, debenzylation and deamination, ring opening and mineralization. Hydroxyl radicals play an important role in this process. After the reaction, most RhB is converted into CO 2 and H 2 O. In addition, the study also showed that the Fe 3+ /Fe 2+ circulating system formed between the anode and cathode was the important reason for the high degradation efficiency of RhB. After five cycles of experiments, the degradation efficiency of 92.55% was still maintained, indicating that the particle electrode has significant stability and reusability in the catalytic process. To sum up, the excellent performance of γ-Fe 2 O 3 @CNTs particle electrode in three-dimensional electrochemical system provides a promising idea for the actual treatment of printing and dyeing wastewater.
研究领域:
环境工程
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电化学
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水处理
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产品关联
DOI
高影响因子
JOURNAL OF DRUG TARGETING
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2022
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IF 5.016
Linyu Gao,Xiangyang Xuan,Mingli Sui,Jingjing Wang,Yaping Wang,Huijuan Zhang
The nano-drug delivery system activated by the tumour microenvironment (TME) can effectively treat tumours with low toxicity. Based on a high level of reductive GSH in TME and the different coordination properties of Fe ions, this project intended to prepare a GSH-activated cascade catalytic nanoreactor for breast cancer treatment using Fe3+/Fe2+ as the molecular switch. In this study, the glucose oxidase (GOx) loaded iron alginate nano hydrogel (FeAlg/GOx) was prepared by the simple one-step titration method. Results showed that FeAlg/GOx could remain stable during in vivo circulation to avoid hypoglycaemia. When it reached the targeted tumour site, reductive GSH can reduce Fe3+ to Fe2+. Thereafter, FeAlg/GOx nanogel was broken and GOx was released to consume the essential nutrient glucose (Glu) to achieve tumour starvation therapy. Next, the substrate H2O2 generated by the reaction between GOx and Glu can be catalysed by Fe2+ to produce highly cytotoxic •OH in situ, which could further kill tumour cells. The in vivo pharmacodynamics results demonstrated that compared with the control group (V/V0 = 8.36 ± 1.73), FeAlg/GOx group showed the most significant anti-tumour effect with V/V0 of 3.08 ± 1.06. In conclusion, this "inactivated" FeAlg/GOx nanogel can be converted into "activated" therapeutic substances in situ to achieve starvation-chemodynamic combined treatment for breast cancer.
研究领域:
癌症治疗
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纳米技术
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药学
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生物医学工程
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）