CHEMISTRY LETTERS
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2022
·Vol. 51
·期 8
·844-847
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IF 1.715
Sun Kaixin,Xu Fan,Liu Jingji,Zhang Yajun,Fan Yiqiang
This study proposed a method for the rapid fabrication of paper-based microfluidic devices with a stencil film, which has wide application potential in analytical chemistry. Compared with the conventional approaches, the wax transfer and wax reflow was conducted simultaneously, resulting in a shorter fabrication duration (about 15 s per device) and ultra-low fabrication cost. For the demonstration of the proposed method, a quantitative analysis of amino acid content in tea was also conducted.
研究领域:
分析化学
·
生物医学工程
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高影响因子
CHEMISTRY LETTERS
·
2022
·Vol. 51
·期 4
·395-398
·
IF 1.715
Zhu Yue,Li Yue,Zhao Shipeng,Jing Ran,Zhang Heqian,Sun Daolai,Sato Satoshi
Hydrogenation of γ-valerolactone (GVL) to form 1,4-pentanediol (1,4-PDO) was performed over Co/ZrO2 catalysts with a Co metal loading of 15 wt. %. The calcination of Co/ZrO2 at high temperatures significantly promoted the catalytic activity irrespective of the decrease in the specific surface area. The 750 °C-calcined Co/ZrO2 with Co2+ species exhibited a high catalytic performance: a GVL conversion of 86.1% with a 1,4-PDO selectivity of 97.2% was achieved at 165 °C under 5 MPa H2 pressure.
研究领域:
化学工程
·
催化科学
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高影响因子
Chalcogenide Letters
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2026
·Vol. 23
·期 1
·
IF 1.6
Dehui Li,Yiming Guo,Tao He,Binbin Zhang,Haixia Yu,Lingkun Meng
Quinary Cu 3 FeInSnS 6 (CFITS) nanoplates were synthesized through a synergistic dual-cation substitution strategy using a hot-injection method, where oleylamine and 1-dodecanethiol served as coordinating ligands to guide two-dimensional growth. The nanocrystals were characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and absorption spectroscopy. Structural analysis confirms that the CFITS nanoplates crystallize in a phase-pure cubic zinc-blende structure (space group F -43 m) without detectable secondary phases. Optical measurements reveal that the nanoplates exhibit broad and intense visible-light absorption with a direct bandgap of 1.51 ± 0.03 eV, suitable for photovoltaic applications. Under standard AM 1.5 G illumination, the CFITS film shows a clear photoresponse with a light-to-dark current ratio (I light /I dark ) of 2.46, surpassing several related copper-based chalcogenides. This enhancement is attributed to the synergistic substitution of Fe 2+ and In 3+ , which is proposed to effectively suppress antisite defects and improve charge transport. Furthermore, the two-dimensional geometry endows the nanoplates with a unique electronic structure that mitigates carrier recombination and facilitates interfacial charge extraction. The solution-processable CFITS nanoplate films demonstrate good atmospheric stability, maintaining performance over 24 h. This work not only expands the family of multinary copper chalcogenides but also provides a feasible strategy for designing efficient, low-cost, and earth-abundant absorber materials for next-generation thin-film solar cells.
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高影响因子
CHEMISTRY LETTERS
·
2016
·Vol. 45
·期 9
·1051-1053
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IF 1.55
Wang Luanjiao,Rao Pinhua,Yao Wei,Zhang Wenqi
CuSn-codoped CdS (CdS:CuSn) quantum dots (QDs) with different Cu(I) and Sn(IV) doping levels have been successfully synthesized by a simple one-pot procedure. It was found that the doping ratio of Cu(I) and Sn(IV) in CdS QDs significantly affected the photoluminescence (PL) quantum yields (QYs), Stokes shifts, and emission window of as-prepared QDs. Compared to single Cu doping, CuSn codoping further significantly improved the PL QYs of as-prepared QDs (up to 24.6%). The CdS:CuSn QDs may be used as potential emitters in the PL industry.
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高影响因子
CHEMISTRY LETTERS
·
2015
·Vol. 44
·期 6
·743-745
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IF 1.23
Guan Dinghui,Han Lu,Wang Lulu,Song He,Chu Wenyi,Sun Zhizhong
The efficient, simple, and environment-friendly route of direct cyanation of picolinamides has been developed with nontoxic K4[Fe(CN)6] as the cyanide source through Pd-catalyzed C–H bond activation. A series of N-(naphthalene-1-yl)picolinamide derivatives were successfully transformed to the corresponding cyanation products. The cyanation mechanism has also been speculated.
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高影响因子
CHEMISTRY LETTERS
·
2014
·Vol. 43
·期 11
·1743-1745
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IF 1.3
Chai Mei-juan,Chen Xiang-min,Zhao Ye,Liu Rui-hong,Zhao Jun,Li Fa-tang
A facile synthesis route of pure FeAl2O4 via self-combustion of ionic liquid is developed using (C2H5)2NH·HCl and urea as cofuels. (C2H5)2NH·HCl not only is the source of cation in ionic liquid but also serves as fuel. The products possess pure hercynite phase, mesoporous structure, and large specific surface areas (89–185 m2 g−1). The visible-light photocatalytic activity of FeAl2O4 is also reported for the first time.
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高影响因子
CHEMISTRY LETTERS
·
2015
·Vol. 44
·期 10
·1422-1424
·
IF 1.23
Cao Renping,Luo Wenjie,Xiong Qingqiang,Jiang Shenhua,Luo Zhiyang,Fu Jingwei
Novel deep red phosphor Ba2GeO4:Mn4+ is synthesized and investigated. Emission peaking at 667 nm with excitation 290 nm is observed within the range 610–720 nm due to the 2E → 4A2 transition of Mn4+ ion. The optimal Mn4+ concentration is ca. 0.6 mol %. Luminous mechanism is explained by Tanabe–Sugano energy diagram and configurational coordinate diagram of Mn4+ ion. Ba2GeO4:Mn4+ phosphor can be used as deep red phosphor candidate for red LEDs used in indoor plant cultivation.
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高影响因子
CHEMISTRY LETTERS
·
2016
·Vol. 45
·期 7
·732-734
·
IF 1.55
Liu Xinyue,Dai Changqing,Wu Dengfeng,Fisher Adrian,Liu Zhiping,Cheng Daojian
PdAg bimetallic and PdAgCo trimetallic nanoparticles (NPs) are synthesized by a one-pot method in an organic solvent medium. Our results show that the catalytic activity of PdAgCo/C (1133.249 mA mgPd−1) for formic acid oxidation (FAO) is ca. 2.4 times larger than commercial Pd/C (483.563 mA mgPd−1) and 1.7 times larger than PdAg/C (680.741 mA mgPd−1). This study indicates that Co doping in PdAg bimetallic NPs can significantly improve its FAO activity. It is expected that the as-synthesized PdAgCo trimetallic NPs could be used as high-performance catalysts for direct formic acid fuel cells (DFAFCs).
研究领域:
材料科学
·
电化学
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高影响因子
CHEMISTRY LETTERS
·
2020
·Vol. 49
·期 6
·705-708
·
IF 1.361
Guan Hongtai,Ke Qiang,Lv Chao,Zeng Ning,Hu Cun,Wang Shuang,Ge Xingbo,Cai Jinguang
This study reports a facile strategy to prepare IrOx nanoparticle films on FTO substrates through simple spin-coating, annealing, and plasma treatment, which act as efficient electrocatalysts towards oxygen evolution reaction (OER). Typical amorphous IrOx nanoparticle film obtained by annealing at 300 °C and air-plasma treatment exhibits excellent OER performance in acidic electrolyte with a low overpotential of 290 mV at 10 mA cm−2, a Tafel slope of 55.4 mV dec−1, and an ultrahigh mass activity of 993 A g−1 at 1.55 V, which is among the best compared to the results reported in the literature.
研究领域:
材料科学
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电化学
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高影响因子
CHEMISTRY LETTERS
·
2020
·Vol. 50
·期 2
·386-388
·
IF 1.361
Wan Hongri,Ju Xinzhe,He Tiantian,Shen Xiran,Yu Haoren,Lu Yunlong,Li Jiangnan,Chen Teng
A superhydrophobic bilayer surface was created with a contact angle (CA) of 157.3 ± 1° and sliding angle (SA) of 2° ± 0.5° using a simple one-step solvothermal process. The bionic micro/nano structures are similar to the flower of a carnation and common sowthistle, which plays an important role in resisting corrosion. In addition, potentiodynamic polarization shows that the superhydrophobic bilayer surface has excellent corrosion resistance. This preparation is beneficial as it is simple to fabricate, low cost, is easily prepared across large areas, and has excellent corrosion resistance, amongst other benefits. It can effectively broaden the application of magnesium alloys and extend to other conductive metal materials.
研究领域:
材料科学
·
腐蚀与防护
·
纳米技术
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高影响因子
CHEMISTRY LETTERS
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2020
·Vol. 49
·期 11
·1421-1425
·
IF 1.361
Wang Shaohua,Zhang Hanying,Li Hao,Wu Ruijie,Hua Zhongqiu,Wu Yi,Tian Xuemin
WO3 nanosheets were synthesized by an acidification method and Cr was loaded on the surface of nanosheets via an impregnation procedure. The morphologies of pristine and Cr-loaded WO3 nanosheets were analyzed. Gas sensors based on pristine and Cr-loaded WO3 nanosheets were fabricated by a screen-printing technique and their sensing properties were also investigated. It was found that the catalytic modification of Cr can significantly improve the sensing performance of WO3 nanosheets to ammonia. In addition, the sensitization mechanism of Cr-loaded WO3 could be caused by the electrical sensitization effect and more stable product in the sensing processes to ammonia.
研究领域:
材料科学
·
化学传感器
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高影响因子
CHEMISTRY LETTERS
·
2019
·Vol. 48
·期 12
·1462-1464
·
IF 1.485
Sun Tuan-Wei,Zhu Ying-Jie
The aim of this study is to develop a simple method to grow an ultralong hydroxyapatite nanowire coating on a substrate. The ultralong hydroxyapatite nanowire coating on a glass substrate was synthesized by a one-step calcium oleate precursor solvothermal method. The formation process of the nanowire coating on the glass substrate was investigated, and the morphology, crystal phase and apatite-forming ability were studied. Moreover, the as-prepared hydroxyapatite nanowire coating exhibited excellent apatite-forming ability in simulated body fluid. The as-prepared ultralong hydroxyapatite nanowire coating has great potential for various biomedical applications.
研究领域:
生物材料学
·
医学工程
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DOI
高影响因子
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