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| 1 | Electrochemical Generation of Cubic Shaped Nano Zn_2SnO_4 Photocatalysts显示文摘In this contribution, an efficient and simple two-step hybrid electrochemical-thermal route was developed for the synthesis of cubic shaped Zn_2SnO_4 (ZTO) nanoparticles using aqueous sodium bicarbonate(NaHCO_3) and sodium stannate(Na_2SnO_3) electrolyte. The sacrificial Zn was used as anode and cathode in an undivided cell under galvanostatic mode at room temperature. The bath concentration and current density were respectively varied from 30 to 120 mmol and 0.05 to 1.5 A/dm^2. The electrochemically generated precursor was calcined for an hour at different range of temperature from 60 to 600. The crystallite sizes in the range of 24-53 nm were calculated based on Debye-Scherrer equation. Scanning electron microscope and transmission electron microscopy results reveal that all the particles have cubic morphology with diameter of40-50 nm. The as-prepared ZTO samples showed higher catalytic activity towards the degradation of methylene blue(MB) dye, and 90% degradation was found for the sample calcined at 600, which is greater than that of commercial TiO_2-P25 photocatalysts. The photodegradation efficiency of ZTO samples was found to be a function of exposure time and the dye solution p H value. These results indicate that the ZTO nanoparticles may be employed to remove dyes from wastewater. | Chandrappa K.Govindappa Venkatesha T.Venkatarangaiah Sharifah B.Abd Hamid | 2013 | Nano-Micro Letters2013，5，2： | 5 |
| 2 | 采用燃烧技术制备CuO纳米粒子:一种高效且环境友好的用于芳族醛合成芳族腈催化剂(英文)显示文摘CuO nanoparticles were synthesized using an energy-efficient and rapid solution combustion technique with malic acid employed as a fuel. The combustion-derived CuO nanoparticles were used as catalysts in a one-pot synthesis of aromatic nitriles from aromatic aldehydes and hydroxylamine hydrochloride. The catalyst was characterized by X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray analysis, transmission electron microscopy, and Brunauer-Emmett-Teller surface area analysis. The catalytic activity of the CuO nanoparticles in the synthesis of aromatic nitriles from aromatic aldehydes was evaluated. The present protocol offers the advantages of a clean reaction, simple methodology, short reaction duration (1-2 min), and high yield (85%-98%). The catalytic activity of the CuO nanoparticles was found to be higher than that of bulk CuO powder under the same conditions. The catalyst can also be recovered and reused up to four times with no significant loss of catalytic activity. The present approach is inexpensive and is a convenient technique suitable for industrial production of CuO nanoparticles and nitriles. | Belladamadu Siddappa ANANDAKUMAR Muthukur Bhojegowd Madhusudana REDDY Chikka Nagaiah THARAMANI Mohamed Afzal PASHA Gujjarahalli Thimmanna CHANDRAPPA | 2013 | 催化学报2013，34，4： | 4 |
| 3 | Solution combustion derived nanocrystalline Zn2SiO4:Mn phosphors: a spectroscopic view 显示文摘 | SREEKANTH CHAKRADHAR R P NAGABHUSHANA B M CHANDRAPPA G T | 2004 | J Chem Phys2004，121，10： | 1 |
| 4 | Studies on the synthesis of CdCO 3 nanowires and porous CdO powder显示文摘 | S. Ashoka P. Chithaiah G.T. Chandrappa | 2009 | Materials Letters2009，，： | 1 |
| 5 | Hy- drothermal synthesis of vanadium oxide nanotubes from V205 gels显示文摘 | Chandrappa G T Steunou N Cassaignon S | 2003 | Catalysis Today2003，78，1： | 1 |
| 6 | Effects of heavy metal contami- nation from anthropogenic sources on Dasarahallitank, India 显示文摘 | H Lokeshwari and G T Chandrappa | 2007 | Research and Management2007，12，： | 1 |
| 7 | Solution combustion derived nanoerystalline macro- porous wollastonite ceramics显示文摘 | Chakradhar R P S Nagabhushana B M Chandrappa G T etal | 2006 | Mater Chem Phys2006，95，1： | 1 |
| 8 | Materials chemistry: macroporous crystalline vanadium oxide foam 显示文摘 | Chandrappa G T Steunou N Livage J | 2002 | Nature2002，416，6882： | 1 |
| 9 | Synthesis of bismuth vanadate :its application in H 2 e-volution and sunlight - driven photodegradation 显示文摘 | Nagabhushana G P Nagaraju G Chandrappa G T | 2013 | Journal of Materials Chemistry A2013，1，2： | 1 |
| 10 | Increasing i-onic conduc-tivity and mechanical strength of a plastic electro-lyte by inclusion of a polymer显示文摘 | Monalisa P Chandrappa K G Bhattacharyya A J | 2008 | Electrochimica Acta2008，54，2： | 1 |
| 11 | Biodegradation of DDT by a Pseudomonas Species 显示文摘 | Chandrappa Kamanavalli Harichandra Ninnekar | 2004 | Current Microbiology2004，48，： | 1 |
| 12 | N - Methyl morpholine chlorochromate : An efficient reagent for oxidation of primary and secondary alcohols to carbonyl compounds 显示文摘 | CHANDRAPPA S SADASHIVA M P RANGAPPA K S | 2008 | Synth C ommu2008，38，15： | 1 |
| 13 | Combustion synthesis, characterization, sintering and microstructure of mullite-cordierite composites 显示文摘 | CHANDRAN R GOPI PATIL K C CHANDRAPPA G T | 1995 | J Mater Sci Lett1995，14，： | 1 |
| 14 | Studies on the synthe- sis of CdCOs nanowires and porous CdO powder显示文摘 | Ashoka S Chithaiah P Chandrappa G T | 2010 | Materials Letters2010，64，2： | 1 |
| 15 | 显示文摘 | Chandrappa G T Steunou N Cassaignon S | 2003 | Catalysis Today2003，78，： | 1 |
| 16 | Di- formylhydrazine as analytical reagent for spectrophoto- metric determination of iron(11) and iron(III) 显示文摘 | Nagabhushana B Chandrappa G Nagappa B | 2002 | Analyt- ical and Bioanalytical Chemistry2002，373，： | 1 |
| 17 | Case reports of patients with treatment - resistant schizophrenia and related psychotic disorders intolerant to elozapine responding to high doses of quetiapine显示文摘 | CHANDRAPPA P HO L | 2012 | Ther Adv Psy- chopharmaeol2012，2，5： | 1 |
| 18 | Synthesis of bismuth vanadate:its application in H2 evolution and sunlight-driven photodegradation显示文摘 | Nagabhushana G P Nagaraju G Chandrappa G T | 2013 | Journal of Materials Chemistry A2013，1，2： | 1 |
| 19 | Isolation and characterization of hydrocarbon producing green alga Botryococcus braunii from Indian freshwater bodies显示文摘 | CHANDRAPPA D RAVI S VINOD K | 2007 | Journal of Biotechnology2007，10，： | 1 |
| 20 | Overview of mental health issues of COVID-19:need of the hour显示文摘To the Editor,First detected in Wuhan,China,severe acute respiratory syndrome coronavirus 2(SARS CoV 2)virus is creating havoc worldwide and having an unprecedented impact on public health and society,so much so that it was declared a'Public Health Emergency of International Concern’in January 2020 and further as a‘pandemic’in March 2020.So far,it has affected more than 1.7 million people all over the world,causing 110 thousand deaths across 195 countries. | Barikar Chandrappa Malathesh Seshadri Sekhar Chatterjee Soumitra Das | 2020 | General Psychiatry2020，33，3： | 1 |
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