APPLIED CLAY SCIENCE
·
2019
·
IF 3.89
Hui-Ran Jin,Xin-Yu Zhou,Yong Zhu,Guo-Fan Sun,Shi-Jie Ding,Jing Chen
In this paper, non-aqueous Fe(OH) 3 /palygorskite dispersion was prepared and its liquid crystal phase behavior was investigated. Positively charged Fe(OH) 3 colloidal particles were put in to non-aqueous and organically modified palygorskite dispersion. The effects of organically treated palygorskite and Fe(OH) 3 on the preparation of stable palygorskite dispersion were characterized with FT-IR, XRD , Contact Angle measurement , Zeta potential detection, Settlement measurement and SEM , respectively. The addition of Fe(OH) 3 particles shifted the concentrations of the coexisting isotropic and nematic phases to higher values while at the same time markedly accelerated the phase separation. The influence of Fe(OH) 3 particles on the dispersion in magnetic field was also discussed.
研究领域:
材料科学
·
胶体化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2022
·
IF 4.119
Jingjing Sun,Shangqing Chen,Junfeng Wang,Yi Nie
The reduce of the silicon concentration to low level (<5 mg·L −1 ) from the reverse osmosis brine wastewater is challenging and desirable for the maintain the membrane life and performance, as well as the wastewater treatment costs. This work focuses on the removal of silicon from the reverse osmosis brine wastewater by adding FeCl 3 into the plant wastewater for simultaneous Fe(OH) 3 formation and silicon adsorption. The effects of pH, FeCl 3 dosing concentration, reaction time, and temperature on the silicon removal ratio were investigated. It was demonstrated that the silicon removal ratio could reach up to 94% and its residual concentration was 3.2 mg·L −1 , which met the require of water quality in the reverse osmosis system. These results showed that Fe(OH) 3 could effectively be formed by adding FeCl 3 and realize the efficient silicon removal from the reverse osmosis brine wastewater, even when chloride ion (Cl - ), sulfate anion ( S O 4 2 - ) and nitrate ion ( N O 3 - ) were present. Moreover, the adsorption thermodynamics, kinetics and isotherms during the process of the adsorption of silicon from the wastewater by Fe(OH) 3 were studied. The calculated adsorption capacity of silicon could reach 612.74 mg·g −1 , which was much larger than those of reported adsorbents. These results showed that the silicon removal process was spontaneously exothermic and mainly controlled by the physical adsorption and the monomolecular layer adsorption. This simple and cost-effective method could be used for the silicon removal from different kinds of Si-containing wastewater.
研究领域:
环境科学
·
废水处理
✓ 已验证
DOI
高影响因子
ChemSusChem
·
2021
·Vol. 14
·期 16
·3382-3390
·
IF 8.928
Ting Feng,Jing Ding,Haiyan Li,Wei Wang,Bohua Dong,Lixin Cao
Graphical In hot water : CeO 2 /A−Fe(OH) 3 composites synthesized by a secondary water bath at 100 °C exhibit superior photocatalytic activity. A−Fe(OH) 3 increases specific surface area, passivates the surface of CeO 2 , and reduces the activation energy of water oxidation. This work provides a new insight into exploring amorphous cocatalysts to enhance photocatalytic O 2 evolution activity and augment the possibility of overall water splitting based on CeO 2 . Noble-metal-free composites with good photocatalytic property are of great interest. Here, CeO 2 nanorods composites loaded with amorphous Fe(OH) 3 cocatalyst were designed and prepared via a secondary water bath at 100 °C. The as-synthesized CeO 2 /amorphous Fe(OH) 3 composites exhibited superior light photocatalytic activities compared to pure CeO 2 , especially the sample with a loading time of 60 min. The photocatalytic oxygen generation rate could reach to 357.2 μmol h −1 g −1 , and the average apparent quantum yield (AQY) was 24.67 %, which was a 5.5-fold increase compared to the CeO 2 sample. The improvement of photocatalytic performance could be ascribed to three main reasons: First, loading the amorphous Fe(OH) 3 enlarged the specific surface area and passivated the surface of the pristine CeO 2 . Second, the amorphous Fe(OH) 3 ,which acted as a cocatalyst, provided many active sites, and reduced the reaction activation energy. Thirdly, the maximum interface with intimate contact between CeO 2 and amorphous Fe(OH) 3 cocatalyst accelerated the photogenerated charge separation efficiency and thus improved the photocatalytic performance of CeO 2 in photocatalytic water oxidation.
研究领域:
材料科学
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环境科学
·
化学
✓ 已验证
DOI
PubMed
高影响因子
NANOTECHNOLOGY
·
2024
·Vol. 35
·期 50
·505502
·
IF 2.9
Zhihua Zhao,Hepeng Zhang,Pu Chen,Guixin Jin,Lan Wu
Two-dimensional material (2D material) MXene has great application potential in gas sensors because of its excellent controllable performance and vast specific surface area. In this study, we used a straightforward in-situ electrostatic self-assembly technique to create Fe(OH)3/Ti3C2Tx nanocomposites, which were then used to fabricate gas sensors for ammonia detection at room temperature (25 °C). Several characterization methods were performed aimed at determining the surface appearance and construction of the nanocomposites, and the sensing characteristics and mechanism were also systematically examined. The findings demonstrate the effective incorporation of amorphous Fe(OH)3 nanoparticles on the surface of Ti3C2Tx. Additionally the nanocomposites of Fe(OH)3/Ti3C2Tx have considerably higher specific surface area than pure Ti3C2Tx, hence offering more active NH3 adsorption sites. The response of the sensor to 100 ppm NH3 was 48.6% at room temperature, which was 9.3 times more higher than that of pure Ti3C2Tx. The sensors also have the advantages of long-term stability (33 d), low NH3 detection limit (500 ppb), and rapid recovery time (85 s) and response times (78 s). It is anticipated that this work will be helpful for developing the new generation of wearable ammonia sensors at room temperature.
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Sciences
·
2018
·
IF 3.12
Xiaole Zhao,Yingchun Su,Shubin Li,Yajun Bi,Xiaojun Han
Dyestuffs and heavy metal ions in water are seriously harmful to the ecological environment and human health. Three-dimensional (3D) flowerlike Fe(OH) 3 microspheres were synthesized through a green yet low-cost injection method, for the removal of organic dyes and heavy metal ions. The Fe(OH) 3 microspheres were characterized by thermal gravimetric analysis (TGA), Fourier transform infrared (FT-IR), and transmission electron microscopy (TEM) techniques. The adsorption kinetics of Congo Red (CR) on Fe(OH) 3 microspheres obeyed the pseudo-second-order model. Cr 6 + and Pb 2 + adsorption behaviors on Fe(OH) 3 microspheres followed the Langmuir isotherm model. The maximum adsorption capacities of the synthesized Fe(OH) 3 were 308, 52.94, and 75.64 mg/g for CR, Cr 6 + , and Pb 2 + respectively. The enhanced adsorption performance originated from its surface properties and large specific surface area of 250 m 2 /g. The microspheres also have excellent adsorption stability and recyclability . Another merit of the Fe(OH) 3 material is that it also acts as a Fenton-like catalyst. These twin functionalities (both as adsorbent and Fenton-like catalyst) give the synthesized Fe(OH) 3 microspheres great potential in the field of water treatment .
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Zewen Xu,Zhongyi Ren,Haojiang Zhu,Hao Guo,Xinliang Liu,Ming Wang,Yingfei Hou
Layer-by-layer (LBL) assembly method, with the advantages of simple operation and strong universality, has attracted much attention recently. However, the weak molecule-to-molecule and molecule-to-ion interactions have limited its development. During this work, the molecule-to-solid interaction was adopted and a robust LBL coating was achieved by alternately depositing positively charged Fe(OH) 3 colloids and negatively charged sodium alginate molecules. The molecule-to-solid interaction could continuously regenerate under corrosive conditions due to water insolubility and the chemical stability of solids. When the electrostatic interaction was broken, the abundant chemically stable solids acted as anchors to immobilize the soluble molecules and maintain the stability of the LBL coating. The prepared superwettable membranes exhibited superior oil-in-water emulsion separation efficiency, anti-fouling properties, and chemical stability. Meanwhile, the separation performance survived one week's harsh environments of strong acid and alkali.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2021
·Vol. 11
·期 43
·26502-26508
·
IF 3.361
Meirong Fu,Mingqiang Li,Yingying Zhao,Yunxiang Bai,Xingzhong Fang,Xiaolong Kang,Min Yang,Yanping Wei,Xia Xu
Precious metal nanometric catalysts are widely used in the removal of harmful substances. In the process of synthesis and catalytic reaction, it is particularly important to study green and simple synthesis methods and high catalytic efficiency. In this paper, a green one-step method was used to synthesize the Fe(OH)3/Fe2O3@Au composite catalyst, in which Au was single atom-dispersed. The removal of 4-nitrophenol (4-NP), a typical dangerous chemical widely existing in factory waste gas, waste water and automobile exhaust gas, was catalysed by Fe(OH)3/Fe2O3@Au. The catalytic performance of Fe(OH)3/Fe2O3@Au with different synthesis conditions (different amounts of MES, NaBH4, FeSO4, Au and Pt) on the 4-NP reduction reaction were systematically studied. Finally, the stability and recyclability of Fe(OH)3/Fe2O3@Au composite nanocatalyst were investigated thoroughly.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Cleaner Production
·
2023
·
IF 11.1
Dong Wang,Yumeng Wang,Luheng Jing,Lei Wang,Tonghui Zhang,Xuefen Wang
In this work, a flower-like Fe(OH) 3 @Co 2 (OH) 2 CO 3 catalyst was prepared via the confinement effects provided by L-phenylalanine, which favored the heterostructure construction of active iron centers (Fe(OH) 3 ) anchored on the Co 2 (OH) 2 CO 3 nanosheet supports. Benefiting from the created electron-transfer interface and dual metal active sites, the limitation of redox cycling was broken and exhibited highly efficient catalytic activities , the optimal Fe(OH) 3 @Co 2 (OH) 2 CO 3 catalyst showed comparable catalytic performance for the degradation of dye (degradation degree of 99% methylene blue and orange II within 18 min). In addition, the prepared catalysts were employed for the efficient removal of antibiotics (tetracycline (98.9%), norfloxacin (92.5%) and doxycycline hyclate (90.2%). Besides, the preferred nanofibrous composite membranes prepared by combination of nanofibrous membranes (NFMs) with Fe(OH) 3 @Co 2 (OH) 2 CO 3 catalysts possessed considerable potential for large-scale MB removal (treatment capacity of 238.5 L m −2 and permeability of 191.8 L m −2 h − 1 driven by gravity) and stability (182.7 L m −2 of treatment capacity was achieved in the third run). The strategy of construction of rapid interface-redox on the heterogenous catalysts was designed to enhance catalytic performance, which provided a promising chance for the efficiently large-scale removal of dyes and antibiotics.
研究领域:
材料科学
·
环境科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2018
·Vol. 6
·期 18
·2831-2842
·
IF 4.776
Fen Zhang,Qingtao Li,Zefeng Lin,Limin Ma,Sheng Xu,Qi Feng,Hua Dong,Yu Zhang,Xiaodong Cao
Stem cells are an alternative solution for repairing bone defects. Cell migration and homing from the edge of the defect is important for new bone formation. However, the hostile ischemic environment results in limited migration, homing and survival of stem cells. In this article, ferric hydroxide (Fe(OH)3) nanoparticle-coated poly(lactic-co-glycolic acid) microspheres (FePLGA) were designed via a Pickering emulsion to facilitate stem cell homing. In the process, Fe(OH)3 nanoparticles were immobilized uniformly on the surface of FePLGA microspheres. The morphology, element analysis and Fe content of the FePLGA microspheres were characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and inductively coupled plasma atomic emission spectroscopy (ICP-AES). Then, these microspheres were sintered to form porous microsphere scaffolds. Recombinant human bone morphogenetic protein-2 (rhBMP-2) was immobilized on the scaffolds via a polydopamine coating to induce osteogenic differentiation. The cell viability, adhesion and migration of mouse bone marrow stromal cells (mBMSCs) cultured on different scaffolds were tested. The results indicated that the mBMSC culture on scaffolds containing Fe(OH)3 nanoparticles exhibited better proliferation, osteoblastic differentiation and migration. Moreover, the iron-containing, rhBMP-2-releasing scaffolds could enhance cell homing efficiency and promote bone formation and osteoconduction when implanted into critical size bone defect models of rabbit femur. Therefore, this new porous PLGA scaffold modified with iron and rhBMP-2 promotes bone repair by recruiting stem cells to the defect site and inside of scaffolds.
研究领域:
材料科学
·
组织工程
·
生物材料
·
再生医学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Hongshuai Zhu,Yue Cai,Aori Qileng,Zhu Quan,Wei Zeng,Kaiyu He,Yingju Liu
The convenient and effective detection of toxins is urgently demanded for food security and human health. Herein, based on the catalytic activity of mimetic peroxidase from the Cu 2 [email protected] (OH) 3 yolk-shell nanocages, a dual-modal multi-colorimetric and ratiometric fluorescence immunosensor for the sensitive detection of ochratoxin A (OTA) was successfully developed. For the multi-colorimetric detection, H 2 O 2 can be effectively decomposed by Cu 2 [email protected] (OH) 3 to form ·OH groups, thus Au nanorods (Au NRs) can be etched to exhibit vivid color variations and localized surface plasmon resonance (LSPR) shifts. For the ratiometric fluorescence detection, o -phenylenediamine was oxidized by Cu 2 [email protected] (OH) 3 to form 2,3-diaminophenazine (DAP) in the presence of H 2 O 2 . Interestingly, the exogenous fluorescence signal source of carbon dots can be quenched by DAP via inner filter effect, while a new emission peak at 563 nm can be discovered, forming a ratiometric fluorescence signal. Due to the independent signals and mutual confirmation, the performance of the dual-modal immunosensor for the detection of OTA was significantly improved, where a broad linear range from 1 ng/L to 10 μg/L with a detection limit of 0.56 ng/L (S/N = 3) was achieved. The sensing strategy was also used to monitor OTA in millet and lake water samples with a satisfied performance.
研究领域:
分析化学
·
纳米技术
·
食品安全
·
毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PETROLEUM SCIENCE AND TECHNOLOGY
·
2019
·
IF 1.07
Wei Chang,Doudou Zhao,Jun Lian,Sheng Han,Yuan Xue
Waste rolling oil (WRO) can be regenerated by inorganic flocculation-adsorption. Ferric hydroxide (Fe(OH)3) colloid prepared by the double decomposition reaction of FeCl3 and NaOH was selected as an inorganic flocculant. Fly ash, activated carbon, clay and silica gel were used as adsorbents to treat the WRO. Effects of different treatment conditions on the performance of the recycled oil were investigated. Results indicated that the recycled oil achieved optimum quality under the following conditions: flocculation time, 6 min; temperature, 60 °C; adsorption time, 20 min; and mass ratios of FeCl3-to-WRO, NaOH-to-FeCl3 and fly ash-to-WRO of 0.10, 3 and 0.03, respectively. NaOH combined with Fe(OH)3 effectively removed most macromolecular impurities, organic acids, lipids, and alcohols. Fly ash exerted the best adsorption rate and adsorption effect. In addition, physicochemical properties of the recycled oils were close to those of fresh oil.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Yun-Han Ren,Wen-Hai Zhang,Ming-Jie Yin,Zhi-Jie Liu,Quan-Fu An
Graphene oxide (GO) membrane has been considered as a promising approach for harvesting pure water from various wastewater to deal with the current water shortage issue, arising from its distinctive 2D channel features. However, the narrow interlayer distance (0.75 Å) of GO nanosheets hampers the utilization of GO membranes for dye wastewater treatment, which demands superior water permeance, high dyes rejection, and low salts rejection. Herein, an in-situ anchored nanoparticle strategy is designed to fabricate Fe(OH) 3 @GO membrane to enlarge the interlayer distance via the uniform distributed Fe(OH) 3 nanoparticles. Benefiting from the in-situ transformation of Fe 3+ into positively charged Fe(OH) 3 nanoparticles, the interlayer distance of GO membranes can be tailored via changing the Fe: GO mass ratio and hydrolysis time. The optimized Fe(OH) 3 @GO membrane realizes a superior water permeance of ∼90.9 LMH/bar (∼19-fold enhancement compared with GO membranes), with >99% and <4% rejection to Evans blue (EB) and NaCl, respectively. Thus, the membrane can be applied for dye desalination and can be stably running for 85 h. Considering the facile and efficient 2D channel tunability, our strategy provides an innovative approach for construction of high-performance 2D membranes.
研究领域:
材料科学
·
环境科学
✓ 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）