JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Baolai Wang,Kaili Wei,Fuming Chen,Yinzhen Wang,Guannan He,Wei Li,Junming Liu,Qinyu He
It has been found it more difficult in completely degrading A-ring of tetracycline (TC) than completely degrading B-D rings of tetracycline. Thus, it is very necessary to find an effective route to completely degrading A-ring of tetracycline. In this work, a Z-scheme heterojuncted core-shell La(OH) 3 @BaTiO 3 composite (LB) was designed and fabricated through hydrothermal method . Many characterization techniques were employed to investigate the microstructure, phases, composition, energy band structure , and the lifetime of photogenerated carriers. In the mean time, the photocatalytic properties, including the degradation of A-ring and B-D rings of TC, as well as active species during photo-degradation were investigated. It is found that the as-prepared LB has an improved lifetime of photo-produced carriers, as well as high photocatalytic properties, being attributed to the core-shell structured heterojunction La(OH) 3 @BaTiO 3 . In addition, it is also found that ·O 2 − is more effective on degrading A-ring of TC than other active species, likely owed to the PKa3 value (3.3) of A-ring in TC. This work has supplied a route to completely degrading the A-ring of TC: rationally design and prepare a Z-scheme heterojuncted composites which supply very negative conduction band bottom potential.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2020
·
IF 3.83
Jingxuan Li,Yu Zeng,Yihang Fang,Nan Chen,Guoping Du,Aisheng Zhang
In this work, a sol-gel method was used to synthesize nanometer-sized rutile (La + Nb) co-doped TiO 2 powders, which were employed to prepare (La + Nb) co-doped TiO 2 ceramics. The average grain size of the (La + Nb) co-doped TiO 2 ceramics was less than 200 nm, which is much smaller than that of conventionally prepared co-doped TiO 2 ceramics generally having micron-sized grains. The effect of the (La + Nb) co-doping concentration on the microstructures and dielectric properties of the obtained ceramics was studied in detail. For a 2% co-doping concentration, it was found that the (La + Nb) co-doped TiO 2 ceramic had dielectric permittivity (εʹ) higher than 2 × 10 4 for frequency up to 1 MHz and the lowest dielectric loss (tanδ) was 0.019 at 1 kHz. The electron hopping and electron-pinned defect-dipole effect was considered as the main reasons for colossal permittivity and low tanδ. This work provides a technique for the synthesis of co-doped TiO 2 nanoparticles and preparation of submicron-grain-sized co-doped TiO 2 ceramics with good dielectric properties.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2019
·Vol. 20
·期 11
·2694
·
IF 4.183
Wenqi Li,Yubing Yong,Yue Zhang,Yingmin Lyu
Background: The LA hybrid lily ‘Aladdin’ has both excellent traits of Longiflorum hybrids and Asiatic hybrids—such as big and vivid flower, strong stem, high self-propagation coefficient, and shorter low temperature time required to release bulb dormancy in contrast to Oriental hybrids. A genome-wide transcriptional analysis using transcriptome RNA-Seq was performed in order to explore whether there is a gibberellin floral induction pathway in the LA hybrid lily. Subsequently, gene co-expression network analysis was used to analyze the possible interactions of key candidate genes screened from transcriptome data. At the same time, a series of physiological, biochemical, and cultivation tests were carried out. Results: The content of five endogenous hormones changed sharply in the shoot apex during the treatment of 200 mg/L exogenous gibberellin and the ratio of ABA/GA3dropped and stayed at a lower level after 4 hours’ treatment from the higher levels initially, reaching a dynamic balance. In addition, the metabolism of carbohydrates in the bulbs increase during exogenous gibberellin treatment. A total of 124,041 unigenes were obtained by RNA-seq. With the transcriptome analysis, 48,927 unigenes and 48,725 unigenes respectively aligned to the NR database and the Uniprot database. 114,138 unigenes, 25,369 unigenes, and 19,704 unigenes respectively aligned to the COG, GO, and KEGG databases. 2148 differentially expression genes (DEGs) were selected with the indicators RPKM ≥ 0, FDR ≤ 0.05 and |log2(ratio)| ≥ 2. The number of the upregulated unigenes was significantly more than the number of the downregulated unigenes. Some MADS-box genes related to flowering transformation—such asAGL20,SOC1, andCO—were found to be upregulated. A large number of gibberellin biosynthesis related genes such asGA2ox,GA3ox,GA20ox,Cytochrome P450,CYP81, and gibberellin signal transduction genes such asDELLA,GASA, andGID1were significantly differentially expressed. The plant hormones related genes such asNCED3and sugar metabolism related genes such asα-amylase,sucrose synthase hexokinase, and so on were also found expressing differentially. In addition, stress resistance related genes such asLEA1,LEA2,LEA4,serine/threonine protein kinase,LRR receptor-like serine/threonine protein kinase,P34 kinase,histidine kinase 3and epigenetic related genes in DNA methylation, histone methylation, acetylation, ubiquitination of ribose were also found. Particularly, a large number of transcription factors responsive to the exogenous gibberellin signal includingWRKY40, WRKY33, WRKY27, WRKY21, WRKY7, MYB, AP2/EREBP, bHLH, NAC1, NAC2, andNAC11were found to be specially expressing. 30 gene sequences were selected from a large number of differentially expressed candidate genes for qRT-PCR expression verification (0, 2, 4, 8, and 16 h) and compared with the transcriptome expression levels. Conclusions: 200mg/L exogenous GA3can successfully break the bulb’s dormancy of the LA hybrid lily and significantly accelerated the flowering process, indicating that gibberellin floral induction pathway is present in the LA lily ‘Aladdin’. With the GCNs analysis, two second messenger G protein-coupled receptor related genes that respond to gibberellin signals in the cell were discovered. The downstream transport proteins such asAMT,calcium transport ATPase, andplasma membrane ATPasewere also discovered participating in GA signal transduction. Transcription factors includingWRKY7,NAC2,NAC11, andCBFspecially regulated phosphorylation and glycosylation during the ubiquitination degradation process ofDELLAproteins. These transcription factors also activated in abscisic acid metabolism. A large number of transcription factors such asWRKY21,WRKY22,NAC1,AP2,EREB1,P450, andCYP81that both regulate gibberellin signaling and low-temperature signals have also been found. Finally, the molecular mechanism of GA floral induction pathway in the LA hybrid lily ‘Aladdin’ was constructed.Keywords:GA floral induction pathway;LA hybrid lily;transcriptome RNA-Seq;GCN;qRT-PCR
研究领域:
植物学
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遗传学
·
分子生物学
·
植物生理学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2025
·
IF 3.2
Zhu Xueli,Yin Xiangru,Zhang Yinan,Mei Qiqi,Bai Jinshuo,Yang Guixiang,Zhang Dequan,Liang Xiaoping
V 2 O 5 films with high ion storage capacity (Q) and wide optical modulation range (∆T) have great potential for application in electrochromic devices. In this paper, Ni-La-V 2 O 5 porous ion storage films are prepared by the sol–gel method. The effects of Ni-La co-doping content, PEG content, and heat treatment temperature on the properties of V 2 O 5 films were investigated. By comparison, it was found that the Q value of 9 mol% Ni-5.5 mol% La-V 2 O 5 film was increased compared to 9 mol% Ni-V 2 O 5 film, but ∆T was decreased. In order to improve ∆T, Ni-La-V 2 O 5 porous ion storage films were prepared using Ni-La co-doping and PEG pore-former, and the optimization of process parameters was carried out via Response Surface Methodology (RSM). The RSM results showed that the influence on the Q value was in the following order: heat treatment temperature > Ni-La co-doping content > PEG content. Under the near-optimal process parameters, a satisfying V 2 O 5 film with a high Q value (120.23 mC/cm 2 ), a good ∆T (79.8%), and a short response time (3.1 s/2.8 s) were obtained, which further demonstrated the superior electrochromic performance. Graphical
研究领域:
材料科学
·
电致变色技术
✓ 已验证
DOI
高影响因子
Current Nanoscience
·
2020
·Vol. 16
·期 5
·805-815
·
IF 1.836
Qiu Fanglv,Wang Zi,Chen Hongjun,Ma Yue,Wu Hang,Yan Lu,Pei Lizhai,Fan Chuangang
Background: Removal of the organic pollutants using the photo-catalysts by the photocatalytic treatment process under natural sunlight irradiation has attracted great attention owing to the complete destruction of the organic pollutants. The La bismuthate nanorods possess good photocatalytic
performance for the removal of the methylene orange (MO) under the sunlight irradiation. Objective: The aim is to synthesize La bismuthate nanorods by hydrothermal method and research the photocatalytic performance of the La bismuthate nanorods for MO degradation under sunlight irradiation.
Methods: La bismuthate nanorods have been synthesized by a simple sodium dodecyl benzene sulfonate (SDBS)-assisted hydrothermal method using sodium bismuthate and La acetate as the starting materials. The obtained La bismuthate products were investigated by X-ray diffraction (XRD), scanning
electron microscopy (SEM), transmission electron microscopy and solid UV-vis diffuse reflectance spectrum. Results: With different SDBS concentration, hydrothermal temperature and reaction time, different morphologies of the La bismuthate products were obtained. XRD analysis shows that
the La bismuthate nanorods obtained from 180°C for 24 h with 5wt.% SDBS are composed of orthorhombic La1.08Bi0.92O3.03 phase. Electron microscopy observations show that the La bismuthate nanorods with flat tips have the length of longer than 10 μm and diameter of about 20-100 nm, respectively.
The morphology and structure of the products are closely related to the SDBS concentration, hydrothermal temperature and reaction time. Solid UV-vis diffuse reflectance spectrum shows that the band gap of the La bismuthate nanorods is 2.37 eV. The La bismuthate nanorods show good photocatalytic
performance for the degradation of MO under the sunlight irradiation. MO solution with the concentration of 10 mg.L-1 can be totally removed by 10 mg La bismuthate nanorods in 10 mL MO aqueous solution under sunlight irradiation for 6 h. Conclusion: The photocatalytic performance for
the removal of MO is dependent on the sunlight irradiation time and dosage of the La bismuthate nanorods. The La bismuthate nanorods exhibit great potential for the removal of organic pollutants.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Suyu Kong,Meili Ding,Mengjiao Yu,Wei Rong,Yang Wang,Jianfeng Yao
Developing high-efficiency adsorbents with sufficient active species to remove phosphate from wastewater is still a significant and formidable challenge. Herein, a metal-ion modification strategy was developed to construct a series of lanthanum (La 3 + )-functionalized zirconium-based metal-organic frameworks containing different functional groups through a one-step solvothermal process. The investigations for the influence of functional groups of ligands on the resulting La species and the role of La(OH) 3 in the phosphate removal are the primary focuses of this research. Unlike the simple La doping in UiO-66, UiO-66-NH 2 and many previously reported MOF systems, La(OH) 3 was in situ formed during the preparation of La-functionalized UiO-66-OH, which was confirmed by powder X-ray diffraction. At room temperature, the optimized 0.5La-UiO-66-OH, with a molar ratio of La 3+ versus the total metal precursor of 0.5, exhibits a desirable adsorption capacity of 219.6 mg g −1 , exceeding those of UiO-66 (146.8 mg g −1 ), UiO-66-OH (158.9 mg g −1 ), and many reported adsorbents. Besides, reusability tests demonstrate that 0.5La-UiO-66-OH can maintain high adsorption performance (96 %) after five cycles and the practical usability of by 0.5La-UiO-66-OH is confirmed using real lake water. In-depth investigations (X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy) on mechanism unveiled that the adsorption of phosphate by 0.5La-UiO-66-OH involved a combined process of electrostatic attraction and ligand exchange. This research presents the first regulation of generating active La species within MOFs through subtle modification and provides valuable insights for wastewater treatment.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Huajie Lan,Lei Tian,Wenfeng Wang,Yuan Li,Shumin Han,Lu Zhang
The currently used β -Ni(OH) 2 for alkaline nickel batteries are falling short of higher capacity demand. In contrast, α -Ni(OH) 2 with high theoretical capacity can address this need. However, the α -Ni(OH) 2 suffers from poor stability and intrinsic low electrical conductivity. Herein, we designed La/Ce-doped spherical α -Ni(OH) 2 and study the effect of La/Ce on the structure and electrochemical properties of α -Ni(OH) 2 . The increased specific surface area of the α -Ni(OH) 2 with La/Ce doping reduces the electron transfer resistance. The La/Ce-doped α -Ni(OH) 2 with 2 at% La (Ni-La-2) and 3 at% Ce (Ni-Ce-3) doping deliver high capacities of ∼365 mAh g –1 and ∼373 mAh g –1 , respectively, which is only 309 mAh g –1 for the pure α -Ni(OH) 2 . Meanwhile, the La/Ce-doping stabilizes the structural robustness of the α -Ni(OH) 2 during cycling. Notably, Ni-La-2 shows a superior stable cycling life with a capacity retention of ∼95 % after 400 cycles, which is ∼20 % higher than that of pure α -Ni(OH) 2 .
研究领域:
材料科学
·
电化学
·
储能技术
✓ 已验证
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2025
·
IF 6
Feng Zhang,Sen Zhang,Xing Liu,Wei Gao,Jun Luo,Yi-fan Pan,Wei-Juan Zheng,Xin Hu,Hong-zhen Lian
Background Glycoproteins are critical in various biological processes and attract lots of attention of researchers. It still remains a challenge to detect glycopeptides by mass spectrometry because of their low abundance with heterogeneity and lability, as well as signal suppression by non-glycopeptides. The boronate affinity-based enrichment is an effective solution for detecting cis -diols-containing compounds including glycopeptides in complex matrices. However, there has not been any report about absolute quantitation of boron in the absorbent materials for glycopeptides, which obstructed the tailored design of boronate affinity materials and deeper understanding of interaction mechanisms. Results This work presents the development of a boronic acid-functionalized magnetic zirconium metal-organic framework (mMOF–AAPBA) with actual boron content for specific capture of glycopeptides. The synthesized nanocomposite could enrich glycopeptides by magnetic solid-phase extraction (MSPE) via the synergistic effect of hydrophilic interaction and boronate affinity. After full characterization including quantitative analysis of boron by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), mMOF–AAPBA was applied as MSPE absorbent to capture glycopeptides. Under the optimized conditions, it could enrich 28 glycopeptides both from horseradish peroxidase and immunoglobulin digests, with a limit of detection of 1 fmol μL −1 coupled with matrix-assisted laser desorption/ionization time of flight mass spectrometry. The boronate affinity absorbent also possessed great ability of anti-interference and good reusability. Furthermore, it possessed high performance in enriching glycopeptides in real samples including human saliva and traditional Chinese medicine injections. Significance In the preparation of the boron-containing nanocomposites, there is a special interest that an accurate protocol was established to assay boron based on LA-ICP-MS assisted by home-made matrix reference substances for the first time. These findings highlight the quantitative boron-containing mMOF–AAPBA as a robust affinity material for glycopeptide enrichment in real biological samples, offering potential applications in glycoproteomics and other cis -diols compound related researches.
研究领域:
分析化学
·
生物化学
·
纳米技术
·
质谱学
·
糖蛋白质组学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2020
·Vol. 45
·期 3
·1584-1589
·
IF 3.288
Kui Liu,Yafei Cheng,Ying Shi,Wei Zhang,Yu Wang,Fan Tang,Xijie Lin
La–Ni bimetallic oxides, including LaNiO3 and La2NiO4, were prepared by a facile co-precipitation process, followed by calcination treatment. The formation process of these two La–Ni bimetallic oxides was traced by X-ray diffraction, and the calcination temperature was determined to have a crucial influence on the composition and crystalline structure of the final sample. These as-prepared La–Ni bimetallic oxides were used as catalysts for the decomposition of hydrogen peroxide. Benefiting from the synergistic effect between La and Ni, these La–Ni bimetallic oxides showed superior catalytic ability than the single-components oxides such as La2O3, Ni2O3, and NiO. Additionally, the La–Ni bimetallic oxides exhibited efficient catalytic activity after reusing them several times, showing a desirable cyclic performance. Moreover, the kinetics of the reaction was investigated. The activation energy of this reaction significantly decreased under the catalysis from the as-prepared La–Ni bimetallic oxides, further confirming the promising catalytic potential of these La–Ni bimetallic oxides.
研究领域:
材料科学
·
催化
·
化学工程
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2017
·
IF 3.582
Lingwei Lu,Shuang Ni,Gang Liu,Xiaoxiang Xu
The crystal structure of a photocatalyst generally plays a pivotal role in its electronic structure and catalytic properties . In this work, we synthesized a series of La/Cr co-doped perovskite compounds ATiO 3 (M = Ca, Sr and Ba) via a hydrothermal method . Their optical properties and photocatalytic activities were systematically explored from the viewpoint of their dependence on structural variations, i.e. impact of bond length and bond angles. Our results show that although La/Cr co-doping helps to improve the visible light absorption and photocatalytic activity of these wide band gap semiconductors , their light absorbance and catalytic performance are strongly governed by the Ti O bond length and Ti O Ti bond angle. A long Ti O bond and deviation of Ti O Ti bond angle away from 180° deteriorate the visible light absorption and photocatalytic activity. The best photocatalytic activity belongs to Sr 0.9 La 0.1 Ti 0.9 Cr 0.1 O 3 with an average hydrogen production rate ∼2.88 μmol/h under visible light illumination (λ ≥ 400 nm), corresponding to apparent quantum efficiency ∼ 0.07%. This study highlights an effective way in tailoring the light absorption and photocatalytic properties of perovskite compounds by modifying cations in the A site.
研究领域:
材料科学
·
物理化学
·
能源化学
·
无机化学
·
光催化
✓ 已验证
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2025
·
IF 3.7
Liqiang Yang,Liang Li
Graphical Atomic-level La-modulated NiFeP composites were prepared via a facile co-precipitation route followed by in situ phosphatization of La-doped NiFe-LDH precursors. Benefiting from the optimized electronic structure, the composite diver overall water splitting at 10 mA cm −2 with a low cell voltage of 1.59 V and retains performance for over 24 hours. Rare-earth La-modulated NiFeP composites were prepared via a facile co-precipitation route followed by in situ phosphatization of La-doped NiFe-LDH precursors. Benefiting from the optimized electronic structure, the La0.3-NiFeP catalyst demonstrates remarkable hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) performance. In 1 M KOH, this catalyst delivers 10 mA cm −2 at overpotentials of only 97 mV (HER) and 271 mV (OER), while demonstrating excellent operational durability. When configured as a dual-electrode water electrolyzer, La0.3-NiFeP divers overall water splitting at 10 mA cm −2 with a low cell voltage of 1.59 V and retains performance for over 24 hours, surpassing most reported transition metal-based electrocatalysts.
研究领域:
电化学
·
催化
·
材料科学
·
能量转换
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Qinqin He,Wenhao Lu,Hang Zhou,Xiaonan Ji,Wei Hu,Kuo Pang,Zedong Teng,Xin Zhao,Lintao Wang,Keyu Fan,Feichao Hu,Min Li
Endogenous phosphorus (P) release is one of the key factors leading to eutrophication of water body. Phosphorus in sediments is difficult to be removed or recovered due to its chemical stability and complex morphology. Meanwhile, lanthanide metal organic framework (La-MOF) shows high efficiency in phosphate adsorption, but faces challenges in solid-liquid separation due to its powder form. In this study, the phosphorus solubilizing bacteria (PSB), Leclercia adecarboxylata L1–5, was used to transform some fractions of insoluble phosphorus in sediment into soluble phosphorus, and the La-MOF/Polypropylene (La-MOF/PP) fabric was innovatively prepared for phosphate adsorption. Solvothermal method was used for the preparation of La-MOF/PP fabric and the optimum synthesis time was 12 h. The best effect of phosphate removal was achieved when the La-MOF/PP fabric dosage was 1 g/L and the pH was 7. The regeneration efficiency of the material remained stable after five cycles of adsorption and desorption. Furthermore, the simulation results showed that PSB can release dissolved phosphate up to 5.40 mg P/L from sediment. After coupling with the La-MOF/PP fabric, the concentration of phosphate in the overlying water was significantly reduced to 0.38 mg P/L, which was much lower than that in the CK group (2.4 mg P/L). This study demonstrated that the coupled system of PSB and La-MOF/PP fabric could effectively reduce the sediment phosphate content, mitigate the negative impact of possible release of sediment phosphorus and degradation of the overlying water quality. It provided a promising technique for in-situ remediation of sediment phosphate.
研究领域:
环境科学
·
材料科学
·
生物技术
·
水污染控制
✓ 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）