|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | One-step fabrication of mesoporous sulfur-doped carbon nitride for highly selective photocatalytic transformation of native lignin to monophenolic compounds显示文摘Photocatalytic selective transform native lignin into valuable chemicals is an attractive but challenging task.Herein,we report a mesoporous sulfur-doped carbon nitride(MSCN-0.5)which is prepared by a facile one-step thermal condensation strategy.It is highly active and selective for the cleavage Cα-Cβbond inβ-O-4 lignin model compound under visible light radiation at room temperature,achieving 99%substrate conversion and 98%Cα-Cβbond cleavage selectivity.Mechanistic studies revealed that the Cβ-H bond of lignin model compounds activated by holes and generate key Cβradical intermediates,further induced the Cα-Cβbond cleavage by superoxide anion radicals(·O2-)to produce aromatic oxygenates.Waste Camellia oleifera shell(WCOS)was taken as a representative to further understand the reaction mechanisms on native lignin.33.2 mg of monophenolic compounds(Vanillin accounted for 22%and Syringaldehyde for 34%)can be obtained by each gram of WCOS lignin,which is 2.5 times as that of the pristine carbon nitride.The present work offers useful guidance for designing metal-free heterogeneous photocatalysts for Cα-Cβbond cleavage to harvest monophenolic compounds. | Conghao Ku Huiqin Guo Kexin Li Qiong Wu Liushui Yan | 2023 | Chinese Chemical Letters2023，34，1： | 1 |
| 2 | Molecular recognition between 4aS/R-galanthamine diastereoisomers and β- cyclodextrin显示文摘 | Ming Sun Xiaohong Liu Liushui Yan | 2003 | J Mol Model2003，9，6： | 1 |
| 3 | Preparation of graphene/TiO 2 composites by nonionic surfactant strategy and their simulated sunlight and visible light photocatalytic activity towards representative aqueous POPs degradation显示文摘 | Kexin Li Jingjing Xiong Tong Chen Liushui Yan Yuhua Dai Dongyang Song Ying Lv Zhenxing Zeng | 2013 | Journal of Hazardous Materials2013，，： | 1 |
| 4 | Electroanalysis of bisphenol A at a multiwalled carbon nanotubes-gold nanoparticles modified glassy carbon electrode显示文摘 | TU Xinman YAN Liushui LUO Xubiao | 2009 | Electroanalysis2009，21，22： | 1 |
| 5 | Electroanalysis of bisphenol A at a multiwalled carbon nanotubes-gold nanoparticles modified glassy carbon electrode 显示文摘 | Xinman Tu Liushui Yan Xubiao Luo etal | 2009 | Electroanalysis2009，21，22： | 1 |
| 6 | Synthesis of mesoporous grapheme and tourmaline co-doped titania composites and their photocatalytic activity towards organic pollutant degradation and eutrophic water treatment显示文摘 | LI Kexin CHEN Tong YAN Liushui | 2012 | Catalysis Communications2012，28，5： | 1 |
| 7 | Resonance Rayleigh scattering spectral method for determination of urinary 8-hydroxy- 2'-deoxyguanosine using gold nanoparticles as probe显示文摘 | GUO Huiqin XUE Kunpeng YAN Liushui | 2012 | Sensors and Actuators B: Chemical2012，171，： | 1 |
| 8 | Effect of static magnetic field on activity of immobilized α-amylase显示文摘BIOLOGICAL effect of magnetic field is one of the three major subjects of contemporary biomagnetism, and is also the basis of applied biomagnetism. In order to explore magnetic biological effects, the influence of various sorts of magnetic field on many living systems as well as their different constructural levels has been extensively studied. However, only a few studies with in vitro enzyme have been reported, and few researches concerning the influence of magnetic field on immobilized enzyme reactions have been published. This note describes | YAN Liushui, ZHU Yuanbao, HE-Shuang’e and CAO Zhixiang1 Department of Chemical Engineering, Nanchang Institute of Aeronautical Technology, Nanchang 330034, China 2. Department of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China | 1997 | Chinese Science Bulletin1997，42，2： | 0 |
| 9 | Fabrication of biobased heterogeneous solid Br?nsted acid catalysts and their application on the synthesis of liquid biofuel 5-ethoxymethylfurfural from fructose显示文摘A series of biobased heterogeneous solid Br?nsted acid catalysts with perfect spherical microstructures are successfully fabricated directly from waste Camellia oleifera shells by a simple hydrothermal carbonization-annealing-sulfonation process. 350℃ low temperature annealing process helps to increase the activity of the catalyst due to the simultaneous maintenance of the spherical microstructure and aromatic carbon framework. As a renewable catalyst with low cost, the as-prepared materials are successfully applied on the synthesis of green renewable liquid biofuel 5-ethoxymethylfurfural(EMF) directly from fructose. In the catalytic test, the influences of reaction time and temperature, fructose concentration, and adding amount of the catalyst on the yield of EMF are investigated systematically. As a result, the optimal reaction temperature is 100℃, the EMF yield monotonically increases with prolonging the reaction time from 3 to 24 h, the optimal fructose concentration is0.5 mmol, and the EMF yield gradually increases with increasing the adding amount of the catalyst from 50 to 150 mg. In addition, the asprepared catalysts exhibit considerably high stability in the current EMF synthesis system, and they can maintain a similar level of reactivity after four catalytic cycles. | Yingying Wen Zhou Yu Kexin Li Huiqin Guo Yuhua Dai Liushui Yan | 2018 | Green Energy & Environment2018，3，4： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员