Journal of Inorganic and Organometallic Polymers and Materials
·
2012
·Vol. 23
·期 2
·393-400
·
IF 1.452
Jiang Hualin,Chen Pinghua,Luo Shenglian,Luo Xubiao,Tu Xinman,Cao Qun,Zhou Yanlei,Zhang Weibo
A novel biocompatible composite Fe 3 O 4 /ZrO 2 /chitosan was synthesized in a simple way and its capacity of dye removal was investigated in this study. The morphology of the material was examined by SEM and TEM and found to be nanosized and spheroidal. Equilibrium adsorption isotherms and dynamic behaviors of the adsorption process were investigated in detail. The material saturated with dye could be regenerated by treatment with strong alkali solution. The composite has high adsorption capacity towards acidic dyes represented by amaranth and tartrazine, and remains intact under conditions that are strongly acidic or alkali. The material has high potential to be applied for the removal of acidic dyes in industrial wastewater in large scale.
研究领域:
材料科学
·
环境科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2021
·
IF 3.498
Can Tao,Fang Zhao,Zi-Wei Tang,Luxi Zhang,Qiang Niu,Gao Cao,Li-Min Zhao,Wenhuan Huang,Ping Zhao
Magnetic mesoporous ZrO 2 (Fe 3 O 4 @ZrO 2 , MMZr) nanoparticles blocked by bismuth oxide (Bi 2 O 3 ) are presented and efficiently deliver chemotherapeutic agent daunomycin (DNM) to the targeted tumor cells. Bi 2 O 3 not only rapidly dissolves in the acidic condition of cancer cells to release the loaded chemotherapeutic drug but also enhances the anti-cancer effect through synergistic effects of the chemotherapy and Bi 3+ ions. By monitoring the treatment process, compared with the free drug DNM, the drug loaded DDS exhibit more significant suppression against cancerous cells growth such as A549 and MCF-7 cancer cells and lower cytotoxicity against normal Hacat cells. Mechanism research indicates that the drug loaded DDS can arrest the cell cycle at G0/G1 phase, change the mitochondrial membrane potential and finally induced the apoptosis of the cancerous cells. These results indicate that the Bi 2 O 3 -gated ZrO 2 platform is a promising approach to serve as a pH-sensitive DDS in the treatment of various cancers by chemo/ionic synergistic effects.
研究领域:
纳米技术
·
癌症治疗
·
药物递送系统
·
材料科学
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Xin-Yue Wang,Jie Yang,Ling Zhou,Gao Song,Fan Lu,Li-Jun You,Ju-Mei Li
It is greatly significant to sense hexavalent chromium (Cr (VI)) in water because Cr (VI) is one of the most toxic heavy metals and is extremely harmful for human health and environment. In this study, we explored sensitive surface-enhanced Raman scattering (SERS) substrates for rapid detection of Cr (VI) using magnetic Fe 3 O 4 /ZrO 2 /Ag composite microspheres. We firstly coated uniform zirconium dioxide layer around Fe 3 O 4 cores to achieve Fe 3 O 4 /ZrO 2 microspheres and then deposited silver nanoparticles onto their surface via controlled reduction of AgNO 3 by n-butylamine. The SERS sensitivity of Fe 3 O 4 /ZrO 2 /Ag composite microspheres were easily tailored via facilely changing the concentration of AgNO 3 to tune the coverage of silver nanoparticles on the Fe 3 O 4 /ZrO 2 /Ag. We used 4-mercaptobenzoic acid (4-MBA) as a Raman molecule to evaluate the SERS activity of Fe 3 O 4 /ZrO 2 /Ag. They illustrated excellent SERS property as well as magnetic responsibility. The optimized Fe 3 O 4 /ZrO 2 /Ag were employed to quantitatively detect Cr (VI) in aqueous solution. The results showed good linear relationship between SERS intensities and logarithm concentrations of Cr (VI) (R 2 = 0.98) with a detection limit of low down to 10 −7 M, which is much lower than the safety value (1 μM) in drinking water of United States Environmental Protection Agency. Moreover, the highly uniform and robust Fe 3 O 4 /ZrO 2 /Ag composite microspheres display outstanding signal reproducibility (RSD = 8.34 %) and good storage stability. These results indicate that the prepared Fe 3 O 4 /ZrO 2 /Ag composite microspheres have promising application prospect for SERS analysis of environmental pollutants.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2013
·
IF 2.112
Hualin Jiang,Pinghua Chen,Shenglian Luo,Xinman Tu,Qun Cao,Meng Shu
A novel nanocomposite with a BET surface area of 212.9 m 2 /g was synthesized from chitosan and Fe 3 O 4 /ZrO 2 using an inexpensive protocol at mild condition. The Fe 3 O 4 /ZrO 2 /chitosan composite has the ability to adsorb both nitrate and phosphate. The maximum adsorption amount of nitrate and phosphate is 89.3 mg/g and 26.5 mg P/g, respectively. The adsorption process fits well to the pseudo-first-order kinetic rate model, and the mechanism involves simultaneous adsorption and intra-particle diffusion. The experimental results suggest that the composite is a promising adsorbent for treating water that is contaminated with nutrients.
研究领域:
环境科学
·
材料科学
·
水处理
·
纳米技术
·
环境污染控制
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2019
·
IF 3.073
Wenkan Fang,Zhe Wang,Qiang Xie,Yan Liu,Deyi Wu
In developing a magnetic material for the recovery of phosphate from water/wastewater, both high magnetization and high uptake ability for phosphate are highly desirable. In our quest to obtain such a magnetic material, hydrous zirconia-coated magnetite nanocomposite (Fe 3 O 4 @ZrO 2 ) has been synthesized at different end-point pH values and stirring rates. The results indicated that the saturation magnetization of Fe 3 O 4 @ZrO 2 increased almost linearly with increasing end-point pH, and high stirring rate caused low magnetization. The magnetization behavior was closely related to the formation of the mineral magnetite, which was hindered at either low end-point pH or fast stirring rate. In contrast to magnetization, phosphate adsorption capacity decreased with increasing end-point pH, whereas the stirring rate had little effect. It is concluded that adopting a relatively low end-point pH and a low stirring rate is a good strategy for obtaining a Fe 3 O 4 @ZrO 2 material with good magnetic separability and a high affinity for P.
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
危险品化学品经营许可证（带存储）