01555nas a2200229   4500008004100000022001400041245007200055210006700127260011000194300001400304490000600318520071600324100002001040700002101060700002001081700002401101700002401125700002001149700002401169700002901193856010301222       2011                        eng d  a2040-336400aStrong photo-response in a flip-chip nanowire p-Cu2O/n-ZnO junction0 aStrong photoresponse in a flipchip nanowire pCu2OnZnO junction  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcOCT  a4706-47120 v33 a<p>Cu2O nanoneedles are synthesized on a copper substrate by a simple anodization and reducing ambient annealing protocol. ZnO nanorods are grown on ITO coated glass by a low temperature chemical route. The electronic and photo-response properties of the p-Cu2O/n-ZnO flip-chip heterojunction are then studied and analyzed. We show that the I-V characteristic is rectifying and the junction exhibits a good photoresponse (similar to 120% under 1 V reverse bias) under AM 1.5 (1 Sun) illumination. This nano-heterojunction photo-response is far stronger as compared to that of a pulsed laser deposited thin film p-Cu2O/n-ZnO heterojunction, which can be attributed to higher junction area in the former case.</p>1 aDeo, Meenal, S.1 aMujawar, Sarfraj1 aGame, Onkar, S.1 aYengantiwar, Ashish1 aBanpurkar, Arun, G.1 aKulkarni, Sneha1 aJog, Jyoti, Prakash1 aOgale, Satishchandra, B.  uhttps://library.ncl.res.in/content/strong-photo-response-flip-chip-nanowire-p-cu2on-zno-junction-002993nas a2200241   4500008004100000022001400041245012700055210006900182260011000251300001400361490000600375520203600381100003102417700001902448700002502467700002002492700001702512700003102529700001902560700002402579700002002603856012802623       2016                        eng d  a2046-206900aSolution chemistry-based nano-structuring of copper dendrites for efficient use in catalysis and superhydrophobic surfaces0 aSolution chemistrybased nanostructuring of copper dendrites for   aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJAN  a8416-84300 v63 a<p>Despite their performance and economic advantages over Ag and Au, there have been no focused research efforts on the nano-structuring of Cu dendrites with respect to fine-tuning their structure/morphology towards the efficiency enhancement of suitable applications. Reported here is a simple, versatile, environmentally-friendly and galvanic replacement reaction-based solution chemistry methodology to synthesize highly nano-structured copper dendrites targeted towards the efficiency enhancement of desired applications. Herein, copper is deposited galvanically on an Al foil in the presence of NaCl/HCl, wherein the chloride anions augment an uninterrupted replacement reaction. The growth process of Cu dendrites has been probed in detail. The presence of acid, the type of Cu2+ precursor salt, the Cu2+ ion concentration, the surfactant concentration and the reaction temperature are all demonstrated to provide useful means of modulating the surface structure/morphology of the dendrites. Notably, dendrites formed in the presence of acid are found to be highly nano-structured. Moreover, it is also found that the morphology/structure of the obtained Cu deposit depends considerably upon the choice of the Cu2+ precursor salt, a parameter that has been completely overlooked in the past. The acid-induced nano-structuring of the dendrites is exploited for enhancing their efficiency in the catalytic reduction of para-nitrophenol and for fabricating self-cleaning superhydrophobic surfaces. These nano-structured dendrites are demonstrated to have the highest ever normalized rate constant for the catalytic reduction reaction. Superhydrophobic surfaces fabricated using these dendrites demonstrate excellent self-cleaning abilities, showing a high contact angle (159 degrees) with low contact angle hysteresis (2 degrees). This facile synthetic strategy for the fabrication of highly nano-structured Cu dendrites is expected to open up avenues for the production of Cu-based low-cost functional nano/micro-materials.</p>1 aBakthavatsalam, Rangarajan1 aGhosh, Subrata1 aBiswas, Ratul, Kumar1 aSaxena, Aayushi1 aRaja, Alagar1 aThotiyl, Musthafa, Ottakam1 aWadhai, Sandip1 aBanpurkar, Arun, G.1 aKundu, Janardan  uhttps://library.ncl.res.in/content/solution-chemistry-based-nano-structuring-copper-dendrites-efficient-use-catalysis-and-0