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visible light induced tandem reactions:An efficient one pot strategy for constructing quinazolinones using in-situ formed aldehydes under photocatalyst-free and room-temperature conditions

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Chinese Chemical Letters 2021年第4期32卷 1427-1431页

作者： Zongbo Xie Jin Lan Haibo Zhu Gaoyi Lei Guofang Jiang Zhanggao Le Jiangxi Province Key Laboratory of Synthetic Chemistry School of ChemistryBiology and Material ScienceEast China University of TechnologyNanchang 330013China

A facile tandem route has been developed for constructing quinazolinones from various aminobenzamides and in-situ generated *** light was found to play a dual role:first oxidizes the alcohol to the aldehyde and then facilitates its cyclization with o-substituted ***,alcohols are perfe ct alternatives to aldehydes because they are greene r,more available,more economical,more stable,and less toxic tha n *** first reaction step continuously provides material for the second step,which effectively reduces loss through volatilization,oxidation,and polymerization of the aldehyde,while avoiding its toxicity.A variety of quinazolinones can be prepared in the presence of visible light without any additional *** developed synthesis protocol proceeds with the merits of mild conditions,broad substrate scope,operational simplicity,a nd high atom efficiency,with an eco-energy source under metal-free,photocatalyst-free,and ambient conditions.

关键词： visible light Photocatalyst-free In-situ formed acetaldehyde One pot tandem reaction Quinazolinones Room temperature

visible light-assisted peroxydisulfate activation via hollow copper tungstate spheres for removal of antibiotic sulfamethoxazole

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Chinese Chemical Letters 2020年第10期31卷 2721-2724页

作者： Minxian Zhang Jie He Yibo Chen Pei-Yu Liao Zhao-Qing Liu Mingshan Zhu School of Environment Jinan UniversityGuangzhou 510632China School of Chemistry and Chemical Engineering Guangzhou Key Laboratory for Clean Energy and MaterialsGuangzhou UniversityGuangzhou 510006China Department of Chemistry University of CaliforniaRiversideCA 92521United States

The contamination of antibiotics in aqueous environment causes increasing concerns *** activation of peroxydisulfate(PDS)has been demonstrated as an efficient technology for re moval of contamination in ***,a hollow sphere of CuWO_(4)(h-CuWO_(4))was employed as a visible lightactivated photocatalyst for the activation of PDS,and following with high removal efficiency(98%)of antibiotic sulfamethoxazole(SMX).Under visible light irradiation,the degradation rate on hollow structures system is nearly 2 times higher than the traditional solid CuWO_(4) ***,the underlying mechanism and detailed pathway of SMX degradation were proposed based on density functional theory(DFT)calculations and liquid chromatography-mass spectrometry(LC-MS).This work provides a new feasible way for advanced oxidation processes to remove antibiotics SMX in heterogeneous system,and open up new application possibilities of CuWO_(4)-based materials.

关键词： Copper tungstate Peroxydisulfate Sulfamethoxazole visible light Hollow spheres

visible light induced oxidative coupling of purines with arenes

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Chinese Chemical Letters 2023年第3期34卷 313-316页

作者： Lamei Liao Dongen Lin Gary Histand Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510641China The International School of Advanced Materials School of Material Science and EngineeringSouth China University of TechnologyGuangzhou 510640China

The photocatalyzed synthesis of 9-arylpurines has been developed using 9H-purines and non-activated *** method is highly atom economical using an acridinium photocatalyst induced by visible light under air atmosphere ... 详细信息

关键词： visible light Photocatalysis Purine derivatives C–N bond formation Additive free

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visible light and base promoted O-H insertion/cyclization of para-quinone methides with aryl diazoacetates: An approach to 2,3-dihydrobenzofuran derivatives

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Chinese Chemical Letters 2021年第8期32卷 2577-2581页

作者： Shuangjing Zhou Baogui Cai Chuxia Hu Xu Cheng Lei Li Jun Xuan Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials College of Chemistry&Chemical EngineeringAnhui UniversityHefei 230601China Key Laboratory of Structure and Functional Regulation of Hybrid Materials(Anhui University) Ministry of EducationHefei 230601China Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province School of ScienceWestlake UniversityHangzhou 310024China

A visible light and base promoted O-H insertion/cyclization of para-quinone methides with aryl diazoacetates is developed. This one-pot two step reaction offers a mild and efficient approach for the synthesis of biolo... 详细信息

关键词： Carbene 2 3-Dihydrobenzofuran visible light para-Quinone methides Aryl diazoacetates

visible light induced four component reaction of styrene for the access of thiodifluoroesters

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Chinese Chemical Letters 2023年第9期34卷 143-146页

作者： Shao-Hui Yang Jing-Cheng Song Hao Yang Meng-Yu Zhou Ze-Hui Wei Jia-Hui Gao Dao-Qing Dong Zu-Li Wang College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural UniversityQingdao 266109China National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass Nanjing Forestry UniversityNanjing 210037China

The visible light induced multicomponent reaction of styrene,carbon disulfide,amine and ethyl difluorobromoacetate for the synthesis of thiodifluoroesters is *** developed protocol offers a facile and general route to access various valuable thiodifluoroesters in moderate to good *** mechanistic studies revealed that a radical process might be involved in this transformation.

关键词： Green chemistry visible light Thiodifluoroester Radical Multicomponent reaction

visible light induced cross-coupling synthesis of asymmetrical heterobiaryls using Pd/CeO_2 nanocomposite photocatalyst

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Chinese Chemical Letters 2018年第6期29卷 903-906页

作者： Yanqin Ge Pinhui Diao Chen Xu Nannan Zhang Cheng Guo College of Chemistry and Molecular Engineering Nanjing Tech University

A simple, mild and green approach has been developed for the synthesis of asymmetrical heterobiaryls under the irradiation of visible light without any oxidants and promoting reagents through using Pd/Ce O2 nanocomposite photocatalyst. This method can tolerate considerable functional groups such as electrondonating groups and electron-withdrawing groups through CààC cross-coupling. Moreover, we obtain the products with moderate yields in an efficient way. Finally, a plausible mechanism is proposed.

关键词： visible light Nanocomposite photocatalyst Pd/CeO2 C—C cross-coupling Mild condition

Tuning the selectivity of photoreduction of CO2 to syngas over Pd/layered double hydroxide nanosheets under visible light up to 600 nm

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Journal of Energy Chemistry 2020年第7期29卷 1-7,I0001页

作者： Xian Wang Zelin Wang Ya Bai Ling Tan Yanqi Xu Xiaojie Hao Jikang Wang Abdul Hanif Mahadi Yufei Zhao Lirong Zheng Yu-Fei Song State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical TechnologyBeijing 100029China Institute of High Energy Physics The Chinese Academy of SciencesBeijing 100049China Centre for Advanced Material and Energy Sciences Universiti Brunei DarussalamTungku LinkGadong BE1410Brunei Darussalam

Photocatalytic reduction of CO2 with H2 O to syngas is an effective way for producing high value-added chemical feedstocks such as methanol and light olefins in ***,the precise control of CO/H2 ratio from photocatalytic CO2 reduction reaction still poses a great challenge for the further ***,we prepared a series of highly efficient heterostructure based on highly dispersed palladium supported on ultrathin Co Al-layered double hydroxide(LDH).In conjunction with a Ru-complex sensitizer,the molar ratios of CO/H2 can be tuned from 1:0.74 to 1:3 under visible-light irradiation(λ>400 nm).More interestingly,the syngas can be obtained under light irradiation atλ>600 *** characterization and density functional theory calculations revealed that the remarkable catalytic activity can be due to the supported palladium,which improved the charge transfer ***,more H atoms were used to generate H2 on the supported palladium for further tunable CO/H2 *** work demonstrates a new strategy for harnessing abundant solar-energy to produce syngas from a CO2 feedstock.

关键词： Syngas CO2 reduction Layered double hydroxide visible light

In-situ constructing visible light CdS/Cd-MOF photocatalyst with enhanced photodegradation of methylene blue

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Particuology 2022年第10期20卷 111-122页

作者： Cheng Jing Yufei Zhang Junjie Zheng Shengsong Ge Jing Lin Duo Pan Nithesh Naik Zhanhu Guo College of Chemical and Biological Engineering Shandong University of Science and TechnologyQingdao 266590China School of Chemistry and Chemical Engineering Guangzhou UniversityGuangzhou 510006China Key Laboratory of Materials Processing and Mold(Zhengzhou University) Ministry of EducationNational Engineering Research Center for Advanced Department of Mechanical&Manufacturing Engineering Manipal Institute of TechnologyManipal Academy of Higher EducationManipal 576104KarnatakaIndia Integrated Composites Laboratory(ICL) Department of Chemical&Biomolecular EngineeringUniversity of TennesseeKnoxvilleTN 37996USA Taiyuan University of Science and Technology Taiyuan 030024China

Based on high specific surface area,high porosity of metal-organic frameworks(MOFs)and excellent vis-ible light response of CdS,the CdS/Cd-MOF nanocomposites were constructed by in-situ sulfurization to form CdS using Cd-MOF as precursor and the CdS loading was controlled by the dose of *** the irradiation of simulated sunlight,the degradation rate of methylene blue(MB)by 10mg MOF/CdS-6(mass ratio of MOF to thioacetamide is 6:1)was 91.9%in 100min,which was higher than that of pure Cd-MOF(62.3%)and pure CdS(67.5%).This is attributed to the larger specific surface area of the composite catalysts,which provides more active ***,the loading of CdS obvi-ously broadens the light response range of Cd-MOF and improves the utilization of visible *** Mott-Schottky model experiment shows that the formed type-Ⅱheterojunction between Cd-MOF and CdS can effectively inhibit the recombination of photogenerated electrons and ***,the photocurrent intensity of MOF/CdS-6 is 8 times and 2.5 times of that of pure Cd-MOF and *** addi-tion,MOF/CdS-6 showed good photocatalytic performance after five cycles,showing excellent stability and reusability.

关键词： MOFCdS Photocatalytic activity visible light Heterojunction Dye

Synthesis and photocatalytic activity of sulfate modified Nd-doped TiO_2 under visible light irradiation

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Journal of Rare Earths 2015年第5期33卷 491-497页

作者：孙东峰王凯徐志坚李锐星 Key Laboratory of Aerospace Materials and Performance (Ministry of Education) School of Materials Science and Engineering Beihang University College of Physical Science and Technology Dalian University

Nd-doped TiO2 （NT） photocatalysts with different contents of Nd were synthesized by sol-gel method. Then sulfated Nd-doped TiO2 （SNT） solid superacid photocatalysts were prepared by an incipient wetness impregnation technique. The photocata-lytic activity of catalysts was evaluated by the photodegradation of methylene blue under visible light irradiation. Analytical results demonstrated that Nd doping inhibited the growth of TiO2 crystallite and enhanced the thermal stability of anatase TiO2. Meanwhile, sulfate ions modification increased the specific surface area of samples. In addition, the optical absorption edges of SNT photocata-lysts shifted to longer wavelength compared with the undoped TiO2. Such SNT with Nd dosage of 0.25 at.%exhibited the highest photocatalytic activity in the degradation of methylene blue upon irradiation with visible light.

关键词： TiO2 solid superacid photocatalyst visible light methylene blue rare earths