JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Ningyi Chen,Chenhao Ni,Shuang Wu,Du Chen,Bingjun Pan
Phosphorus (P) control has been recognized as an imperative task to mitigate water eutrophication and settle the imminent shortage of P resources. Despite intensive effort put into this matter, it is still generally challenging for the current methods to remove and even potentially recover phosphorus (as phosphate) from complicated water matrices. To this end, we proposed a novel nanocomposite via coupling polystyrene anion exchanger (PsAX) with hydrated neodymium oxide (HNdO) nanoparticle for selective removal of phosphate. The developed nanocomposite, i.e., HNdO-PsAX, exhibited quite stable and efficient phosphate adsorption over a wide pH range of 3.0–10.0 with the maximum adsorption capacity as 85.4 mg P/g. It also showed satisfied anti-interference against various competing substances; notably, HNdO-PsAX obviously outperformed Phoslock, a commercial lanthanum-based adsorbent exclusively for phosphate sequestration, particularly under the interference of bicarbonate and humic acid, which were admitted as the paralyzing factors for Phoslock. The superior affinity of HNdO-PsAX towards phosphate, driven by the specific Nd-P inner-sphere complexation as evidenced by XPS , FT-IR, and the lattice evolution of HNdO nanoparticle, renders the nanocomposite eminently suitable for sequestrating trace phosphate. Fixed-bed treatment validated that HNdO-PsAX was capable of treating ∼11,800 bed volume of a simulated wastewater (from 2.0 to below 0.5 mg P/L), approximately 12 times higher than that of the previously reported Fe-based nanocomposite (HFO-PsAX, ∼ 900 BV); also, a satisfactory outcome in treating authentic municipal wastewater by HNdO-PsAX and the feasibility of regenerating the exhausted one by a binary NaOH-NaCl solution were recognized. This work provides a new potion of enhanced phosphorous control for surface water and wastewater.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2017
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IF 3.012
Xueliang Li,Luyao Zhang,Zhongqiang Ding,Yang He
The carbon aerogel (CA) uniformly doped neodymium oxide (Nd 2 O 3 ) nanoparticle was synthesized by an effective in-situ method via acid catalyzing and used as the cathode matrix for lithium-sulfur batteries . The doped materials with interconnected pore structure of CA and evenly dispersed Nd 2 O 3 offer crucial confinement role to anchor sulfur and suppress the loss of polysulfide ions for interrelate function of S/polysulfides by Nd 2 O 3 . The composited sulfur electrodes present high electrochemical performances and initial discharge capacities, especially, the Nd2-CA/S sample gains initial discharge capacity of 1327 mAh g − 1 at 0.2 C and remains at 1082 mAh g − 1 after 100 cycles. Meanwhile, it still remains capacity of about 907 mAh g − 1 at 0.5 C after 300 cycles. The enhanced electrochemical performances can be ascribed to the crosslink mesoporous CA materials and well distributed neodymium oxide. Furthermore, the metal additive also takes promoting effect on redox reactions of the Li/S batteries presenting higher discharge voltages.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2017
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IF 3.387
Liupeng Pan,Shunli Liu,Olayinka Oderinde,Kewen Li,Fang Yao,Guodong Fu
We report a one-step facile fabrication of macroscopic multifunctional graphene-based aerogel with three-dimensional interconnected networks under the synergistic effects of the reduction of graphene oxide sheets by L-ascorbic acid and in situ simultaneous deposition of nanoparticles on graphene sheets. The functional components, Nd 2 O 3 nanoparticles, can be easily incorporated with graphene sheets to assemble bulk macroscopic graphene materials under mild conditions. The reduced graphene oxide/neodymium oxide (rGO/Nd 2 O 3 ) aerogel showed remarkable adsorption capacity towards different types of dyes, especially for anionic dyes, with the adsorption capacity for indigo disulphonate (ID) being more than 220 mg g −1 within one hour while the adsorption capacity at equilibrium is as high as 397 mg g −1 . The method proposed is proven to be universal to induce macroscopic assembly of reduced graphene sheets with rare earth metal oxides and thus facilitates to accessing various graphene-based multifunctional nanocomposites in the form of macroscopic aerogels .
研究领域:
材料科学
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环境科学
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纳米技术
✓ 已验证
DOI
高影响因子
APPLIED RADIATION AND ISOTOPES
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2023
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IF 1.6
Pan Tan,Fen Luo,Guilin Wei,Lijing Huang,Du Liu,Xiaoan Li,Xirui Lu
The evaluation of radiation resistance of the treated radioactive contaminated soil is crucial. The irradiation behavior of simulated radioactive soil waste irradiated with 1.5 MeV Xe 20+ ions at fluences of 1 × 10 12 -1 × 10 15 ions/cm 2 was studied. Before the irradiation experiment, all the samples were sintered by microwave. The results showed that microwave sintering may be used to treat radioactive contaminated soil. In addition, the irradiation experiment results show that when the Nd 2 O 3 content was low (<20 wt. %), the irradiation has little effect on the sample. When the Nd 2 O 3 content was higher, the Vickers hardness of the sample (25 wt. %) decreased by 7 % at a fluence of 1 × 10 15 ions/cm 2 , which may be due to the high Nd 2 O 3 content that destroyed the overall stability of the glass waste form. The low normalized leaching rate of the irradiated sample (LR Nd , ∼10 -6 g·m -2 ·d -1 ) also proved that it had good aqueous durability. Moreover, the radiation resistance of the sample was illustrated by studying the influence mechanism of 1.5 MeV Xe 20+ irradiation on radioactive contaminated soil. This work can help to study the environmental pollution problems of radioactive contaminated soil containing various contents of actinide nuclear waste .
研究领域:
核废料处理
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材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）