Frontiers of Chemical Science and Engineering
·
2023
·Vol. 18
·期 1
·1-9
·
IF 4.5
Sun Likun,Xiong Kesi,Zhang Baoning,Fang Jinghong,He Yingchao,Wang Min,Gan Zhixing,Du Fanglin,Sun Qiong,Yu Liyan,Dong Lifeng
In a dual-chamber photocatalytic fuel cell device, polyvinyl alcohol degradation and H 2 evolution were concurrently achieved. The setup involved commercial P25 as the photoanode and Ag@Fe 2 O 3 nanoparticles as the cathode. Additionally, the feasibility of a Fenton-like reaction in the cathode, utilizing Fe 2+ ions and pumped O 2 , was demonstrated. Different cathode materials, polyvinyl alcohol types, and pH values’ effects were assessed on device performance. Quenching tests highlighted photoinduced holes (h + ) and OH· radicals as pivotal contributions to polyvinyl alcohol degradation. Long-term stability of the device was established through cycling experiments.
研究领域:
环境科学
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材料科学
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能源科学
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DOI
高影响因子
Frontiers of Environmental Science & Engineering
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2021
·Vol. 15
·期 6
·1-12
·
IF 4.357
Meng Fanling,Xia Yunxue,Zhang Jianshuai,Qiu Dong,Chu Yaozhu,Tang Yuanyuan
Chromium slag usually contains various heavy metals, making its safe treatment difficult. Glass-ceramic sintering has been applied to resolve this issue and emerged as an effective method for metal immobilization by incorporating heavy metals into stable crystal structures. Currently, there is limited knowledge about the reaction pathways adopted by multiple heavy metals and the co-stabilization functions of the crystal structure. To study the Cu/Cr co-stabilization mechanisms during thermal treatment, a simulated system was prepared using a mixture with a molar ratio of Al 2 O 3 :Fe 2 O 3 :Cr 2 O 3 : CuO = 1:1:1:3. The samples were sintered at temperatures 600–1300°C followed by intensive analysis of phase constitutions and microstructure development. A spinel phase (CuFe x Al y Cr 2− x − y O 4 ) started to generate at 700°C and the incorporation of Cu/Cr into the spinel largely complete at 900°C, although the spinel peak intensity continued increasing slightly at temperatures above 900°C. Fe 2 O 3 /Cr 2 O 3 was more easily incorporated into the spinel at lower temperatures, while more Al 2 O 3 was gradually incorporated into the spinel at higher temperatures. Additionally, sintered sample microstructures became more condensed and smoother with increased sintering temperature. Cu / Cr leachability substantially decreased after Cu/Cr incorporation into the spinel phase at elevated temperatures. At 600°C, the leached ratios for Cu and Cr were 6.28% and 0.65%, respectively. When sintering temperature was increased to 1300°C, the leached ratios for all metal components in the system were below 0.2%. This study proposes a sustainable method for managing Cu/Cr co-exist slag at reasonable temperatures.
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
CHEMISTRY-A EUROPEAN JOURNAL
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2026
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IF 3.6
Lin Zhou,Zhanghong Guo,Haining Cui,Jinxin Ma,Chan Wang,Qijun Song
Direct transformation of biomass-derived platform compound 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) represents a highly attractive route with significant environmental and economic benefits. The nanozymes with oxidase-like (OXD-like) activity hold great promise for the green oxidation of HMF to FDCA. Herein, an iridium-coated γ-Fe 2 O 3 core-shell nanozyme (γ-Fe 2 O 3 @Ir) was prepared by the reduction of Ir 3+ with glycerol on the surface of γ-Fe 2 O 3, and the structure of the γ-Fe 2 O 3 @Ir nanozyme was confirmed by XRD, HAADF-STEM image, and elemental line-scan analyses results. The magnetic property of the nanozyme not only facilitates its recovery but also effectively enhances its affinity to oxygen. By employing γ-Fe 2 O 3 @Ir nanozyme as the catalyst and atmospheric oxygen as a green oxidant, a near-quantitative conversion (98.5%) of molar level HMF to FDCA was achieved.
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DOI
PubMed
高影响因子
BIORESOURCE TECHNOLOGY
·
2026
·
IF 8.2
Li Sun,Cao Zhenzhou,Cui Jixian,Huang Liuyang,Qi Xiaonan,Wei Yanjie,Li Xianhui
Developed Fe 2 O 3 NPs-embedded membranes to overcome gas–liquid mass transfer limits. • Fe 2 O 3 NPs raise surface area and add C O groups, thereby enhancing CO 2 adsorption. • Fe 2 O 3 NPs-nanofiber membranes enhance biomass, CO 2 fixation, and delay decline. • Fe 2 O 3 NPs promote stable biofilm formation, enhancing initial attachment and growth. • Fe 2 O 3 NPs enhance ATP, photosynthesis and XDLVO adhesion for CO 2 fixation performance. Algae-based carbon capture and utilization (CCU) technique offers a sustainable strategy for CO 2 mitigation, but its efficiency is often limited by poor gas–liquid mass transfer and unstable carbon availability. Here, this study developed an iron oxide nanoparticle (Fe 2 O 3 NPs)-incorporated electrospun nanofiber membrane to enhance CO 2 capture and microalgal fixation. Results revealed that the Fe 2 O 3 NPs was able to reduce fiber diameter, refine pore architecture, and increase specific surface area, thereby the improved CO 2 adsorption. In Chlorella cultivation, the final biomass concentration and CO 2 biofixation rate of modified membrane increased by respective 11.6%±1.2% and 14.3% compared with that of pristine nanofibers. Furthermore, the modified membrane significantly promoted the early-stage biofilm formation, yielding biofilms that were 47.9% thicker, denser, and exhibited increased rougher surface. Nanoparticle-induced “microhooks”, together with enhanced EPS secretion, strengthened algal attachment, increased cell density, and improved spatial homogeneity, thus creating a favorable microenvironment for rapid biofilm development. Cellular analyses demonstrated that membranes modified with Fe 2 O 3 NPs increased intracellular ATP by 45.6%, superoxide dismutase activity by 39.9%, and specific growth rate by 41.8% compared to the blank controls, indicating enhanced metabolic activity and stress resistance. Physicochemical characterization further showed that a reduction in electrostatic repulsion and an increase in hydrophobicity. Meanwhile, Lifshitz-van der Waals (U LW ) and Lewis acid-base (U AB ) interaction energies increased by approximately twofold and 2.74-fold, respectively. These changes synergistically enhanced initial algal adhesion and attachment stability, facilitating CO 2 enrichment. In summary, this work elucidates the synergistic bio-physicochemical mechanisms underlying nanoparticle-modified membranes and specify their potential for advancing efficient microalgae-based CCUS technologies. Download: Download high-res image (191KB) Download: Download full-size image
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AQUATIC TOXICOLOGY
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2026
·
IF 4.6
Sai Wu,Chunhui Zhang,Hongwen Sun,Cuiping Wang
Understanding the size-dependent behavior of iron oxide nanoparticles in crop systems is critical for assessing their environmental risks and application potential. In this study, α-Fe 2 O 3 materials with particle sizes of 25 nm, 200 nm, and 400 nm were successfully synthesized and systematically evaluated for their transport, transformation, and physiological effects on rice. Among these, the 25 nm α-Fe 2 O 3 exhibited a higher zeta potential, facilitating electrostatic interaction with the negatively charged rice surface. Exposure to α-Fe 2 O 3 increased the formation of iron plaque on root surfaces, with the most pronounced effect observed for the 25 nm particles. While iron plaque enhanced the immobilization of metal elements on the root surface, it concurrently hindered the uptake of both metal and non-metal elements by rice roots. Root exudates secretion was stimulated by α-Fe 2 O 3 exposure, with larger particles inducing a more pronounced secretory response at equivalent concentrations (TOC increased by 12.91-23.82%). Electron transfer interactions between α-Fe 2 O 3 and root exudates occurred in the rhizosphere, leading to the reduction of Fe(III) to Fe(II), large particle size α-Fe 2 O 3 induces more root exudates and more pronounced Fe (III)/Fe (II) transformation. Rice growth was promoted by exposure to 50 mg/L of 25 nm α-Fe 2 O 3 , but inhibited at 500 mg/L. In contrast, larger particles consistently promoted growth, albeit with diminished efficacy at higher concentrations. Exposure to α-Fe 2 O 3 , particularly the 25 nm particles, triggered significant increases in reactive oxygen species (ROS) levels, plasma membrane permeability, antioxidant enzyme activities, and lipid peroxide content in rice roots. These findings provide a mechanistic basis for understanding the size-dependent phytotoxicity and transformation behavior, and offering insights for its application in controlling pollutant migration in agricultural systems.
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产品关联
DOI
PubMed
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
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2025
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IF 4.6
Yunsheng Shang,Xue Zhang,Xuemei Wang,Jin Yang,Xinxin Shi,Lu-Lu Qu,Yingqiu Gu
Noble metal aggregates have received increasing interest in environmental monitoring and biological analysis as SERS substrates due to their high sensitivity. Depositing nanoparticles onto oxide support presents an effective approach for assembling noble metals. In this study, Au@Fe 2 O 3 composite substrates were utilized for SERS detection. Low detection limits for 4-MBA (LOD 4-MBA = 4.79 × 10 −9 M) and MB (LOD MB = 3.36 × 10 −9 M) demonstrate this SERS technique has high sensitivity. The target molecule signal did not show a significant decline, indicating good temporal stability of the substrate. The synergistic effects arising from the electromagnetic enhancement from closely spaced Au NPs, chemical enhancement from Fe 2 O 3 , and enrichment by an external magnetic field endow the Au@Fe 2 O 3 composite substrate with outstanding SERS performance. Moreover, the Au@Fe 2 O 3 composite substrates have been successfully used to detect 4-ATP and 4-NTP in water, which has exhibited outstanding detection capability. (LOD 4-ATP = 7.25 × 10 −9 M, LOD 4-NTP = 1.85 × 10 −9 M).
研究领域:
环境科学
·
分析化学
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产品关联
DOI
高影响因子
ACS Sensors
·
2025
·
IF 9.1
Tianjun Hu,Mengtian Kang,Yaru Chen,Yuzhu Tian,Ying Wang,Jiale Li,Junming Zhang,Ergui Luo,Baoliang Lv,Jianfeng Jia
The crystal phase of metal oxide supports critically governs the gas-sensing performance by modulating metal–support interactions. This study reveals a counterintuitive “reversal effect” induced by Pt modification on the acetone-sensing properties of γ-Fe2O3 and α-Fe2O3. Despite pristine α-Fe2O3 exhibiting a 9.4-fold higher response to acetone than γ-Fe2O3 (179 vs 19), even though the latter possesses a 4-fold larger specific surface area, Pt functionalization dramatically reverses this performance hierarchy. After loading 0.3 wt % Pt, Pt–Fe2O3-γ achieves an exceptional response of 1470 to 100 ppm acetone (77-fold enhancement over pristine γ-Fe2O3), whereas Pt–Fe2O3-α suffers a 9.4-fold reduction. Oxygen temperature-programmed desorption (O2-TPD) and structural characterization demonstrate that this reversal stems from the crystal phase-dependent Pt dispersion: γ-Fe2O3 facilitates atomic dispersion of Pt, optimizing gas adsorption and electron transfer, while α-Fe2O3 promotes Pt nanoparticle aggregation, which impedes charge transport despite enhanced oxygen adsorption. This work elucidates a new mechanism wherein the support crystal phase dictates noble metal dispersion states to control sensing behavior, providing a paradigm for designing phase-engineered sensing materials.
研究领域:
材料科学
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气体传感
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纳米材料
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催化
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金属氧化物
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Sujie Shan,Wei Wang,Dongmei Liu,Zhiwei Zhao,Wenxin Shi,Fuyi Cui
Owing to the twin problems of eutrophication and global phosphorus (P) scarcity, the removal and recovery of phosphate from water and wastewater have received increasing attention. Herein, magnetically recyclable La 2 O 2 CO 3 /γ-Fe 2 O 3 adsorbents were rationally designed by derivation from La/Fe binary metal organic framework (MOF) precursors via calcination treatment. Based upon preliminary screening of as-prepared La 2 O 2 CO 3 /γ-Fe 2 O 3 nanocomposites with different La-to-Fe molar ratios in terms of phosphate sorption capacity and magnetic property as well as La content, La 2 O 2 CO 3 /γ-Fe 2 O 3 nanocomposite with a La-to-Fe molar ratio of 2:1 was selected for further characterization and adsorption performance evaluation. Batch adsorption experiments showed that La 2 O 2 CO 3 /γ-Fe 2 O 3 (2:1) adsorbent exhibited a remarkable phosphate sorption capacity of 134.82 mg P/g, a fast sorption kinetic, strong selectivity for phosphate in the presence of co-existing anions, and a wide applicable pH range of 3−9. Furthermore, La 2 O 2 CO 3 /γ-Fe 2 O 3 (2:1) sorbent displayed an excellent sorption performance for low-concentration wastewater, a low dosage of 0.1 g/L was sufficiently enough for reducing P-concentration from 0.5 mg P/L to below 10 μg P/L within 20 min. In a real sewage of 2.68 mg P/L, 0.2 g/L of sorbent could reduce the concentration of phosphate to <0.01 mg P/L within 50 min. Moreover, over 83.1 % of original sorption capacity could be retained after 5 consecutive regeneration cycles, showing great regenerative performance of the adsorbent. These development is expected to be meaningful for practical water purification.
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
Water Cycle
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2023
·
IF 0
Jiaolong Zhang,Shuting Gou,Zhe Yang,Chaolin Li,Wenhui Wang
The application of promising g-C 3 N 4 has been limited by poor photogenerated electron-hole separation and limited absorption for visible light. Sulfamethoxazole (SMX) is a typical antibiotic drug that is used worldwide and hard to be disposed through conventional wastewater treatment methods. Herein, S-scheme Fe 2 O 3 /g-C 3 N 4 heterojunction was successfully prepared via a facile one-step sintering method and applied to photodegrade SMX under visible light irradiation. The integration of Fe 2 O 3 and g-C 3 N 4 shows superior charge separation and light absorption ability. As a result, the removal efficiency of 11 wt% Fe 2 O 3 /g-C 3 N 4 reaches to 99.2% within 30 min, which is visibly higher than 59.5% of pure g-C 3 N 4 . ·O 2 − and ·OH are demonstrated to be the predominant active species for SMX photodegradation, and the possible degradation pathway is also proposed based on electronic band structure of Fe 2 O 3 /g-C 3 N 4 heterojunction. This study presents a facile construction of g-C 3 N 4 based S-scheme photocatalyst and offers an environmentally friendly approach to effectively remove organic pollutants using renewable solar energy.
研究领域:
环境科学
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材料科学
·
化学工程
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DOI
FirePhysChem
·
2024
·
IF 0
Jiashuai Wang,Bo Wu,Lingfeng Yang,Yuan Bian,Renjie Li,Ke Zeng,Juan Zhu,Liangyou Zhao,Jinpeng Shen,Chonghua Pei
Thermites are widely used in propellants, explosives and ignition materials because of their high heat release rate and good combustion efficiency. Structural control over thermites to achieve improved performance leads to a promising research area. Among these, core-shell structured composites have attracted wide attention due to their excellent properties and close contact among components. Herein, core-shell structured α -AlH 3 /Fe 2 O 3 thermites were prepared, which exhibit high heat-release and excellent combustion performance. At an equivalence ratio of 2.0, the core-shell structured α -AlH 3 /Fe 2 O 3 has the most heat release (1213.8 J/g) and the lowest reaction activation energy (147.5 kJ/mol). The ignited combustion performance of α -AlH 3 /Fe 2 O 3 was notably strengthened by the shorter ignition delay period (11 ms). Interestingly, the core-shell structured α -AlH 3 /Fe 2 O 3 was less sensitive to electrostatic discharge, which suggests that the core-shell structured α -AlH 3 /Fe 2 O 3 reaches the goal of high energy release and electrostatic safety. The core-shell thermite system with α -AlH 3 as metal fuel could provide an efficient alternative to hunt for thermites with high reactivity.
研究领域:
材料科学
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化学工程
·
能源技术
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DOI
CERAMICS INTERNATIONAL
·
2016
·Vol. 42
·期 14
·15618-15622
·
IF 2.758
Xue Liu,Songxue Wang,Jing Miao,Yang Liu,Xiao Yan,Shunquan Chen
Fe 2 O 3 powders were introduced as sintering aid to fabricate yttria-stabilized zirconia (YSZ) hollow fiber membranes using a combined wet-spinning and post-sintering method. The obtained Fe 2 O 3 -YSZ hollow fiber membranes show enhanced performance for water treatment with fine crystal structure in terms of bending strength and pure water permeability. Scanning electron microscopy (SEM), X-ray powder diffraction (XRD), and thermogravimetric analysis (TGA) along with mechanical tests were employed to investigate the structural evolution in the sintering process and the effect of Fe 2 O 3 . It is suggested that the Fe 2 O 3 dopants dissolve into YSZ at elevated temperatures, providing defect sites and vacancies for fast ion migration, favoring for densification and grain growth of the YSZ, which yields dense microstructures of fine crystallites at relatively low sintering temperature . The Fe 2 O 3 -YSZ hollow fiber membranes sintered at 1150 °C show a 3-fold increase of the permeate flux of pure water ( F ) (743 L m −2 h −1 ) along with comparable bending strength (152 MPa) compared to pure YSZ membranes. This modified method can reduce sintering costs and therefore fabrication costs which should pave the way for scale-up production for ceramic hollow fiber membranes.
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DOI
高影响因子
APPLIED SURFACE SCIENCE
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2016
·
IF 3.15
Xi-Ming Song,Xin Zhou,Chunxue Yuan,Yu Zhang,Qiang Tong,Ying Li,Luxia Cui,Daliang Liu,Wei Zhang
We reported a novel Fe 2 O 3 /rutile TiO 2 nanorod (NR) arrays with the heterogeneous structure for photoelectrochemical (PEC) cells, which were fabricated on fluorine-doped tin oxide glass (FTO) substrates that serve as model architecture via a hydrothermal method. Fe 2 O 3 was revealed as an inexpensive and eco-friendly semiconductor sensitizer to make TiO 2 respond to visible light . By using this photoanode, the photoelectric conversion and water splitting properties of PEC cells based on the one-dimensional (1D) Fe 2 O 3 /TiO 2 heterostructures were investigated in detail under simulated sunlight. Meanwhile, the optimization of photovoltaic performance was also achieved by regulating the amount of Fe 2 O 3 . The open circuit voltage and short circuit current of the Fe 2 O 3 /TiO 2 solar cell can reach 0.435 V and 1.840 mA/cm 2 , respectively. In addition, theoretical analysis of the photoelectric effect is preliminarily explored on the basis of the flat band potential results.
研究领域:
材料科学
·
物理化学
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能源科学
·
纳米科技
·
光催化
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DOI
高影响因子
危险品化学品经营许可证（带存储）