JOURNAL OF NANOPARTICLE RESEARCH
·
2024
·Vol. 26
·期 9
·1-15
·
IF 2.1
Yin Yanbing,Zhang Xueli,Jiang Bei,Wang Zhou,Feng Yongming,Li Xueying
Developing efficient catalysts for visible light reactions is vital in the field of photocatalysis. This study focuses on the synthesis of novel ternary composites (α-DMACoPc/TiO 2 /MIL-101 (Fe)) by leveraging the excellent adsorption properties of MIL-101 (Fe), the photosensitizing capabilities of phthalocyanine, and the photocatalytic potential of TiO 2 . The nanocomposites’ structural and optical attributes were thoroughly analyzed. X-ray powder diffraction (XRD) was utilized to showcase the crystalline nature of the composites. Furthermore, Fourier transform infrared (FT-IR) studies confirmed the formation of ternary nanocomposites. Optical absorption investigations demonstrated the tuning of the optical band gap from the UV to the visible range. The results indicated that nearly 94% of the organic material was decomposed after 150 min of exposure to simulated sunlight from a xenon lamp. This high efficiency can be attributed to the synergistic interaction among the composites, enhancing light absorption. The composite’s robust stability was evidenced through cyclic tests. Valuable information was provided to advance the design and synthesis of photocatalysts consisting of metal–organic frameworks synergized with semiconductors. Exploring the possibility of mesoporous materials was based on MOFs for photodegradation of organic pollutants. The photocatalytic degradation of organic pollutants by MOFs mesoporous materials was also investigated. The potential of composite materials in the field of dye degradation of industrial waste is confirmed. The good recycling photocatalytic reusability indicates the promising application of this photocatalyst. Graphical Abstract
研究领域:
材料科学
·
环境科学
·
光催化技术
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2013
·Vol. 5
·期 17
·8114-8121
·
IF 6.233
Wei Zhang,Lanlan Zhai,Na He,Chao Zou,Xiaozhen Geng,Lujun Cheng,Youqing Dong,Shaoming Huang
Cu2ZnSnS4 is a promising solar absorbing material in solar cells due to its high absorption coefficient and abundance on earth. We have demonstrated that wurtzite Cu2ZnSnS4 nanoleaves could be synthesized through a facile solution-based method. Detailed investigation of the growth process indicates that α-Cu2S nanocrystals are first formed and then serve as a catalyst to introduce the Cu, Zn, and Sn species into the nanoleaf growth for fast ionic conduction. The structure of the as-synthesized nanoleaves is characterized by powder X-ray diffraction, high-resolution transmission electron microscopy, fast Fourier transform, and energy dispersive X-ray spectroscopy mapping. Photoresponses of Cu2ZnSnS4 nanoleaves are evaluated by I–V curves of a Cu2ZnSnS4 nanoleaf film. It is believed that the enhancement of the photoresponse current of the Cu2ZnSnS4 nanoleaf film can be attributed to fast carrier transport due to the single crystalline nature and enhanced light absorption resulting from larger absorption areas of the Cu2ZnSnS4 nanoleaves.
研究领域:
材料科学
·
太阳能电池研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2015
·Vol. 78
·期 2
·293-298
·
IF 1.532
Cui Hongtao,Ma Wenle,Wang Li,Xue Junying
Abstract
In this work, α-Co(OH) 2 monolayer nanosheets were prepared by an intercalation agent-free route utilizing a precipitation reaction between epoxide and aqueous complexes of cobalt ions ([Co(H 2 O) 6 ] 2+ ). The protonation and the following ring-opening reaction of epoxide promoted the hydrolysis of [Co(H 2 O) 6 ] 2+ , leading to the formation of α-Co(OH) 2 nanosheets. The obtained nanosheets were then exfoliated to monolayer nanosheets in formamide under ultrasonic vibration. A possible exfoliation mechanism is proposed for the exfoliating process of α-Co(OH) 2 nanosheets. The water molecules incorporated in the layered structure of α-Co(OH) 2 are considered to be the key medium for the layer exfoliation. It seems that the water molecules coordinated with the cobalt ions weakened the interlayer interaction. Therefore, the extraction of water molecules by formamide readily broke the interlayer connection in α-Co(OH) 2 , resulting in the exfoliation of nanosheets. Graphical Abstract α-Co(OH) 2 monolayer nanosheets were prepared by an intercalation agent-free route utilizing a precipitation reaction between epoxide and aqueous complexes of cobalt ions ([Co(H 2 O) 6 ] 2+ ).
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2013
·Vol. 3
·期 10
·2620-2626
·
IF 3.753
Chunhui Chen,Ensheng Zhan,Na Ta,Yong Li,Wenjie Shen
Pd nanocubes of 6–19 nm in size were synthesized using a seeded growth method and examined for enantioselective hydrogenation of α,β-unsaturated carboxylic acids. It was found that the Pd nanocubes had two types of active sites on the planes and at the edges, respectively. Small nanocubes having a higher edge/plane ratio were more active in enantioselective hydrogenation of α,β-unsaturated carboxylic acids, but afforded a lower enantioselectivity because their sharp edges could not offer stable adsorption of the chiral modifier and the reaction intermediates. In contrast, large nanocubes with a higher fraction of flat planes provided a higher enantioselectivity but a much lower activity.
研究领域:
化学
·
纳米材料科学
·
催化反应
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2014
·Vol. 132
·期 16
·
IF 1.64
Li Li,Li-Ru Xia,He-Ye Wang,Xiao-Dong Bi
Bisphenol A based epoxy acrylate (BABEA), a commercial UV-curable material, was introduced as a crosslinker for the fabrication of an epoxy-functionalized monolithic polymer array through UV-initiated copolymerization with glycidyl methacrylate as the functional monomer and poly(ethylene glycol) 200 as the porogen. Scanning electron microscopy images showed that the monolithic poly(bisphenol A based epoxy acrylate- co -glycidyl methacrylate) [poly(BABEA- co -GMA)] exhibited a well-controlled skeletal and well-distributed porous structure. The α-fetoprotein (AFP) immunoaffinity monolithic polymer array prepared by the immobilization of AFP on epoxy-functionalized monolithic arrays was used as an immunosensor for chemiluminescent AFP detection. X-ray photoelectron spectroscopy results indicate that the AFP antibody was successfully immobilized on the monolithic poly(BABEA- co -GMA) array. With a noncompetitive immune-response format, the proposed AFP immunoaffinity array was demonstrated as a low-cost, flexible, homogeneous, and stable array for AFP detection. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 41792.
研究领域:
生物医学工程
·
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS TODAY
·
2015
·
IF 3.893
Faheem Nawaz,Yongbing Xie,Hongbin Cao,Jiadong Xiao,YueqiuWang,Xihua Zhang,Mingjie Li,Feng Duan
Two series of α-MnO 2 materials were prepared via a similar method with surfactant cetyltrimethylammonium bromide (CTAB) and sodium dodecyl benzene sulfate (SDBS). The surfactants work both as shape directing agent and reduction initiator. The α-MnO 2 synthesized with 0.2 M of CTAB showed a mesoporous structure with high surface area of 387.7 m 2 /g. It is very active in catalytic ozonation of 4-nitrophenol (4-NP) and total organic carbon removal, with higher catalytic stability than commercial MnO 2 . Using tert -butanol and p -benzoquinone as scavengers of different oxidative species, we found that superoxide radicals, rather than hydroxyl radicals, were mainly responsible for the degradation of 4-NP.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
Food Science & Nutrition
·
2020
·Vol. 9
·期 1
·290-302
·
IF 1.797
Lili Zhang,Ying Sun,Dandan Pu,Yuyu Zhang,Baoguo Sun,Zhiyao Zhao
As a potential health hazard, α-dicarbonyl compounds have been detected in the thermally processed foods. In order to investigate the formation kinetics of α-dicarbonyl compounds, liquid chromatography-electrospray tandem mass spectrometry was employed to determine the content of α-dicarbonyl compounds in glucose-only and glucose-glutamic acid (glucose-Glu) thermal reaction models. The 3-deoxyglucosone content was significantly higher than 6 α-dicarbonyl compounds at 90–110℃, 0–6 hr in the two tested systems. The glutamic acid promoted the content accumulation of 1-deoxyglucosone, diacetyl, methylglyoxal, and glyoxal, whereas inhibited the content of 3-deoxyglucosone and 3,4-dideoxyglucosone. Three-fifths of the tested compounds content increased linearly with time increasing, but in glucose-only system, the 1-deoxyglucosone content increased logarithmically at 95–110℃ over reaction time. The formation of glucose (100–110℃, glucose-only and glucose-Glu), 5-hydroxymethylfurfural (100–110℃, glucose-only), 1-deoxyglucose (105–110℃, glucose-Glu), 3,4-dideoxyglucosone (110℃, glucose-Glu), glyoxal (95–110℃, glucose-Glu) and diacetyl (90–95℃, glucose-Glu) could be well fitted by exponential equation. Shortening the heating time and reducing heating temperature (except glyoxal in glucose-only system) were the effective methods to decrease α-dicarbonyl compounds content in the two tested systems. Additionally, high temperature could also reduce α-dicarbonyl compounds content, such as 3-deoxyglucosone (≥110℃, glucose-only), 1-deoxyglucosone (≥110℃, glucose-only), glucosone (≥110℃, glucose-only; ≥100℃, glucose-Glu), methyloxyl (≥110℃, glucose-only; ≥100℃, glucose-Glu), diacetyl (≥110℃, glucose-only), and glyoxal (≥100℃, glucose-Glu).
研究领域:
食品科学
·
生物化学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Shakeel Abbas,Tanveer Hussain Bokhari,Mudasir Abbas,Zahid Abbas,Atia Khalid,Saqib Javed,Amina Zafar,Naeem Ahmad,Shafqat Karim,Athar Javed,Ting Zhu,Amjad Nisar,Mashkoor Ahmad
Electrodes material and electrolytes play an important role in defining energy storage performance of supercapacitors. Therefore, the selection of suitable electrode material as well as electrolyte is very crucial. In this work, hematite α-Fe 2 O 3 nanoparticles supported rGO structure is synthesized by a low cost co-precipitation approach. The developed electrode is investigated for supercapacitor in 1.0 M KOH, Na 2 SO 4 and aqueous hybrid electrolyte. It is found that the fabricated (α-Fe 2 O 3 /rGO) electrode delivers an improved specific capacitance of 1272 F g −1 at 1 A g −1 in hybrid electrolyte as compare to 700 F g −1 for KOH and 978 F g −1 for Na 2 SO 4 electrolyte. Moreover, the electrode shows excellent cyclic stability in contrast to the pristine α-Fe2O3 electrode. Interestingly, the assembled prototype asymmetric coin cell supercapacitor (α-Fe 2 O 3 /rGO//AC) device achieved a specific capacitance of 152 F g −1 at 1 A g −1 and energy density of 47.1 Wh kg −1 at a power density of 245.5 W kg −1 . Moreover, the device keeps 94% capacitance retention up to 8,000 cycles at 6 A g −1 . The improved performance is attributing to the increase in conductivity and charge kinetics in hybrid electrolyte. It is suggested that α-Fe 2 O 3 /rGO structure is a useful material for supercapacitors in the presence of hybrid electrolyte.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Journal of Functional Foods
·
2020
·
IF 3.701
Rong Xu,Yun-Ge Bu,Meng-Ling Zhao,Rong Tao,Jun Luo,Yi Li
The tender shoots of Chinese toon are one of the most popular vegetables, although the chemical basis of its edible value is still unknown. Guided by antioxidant and α-glucosidase inhibitory activities, the main constituents and their function and content in Chinese toon buds were studied. Six main flavonoid glycosides based on quercetin ( 1 – 3 ) and kaempferol ( 4 – 6 ), kaempferol ( 7 ), and a methyl gallate ( 8 ) with antioxidant and α-glucosidase inhibition activities were isolated and identified using chromatographic and spectrometric techniques and methods. The contents of the seven main flavonoids determined by high-performance liquid chromatography method were ranged from 0.5 to 5.1 mg/g, and the total flavonoids content measured by ultraviolet spectrophotometry was 17.1 mg rutin equivalent/g dry weight, which was higher than that found in 11 other common vegetables. Correlating the activities and contents of these flavonoids, Chinese toon bud is a potentially rich source of dietary antioxidants and hypoglycemics.
研究领域:
植物化学
·
食品科学
·
药理学
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Zhilan Du,Dashuang Wang,Haoyu Fu,Xudong Liu,Shuang Yi,Jinsong Rao,Xiaoying Liu,Yuxin Zhang
High-performance microwave absorbers are mainly based on reasonable microstructural designs and composition regulation. Herein, a broadband microwave absorber was obtained by a two-step hydrothermal method. Notably, the transformation of MnO2 nanosheets to α-FeOOH nanorods was successfully realized on carbon aerogel powder, and the microwave absorption effect of the absorber can be adjusted in three-band absorption (S, X, and Ku bands) by changing the thickness of the absorber. The results show that the minimum reflection loss (RLmin) of the α-FeOOH/CA composite is −38 dB at a frequency of 13.28 GHz, and the corresponding effective absorption bandwidth of less than −10 dB could completely cover the Ku band. This study provides a new idea for designing carbon aerogel powder microwave absorbers reasonably and for adjusting impedance effectively.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2019
·
IF 6.97
Wenwen Zhang,Boyu Zheng,Xiaoxiao Jin,Heyong Cheng,Jinhua Liu
Epoxy compounds are an important class of organic intermediates that are generally used to synthesize many important compounds and natural products. Herein, we carried out two-phase epoxidation of α,β-unsaturated olefins in microdroplets without any catalysts, where all the yield measurements were made upon microdroplet collection using high performance liquid chromatography. The epoxidation reaction can only take place under thermal irradiation both in microdroplets and in bulk phase, and an optimal yield was obtained in microdroplets at a reaction temperature of 35 °C. The epoxidation yield in microdroplets (85%) was superior over that in bulk phase (13%). In addition, the microdroplet epoxidation also produced configuration-selective epoxy compounds (only E-epoxides from the corresponding E-olefins and only Z-epoxides from the corresponding Z-olefins) compared to more byproducts (E-/Z-olefins and E-/Z-epoxides obtained from either E-olefins or Z-olefins) in bulk phase. It was attributed to E/Z configuration conversion under light irradiation in bulk phase, whereas such conversion was trivial in microdroplets. We also found that the epoxidation yields of trans-chalcones into their corresponding E-epoxides were apparently higher than cis-chalcones.
研究领域:
有机化学
·
绿色化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ORGANIC CHEMISTRY
·
2019
·
IF 4.745
Jing Zhu,Rui Li,Yan Su,Peiming Gu
Rh-catalyzed intramolecular condensation of the benzyl azides with α-aryldiazoesters was explored. The reaction proceeded through the nucleophilic attack of the organic azide onto a rhodium carbenoid, while releasing nitrogen gas, affording the α-imino esters as the primary product. Tautomerization of the imino esters efficiently gave 13 desired isoindoles with good to excellent yields.
研究领域:
有机化学
·
合成化学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）