Nanoscience and Nanotechnology Letters
·
2015
·Vol. 7
·期 5
·398-401
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IF 1.431
Wang Shanshan,Zhang Jun,Peng Feng,Shao Lexi
Micron-sized Cu2FeSnS4 single crystals were synthesized by molten salt method using CuS, FeS and SnS as raw materials and using CsCl as fluxing agent for the first time. The Cu2FeSnS4 single crystals were investigated by X-ray diffraction,
Raman, X-ray photoelectron spectroscopy and UV-vis absorbance spectroscopy. The results showed that the Cu2FeSnS4 single crystals were having stannite structure with an average size about 50–100 μm and the band gap was about 1.45 eV.
研究领域:
材料科学
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化学
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DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2024
·
IF 6
Niu Haiyue,Zhang Jianming,Zhang Chengcheng,Xin Xiaoting,Liu Daqun
The specific effects of minerals and bacteria in salt on fermented vegetables are unclear. In this study, four different salts were used for radish fermentation to investigate the key factor in salt affecting fermented radish and establish a correlation between the key factor and fermented radish flora. Radish salted with sea salt and well salt had better quality in both industry and laboratory, as reflected by its acidity, color, texture, and flavors. The minerals and halophilic bacteria present in salt can affect the quality of fermented radishes by altering the bacterial community. However, the correlation between minerals and halophilic bacteria remains unclear. The key factor associated to radish fermentation was the dominant halophilic microbes. Bacteria in mineral-rich salts affected radish more on day 35; Salinibacter, Desulfovermiculus, Aliifodinibius, and Halovibrio in salt affected Lactobacillus, Leuconostoc, and Vibrio in radish. In contrast, bacteria in refined salts affected radish more on day 14; Desulfovermiculus, Aliifodinibius, Halovibrio, and Tepidimonas in salt affected most bacteria in radish, particularly lactic acid bacteria (LAB). Key halophilic microbes was found to have a greater effect on fermented radish quality than salt composition. This study provides a theoretical basis for improving the quality and standardization of fermented radish.
研究领域:
食品科学
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微生物学
·
发酵技术
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高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2014
·Vol. 14
·期 9
·6934-6940
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IF 1.339
Shi Huajun,Xiao Xin,Zeng Lixuan,Zhang Qiuyun,Nan Junmin,Wang Lishi
Three-dimensional (3D) titanates hierarchical macro/nano-architectures constructed by one-dimensional (1D) nanobelts are successfully synthesized by a hydrothermal-calcining process using metal Ti particles as a precursor. Their morphology and structure are characterized, and their
photocatalytic reactivity to tetracycline hydrochloride (TC) is evaluated under visible-light irradiation. The results show that the 1D nanobelts are formed through hydrothermal reaction, and then those 1D nanobelts encircle the metal Ti particles precursor to form 3D macro/nano-architectures.
The products with different phase composition, from hydrated titanium oxides to sodium titanates, are obtained by increasing the post-calcining temperatures from 200 °C to 800 °C. The photocatalytic degradation of TC is observed for all samples under visible-light irradiation, and
the sample calcined at 600 °C achieves the best photocatalytic reactivity. The visible-light performance of as-synthesized catalysts is considered as a charge-transfer mechanism initiated by the photoexcitation of the surface-complex between TC molecules and titanates, and then followed
by the photosensitization mechanism. Two intermediates are identified in the photodegradation process using liquid chromatography combined with mass spectrometry. In addition, the as-synthesized titanates are stable and can be used repeatedly, showing their promising prospect in the practical
applications.
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
MAGNETIC RESONANCE IN CHEMISTRY
·
2017
·Vol. 56
·期 1
·37-45
·
IF 1.601
Chen Yu,Qian Zhang,Peng-yao Xu,Yin Bai,Wen-bin Shen,Bin Di,Meng-xiang Su
Quantitative nuclear magnetic resonance (qNMR) is a well-established technique in quantitative analysis. We presented a validated 1 H-qNMR method for assay of octreotide acetate, a kind of cyclic octopeptide. Deuterium oxide was used to remove the undesired exchangeable peaks, which was referred to as proton exchange, in order to make the quantitative signals isolated in the crowded spectrum of the peptide and ensure precise quantitative analysis. Gemcitabine hydrochloride was chosen as the suitable internal standard. Experimental conditions, including relaxation delay time, the numbers of scans, and pulse angle, were optimized first. Then method validation was carried out in terms of selectivity, stability, linearity, precision, and robustness. The assay result was compared with that by means of high performance liquid chromatography, which is provided by Chinese Pharmacopoeia. The statistical F test, Student's t test, and nonparametric test at 95% confidence level indicate that there was no significant difference between these two methods. qNMR is a simple and accurate quantitative tool with no need for specific corresponding reference standards. It has the potential of the quantitative analysis of other peptide drugs and standardization of the corresponding reference standards.
研究领域:
药物分析
·
生物化学
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DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2016
·
IF 3.014
Jinglian Yang,Jing Hu,Yuhui Zheng,Jinwei Gao,Chunyu Wu,Shuilian Yan,Lu Zhang,Qianming Wang
Reactions under hydrothermal conditions between lanthanide ions and different loading hosts (phosphates, vanadates and molybdates) lead to a group of rare earth-based solid state materials. As for the cases of phosphates and vanadates, a novel self-sacrificing template route with ultrasonic assisted hydrothermal treatments has been utilized. The emission intensities of building blocks derived from yttrium (YPO 4 :Eu 3+ and YVO 4 :Eu 3+ ) were significantly stronger than their counterparts (GdPO 4 :Eu 3+ and GdVO 4 :Eu 3+ ). Ultrasonic irradiation of reaction solution ahead of hydrothermal treatments would also improve their red luminescence. In the case of molybdates , red/green emissive phosphors (BaMoO 4 : Eu 3+ and BaMoO 4 : Tb 3+ ) were achieved in the presence of polyaspartic acid as the template. Their structures and photophysical features have been investigated in detail.
研究领域:
材料科学
·
光学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Chuanling Sun,Dajiang Mei,Jingli Xu,Yuandong Wu
Two new mixed bismuth (III) tellurite nitrate/sulfate, H[Bi 3 O(Te 3 O 9 )](NO 3 ) 2 and [Bi 2 (TeO 3 ) 2 ](SO 4 ) were synthesized under hydrothermal conditions. H[Bi 3 O(Te 3 O 9 )](NO 3 ) 2 crystallizes in the hexagonal space group P 6 ¯ 2 m (No. 189) with lattice parameters a = 9.8465(4), b = 9.8465(4), c = 4.1917(4) Å, V = 351.95(4) Å 3 , Z = 1, while [Bi 2 (TeO 3 ) 2 ](SO 4 ) crystallizes in the monoclinic space group C 2/ c (No. 15) with lattice parameters a = 15.7657(13), b = 7.4285(5), c = 8.0959(6) Å, β = 112.693(2) ° , V = 874.75(11) Å 3 , Z = 4. The structure of H[Bi 3 O(Te 3 O 9 )](NO 3 ) 2 features one-dimensional cationic 1 ∞ [Bi 3 O(Te 3 O 9 )] + chains along c axis, which are composed of [BiO 7 ] and [TeO 4 ] polyhedra by sharing corners and edges, whereas [Bi 2 (TeO 3 ) 2 ](SO 4 ) possesses a new three-dimensional framework consisting of two-dimensional zigzag layers of 2 ∞ [Bi 2 (TeO 3 ) 2 ] 2+ that are linked by SO 4 2- anions. Title compounds were characterized by single-crystal X-ray diffraction, powder X-ray diffraction, Raman spectra, infrared spectra and solid state UV-vis-NIR diffuse reflectance spectroscopy .
研究领域:
化学
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材料科学
·
晶体学
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DOI
高影响因子
RSC Advances
·
2023
·Vol. 13
·期 24
·16536-16548
·
IF 3.9
Hai-Yang Zhu,Ying-Hui Liu,Hai-Yun Sun,Dan-Dan Cao,Yu-Chuan Li,Si-Ping Pang
The development of environment-friendly and non-toxic green energetic materials and their safe, environmentally friendly, and economical production is very important to the national economy and national security. As an innovative, efficient, and environmentally friendly energetic material, the preferred preparation method of ammonium dinitramide (ADN) is the nitro-sulfur mixed acid method, which has the advantages of high yield, simple method, and easy access to raw materials. However, the large number of inorganic salt ions introduced by this method limits the large-scale production of ADN. Nanofiltration (NF) has been widely used in various industrial processes as a separation method with high separation efficiency and simple operation. In this study, NF was used for the desalination and purification of ADN synthesized by the mixed acid method. The effects of NF types, operation process (pressure, temperature, and feed solution concentration) on desalination efficiency, and membrane flux during purification were examined. The results showed that 600D NF could achieve the efficient desalination and purification of ADN. It was verified that the highest desalination and purification efficiency was achieved at 2 MPa pressure, 25 °C, and 1 time dilution of the feed solution, and the membrane flux of the desalination and purification process was stable. Under the optimized process conditions, the removal rate of inorganic salts and other impurities reached 99% (which can be recycled), the purity of ADN reached 99.8%, and the recovery rate reached 99%. This process has the potential for the large-scale production of ADN and provides a new process for the safe, efficient, and cheap preparation of energetic materials.
研究领域:
化学工程
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材料科学
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DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2023
·
IF 6
Yuanting Wu,JinRong Wang,Bailin Zeng,Mengyao Guan,Lihui Guo
Heterostructures with intimate contact interfaces and well-matched band structure construction are considered to be one the effective methods to promote photogenerated carrier separation and photocatalytic semiconductor activity. Herein, a simple joint post-modification method of hydrochloric acid and dopamine hydrochloride mediated under acidic conditions was proposed. Bi 12 SiO 20 -Bi 2 O 2 SiO 3 -BiOCl curved microflower photocatalyst with double heterojunction and large specific surface area was prepared. Hydrochloric acid and dopamine hydrochloride act as reactants and halogen sources in the composite photocatalyst, and their amount precisely control the surface morphology and the thickness of nanosheets. Benefiting from the synergistic effect of morphology regulation and interface optimization, the DBSO-10 not only changes its morphology from the original bone rod structure to the curved microflower structure with a large specific surface area, but also formes a double type-II heterostructure with tight interface connection. And the new microflower photocatalyst can achieve a degradation rate of 99.7 % in 20 min, which is 40 times higher than that of Bi 12 SiO 20 -Bi 2 O 2 SiO 3 photocatalyst. Notably, the material can also effectively degrade five catalysts including dyes and antibiotics within 1 h.
研究领域:
材料科学
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环境科学
·
化学
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DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Shifeng Li,Feng Lu,Shuhua Yao,Shuyan Zang
The mesoporous goethite synthesized by the hydrothermal method was employed to remove selenate (Se(VI)) and selenite (Se(IV)) from wastewater. The adsorption data of kinetics and isotherms were determined and fitted with different models, and the potential adsorption mechanism was discussed according to X-ray photoelectron spectroscopy (XPS) analysis. The maximum adsorption capacities of Se(IV) and Se(VI) on the mesoporous goethite are 71.07 and 21.07 mg/g at 25°C, respectively, which are about two orders of magnitude higher than the natural goethite. The XPS results revealed that the Se(IV) was adsorbed on the surface of the mesoporous by the formation of the inner-sphere complex, but the outer-sphere complexes are formed with Se(IV). The meso-porous goethite is expected to be a potential adsorbent for Se removal from industrial selenium- containing wastewater on a large scale for its properties of easy-preparation and less cost compared with classic nanomaterials.
研究领域:
环境科学
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材料科学
·
化学工程
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DOI
高影响因子
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2021
·Vol. 647
·期 12
·1269-1276
·
IF 1.492
Jiayuan Zhang,Xiao Zhao,Yuandong Wu,Dajiang Mei,Shaoguo Wen,Thomas Doert
Two new antimony (III) tellurite sulfates [Sb 2 (TeO 4 )](SO 4 ) ( 1 ) and [Sb 2 (TeO 3 ) 2 ](SO 4 ) ( 2 ) were successfully synthesized through a conventional hydrothermal method and their crystal structures were determined by X-ray single crystal analysis. [Sb 2 (TeO 4 )](SO 4 ) crystallizes in the triclinic space group P ī (No. 2) with lattice parameters a=5.572(2), b=7.247(2), c=9.540(3) Å, V=358.5(2) Å 3 , and Z=2, while [Sb 2 (TeO 3 ) 2 ](SO 4 ) crystallizes in the orthorhombic space group Pbca (No. 61) with lattice parameters a=7.368(2), b=14.571(3), c=16.521(3) Å, V=1773.7(6) Å 3 , and Z=8. The structure of [Sb 2 (TeO 4 )](SO 4 ) features a three-dimensional framework, composed of [SbO 4 ] trigonal bipyramids and [TeO 4 ] polyhedra to form a cationic 2 ∞[Sb 2 (TeO 4 )] 2+ corrugated cationic layers along [100], linked by SO 4 2− anions. [Sb 2 (TeO 3 ) 2 ](SO 4 ) forms a three-dimensional framework consisting of two dimensional wrinkled layers of 2 ∞[Sb 2 (TeO 3 ) 2 ] 2+ that are linked by SO 4 2− anions. The band gaps of 4.16 eV and 3.72 eV for [Sb 2 (TeO 4 )](SO 4 ) and [Sb 2 (TeO 3 ) 2 ](SO 4 ) respectively are estimated from the solid state UV-vis-NIR diffuse reflectance spectra. Thermal analysis indicated that both compounds are thermally stable up to about 500 °C. The electrochemical specific capacity of [Sb 2 (TeO 4 )](SO 4 ) was determined to 245 mA h g −1 on the first cycle in a Li-ion half-cell, the capacity remains at about 106 mA h g −1 after 500 cycles.
研究领域:
材料科学
·
化学
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DOI
高影响因子
WATER RESEARCH
·
2023
·
IF 12.8
Yifei Zhang,Zhechao Hua,Xuewen Zhang,Kaiheng Guo,Jingyun Fang
Solar photolysis of free chlorine (solar/chlorine) in bromide-containing water occurs under various scenarios, such as chlorinated reservoirs and outdoor swimming pools, and the formation of chlorate and bromate is an important issue in the system. We reported unexpected trends for the formation of chlorate and bromate in the solar/chlorine system. Excess chlorine inhibited the formation of bromate, i.e., increasing chlorine dosages from 50 to 100 μM reduced the bromate yield from 6.4 to 1.2 μM in solar/chlorine at 50 μM bromide and pH 7. The yield of bromate in solar/chlorine at 100 μM chlorine and 50 μM bromide in 240 min was 18.8% of that at 50 μM bromine only. The underlying mechanism was that HOCl can react with bromite (BrO 2 − ) to form HOClOBrO − , whose multi-step transformation finally formed chlorate as the major product and bromate as the minor product. This reaction overwhelmed the oxidation of bromite to form bromate by reactive species, such as • OH, BrO • and ozone. On the other hand, the presence of bromide greatly enhanced the formation of chlorate. Increasing bromide concentrations from 0 to 50 μM enhanced the chlorate yields from 2.2 to 7.0 μM at 100 μM chlorine. The absorbance of bromine was higher than that of chlorine, thus the photolysis of bromine formed higher levels of bromite at higher bromide concentrations. Then, bromite rapidly reacted with HOCl to form HOClOBrO − and it further transformed to chlorate. Additionally, 1 mg L − 1 NOM had a negligible effect on bromate yields in solar/chlorine at 50 μM bromide, 100 μM chlorine and pH 7. This study demonstrated a new pathway of chlorate and bromate formation in the solar/chlorine system with bromide.
研究领域:
环境科学
·
化学
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Wenxia Dong,Zhongping Li,Wen Wen,Bin Liu,Guangming Wen
Nanomaterial selection is critical for photoelectrochemical (PEC) sensing. In this report, a novel cathodic photoelectrochemical (PEC) strategy was proposed for the detection of doxorubicin hydrochloride (Dox) and gentamicin sulfate (CN). The photocathode was synthesized by noncovalently coupling cadmium sulfide (CdS) to the porphyrin-derived metal–organic framework (CdS@PCN-224). This type of assembly created a pleasant interface for the combination of doxorubicin hydrochloride and gentamicin sulfate, resulting in a good CdS@PCN-224 donor–acceptor system. When compared to a single optoelectronic material, its photocurrent is enhanced by unprecedented nine times. This research could pave the way for the realization of PCN-224’s enormous potential in PEC sensing.
研究领域:
材料科学
·
分析化学
·
医学检测
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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）