COMPOSITES SCIENCE AND TECHNOLOGY
·
2017
·
IF 4.873
Shunli Liu,Jun Ling,Kewen Li,Fang Yao,Olayinka Oderinde,Zhihong Zhang,Guodong Fu
This paper reports an artificial nacre-like composite paper based on sodium alginate (SA) and graphene oxide (GO) by lanthanide ions cross-linking. SA-coated GO were used as building “bricks and mortar” and self-assembled into aligned GO/SA composite hydrogel by the coordination of lanthanide ions. Subsequently, the hierarchical GO/SA composite paper was formed under evaporation. Four types of lanthanide ions (Nd 3+ , Ce 3+ , Gd 3+ , and Yb 3+ ) were used to fabricate hierarchical GO/SA composite papers. The lanthanides enhanced the mechanical properties of the GO/SA composite papers (strength of 255.8 ± 8.52 MPa and toughness of 4.83 ± 0.28 MJ m −3 ) and endowed the papers with high stability. Due to the anisotropic nature along parallel and perpendicular directions , the hierarchical GO/SA composite papers exhibited a specific thermal conductivity . These features greatly expand the application of the composite papers, which are believed to show competitive advantages in aerospace, electronic devices, and thermal interface materials .
研究领域:
材料科学
·
纳米技术
·
复合材料
·
热管理
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Yinhua Wang,Songchao Bai,Hao Liang,Chao Li,Tianya Tan,Gang Yang,Jiwei Wang
Lead-free double perovskites have become the research hotspot in the optoelectronic fields. Then, it is a challenge to utilize the lattice doping by different rare earth ions with rich energy level and unique luminescence for emerging photonic applications. Here, we successfully prepared Sb 3+ and Ln 3+ ions doped Cs 2 NaYCl 6 single crystals (SCs), bringing tunable bright luminescent emissions of blue, red, and white light, the highest photoluminescence quantum yield (PLQY) is up to 58.33%. Based on excellent and tunable luminescent properties, the multicolor light-emitting diodes (LEDs) applications for the rare earth-based double perovskite SCs were designed. These findings indicate that rare earth-based double perovskite will provide a broader application space for lighting.
研究领域:
光电
·
材料科学
·
光子学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2018
·Vol. 29
·期 10
·8293-8302
·
IF 2.324
Qin Zhuozhuo,Liu Wenxia,Li Zhenzhen,Chen Huabin,Li Guodong,Yu Dehai
Doping lanthanide ions in metal oxides is an efficient way to develop visible and near-infrared (NIR) active photocatalysts. Herein, we present a method to develop NIR active photocatalyst via doping Er 3+ into ZnO/ZnAl 2 O 4 multi-phase oxides by isomorphous replacement of Al 3+ with Er 3+ during the preparation of Zn/Al-hydrotalcite-like compound, specifically, the calcination of the hydrotalcite-like compound at 900 °C. The as-prepared Er 3+ -doped catalyst and its precursor were characterized using X-ray diffraction technique, scanning electron microscopy, high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy and near-infrared-visible-ultraviolet diffused reflectance spectroscopy. It was found that the doping of Er 3+ causes lattice expansion for ZnO and ZnAl 2 O 4, and yields optical absorptions at visible and NIR light regions. The obtained Er 3+ -doped ZnO/ZnAl 2 O 4 multi-phase oxides produce superoxide and hydroxyl radicals in the photocatalytic process, and show enhanced ultraviolet (UV) photocatalytic activity on degradation of methyl orange, compared to undoped ZnO/ZnAl 2 O 4 multi-phase oxides. The Er 3+ -doped ZnO/ZnAl 2 O 4 multi-phase oxides also possess visible and NIR light photocatalytic activities, and its photocatalytic activity is rather stable under UV, visible and NIR light irradiation. This work provides a new way for doping of lanthanide ions in metal oxides and designing full-spectrum photocatalysts.
研究领域:
材料科学
·
光催化
·
无机化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2025
·
IF 3.6
Pengbo Zhu,Xiao Liu,Hao Ren,Yao Wang,Jun Li,Yan Zhang,Zhonglin Du,Qiao Wang,Soo Wohn Lee,Laurence A. Belfiore,Mikhail Artemyev,Jianguo Tang
Due to the quantum confinement effect, the quantum dots (QDs) behave distinguished photo-/electro-luminescence property. However, due to so small size with 3–5 nm diameter, their surface defects cause spectral limitation and luminescent instabilities, which inhibited the applications of QDs in key areas. It should be very interesting if rich luminescence spectra of lanthanides can be used to enhance the emission and to extend the spectra of sulfide-base QDs. However, the sulfur repellency of lanthanide ions (such as Eu 3+ ) is the negative factor. In this work, we incorporated lanthanide ions (Eu 3+ ) complexes into QDs to realize this. Diketone (i.e., acetylacetone (ACAC)) and phenanthroline (Phen) were chosen as the ligands of Eu 3+ (i.e., Eu) chlorides. The experimental data indicated that the incorporating Eu 3+ complexes into the ZnS-modified CIZS QDs resulted in double enhancement of the luminescent intensity, the blue-shift of emission wavelength from 637 to 575 nm, the PLQY increase from 55.94 % to 81.56 %. Simultaneously, the Zn 2+ in the shell, under the influence of the Eu 3+ , reacted with oxygen vacancies in the environment. XRD shows the characteristic peaks of ZnO, indicating the formation of ZnO QDs.
研究领域:
材料科学
·
纳米技术
·
光电子学
·
无机化学
·
固体物理
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 32
·期 12
·2107267
·
IF 18.808
Jianpu Tang,Junhan Ou,Chenxu Zhu,Chi Yao,Dayong Yang
Deoxyribonucleic acid (DNA) hydrogel has been synthesized generally via the molecular interaction of either DNA base-pairing, covalent bonding, or physical entanglement. To surmount the limitations of DNA as the sole module in materials, new assembly modes are desired to incorporate to expand the functionalities of DNA hydrogel. Herein, a supramacromolecular assembly-based strategy is reported to prepare a hybrid DNA hydrogel via interfacial assembly of DNA chains and upconversion nanoparticles (UCNPs), remarkably of which the synthesis process finished within one second, termed as flash synthesis. The flash synthesis is accomplished through the electrostatic attraction, interfacial assembly, and cross-linking of DNA chains on the surface of UCNPs. The length of DNA and the crystalline form of UCNPs are proven to be essential factors in the construction of a hydrogel network. The rationally designed DNA endowed hydrogel with functions to precisely recognize and isolate specific cells, and lanthanide ions-doped UCNPs protected cells from the damage of near-infrared irradiation through the upconversion effect. It is envisioned that the flash synthesis provides a new mode to prepare the DNA hydrogel and expands the functionalities to realize more real-world applications.
研究领域:
材料科学
·
生物技术
·
纳米技术
·
细胞生物学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 20
·8061-8069
·
IF 8.067
Xicai Liu,Huan Wang,Dongcheng Yang,Fangli Jing,Hailong Qiu,Hongjun Liu,Zhanggui Hu
Trivalent lanthanoid ions (Ln3+) with substantial inherency have been utilized in luminescent materials and photonic devices for decades. Because the periodic physicochemical properties of lanthanoid compounds have been found to be closely related to the regular f-configuration of the elements, it is essential to study the interaction between the f-electrons and the circumstances for developing new applications. Two-dimensional transition metal dichalcogenides (2D-TMDs) manifest as excellent matrices for tunable electronic structures owing to their chemical accessibility and physical sensitivity. Herein, a novel method is proposed for the fabrication of Ln3+ substitutional doped MoS2 using a Na2MoS4 solution precursor. Monolayers doped with all Ln3+ ions (except Pm3+) are synthesized, which is confirmed by structural characterization. Their shrunk Raman frequency differences and the blue-shifting and intensity boosting of their photoluminescence (PL) peaks are observed. Periodic trends are discovered in the PL spectra, which are sensitive to specific elements. The results reveal the ordered interaction between f-orbitals and the host possessing an appreciable coulombic field, spin–orbital coupling, and a crystal field. This work offers a crucial extension of lanthanoid laws and a new approach to the modulation of the properties of 2D crystals.
研究领域:
材料科学
·
纳米技术
·
光电子学
·
物理化学
✓ 已验证
DOI
高影响因子
Materials Advances
·
2023
·Vol. 4
·期 7
·1687-1693
·
IF 5
Wenyu Wei,Manman He,Jianrui Ma,Yirui Fan,Peng Liu,Jianxi Xiao
Protein–inorganic hybrid nanomaterials are a new type of functional materials that combine the advantages of inorganic and organic polymers and nanomaterials. We herein report a simple one-pot method for synthesizing organic–inorganic hybrid nanoflowers under mild biomineralization conditions using proteins as an organic component and lanthanide fluorides as an inorganic component. The as-prepared protein–rare earth fluoride nanoflowers exhibit high performance in maintaining enzyme stability and catalytic activity due to their high surface area and graded nanostructures, and have finely tunable luminescence properties of lanthanide ions. Various proteins such as trypsin, BSA, collagen and FtsZ have all displayed excellent capability to produce Na5Yb9F32 nanoflowers, demonstrating that protein-templated biomineralization provides a universal and robust strategy for the synthesis of protein–rare earth fluoride hybrid nanoflowers. The novel luminescent protein–rare earth fluoride nanoflowers may have promising applications in biosensing, biocatalysis and medical diagnostics and treatment.
研究领域:
材料科学
·
纳米技术
·
生物化学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2024
·
IF 5.3
Wenjuan Wang,Wenting Li,Jiaqi Shi,Saeed Ahmed Memon,Yun Wei
Rare earth elements are non-renewable resources. During their processing, a lot of wastewater are produced, which poses a danger to human beings and the environment. Herein, the enrichment method of solvent sublation for La (III), Ce (III), Gd (III) and Er (III) was designed and established. Enrichment parameters pH, flotation time, extractant concentration and air flow rate were optimized. The result showed that the highest recovery of La (III) reached up to 92.33 % under the optimized conditions of pH 8, 10 min of flotation time, 0.15 mol L -1 of the extractant 2-ethylhexyl phosphate acid-2-ethylhexyl ester and 30 mL min −1 of air flow rate. The light rare earth element Ce (III) and heavy rare earth elements Gd (III) and Er (III) were also examined and obtained with maximum recovery. The stability of the extractant complexation with rare earth ions and the mechanism of competitive extraction were studied by density functional theory calculations. The extraction ability was following sequence of La (III) < Ce (III) < Gd (III) < Er (III). The enrichment of rare earth elements from real water samples was investigated and obtained result was consistent with the experiment result of synthetic solutions. The established high speed countercurrent chromatography method was used to successfully separate La (III), Ce (III), Gd (III) and Er (III) from the solution of rare earth ions enriched by solvent sublation.
研究领域:
环境科学
·
化学工程
·
分析化学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Xiansong Shi,Xingyuan Wang,Tianci Feng,Tong Ju,Jianghai Long,Congcong Yin,Zhe Zhang,Yong Wang
Permanently microporous materials have evolved as focal point of research for tackling issues in separation science and membrane technology. Covalent organic frameworks (COFs) stand out for their distinctive synergy of crystalline nature, uniform channels, and structural diversities. Three-dimensional (3D) COFs, distinguished by angstrom-sized and interconnected channels, hold special promise for separating small targets; however, this potential remains underexplored. Here, we report feasible growth of cationic 3D COF membranes on a flexible polymer substrate for versatile nanofiltration toward both molecules and ions. Through comprehensive performance evaluations, we reveal that the resultant membrane exhibits durable and prominent molecular selectivity to separate fine species with molecular weights above 300 g mol -1 at fast methanol permeation. Lanthanide ions of industrial value also can be harvested by the membrane with rejection rates of up to 91.4%. Together with its nonselectivity to competing ions, our membrane implements efficient extraction of rare earth elements from ion mixtures. These findings illuminate the potential of 3D COFs for liquid separation and offer a solution to building versatile membranes.
研究领域:
材料科学
·
化学工程
·
环境科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 8
·1-10
·
IF 5.479
Niazi Sobia,Khan Imran Mahmood,Yu Ye,Pasha Imran,Shoaib Muhammad,Mohsin Ali,Mushtaq Bilal Sajid,Akhtar Wasim,Wang Zhouping
A “turn on” time-resolved fluorometric aptasensor is described for the simultaneous detection of zearalenone (ZEN), trichothecenes A (T-2), and aflatoxin B 1 (AFB 1 ). Multicolor-emissive nanoparticles doped with lanthanide ions (Dy 3+ , Tb 3+ , Eu 3+ ) were functionalized with respective aptamers and applied as a bioprobe, and tungsten disulfide (WS 2 ) nanosheets are used as a quencher of time-resolved fluorescence. The assay exploits the quenching efficiency of WS 2 and the interactions between WS 2 and the respective DNA aptamers. The simultaneous recognition of the three mycotoxins can be performed in a single solution. In the absence of targets, WS 2 is easily adsorbed by the mixed bioprobes via van der Waals forces between nucleobases and the WS 2 basal plane. This brings the bioprobe and WS 2 into close proximity and results in quenched fluorescence. In the presence of targets, the fluorescence of the bioprobes is restored because the analytes react with DNA probe and modify their molecular conformation to weaken the interaction between the DNAs and WS 2 . Under the optimum conditions and at an excitation wavelength of 273 nm, the time-resolved fluorescence intensities (peaking at 488, 544 and 618 nm and corresponding to emissions of Dy 3+ , Tb 3+ and Eu 3+ ) were used to quantify ZEN, T-2 and AFB 1 , respectively, with detection limits of 0.51, 0.33 and 0.40 pg mL −1 and a linear range from 0.001 to 100 ng mL −1 . The three mycotoxins can be detected simultaneously without mutual interference. The assay was applied to the quantification of ZEN, T-2 and AFB 1 in (spiked) maize samples. This homogeneous aptamer based assay can be performed within 1 h. Conceivably, it can become an alternative to other heterogeneous methods such as the respective enzyme-linked immunosorbent assays.
Schematic presentation of an aptasensor for simultaneous detection of zearalenone, trichothecenes A and aflatoxin B 1 using aptamer modified time-resolved fluorescence nanoparticles as signalling probes and tungsten disulfide as the quencher. This assay shows lower detection limit and requires no washing steps.
研究领域:
分析化学
·
食品安全
·
生物技术
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Energy Materials
·
2018
·Vol. 8
·期 31
·1802346
·
IF 21.875
Jialong Duan,Yuanyuan Zhao,Xiya Yang,Yudi Wang,Benlin He,Qunwei Tang
All-inorganic cesium lead bromide (CsPbBr 3 ) perovskite solar cells have attracted enormous attention owing to their outstanding stability in comparison with organic–inorganic hybrid devices. The greatest weakness for inorganic CsPbBr 3 solar cells is their lower power conversion efficiencies, mainly arising from inferior light-absorbance range and serious charge recombination at interfaces or within perovskite films. To address this issue, the lattice doping of lanthanide ions (Ln 3+ = La 3+ , Ce 3+ , Nd 3+ , Sm 3+ , Eu 3+ , Gd 3+ , Tb 3+ , Ho 3+ , Er 3+ , Yb 3+ , and Lu 3+ ) into CsPbBr 3 films for all-inorganic solar cells free of hole-transporting materials and precious metal electrodes is presented. Arising from the enlarged grain size and prolonged carrier lifetimes upon incorporating Ln 3+ ions into perovskite lattice, the performances of these inorganic CsPbBr 3 solar cell devices are significantly enhanced, achieving a champion efficiency as high as 10.14% and an ultrahigh open-circuit voltage of 1.594 V under one sun illumination. Meanwhile, the nearly unchanged efficiency upon persistent attack by 80% RH in air atmosphere over 110 d and enhanced thermal stability at 80 °C over 60 d provide new opportunities of promoting commercialization of all-inorganic CsPbBr 3 perovskite solar cells.
研究领域:
光伏技术
·
材料科学
·
无机化学
·
可再生能源
·
纳米技术
✓ 已验证
DOI
高影响因子
Materials Today Chemistry
·
2021
·
IF 8.301
R.R. Yang,M. Li,Y.F. Zhao,P. Wang,S. Ye
Halogen vacancies are regarded to play a vital role in photo-induced phase segregation and the resulting switchable emission colors in the soft mixed-halide perovskites ; however, its control strategy via the balanced Pb 0 defects remains a big challenge. The research reports the regulation of synthesis and photochromic behavior via interfacial Eu 3+ /Eu 2+ -Pb 0 /Pb 2+ redox in composites of porous Ca 0.9 Eu 0.1 MoO 4 and nominal mixed-halide perovskite CsPbCl 1.5 Br 1.5 . The composite takes full advantage of Eu 3+ ions with the concerns of its luminescence and variable valences. It provides an additional emission color besides the halide perovskite, manipulates the Pb 0 defects and the resulting Br-rich domain via interfacial redox reaction in the composites. The more contents of surfaced Eu 3+ caused by substituting the unequivalent Ca 2+ ions and the high volume-to-surface ratio of the porous Ca 0.9 Eu 0.1 MoO 4 guarantees the interfacial access for the Eu 3+ and the halides. The research provides some perspectives on the regulation of ionic valence and photoluminescence of halide perovskites with the use of lanthanide ions. The composites may find potential applications in the anti-counterfeiting field.
研究领域:
材料科学
·
光电技术
·
纳米技术
·
化学
✓ 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）