COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Jing Zhang,Yi Shen,Chenge Liang,Huiyu Yi,Jining Liu,Yungui Li,Qingqing Li,Qile Fang
In response to phosphorus pollution, developing functional materials for phosphate adsorption is an ideal method to reach an ultralow phosphate concentration in effluent. Herein, a hexagon flower-shaped architecture constructed of Fe-composited lanthanum (La)-based hydroxide nanosheets was fabricated from LaFe cyano-bridged metal frameworks (CMs) via a self-templating strategy using NH 3 ‧H 2 O as the conversion reagent. The ion exchange process using weak alkaline reagent enables the formation of secondary nanosheets on the architecture, thus leading to a high surface area and a large number of mesopores that provide abundant active sites and mass transfer channels for phosphate adsorption. A superior adsorption capacity of 127.5 mg P/g can be obtained on the La/Fe-based architecture, which also shows satisfactory applicability over a wide pH range. A ligand exchange between -OH and phosphate ions is verified as the main adsorption mechanism, which properly accounts for its excellent selectivity for phosphate adsorption when coexisting with other anions/cations and natural organic matters . Overall, the present study provides a new method for constructing porous La-based hydroxide materials for phosphorus control in water.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Zheng Guo,Han-Yi Zheng,Zhong-Ying Huang,Yue-Zhen Liu,Yao-Hua Liu,Yun Chen,Jing Gao,Yong Hu,Chao Huang
A ternary deep eutectic solvent (DES) consisting of choline chloride, lactic acid, and urea in a molar ratio of 1:2:2 was used to pretreat chamomile residue, followed by carbon dots (CDs) preparation using a one-pot solvothermal method . The CDs prepared under the suitable conditions had a high quantum yield of 47.34% and could be used as a bifunctional fluorescent probe for the detection of tartrazine and Fe(III). The concentration of tartrazine or Fe(III) had a good linear relationship with the fluorescence intensity of CDs that the determination coefficient ( R 2 ) was 0.9957 and 0.9943, and the limit of detection (LOD) was 40 nM and 119 nM, respectively. After verifying the different fluorescence quenching mechanisms of CDs by these two substances, a quantitative analysis was performed on real samples with recoveries of 90.70%∼104.29%. Overall, this study provided a promising technology for chemical conversion from low-cost chamomile residue to attractive bifunctional fluorescent probe.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Science
·
2023
·Vol. 10
·期 22
·2301869
·
IF 15.1
Zhiyong Jiang,Xiaodi Zhu,Zhiyu Wang,Wei Liu,Wensheng Yan,Kevin Sivula,Jun Bao
The structural properties of octahedral sites (B Oh ) in spinel oxides (AB 2 O 4 ) play vital roles in the electrochemical performance of oxygen-related reactions. However, the precise manipulation of AB 2 O 4 remains challenging due to the complexity of their crystal structure. Here, a simple and versatile molten-salt-mediated strategy is reported to introduce Ni 2+ in B oh sites intentionally on the surface of zinc ferrite (ZnFe 2 O 4 , ZFO) to promote the active sites for photoelectrochemical (PEC) water splitting. The as-created photoanode (ZFO-MSNi) shows a remarkable cathodic shift of ≈ 450 mV (turn-on voltage of ≈ 0.6 V RHE ) as well as three times the 1-sun photocurrent density at 1.23 V RHE for PEC water oxidation in comparison with bare ZFO. A comprehensive structural characterization clearly reveals the local structure of the introduced Ni 2+ in ZFO-MSNi. Fewer surface trapping states are observed while the precisely introduced Ni 2+ and associated neighboring Fe (3- σ )+ (0< σ <1) sites unite in an edge-sharing octahedral configuration to function as Ni Fe dual active sites for PEC water oxidation. Moreover, open circuit potential measurements and rapid-scan voltammetry investigation give further insight into the enhanced PEC performance. Overall, this work displays a versatile strategy to regulate the surface active sites of photoelectrodes for increasing performance in PEC solar energy conversion systems.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Green Energy & Environment
·
2023
·
IF 13.3
Changjian Yuan,Xianglei Liu,Xinrui Wang,Chao Song,Hangbin Zheng,Cheng Tian,Ke Gao,Nan Sun,Zhixing Jiang,Yimin Xuan,Yulong Ding
Solar thermochemical energy storage based on calcium looping (CaL) process is a promising technology for next-generation concentrated solar power (CSP) systems. However, conventional calcium carbonate (CaCO 3 ) pellets suffer from slow reaction kinetics, poor stability, and low solar absorptance. Here, we successfully realized high power density and highly stable solar thermochemical energy storage/release by synergistically accelerating energy storage/release via binary sulfate and promoting cycle stability, mechanical strength, and solar absorptance via Al–Mn–Fe oxides. The energy storage density of proposed CaCO 3 pellets is still as high as 1455 kJ kg −1 with only a slight decay rate of 4.91% over 100 cycles, which is higher than that of state-of-the-art pellets in the literature, in stark contrast to 69.9% of pure CaCO 3 pellets over 35 cycles. Compared with pure CaCO 3 , the energy storage power density or decomposition rate is improved by 120% due to lower activation energy and promotion of Ca 2+ diffusion by binary sulfate. The energy release or carbonation rate rises by 10% because of high O 2− transport ability of molten binary sulfate. Benefiting from fast energy storage/release rate and high solar absorptance, thermochemical energy storage efficiency is enhanced by more than 50% under direct solar irradiation. This work paves the way for application of direct solar thermochemical energy storage techniques via achieving fast energy storage/release rate, high energy density, good cyclic stability, and high solar absorptance simultaneously.
✓ 已验证
产品关联
DOI
高影响因子
Gels
·
2023
·Vol. 9
·期 3
·190
·
IF 4.6
Jiaxin Lu,Wenke Hao,Xiaodong Wu,Xiaodong Shen,Sheng Cui,Wenyan Shi
It remains a big challenge to develop non-precious metal catalysts for oxygen evolution reaction (OER) in energy storage and conversion systems. Herein, a facile and cost-effective strategy is employed to in situ prepare the Ni/Fe oxyhydroxide anchored on nitrogen-doped carbon aerogel (NiFeOx(OH)y@NCA) for OER electrocatalysis. The as-prepared electrocatalyst displays a typical aerogel porous structure composed of interconnected nanoparticles with a large BET specific surface area of 231.16 m2·g−1. In addition, the resulting NiFeOx(OH)y@NCA exhibits excellent OER performance with a low overpotential of 304 mV at 10 mA·cm−2, a small Tafel slope of 72 mV·dec−1, and excellent stability after 2000 CV cycles, which is superior to the commercial RuO2catalyst. The much enhanced OER performance is mainly derived from the abundant active sites, the high electrical conductivity of the Ni/Fe oxyhydroxide, and the efficient electronic transfer of the NCA structure. Density functional theory (DFT) calculations reveal that the introduction of the NCA regulates the surface electronic structure of Ni/Fe oxyhydroxide and increases the binding energy of intermediates as indicated by the d-band center theory. This work provides a new method for the construction of advanced aerogel-based materials for energy conversion and storage.Keywords:carbon aerogel;Ni/Fe oxyhydroxide;nitrogen doping;OER;DFT calculations
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Zhenyu Shi,Wei Zhang,Chao Qin,Yan Yan,Zhanqi Gao,Liang Zhu,Chunmei Tang,Can Jin,Shaogui Yang
Developing efficient and stable catalysts for periodate (PI) activation is important for the abatement of emerging contaminants. Herein, Fe doped into polyprophyrin-based porous organic polymer (Fe@PrPOP) was prepared via a facile one-step reaction, and its catalytic capacity and reaction mechanism for PI activation were systematically investigated. Complete removal of bisphenol A (BPA) was achieved within 12 min under the Fe@PrPOP/PI system within a wide pH range (3–8), as well as no leaching of Fe was observed throughout the reaction. Nonradical pathways, including 1 O 2 and electron transfer, were identified for the BPA removal. According to substantial characterizations and density functional theory calculations, we concluded that the scattered Fe species on the surface of Fe@PrPOP were the main active sites, which was conducive to the adsorption and activation of PI. In addition, the Fe@PrPOP/PI system exhibited selective oxidation toward various organic pollutants with electron-rich moieties. Overall, this study provides a promising alternative in activating PI for the removal of organic compounds in water.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Shusu Shen,Honglin Li,Yang Shen,Renbi Bai,Ganwei Zhang
Metal organic frameworks (MOFs) possess excellent post-modification characteristics, high specific surface area, diversity of skeleton composition and pore tunability, have been increasingly applied in membrane modifications. In this work, NH 2 -MIL-88B(Fe) (NM88B) was first fixed onto polyvinylidene fluoride (PVDF) membrane by polyethyleneimine (PEI) through a vacuum-assisted self-assembly process, and the deposited NM88B was subsequently grafted with perfluoroalkyl polyethoxyacetic acid (FPEOAA) via a condensation reaction to realize the surface modifications. The modified membranes (named as N1F x ) showed improved hydrophilicity and underwater-oleophobicity. In addition, very high pure water flux (up to 9403 L‧m −2 ‧h −1 ) was obtained for the N1F x membranes due to the high porosity of introduced NM88B. In the dead-end filtration experiments of n -hexadecane-water emulsion, the optimum membrane N1F20 showed a good oil rejection rate (98.3%) and high permeation flux (667 L‧m −2 ‧h −1 ) which is approximately seven times of the pure PVDF membrane, indicating that the surface-modified membranes had excellent permeability and good separation performance. Even after four filtration cycles of oil-water emulsion, the rejection rate maintained higher than 97%, showing good reusability. Furthermore, the study found that N1F20 had certain acid and alkaline resistance and great potential for engineering applications.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Yan Wang,Ming Liu,Haibing Liu,Junhang Ding,Tian Wang,Jinfeng Dong,Bingbing Wang,Xing Tian,Yanzhi Xia
Search for anode materials for sodium ions batteries (SIBs) attracts researchers around the world because of their high-rate capability and excellent capacity. However, their stability needs to be improved. Thus, this work demonstrates a controllable method for the synthesis of one-dimensional (1D) hollow microfibers using “egg-box-structured” Fe-alginate fibers. The goal was to obtain an SIBs anode material with the optimal number of voids for efficient Na + storage. An optimized micro and pore structures were designed to obtain the shortest Na + -diffusion distance. The novel FeS 2 /Fe 2 O 3 -HF composite was able to withstand volume expansion during charge/discharge processes and showed high specificity and rate capacity (483 mAh/g at 100 mA/g, 241 mAh/g at 2000 mA/g). The capacity retention of this cell was excellent: it maintained 245 mAh/g over four hundred 1000 mA/g cycles. Thus, FeS 2 /Fe 2 O 3 -HF composite is a very promising active anode material for SIBs.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Tao Xie,Guancheng Xu,Yong Yao,Peiyan Li,Wene Du,Hui Ding,Jiahui Jiang,Li Zhang
Metal-nitrogen doped carbon materials (M/NCs) exhibit considerable potential as electrocatalysts for oxygen reduction reaction (ORR) in novel energy conversion and storage devices. Herein, the Fe–N x doped porous carbon catalysts (FeN x PCs) with three-dimensional (3D) pore structure are synthesized by in situ pyrolyzation of polypyrrole-coated Fe 2 O 3 (Fe 2 O 3 @PPy). Fe 2 O 3 derived from the iron-formate framework (Fe-FF) is partially dissolved to generate Fe 3+ for driving polymerization and served as template to form the 3D structure during polymerization. FeN x PCs exhibit satisfactory long-term durability and superior ORR activity ( E 1/2 = 0.89 V) compared to commercial Pt/C. The Zn-air battery (ZAB) assembled with FeN x PCs reveals excellent battery performance, including a high open circuit voltage of 1.50 V, peak power density of 155.4 mW cm −2 , and cycling stability with 500 cycles. The excellent ORR activity of FeN x PCs could be ascribed to the porous structure , Fe–N x active sites, and high defect level of FeN x PCs. This strategy can modulate 3D porous structure via self-template synthesis, which provides a novel insight for development of high-performance air cathode catalyst.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2023
·
IF 3.3
Xu Zhang,Zeyu Song,Xiaochen Yu,Xiaoqian Dong,Yadi Peng,Kexin Wei,Leichao Cao,Xiao He,Zhehan Zhang,Jibin Fan
A heterostructured MIL-101(Fe)/Ce/g-C 3 N 4 (MCCN) composite was designed and synthesized by solvothermal method . The composite was characterized by XRD , SEM, EDS , FT-IR, BET, XPS , UV–Vis DRS , PL and EIS. The MCCN photocatalyst exhibits superior photocatalytic performance for the degradation of rhodamine B (RhB) and methylene blue (MB), and the efficiencies are found to be 90.36% and 88.17%, respectively. The kinetic constants k of MCCN-3 against RhB and MB dyes are 0.04094 min −1 and 0.03319 min −1 , respectively, under visible light for 75 min irradiation. The improved degradation efficiency of MCCN attributed to the enhanced light absorption and the transport channels of electron-hole pairs by forming a heterojunction between MIL-101(Fe) and Ce/g-C 3 N 4 with a favourable band position. Moreover, the possible mechanism of photocatalytic degradation of dyes was proposed though free radical trapping experiments. This work provides an effective way for constructing novel visible-light-driven photocatalyst in the removal of organic molecules from waste water .
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2023
·
IF 13.6
Jinzhe Li,Chuyun Fu,Qiufeng Lin,Tao Zeng,Da Wang,Xinwen Huang,Shuang Song,Cong Li,Feilong Dong
Ferrate (Fe(VI), FeO 4 2- ) has been widely used in the degradation of micropollutants with the advantages of high redox potential , no secondary pollution and inhibition of disinfection byproducts . However, the low transformation of Fe(V) and/or Fe(IV) by Fe(VI) and incomplete mineralization of pollutants limit their application. In this work, we designed a photo electric cell with TiO 2 nanotubes (TNTs) and Pt serving as the anode and cathode to enhance the utilization of Fe(VI) (Fe(VI)-TNTs system). TNTs accelerated the generation of •OH via h VB + oxidation of OH - and photogenerated electrons at Pt boosted the transformation of Fe(VI) to Fe(V) and/or Fe(IV), resulting in a 22.2 % enhancement of chloroquine (CLQ) removal compared to Fe(VI) alone. The results from EPR and quenching tests showed that Fe(VI), Fe(V), Fe(IV), •OH, O 2 •- and h VB + coexisted in the Fe(VI)-TNTs system, among which Fe(V) and Fe(IV) were testified as the primary reactive substances accounting for 59 % of CLQ removal. The performance tests and recycling tests demonstrated that the Fe(VI)-TNTs system maintained excellent performance in an authentic water environment. The plausible degradation pathway of CLQ oxidized in the Fe(VI)-TNTs system was proposed with nine identified oxidation products via N-C cleavage, electrophilic addition and carboxylation processes. Based on the ECOSAR calculation, the constructed reaction system allowed a decrease in acute and chronic toxicity. Our findings provide a highly efficient and cost-effective strategy to enhance Fe(VI) application for micropollutant degradation in the future.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Food Measurement and Characterization
·
2023
·
IF 3.4
Du Juan,Liu Kai,Liu Jialei,Zhao Dianbo,Bai Yanhong
Herein, a novel core-shell material Fe 3 O 4 @MIL-100(Fe) was synthesized for developing a novel LFIA by a two-step solvothermal method with good magnetic properties and high specific surface area. It was used as both magnetic separation and label agents in LFIA for the detection of Listeria monocytogenes . The enrichment of target bacteria can be achieved quickly and easily by direct adsorption of Fe 3 O 4 @MIL-100(Fe) on the bacteria and by the action of an applied magnetic field. It was beneficial in separation and concentration of target bacteria from food samples. The Fe 3 O 4 @MIL-100(Fe)-bacterial was then detected by the anti- Listeria monocytogenes antibody on the T line under the capillary action of the LFIA strip, resulting in the formation of a visible orange band. Under the optimal conditions, there was a good linear relationship between the intensity of the T line and the quantity of Listeria monocytogenes in the range of 10 5 -10 8 CFU mL − 1 , with a visual detection limit of 3.3 × 10 6 CFU mL − 1 . The strip showed strong specificity for L. monocytogenes , and the detection could be finished in 45 min, without the needing of pre-treatment. Thus, the proposed Fe 3 O 4 @MIL-100(Fe)-based strip was simple prepared, label-free, low cost, rapid and convenience.
✓ 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）