CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Zhenzhong Hu,Hongwei Gao,Guoqing Yang,Jingxia Ning,Honghong Lyu,Sheng-qi Guo,Mengmeng Zhen,Jiawei Zhang,Boxiong Shen
Fenton technology is effective in removing high-risk roxarsone (ROX) from the environment. In this study, MoS 2 -modified magnetic iron oxides were successfully synthesized to serve as catalysts for the photo-Fenton system to efficiently degrade ROX. Under light illumination, these catalysts demonstrated strong arsenic adsorption characteristics and photocatalytic activity. The catalyst 6Mo-Fe achieved a 96.15% removal of 20 mg/L ROX and an 88.95% removal of total arsenic within 120 minutes. The study evaluated the effects of catalyst dosage, H 2 O 2 dosage, initial pH, and common anions on the degradation efficiency. The integration of MoS 2 significantly improved the forbidden band width, light absorption capacity, and electrochemical impedance of iron oxides, facilitating the separation and transfer of charge carriers. MoS 2 provided abundant Mo 4+ reduction sites for Fe 3+ , which, in conjunction with the photocatalytic reaction, promoted the cyclic conversion between Fe 3+ and Fe 2+ , thereby markedly increasing the reaction rate. This study presents an innovative approach using MoS 2 -modified iron oxides for the sustainable and eco-friendly degradation of organoarsenic compounds.
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 MATERIALS SCIENCE
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2018
·Vol. 54
·期 5
·4115-4123
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IF 2.993
Zhou Xiang,Zhu Ying,Ke Xiang,Zhang Kaili
In this study, we use simultaneous differential scanning calorimetry and thermogravimetric analysis to analyze the solid-state reaction characteristics of Al/Fe 2 O 3 nanothermites before n -Al melts. Different experimental setups for thermal analysis are compared, and the heat-release characteristics are studied on Al/Fe 2 O 3 nanothermites in the form of powder and pellet, respectively. It is found that protection provided by mere argon flow is far from enough for thermal analysis of Al/Fe 2 O 3 nanothermites. The experimental setup must be free of oxygen; otherwise, the determined exothermic peak is mostly the oxidation of n -Al by the residue oxygen molecules in the furnace body, due to the high reactivity and moderate accessibility of free oxygen molecules. Under proper experimental setup, it is found that besides the redox reaction between n -Al and n -Fe 2 O 3 , intermetallic reaction also occurs to form Fe 4 Al 13 . Moreover, the intermetallic reaction is more noticeable for nanothermite pellet than for nanothermite powder, and the eutectic reaction of Fe 4 Al 13 and n -Al leads to melting peaks below 655 °C. The results indicate that instrument configuration and sample status affect the testing results to a large extent, and one should be prudent to derive reaction characteristics of nanothermites.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2016
·Vol. 27
·期 7
·6829-6834
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IF 1.798
Su Chang,Li Yu,Li Shouchun,Liu Li,Guo Xuexin,Lian Hongwei,Guan Xiulong
Pure and Pr-doped α-Fe 2 O 3 nanotubes are successfully synthesized via electrospinning and following calcined method. The crystal, morphologies structures and composed of the as-prepared samples are investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS), respectively. The researches of the gas sensing properties of the samples show that Pr-doped α-Fe 2 O 3 nanotubes possess excellent sensitive to ethanol, and the response value of Pr-doped α-Fe 2 O 3 nanotubes to 10 ppm ethanol is 21.3 at the operating temperature 240 °C, which is much higher than that of pure α-Fe 2 O 3 nanotubes (1.5). That is to say that the ethanol sensitive of α-Fe 2 O 3 nanotubes is improved remarkably by doping Pr. Moreover, Pr-doped α-Fe 2 O 3 nanotubes show good selectivity and long-term stability.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
RSC Advances
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2016
·Vol. 6
·期 26
·22174-22178
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IF 3.289
Dezhang Ren,Jun Fu,Lu Li,Yunjie Liu,Fangming Jin,Zhibao Huo
An efficient process for the production of levulinate esters from biomass-derived furfuryl alcohol in liquid alcohol over commercial α-Fe2O3 was firstly investigated. Among the catalysts we tested, α-Fe2O3, a cheap, commercially available and environmentally benign catalyst, exhibited a remarkable catalytic performance for the transformation and gives levulinate esters in good yield compared to the previous studies. The corresponding esters such as methyl levulinate, ethyl levulinate and butyl levulinate were obtained in high yields under optimized reaction conditions. Several influence factors for the formation of levulinate esters were also discussed. A plausible reaction mechanism for the formation of levulinate ester from furfuryl alcohol was proposed. From the viewpoint of practice and economy, the present study provides a potential application for the efficient synthesis of fine chemicals from biomass-derived compounds over cheap, commercially available and environmentally benign catalysts.
研究领域:
化学工程
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可再生资源利用
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DOI
高影响因子
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMINANTS AND AGRICULTURAL WASTES
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2025
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IF 1.8
Chenxi Zhang,Jingyi Wang,Sile Liu,Yue Han,Jinyu Wang,Hailong Wang
The widespread use of antibiotics has led to significant water pollution. Photocatalysis can effectively degrade antibiotics, but the performance is greatly limited by the photogenerated carrier recombination in the photocatalytic material g-C3N5. Constructing heterojunctions can enhance interfacial charge transfer, leading to more stable and efficient photocatalysis. This study synthesized a Fe2O3/g-C3N5 heterojunction using the solvothermal method. The Z-scheme charge transfer mechanism facilitated efficient separation of photogenerated carriers, preserving photoelectrons and holes with high redox activity. This process generated a substantial amount of highly reactive free radicals such as ·O2− and ·OH, enabling the efficient degradation of tetracycline (TC). Under the optimal conditions of initial concentration of TC was 200 mg/L, the quality ratio of Fe2O3 and g-C3N5 was 1:2, the catalyst dosage was 50 mg and pH = 7.0, the TC degradation rate reached 92.46% within 60 min of visible light irradiation. The photocatalytic activity’s enhancement was attributed to broad spectral absorption and effective photogenerated carrier separation. Furthermore, the photocatalytic performance can be affected by the presence of inorganic salt ions such as HCO3− and CO32−.
研究领域:
环境科学
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材料科学
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生物学
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产品关联
DOI
PubMed
高影响因子
Crystals
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2023
·Vol. 13
·期 5
·810
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IF 2.7
Ruonan Tian,Huai Tan,Gang Chen,Hongtao Guan,Chengjun Dong,Zongyou Yin
Although individual γ-Fe2O3and α-Fe2O3have been widely fabricated for gas sensors, their mixed phase of α/γ-Fe2O3might deliver excellent sensing properties. In this study, a facile solvothermal method was used to fabricate Fe-alkoxide. After thermal treatment, it was converted into γ-Fe2O3, α-Fe2O3and their mixed-phase α/γ-Fe2O3with a nanosheets-assembled flower-like structure. We studied the influence of calcination temperature on the phase and sensing properties on acetone detection. The α/γ-Fe2O3which annealed at 400 °C included 18% α-Fe2O3and it exhibited excellent sensing performance towards acetone compared to that of γ-Fe2O3and α-Fe2O3. It showed a response of 353 to acetone with a concentration of 200 ppm, and a low limit of detection of 0.5 ppm at 160 °C. In addition, the change in responses with acetone concentration from 50 to 200 ppm shows a good linear relationship. Moreover, this material has good reproducibility and selectivity as well as a fast response time of 22 s and recovery time of 14 s to 200 ppm. Therefore, our mixed phase of α/γ-Fe2O3possesses great prospects for acetone detection.Keywords:Fe2O3;phase;gas sensor;acetone;sensing performance
研究领域:
材料科学
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化学
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DOI
高影响因子
RSC Advances
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2016
·Vol. 6
·期 74
·70547-70552
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IF 3.289
Qiu-Yun Chen,Dong-liang Huang,Yin-Bing Wang,Jian Shao,Ling-Ling Qu
The development of dye-loaded nanosorbcats can make best use of their advantages in removing dyes from wastewater, also bypassing their disadvantages. Herein, functionalized Fe2O3 nano-rods (pfa@Fe2O3) were synthesized by using tween-80 induced assembly of pyrrol-2-methanoic acid (pfa) and iron(III) salts, and characterized by FT-IR, XRD, EPR, and SEM. The pfa@Fe2O3 nanorods’ adsorption capacity for methylene blue (MB) was 450 mg g−1 compared to only 39 mg g−1 for α-Fe2O3. Moreover, the kinetics to reach equilibrium were approximately 0.5 h and the pfa@Fe2O3 nanorods can be used as efficient recyclable adsorbents for MB. In particular, the MB loaded MB@pfa@Fe2O3–water system could also be used as dioxygen generator when irradiated with red LED light (10 W). The light induced intramolecular charge transfer between catalysts and photosensitizers was more efficient in the MB@pfa@Fe2O3/H2O system, and it exerted higher activity for water oxidation than the traditional catalyst/Ru(bpy)32+ system. Control experiment results suggested that the α-Fe2O3 can’t be used as LED light driven catalysts for water oxidation. In conclusion, the MB@pfa@Fe2O3 nanorods were efficient recyclable nanosorbcats for LED-light-driven dioxygen generation using water as oxygen source.
研究领域:
材料科学
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环境科学
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光化学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Zhijie Cui,Zhibo Yan,Jie Yin,Wenpin Wang,Mei-E Yue,Zhongcheng Li
Tailoring surface composition and coordinative environment of catalysts in a nano-meter region often influence their chemical performance. It is reported that CoP exhibits a low dissociation ability of H–OH, originating from the poor desorption of intermediate species. Herein, we provide a feasible method to construct P-Fe 2 O 3 -CoP nanosheets through a gas-phase phosphorization process. P doping induces the formation of interfacial structure between Fe 2 O 3 and CoP and the generation of defective structures. The resulting P-Fe 2 O 3 -CoP nanosheets afford high freshwater/seawater oxidation activity (250/270 mV@10 mA/cm 2 ) in 1 mol/L (M) KOH, which is even lower than commercial RuO 2 . Compared with CoP||CoP, P-Fe 2 O 3 ||P-Fe 2 O 3 , and Co 3 O 4 ||Co 3 O 4 , the assembled P-Fe 2 O 3 -CoP||P-Fe 2 O 3 -CoP exhibits the superior water/seawater electrolysis performance with 1.61/1.65 V@10 mA/cm 2 . The synergistic effect of P doping, defective structure, and heterojunction leads to high water oxidation efficiency and water splitting efficiency.
研究领域:
材料科学
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催化化学
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产品关联
DOI
PubMed
高影响因子
Royal Society Open Science
·
2018
·Vol. 5
·期 6
·
IF 2.504
Xiangyun Han,Xi Zhang,Lei Zhang,Mei Pan,Jinlong Yan
The photodegradation of benzothiazole (BTH) in wastewater with the coexistence of iron oxides and oxalic acid under UV light irradiation was investigated. Results revealed that an effective heterogeneous photo-Fenton-like system could be set up for BTH abatement in wastewater under UV irradiation without additional H2O2, and 88.1% BTH was removed with the addition of 2.0 mmol l−1 oxalic acid and 0.2 g l−1 α-Fe2O3 using a 500 W high-pressure mercury lamp (365 nm). The degradation of BTH in the photo-Fenton-like system followed the first-order kinetic model. The photoproduction of hydroxyl radicals (·OH) in different systems was determined by high-performance liquid chromatography. Identification of transformation products by using liquid chromatography coupled with high resolution tandem mass spectrometry provided information about six transformation products formed during the photodegradation of BTH. Further insight was obtained by monitoring concentrations of the sulfate ion (SO42−) and nitrate ion (NO3−), which demonstrated that the intermediate products of BTH could be decomposed ultimately. Based on the results, the potential photodegradation pathway of BTH was also proposed.
研究领域:
环境科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
Scientific Reports
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2019
·Vol. 9
·期 1
·1-8
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IF 4.011
Wang Xiangnan,Liu Tao,Yu Jingkun
(4YSZ) 0.93 (Fe 2 O 3 ) 0.07 and 9 mol% Y 2 O 3 stabilized ZrO 2 (9YSZ) were synthesized by co-precipitation method and their crystalline structure, microstructure, electronic conductivity, total conductivity were characterized. A limiting current oxygen sensor was assembled with (4YSZ) 0.93 (Fe 2 O 3 ) 0.07 dense diffusion barrier and 9YSZ solid electrolyte by Pt sintered-paste method. Influences of temperature ( T ), oxygen concentration ( x (O 2 )) and water vapor pressure ( p (H 2 O)) on sensing characteristics of the limiting current oxygen sensor were investigated. The crystalline structure of (4YSZ) 0.93 (Fe 2 O 3 ) 0.07 and 9YSZ belong to cubic structure with \({\bf{Fm}}\overline{{\bf{3}}}{\bf{m}}\) . The total conductivity of (4YSZ) 0.93 (Fe 2 O 3 ) 0.07 is higher than that of 9YSZ and the electronic and total conductivities of the samples meet the linear relationship with 1000/ T . The limiting current oxygen sensor exhibits excellent sensing characteristics under test conditions. The effects of T , x (O 2 ) and p (H 2 O) are as follows: Log( I L · T ) depends linearly on 1000/ T , I L depends linearly on x (O 2 ) and I L is not significantly dependent on p (H 2 O).
研究领域:
材料科学
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传感器技术
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产品关联
DOI
PubMed
高影响因子
NANOTECHNOLOGY
·
2015
·Vol. 26
·期 42
·425101
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IF 3.821
Jun Zhou,Jinghua Li,Xingwei Ding,Junjie Liu,Zhong Luo,Yun Liu,Qichun Ran,Kaiyong Cai
In recent years, magnetic hyperthermia nanoparticles have drawn great attention for cancer therapy because they have no limitation of tissue penetration during the therapy process. In this study, cubic nanoporous Fe2O3 nanoparticles derived from cubic Prussian blue nanoparticles were used as magnetic cores to generate heat by alternating the current magnetic field (AMF) for killing cancer cells. In addition, polypyrrole (PPy) was coated on the surfaces of the cubic Fe2O3 nanoparticles to load doxorubicin hydrochloride (DOX). The PEG component was then physically adsorbed onto the surfaces of the nanoparticles, resulting in a Fe2O3@PPy-DOX-PEG nanocomposite. The nanocomposite was triggered by acid stimulus and AMF to release DOX, resulting in a remarkable combination therapeutic effect via chemotherapy and magnetic hyperthermia. Furthermore, the nanocomposite could realize magnetic resonance imaging (MRI) due to the magnetic core structure. The study provides an alternative for the development of new nanocomposites for combination cancer therapy with MR imaging in vivo.
研究领域:
生物医学工程
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肿瘤学
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材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2019
·
IF 4.175
Zhiyang Li,Yuning Mao,Qinghua Tian,Wei Zhang,Li Yang
As the concept of promoting environmental protection and energy conservation becomes more and more popular, reasonably green approaches for preparing high-performance nanostructured Fe 2 O 3 anodes will be well received. Herein, porous Fe 2 O 3 quasi-clusters assembled by smaller secondary nanoparticles have been successfully prepared by direct calcination of commercial ferric citrate in air atmosphere. Comparing with the traditionally hydrothermal methods of preparing various nanostructured Fe 2 O 3 , our approach are more facile and green because of no use of various solvents and reagents, and additional time- and power-consuming hydrothermal treatment. More importantly, the as-prepared Fe 2 O 3 quasi-clusters show excellent electrochemical performance, delivering high capacities of 1187.1 and 448.3 mAh g −1 at 200 and 3000 mA g −1 after 350 and even 1500 cycles, respectively. Even comparing with the reported state-of-the-art nanostructural Fe 2 O 3 anodes, the performance of as-prepared Fe 2 O 3 quasi-clusters is competitive and even better. Thus, due to the relatively green and extremely facile preparation process, and excellent electrochemical performance, the as-achieved Fe 2 O 3 quasi-clusters are expected as a promising candidate for advanced anode materials of lithium-ion batteries.
研究领域:
材料科学
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能源技术
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）