RSC Advances
·
2016
·Vol. 6
·期 74
·70547-70552
·
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
·
环境科学
·
光化学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF FOOD MICROBIOLOGY
·
2021
·
IF 5.277
Di Sun,Jin Mao,Zhijian Wang,Hui Li,Liangxiao Zhang,Wen Zhang,Qi Zhang,Peiwu Li
Peanut is an important resource of edible oil and digestible protein in daily life, which is rich in the nutriments and antioxidants such as vitamins, minerals and polyphenols. However, peanut is susceptible to the contamination of Aspergillus flavus ( A. flavus ), which can produce highly carcinogenic toxins that brings serious threats to human health and food safety. Exploring green and effective methods to control A. flavus is meaningful. Herein, a green and economical way to control A. flavus on peanuts was demonstrated. It was found that the growth of A. flavus hyphae and germination of its spores could be inhibited in the presence of α-Fe 2 O 3 nanorods under sunlight irradiation according to the agar diffusion method , flat colony counting method and fluorescence-based live/dead test. The diameter of inhibition zone was 22.3 ± 0.2 mm and the inhibition rate of spores germination was about 60 ± 5%, when the concentration of α-Fe 2 O 3 was 10 mg/mL for 7 h sunlight irradiation. Most important, α-Fe 2 O 3 showed the photocatalytic inhibition of A. flavus on peanuts under sunlight irradiation with the inhibition rate of about 90 ± 5%, and the production of aflatoxin B 1 and aflatoxin B 2 were reduced by 90 ± 2% and 70 ± 3%, respectively. By comparing the fat contents, protein contents, acid value, peroxide value and antioxidative compositions of peanuts, it was found that there was no obvious effect on the quality of peanuts after inhibition treatment. The findings provide a green, safe and economical strategy to control A. flavus on peanuts, which may be as a promising way to be used in food and agro-food preservation.
研究领域:
食品科学
·
微生物学
✓ 已验证
DOI
PubMed
高影响因子
ChemCatChem
·
2018
·Vol. 10
·期 20
·4530-4535
·
IF 4.674
Xiaojiao Xiang,Zao Wang,Xifeng Shi,Meikun Fan,Xuping Sun
Graphical Iron rods : here, Fe 2 O 3 nanorods are reported as an efficient non-noble-metal electrocatalyst for the nitrogen reduction reaction under ambient conditions. The nanorods efficiently catalyze N 2 to NH 3 in 0.1 M Na 2 SO 4 , achieving a Faradaic efficiency of 0.94 % with a NH 3 yield of 15.9 μg h −1 mg −1 cat. at a potential of −0.8 V vs. reversible hydrogen electrode. The conventional Haber-Bosch process for industrial ammonia production from N 2 and H 2 is not only energy-intensive but also releases a large amount of CO 2 . The electrocatalytic nitrogen reduction reaction (NRR) is regarded as a sustainable and environmentally-benign alternative approach for NH 3 production under ambient conditions. In this communication, it is reported that Fe 2 O 3 nanorods act as an efficient electrocatalyst for the NRR. In 0.1 M Na 2 SO 4 , it attains a Faradic efficiency of 0.94 % and NH 3 yield of 15.9 μg h −1 mg −1 cat. at −0.8 V vs. reversible hydrogen electrode. Furthermore, this catalyst also shows good stability during electrolysis and recycling tests.
研究领域:
化学
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 12
·5319-5333
·
IF 4.5
Wang Yun,Tan Hongjie,Sang Lexian,Xie Yunying,Jia Fuchao,Zhou Tong,Yin Guangchao,Sun Fazhe,Wang Xiaomei
An optimized acetone gas sensor based on Ti 3 C 2 / α -Fe 2 O 3 (TF) composite materials was synthesized using microwave and etching methods. The structures, morphology and composition of the TF composites were characterized via XRD, XPS, SEM and TEM. The crystal of α -Fe 2 O 3 porous nanorods is hexagonal, and the α -Fe 2 O 3 nanoclusters formed from α -Fe 2 O 3 nanorods were adhered adequately on the lamellar Ti 3 C 2 MXene in the TF composite. The specific surface area and surface defects of the TF composites increased compared with pure α -Fe 2 O 3 nanocluster material, thus exposing a large number of gas adsorption sites. Furthermore, the excellent electrical conductivity and high free charges transfer ability of Ti 3 C 2 MXene provided more electrons for the gas-sensitive reaction and enhanced the transmission capacity of gas-sensitive reaction electrical signal, respectively. The Schottky barriers were formed at the interface of α -Fe 2 O 3 and Ti 3 C 2 MXene increasing the resistance of TF gas sensor in air, which is beneficial to the response of TF gas sensor. So, the gas-sensitive performance of TF gas sensor to acetone was greatly improved. The response of TF gas sensor to 100 ppm acetone was up to 23.38, which was nearly 2.3 times higher than pure α -Fe 2 O 3 gas sensor. The lower detection limit of TF gas sensor could be as low as 1 ppm. In addition, the TF gas sensor had excellent selectivity, long-term repeatability and stability for acetone.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2020
·
IF 0
Liujun Song,Jin Hu,Xiaofeng Huang,Li Zhong,Yongbing Pei,Lianbin Wu,Xinya Zhang
Inspired by the compound eye superhydrophobic phenomenon, the hemispherical particles with a concave (HPCs) were prepared and self-assembled into a similar array structure. To improve the roughness and mechanical durability properties, the nanoscale Fe2O3 nanorods modified by 1H,1H,2H,2H-perfluorodecyltriethoxysilane (FSA) were coated on the particles (HPC@Fe2O3) and then the SiO2 particles modified by FSA were deposited onto HPC@Fe2O3 arrays to mimic the nanoscale nipples of a compound eye. The obtained arrays show excellent superhydrophobic properties (the contact angle is 175°, and the sliding angle is 3.5°), which are mainly attributed to the stable micro/nanoscale air-cushion structure’s greatly reduced contact of water drops. After that, the self-healable poly(dimethylsiloxane) (NH2-PDMS) elastomer was introduced as a substrate, and the composite structure can be self-healed in 2 min at room temperature after being damaged, which greatly enhances the lifespan of the superhydrophobic film. This kind of biomimicry material combining the superhydrophobic with the self-healable property has promising applications in artificial skins, wearable devices, and so on.
研究领域:
材料科学
·
仿生学
✓ 已验证
产品关联
DOI
RSC Advances
·
2015
·Vol. 5
·期 111
·91574-91580
·
IF 3.84
Xiaoliang Wang,Jawayria Mujtaba,Fang Fang,Mashkoor Ahmad,Hamidreza Arandiyan,Hongping Yang,Guoxing Sun,Hongyu Sun
Unique 1D aligned γ-Fe2O3 nanorods anchored on 2D reduced graphene oxide nanosheets were successfully synthesized by a facile seed-assisted solution reaction and subsequent thermal decomposition method. The structural and compositional analyses by employing X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) show that each γ-Fe2O3 nanorod possesses internal void spaces. The special structural nature of the γ-Fe2O3 nanorods together with the hierarchical nanoarchitectures is responsible for a large specific surface area of ∼193.6 m2 g−1. When evaluated as an anode material for LIBs, the as-prepared composite electrodes delivered superior capacity, better cycling stability and rate capability. The excellent lithium storage properties are attributed to the advantageous structural features.
研究领域:
材料科学
·
能源存储
✓ 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）