A novel synthesis of hexagonal cylinder-like ZnO with an excellent performance by a surfactant-free microemulsion-hydrothermal method

다국어 초록 (Multilingual Abstract)

A W/O surfactant-free microemulsion (SFME) template-hydrothermal method for the preparation of ZnOproducts was proposed. Using the SFME system containing hexane, propan-2-ol and water, hexagonalcylinder-like (twinning) ZnO microcrystals were synthesized. The XRD, SEM and TEM characterizationsshowed that the synthesized ZnO microcrystals have a hexagonal wurtzite structure. At hydrothermaltemperatures of 120–140 C, hexagonal cylinder-like ZnO microcrystals were synthesized, whereas thehexagonal cylinder twinning ZnO microcrystals were obtained at 160 C. The growth mechanism of theZnO microcrystals was also investigated.
The EPR and XPS spectra of the synthesized ZnO products showed that there are oxygen vacancies onthe ZnO surface. The photodegradation behavior of methylene blue (MB, 10 ppm) with a UV-Hg lamp(250 W) as the light source in ZnO aqueous suspension (0.3 g L 1) was investigated. The ZnO productsynthesized at 140 ℃ can significantly photocatalyze the degradation of lower concentration MBsolutions. After 35 min of irradiation, the photocatalytic decomposition rate reached 98.3%. It is hopedthat this work could serve as an important stepping stone for establishing a novel hydrothermal methodbased on SFME system, therefore paving the way for other potential ideas on the application of SFMEsystems.

참고문헌 (Reference)

1 Rujia Zou, "ZnO nanorods on reduced graphene sheets with excellent field emission, gas sensor and photocatalytic properties" Royal Society of Chemistry (RSC) 1 (1): 8445-, 2013

2 Rakesh K. Sonker, "ZnO nanoneedle structure based dye-sensitized solar cell utilizing solid polymer electrolyte" Elsevier BV 223 : 133-136, 2018

3 Chang Hyo Kim, "Zinc oxide/activated carbon nanofiber composites for high-performance supercapacitor electrodes" Elsevier BV 274 : 512-520, 2015

4 Mohamed E. EL-Hefnawy, "Water in Olive Oil Surfactantless Microemulsions as Medium for CdS Nanoparticles Synthesis" Canadian Center of Science and Education 6 (6): 101-, 2012

5 M. Norouzi, "Thermoelectric energy harvesting using array of vertically aligned Al-doped ZnO nanorods" Elsevier BV 619 : 41-47, 2016

6 Malte Behrens, "The effect of Al-doping on ZnO nanoparticles applied as catalyst support" Royal Society of Chemistry (RSC) 15 (15): 1374-1381, 2013

7 Jie Xu, "Synthesis of hierarchical flower-like Mg2Al-Cl layered double hydroxide in a surfactant-free reverse microemulsion" Elsevier BV 505 : 816-823, 2017

8 Deepali Sharma, "Synthesis of ZnO nanoparticles using surfactant free in-air and microwave method" Elsevier BV 257 (257): 9661-9672, 2011

9 Jie Xu, "Synthesis of Mg2Al-Cl layered double hydroxide nanosheets in a surfactant-free reverse microemulsion" Springer Science and Business Media LLC 291 (291): 2515-2521, 2013

10 Qingyue Cui, "Synthesis and field emission of novel ZnO nanorod chains" 한국물리학회 9 (9): 426-430, 2009

11 Yumin Liu, "Synthesis and characterization of ZnO microstructures via a cationic surfactant-assisted hydrothermal microemulsion process" Elsevier BV 62 (62): 509-516, 2011

12 Wanguo Hou, "Surfactant-free microemulsions" Elsevier BV 25 : 67-74, 2016

13 Jie Xu, "Surfactant-Free Microemulsions of 1-Butyl-3-methylimidazolium Hexafluorophosphate, Diethylammonium Formate, and Water" American Chemical Society (ACS) 34 (34): 7776-7783, 2018

14 S. Anas, "Studies on the evolution of ZnO morphologies in a thermohydrolysis technique and evaluation of their functional properties" Elsevier BV 175 (175): 889-895, 2010

15 Michael L. Klossek, "Structure and Solubility in Surfactant-Free Microemulsions" Wiley 13 (13): 4116-4119, 2012

16 Shanshan Xiao, "Solvothermal synthesis of nanocrystalline ZnO with excellent photocatalytic performance" Springer Science and Business Media LLC 25 (25): 5518-5523, 2014

17 L.Z. Pei, "Single crystalline ZnO nanorods grown by a simple hydrothermal process" Elsevier BV 60 (60): 1063-1067, 2009

18 Jun Zhang, "Shape Evolution of One-Dimensional Single-Crystalline ZnO Nanostructures in a Microemulsion System" American Chemical Society (ACS) 4 (4): 309-313, 2004

19 Jiao Yang, "Self-assembly in the synthesis of shelled ZnO hollow spheres and their UV sensors performance" Elsevier BV 182 : 10-14, 2016

20 K. S. W. Sing, "Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity (Recommendations 1984)" Walter de Gruyter GmbH 57 (57): 603-619, 1985

21 Johan Agrell, "Production of hydrogen by partial oxidation of methanol over ZnO-supported palladium catalysts prepared by microemulsion technique" Elsevier BV 242 (242): 233-245, 2003

22 Supriya B. Jagadale, "Preparation, characterization of 1D ZnO nanorods and their gas sensing properties" Elsevier BV 44 (44): 3333-3340, 2018

23 So-Jung Kim, "Preparation of ZnO nanopowders by thermal plasma and characterization of photo-catalytic property" Elsevier BV 255 (255): 5363-5367, 2009

24 Xiaocui Cui, "Preparation of Nano-TiO2 by a Surfactant-Free Microemulsion–Hydrothermal Method and Its Photocatalytic Activity" American Chemical Society (ACS) 35 (35): 9255-9263, 2019

25 Alireza Haghighat Mamaghani, "Photocatalytic oxidation technology for indoor environment air purification: The state-of-the-art" Elsevier BV 203 : 247-269, 2017

26 N Daneshvar, "Photocatalytic degradation of azo dye acid red 14 in water on ZnO as an alternative catalyst to TiO2" Elsevier BV 162 (162): 317-322, 2004

27 V. Rogé, "Photocatalytic degradation behavior of multiple xenobiotics using MOCVD synthesized ZnO nanowires" Elsevier BV 306 : 215-222, 2018

28 Benoit Richard, "Nanoparticle Size Control in Microemulsion Synthesis" American Chemical Society (ACS) 33 (33): 4748-4757, 2017

29 Heather F. Greer, "Nanocone Decorated ZnO Microspheres Exposing the (0001) Plane and Enhanced Photocatalytic Properties" Wiley 4 (4): 1601238-, 2017

30 Baolu Fan, "Multistage growth of monocrystalline ZnO nanowires and twin-nanorods: oriented attachment and role of the spontaneous polarization force" Royal Society of Chemistry (RSC) 18 (18): 6492-6501, 2016

31 Silke Wolf, "Microemulsions: Options To Expand the Synthesis of Inorganic Nanoparticles" Wiley 55 (55): 15728-15752, 2016

32 Chung-Hsin Lu, "Microemulsion-mediated hydrothermal synthesis of photocatalytic TiO2 powders" Elsevier BV 154 (154): 649-654, 2008

33 Chuan-Pei Lee, "Microemulsion-assisted Zinc Oxide Synthesis: Morphology Control and Its Applications in Photoanodes of Dye-Sensitized Solar Cells" Elsevier BV 210 : 483-491, 2016

34 T. Biemelt, "Microemulsion flame pyrolysis for hopcalite nanoparticle synthesis: a new concept for catalyst preparation" Royal Society of Chemistry (RSC) 51 (51): 5872-5875, 2015

35 Rongguo Xie, "Low-Temperature Growth of Uniform ZnO Particles with Controllable Ellipsoidal Morphologies and Characteristic Luminescence Patterns" American Chemical Society (ACS) 110 (110): 19147-19153, 2006

36 Jiaguo Yu, "Hydrothermal Synthesis and Photocatalytic Activity of Zinc Oxide Hollow Spheres" American Chemical Society (ACS) 42 (42): 4902-4907, 2008

37 F. Xu, "High-yield synthesis of single-crystalline ZnO hexagonal nanoplates and accounts of their optical and photocatalytic properties" Springer Science and Business Media LLC 86 (86): 181-185, 2006

38 J.H. Yang, "Growth mechanism and optical properties of ZnO nanotube by the hydrothermal method on Si substrates" Elsevier BV 475 (475): 741-744, 2009

39 Ji-Hoon Suh, "Fully integrated and portable semiconductor-type multi-gas sensing module for IoT applications" Elsevier BV 265 : 660-667, 2018

40 Svetozar Musić, "Formation of nanosize ZnO particles by thermal decomposition of zinc acetylacetonate monohydrate" Elsevier BV 36 (36): 1117-1123, 2010

41 Kh. Ghanbari, "Flower-like ZnO decorated polyaniline/reduced graphene oxide nanocomposites for simultaneous determination of dopamine and uric acid" Elsevier BV 512 : 91-102, 2016

42 Jinping Liu, "Facile and Large-Scale Production of ZnO/Zn−Al Layered Double Hydroxide Hierarchical Heterostructures" American Chemical Society (ACS) 110 (110): 21865-21872, 2006

43 Jiaguo Yu, "Effects of pH on the microstructures and photocatalytic activity of mesoporous nanocrystalline titania powders prepared via hydrothermal method" Elsevier BV 258 (258): 104-112, 2006

44 A. Pimentel, "Effect of solvents on ZnO nanostructures synthesized by solvothermal method assisted by microwave radiation: a photocatalytic study" Springer Science and Business Media LLC 50 (50): 5777-5787, 2015

45 Sushil Kumar Pandey, "Effect of growth temperature on structural, electrical and optical properties of dual ion beam sputtered ZnO thin films" Springer Science and Business Media LLC 24 (24): 2541-2547, 2013

46 Xinyu Zhang, "Effect of aspect ratio and surface defects on the photocatalytic activity of ZnO nanorods" Springer Science and Business Media LLC 4 (4): 4596-, 2015

47 Nelson F Borys, "Detergentless water/oil microemulsions. III. Effect of KOH on phase diagram and effect of solvent composition on base hydrolysis of esters" Elsevier BV 71 (71): 526-532, 1979

48 Jignasa N. Solanki, "Controlled Size Silver Nanoparticles Synthesis with Water-in-Oil Microemulsion Method: A Topical Review" American Chemical Society (ACS) 50 (50): 12311-12323, 2011

49 Hong-xia Lu, "Controllable synthesis of spindle-like ZnO nanostructures by a simple low-temperature aqueous solution route" Elsevier BV 257 (257): 4519-4523, 2011

50 D. Vinoth Pandi, "CdSe quantum dots sensitized ZnO nanorods for solar cell application" Elsevier BV 223 : 227-230, 2018

51 Yuanzhi Chen, "Au–ZnO hybrid nanoflowers, nanomultipods and nanopyramids: one-pot reaction synthesis and photocatalytic properties" Royal Society of Chemistry (RSC) 6 (6): 874-881, 2014

52 M. Advand, "Array of vertically aligned Al-doped ZnO nanorods: Fabrication process and field emission performance" Elsevier BV 656 : 6-13, 2018

53 Ziqi Sun, "Architecture designed ZnO hollow microspheres with wide-range visible-light photoresponses" Royal Society of Chemistry (RSC) 1 (1): 6924-, 2013

54 Fabian Gyger, "Ammonia-in-Oil-Microemulsions and Their Application" Wiley 52 (52): 12443-12447, 2013

55 Q. Ahsanulhaq, "A templateless surfactant-free seedless aqueous route to single-crystalline ZnO nanowires synthesis" Elsevier BV 70 (70): 627-631, 2009

56 Miaomiao Song, "A surfactant-free microemulsion containing diethyl malonate, ethanol, and water: Microstructure, micropolarity and solubilizations" 한국공업화학회 83 : 81-89, 2020

57 Bin Sun, "A surfactant-free microemulsion consisting of water, ethanol, and dichloromethane and its template effect for silica synthesis" Elsevier BV 526 : 9-17, 2018

58 Lei Yin, "A simple and transparent well-aligned ZnO nanowire array ultraviolet photodetector with high responsivity" Elsevier BV 80 : 149-153, 2018

59 Hongjun Dong, "A novel high-efficiency visible-light sensitive Ag2CO3 photocatalyst with universal photodegradation performances: Simple synthesis, reaction mechanism and first-principles study" Elsevier BV 134-135 : 46-54, 2013

60 Yingjiu Zhang, "A Simple Method To Synthesize Nanowires" American Chemical Society (ACS) 14 (14): 3564-3568, 2002

61 Peng NI, "A Novel Surfactant-free Microemulsion System:N,N-Dimethyl Formamide/Furaldehyde/H2O" Wiley 26 (26): 1335-1338, 2008

62 Ziwei Deng, "A Facile Method to Fabricate ZnO Hollow Spheres and Their Photocatalytic Property" American Chemical Society (ACS) 112 (112): 16-22, 2008