INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2012
·
IF 4.054
Ying Liu,Dong-Ping Wang,Yu-Xiang Yu,Wei-De Zhang
Functional carbon nanotubes (CNTs) were incorporated into Ti-doped Fe 2 O 3 thin films by a facile, one-step co-electrodeposition method. The films were characterized by X-ray diffraction, scanning electron microscopy, UV–visible absorption, and X-ray photoelectron spectroscopy. The introduction of CNTs results in a better absorption in visible region and greatly enhances the photoelectrochemical properties of the Ti–Fe 2 O 3 films. The improved photoelectrochemical properties of the CNTs and Ti co-doped Fe 2 O 3 films are due to the charge equilibration which interplays between the Ti–Fe 2 O 3 and CNTs. The effect of CNTs to mediate fast charge transfer and to retard charge recombination rate in the composites is also demonstrated by kinetics analysis and electrochemical impedance spectroscopy . The influence of different groups-modified CNTs and different content of CNTs was also studied. The highest photocurrent is 4.5 mA/cm 2 at 1.23 V (vs. RHE) obtained by incorporating 0.10 mg/mL amino-group modified CNTs in the Ti–Fe 2 O 3 film. The amino-functionalized CNTs doped film exhibits the highest photoelectric response compared with those doped by the pristine and acid-treated CNTs under the same conditions, which can be ascribed to the better hydrophilicity and dispersibility of the amino-functionalized CNTs.
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2017
·Vol. 7
·期 81
·51512-51520
·
IF 3.108
Minmin Liu,Lin Zhang,Bei-dou Xi,Shuili Yu,Xiaojun Hu,Li-an Hou
The activation of persulfate (PS) by metal catalysts under visible light is expected to offer a promising oxidation reaction for the removal of contaminants from water. Herein, we investigated activated PS systems under visible light irradiation for the generation of reductive species to decompose ciprofloxacin (CIP). Improved PS activation using TiO2/Fe2O3/zeolite ((n)TiFeZ) under visible light irradiation favorably leads the reaction to generate reductive radicals. The enhanced degradation efficiencies of the (n)TiFeZ–PS system for CIP removal was due to the extended absorbance in the visible-light region and improved space separation of photo-induced charge carriers. The (4)TiFeZ catalyst exhibited better performance for CIP removal as compared to the other samples. The CIP was completely degraded in 120 min using 1 g L−1 (4)TiFeZ and 5.0 mM PS at pH 7.0. The characterization and electron paramagnetic resonance (EPR) of (n)TiFeZ suggested that CIP was mainly degraded by surface-adsorbed radicals generated from the reaction between PS and Fe(II) on the samples under visible light. The reductive systems coupled with (n)TiFeZ exhibited high CIP degradation efficiency and high potential for the decomposition of other antibiotic compounds.
✓ 已验证
产品关联
DOI
高影响因子
PROPELLANTS EXPLOSIVES PYROTECHNICS
·
2024
·Vol. 49
·期 5
·e202300285
·
IF 1.7
Mi Li,Zhongxuan Han,Lin Jiang,Guozhong Xu
Nano-thermite has become a subject of significant interest in the composite energetic materials field due to its high energy release rate. To cater to diverse engineering needs, thermite formulations are often customized to fulfill specific criteria. This study investigates the potential of metal nickel (Ni) as an additive to modify nano-thermite formulations, selected for its optimal calorific values and chemical reactivity. The base materials, nano-aluminum (Al) and iron oxide (Fe 2 O 3 ), are blended with varying mass ratios of Ni (1 %, 3 %, 5 %, 7 %, 9 %) using the wet ball milling method. Pre-reaction and post-reaction morphological and compositional alterations in the resultant thermite samples are scrutinized through SEM and XRD characterization tests. Moreover, DSC analysis and combustion experiments were conducted to examine the pyrolysis and combustion behaviors of the evaluated samples. The results reveal a reduced exothermic peak on the DSC curves with the introduction of Ni, making the liquid-solid ( L - S ) phase reaction more challenging compared to the Al/Fe 2 O 3 thermite. Intriguingly, Ni addition progressively decreases the combustion temperature of thermites as the Ni's mass ratio increases, with a peak efficiency at 7 % in the perforation tests on stainless-steel plates. This research further reveals that the thermite reaction mechanism is a combined consequence of the “pre-ignition-fusion” and “fusion-diffusion” mechanisms. These insights can provide valuable guidance for designing thermite formulations for potential applications in storage, management, and pyrotechnic cutting areas.
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2024
·Vol. 17
·期 7
·1598
·
IF 3.1
Yongqi Liu,Shasha Chu,Yuebing Xu,Xinyu Chen,Hao Zhou,Jinlin Li,Yanjie Ren,Xintai Su
Upcycling Cr-containing sulfate waste into catalysts for CO2hydrogenation reaction benefits both pollution mitigation and economic sustainability. In this study, FeCrO3/Fe2O3catalysts were successfully prepared by a simple hydrothermal method using Cr-containing sodium sulfate (Cr-SS) as a Cr source for efficient conversion and stable treatment of Cr. The removal rate of Cr in Cr-SS can reach 99.9% at the optimized hydrothermal conditions. When the synthesized catalysts were activated and used for the CO2hydrogenation reaction, a 50% increase in CO2conversion was achieved compared with the catalyst prepared by impregnation with a comparable amount of Cr. According to the extraction and risk assessment code (RAC) of the Reference Office of the European Community Bureau (BCR), the synthesized FeCrO3/Fe2O3is risk-free. This work not only realizes the detoxification of the Cr-SS but transfers Cr into stable FeCrO3for application in a catalytic field, which provides a strategy for the harmless disposal and resource utilization of Cr-containing hazardous waste.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
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.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Lin Ma,Xiaotong Chen,Hua Kang,Zijiang Liu,Guixin Wan,Shuyi Ma,Tingting Wang,Liang Cheng,Nina Ma,Ping Ni
Recently, materials derived from metal-organic frameworks (MOFs) have garnered increasing attention owing to their exceptional gas-sensing performance. In this study, hollow ship-like α-Fe 2 O 3 with oxygen vacancy defects and thin shells were successfully synthesized via a simple calcination method using MIL-88A (Fe) as a precursor. Characterization results revealed that the α-Fe 2 O 3 exhibited a porous structure composed of nanoparticles featuring a rough surface. Notably, under the optimum operating temperature of 180 °C, the sensor based on α-Fe 2 O 3 demonstrated remarkable performance in detecting triethylamine gas (TEA), exhibiting an ultra-high response (527 at 50 ppm), rapid response/recovery times (20/8 s at 2 ppm), and excellent selectivity. These outstanding TEA-sensing properties are primarily attributed to the unique morphologic structures and suitable defects, suggesting that this research will facilitate the efficient and rapid development of high-performance gas sensors for TEA.
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Gongao Jiao,Peilin Jia,Yong Zhang,Hao Zhang,Jieshuo Zhai,Zuozhe Ding,Dongzhi Zhang
In this work, Fe 2 O 3 nanoparticles were synthesized through a simple hydrothermal method, and a high-performance Fe 2 O 3 -In 2 O 3 heterojunction hydrogen sensor was successfully fabricated via electrospinning. The morphology and elemental composition of the composite material were characterized through scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. A systematic performance test of the sensor was conducted using an experimental testing platform. The optimal doping ratio of Fe 2 O 3 was explored, and the sensor's optimal operating temperature was found to be 280°C. At this temperature, the sensor exhibited a response of 32.95 to 2000 ppm hydrogen, which is 7.6 times higher than that of the pristine In 2 O 3 , along with rapid response/recovery times (1.5 s/16 s), rosy selectivity, and stability. The improved sensor performance can be primarily ascribed to the creation of the heterojunction and the expanded specific surface area of the materials. The adsorption energy, charge transfer, and other properties of the Fe 2 O 3 -In 2 O 3 composite were calculated using density functional theory, further elucidating the reasons for the improvement in sensor performance.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Chengjun Dong,Ruonan Tian,Yanlin Zhang,Kaili Liu,Gang Chen,Hongtao Guan,Zongyou Yin
Rational integration of multifunctions is an emerging strategy to develop novel chemiresistor nano platforms with superior sensing properties. Herein, a stepwise synthesis strategy is developed to assemble two MOFs with huge mismatch into MOF-on-MOF heterojunction , which was nanoarchitectured into Fe 2 O 3 @ZnFe 2 O 4 radial-heterospindles. The Fe 2 O 3 @ZnFe 2 O 4 heterospindles exhibited outstanding selective acetone detection with multifaceted superiorities, such as high response, low limit of detection, fast response and recovery time, and good linearity in responses with a wide concentration window. An in-depth discussion revealed that such multifaceted sensing characters can be attributed to the distinct radial-heterostructure which proffer synergetic effects in the unimpeded gas diffusion with mesoporous sensing nanoarchitecture, favored interfacial charge transport in radial heterojunction, abundant active adsorption/reaction sites by rich oxygen vacancies, and exponential/efficient tuning of sensor resistance with barrier height. This synthetic strategy here may offer a new opportunity for fabricating dual-to-multi MOFs-based advanced nanostructures towards practical chemiresistor nanoplatforms with favorable multifaceted superiorities.
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2018
·Vol. 42
·期 24
·20032-20040
·
IF 3.201
Yue-Wei Sun,Lan-Zhi Wang
Several novel three-component or domino reactions that enable a variety of unique heterocyclic scaffolds through carbon–carbon and carbon–nitrogen bond formations are herein reported. These reactions employing a one-pot strategy provide an efficient approach for the synthesis of benzodiazepines with tricyclic or tetracyclic systems containing aryl, carboxyl, ester and acyl groups. The main objective of this methodology is to achieve the compatibility of various functional groups via introducing active groups under mild reaction conditions. 40 new compounds were successfully synthesized in good to excellent yields (82–97%) from readily available 1,2-phenylenediamine, β-cyclodione and aldehyde derivatives by using a mild catalyst (γ-Fe2O3@SiO2/CeCl3). Structures of all the products were fully confirmed by spectroscopic techniques and by recording the single crystal XRD of 5bac. Moreover, a plausible reaction mechanism has been proposed.
研究领域:
有机化学
·
药物化学
✓ 已验证
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2025
·
IF 6.4
Yujie Wang,Ziqi Zhong,Guowu Zhan,Jingran Xiao
Molybdenum (Mo) doping has been recognized as an effective strategy to enhance the low-bias performance of hematite (Fe2O3) photoanodes in photoelectrochemical (PEC) water splitting. This study develops a mild hydrothermal strategy for incorporating Mo into Fe2O3 photoanodes, forming a Mo–O–Fe surface layer while avoiding the morphological degradation associated with conventional calcination. Although this modification enhances bulk charge separation and surface charge injection, the resulting Mo–O–Fe interface suppresses the functionality of directly deposited FeNi oxyhydroxide cocatalysts, yielding limited performance gains. To overcome this limitation, a hydroxyethylidene diphosphonic acid (HEDP) interlayer is introduced, which enables synergistic cooperation among the three components. It is plausible that HEDP acts as a hole-transfer mediator, shuttling holes from Mo–O–Fe surface states to the FeNi cocatalyst. The optimized FeNi/HEDP/Mo-Fe2O3 photoanode achieves a notable photocurrent density of 1.26 mA cm−2 at a low bias of 0.90 V vs. RHE and an onset potential of 0.59 V vs. RHE. The synergistic combination of mild hydrothermal doping and molecular interfacial engineering presented here provides a conceptual blueprint for the rational design of photoelectrodes, highlighting the critical need to manage interfacial charge dynamics to achieve high efficiency in the low-bias regime.
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2025
·
IF 12.1
Xiaohang Yang,Zhiqiang Sun,Panxin Wang,Qi Wang,Qiong Li,Xingbo Bian
Soil salinity is a critical abiotic stressor that disrupts plant growth by impairing redox balance, membrane stability, and metabolic coordination. While nanomaterials have emerged as promising abiotic stress modulators, the influence of nanoscale architecture on multi-level plant responses remains insufficiently understood. Here, we report the design and application of pinwheel-like α-Fe 2 O 3 @Ag nanohybrids, engineered through controlled hydrolysis, ball milling, and high-temperature calcination, to reprogram salt stress responses across physiological and molecular scales. These hybrids exhibit hierarchical anisotropic structures that promote leaf adhesion, cellular uptake, and redox interface activity. Integrated multi-omics analyses reveal that α-Fe 2 O 3 @Ag enhances stress tolerance by modulating antioxidant defense, preserving photosynthetic efficiency, and rebalancing osmotic and hormonal pathways. At the molecular level, the nanohybrids induce transcriptomic and metabolomic rewiring across key axes, including unsaturated fatty acid metabolism, sulfur assimilation, hormone signaling (ABA and JA), and protein turnover. This study presents a structure-function-response framework linking nanomaterial morphology to biological outcomes, and highlights the potential of hybrid nanoregulators as versatile tools for enhancing crop resilience under environmental stress. The findings offer conceptual and practical advances for developing next-generation nano-enabled strategies in sustainable agriculture.
研究领域:
纳米技术
·
植物生理学
·
胁迫生物学
·
农业纳米技术
·
系统生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Qian Zhu,Yanbo Wu,Lei Cao,Lanlan Fan,Liang Xu,Shixian Xiong
Developing cost-effective and durable oxygen reduction reaction (ORR) electrocatalysts is pivotal for the commercialization of zinc-air batteries (ZABs). Herein, nitrogen-doped porous carbon-supported Fe 2 O 3 /CeO 2 heterojunction electrocatalysts (Fe 2 O 3 /CeO 2 @NC) were synthesized via a supramolecular confinement strategy. By leveraging the melamine-folic acid framework to anchor FeCe Prussian blue analogues, a hierarchical porous carbon structure with uniform heterojunction nanoparticle dispersion was successfully constructed. Experimental characterization and DFT calculations reveal that the distinct work function difference between Fe 2 O 3 and CeO 2 induces spontaneous electron transfer, establishing a built-in electric field at the heterointerface. Synergized with abundant oxygen vacancies, this electronic modulation effectively optimizes the adsorption free energy of oxygen intermediates and lowers the rate-determining energy barrier. Consequently, the Fe 2 O 3 /CeO 2 @NC catalyst exhibits superior ORR activity with a half-wave potential of 0.83 V, rivaling commercial Pt/C, along with excellent methanol tolerance. Furthermore, the assembled liquid ZABs deliver a high peak power density of 146.4 mW cm −2 and demonstrate robust rechargeability for over 200 h, highlighting its potential for practical energy conversion applications.
✓ 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）