Effect of Reduced Graphite Oxide as Substrate for Zinc Oxide to Hydrogen Sulfide Adsorption

다국어 초록 (Multilingual Abstract)

Zinc oxide (ZnO) and reduced graphite oxide (rGO) composites were synthesized and tested as adsorbents for the hydrogen sulfide (H2S) adsorption at mid-to-high (300 to 500 ℃) temperatures. In order to investigate the critical roles of oxygen containing functional groups, such as hydroxyl, epoxy and carboxyl groups, attached on rGO surface for the H2S adsorption, various characterization methods (TGA, XRD, FT-IR, SEM and XPS) were conducted. For the reduction process for graphite oxide (GO) to rGO, a microwave irradiation method was used, and it provided a mild reduction environment which can remain substantial amount of oxygen functional groups on rGO surface. Those functional groups were anchoring and holding nano-sized ZnO onto the 2D rGO surface; and it prevented the aggregation effect on the ZnO particles even at high temperature ranges. Therefore, the H2S adsorption capacity had been increased about 3.5 times than the pure ZnO.

참고문헌 (Reference)

1 M. Seredych, "Zinc (hydr)oxide/graphite Based-phase Composites: Effect of the Carbonaceous Phase on Surface Properties and Enhancement in Electrical Conductivity" 22 : 7970-7978, 2012

2 V. Chandra, "Water-Dispersible Magnetite-reduced Graphene Oxide Composites for Arsenic Removal" 4 : 3979-3986, 2010

3 M. Seredych, "Visible- Light-Enhanced Interactions of Hydrogen Sulfide with Composites of Zinc (Oxy)hydroxide with Graphite Oxide and Graphene" 28 : 1337-1346, 2012

4 J. Algdal, "Thin Graphite Overlayers: Graphene and Alkali Metal Intercalation" 601 : 1167-1175, 2007

5 T.-H. Ko, "The Sorption of Hydrogen Sulfide from Hot Syngas by Metal Oxides over Supports" 58 : 467-474, 2005

6 J. K. Lee, "Silicon Nanoparticles-graphene Paper Composites for Li Ion Battery Anodes" 46 : 2025-2027, 2010

7 H. S. Song, "Selective Dibenzothiophene Adsorption on Graphene Prepared Using Different Methods" 51 (51): 10259-10264, 2012

8 C. Petit, "Revisiting the Chemistry of Graphite Oxides and its Effect on Ammonia Adsorption" 19 : 9176-, 2009

9 M. Seredych, "Reactive Adsorption of Hydrogen Sulfide on Graphite Oxide/Zr(OH)4 Composites" 166 : 1032-1038, 2011

10 S. Wu, "Nucleation Mechanism of Electrochemical Deposition of Cu on Reduced Graphene Oxide Electrodes" 115 : 15973-15979, 2011

11 T. Lu, "Microwave-assisted Synthesis of Graphene- ZnO Nanocomposite for Electrochemical Supercapacitors" 509 : 5488-5492, 2011

12 X. Y. Kong, "Metal-semiconductor Zn-ZnO Core-shell Nanobelts and Nanotubes" 108 : 570-574, 2004

13 H. G. Karge, "Hydrogen Sulfide Adsorption on Faujasite-type Zeolites with Systematically Varied Si-Al Ratios" 64 : 522-532, 1978

14 S. Lew, "High-temperature H2S Removal from Fuel Gases by Regenerable Zinc Oxide-Titanium Dioxide Sorbents" 28 : 535-541, 1989

15 J. P. Wakker, "High Temperature H2S and COS Removal with MnO and FeO on y- Al2O3 Acceptors" 32 : 139-149, 1993

16 M. D. Stoller, "Graphene- based Ultracapacitors" 8 : 3498-3502, 2008

17 S.-T. Yang, "Folding/Aggregation of Graphene Oxide and Its Application in Cu2+ Removal" 351 : 122-127, 2010

18 O. Mabayoje, "Enhanced Reactive Adsorption of Hydrogen Sulfide on the Composites of Graphene/Graphite Oxide with Copper (Hydr)oxychlorides" 4 : 3316-3324, 2012

19 H. S. Song, "Effect of Active Zinc Oxide Dispersion on Reduced Graphite Oxide for Hydrogen Sulfide Adsorption at Mid-temperature" 280 : 360-365, 2013

20 M. V Twigg, "Deactivation of Copper Metal Catalysts for Methanol Decomposition, Methanol Steam Reforming and Methanol Synthesis" 22 : 191-203, 2003

21 P. Dhage, "Copper-promoted ZnO/SiO2 Regenerable Sorbents for the RoomTemperature Removal of H2S from Reformate Gas Streams" 49 : 8388-8396, 2010

22 S. Park, "Colloidal Suspensions of Highly Reduced Graphene Oxide in a Wide Variety of Organic Solvents" 9 : 1593-1597, 2009

23 A. Samokhvalov, "Characterization of Active Sites, Determination of Mechanisms of H2S, COS and CS2 Sorption and Regeneration of ZnO Low-temperature Sorbents: Past, Current and Perspectives" 13 : 3197-3209, 2011

24 Y. Zhu, "Carbon-based Supercapacitors Produced by Activation of Graphene" 332 : 1537-1541, 2011

25 N. Li, "Battery Performance and Photocatalytic Activity of Mesoporous Anatase TiO2 Nanospheres/Graphene Composites by Template-free Self-assembly" 21 : 1717-1722, 2011

26 C. L. Garcia, "Adsorption of Hydrogen Sulfide on ZSM 5 Zeolites" 96 : 2230-2235, 1992

27 J. A. Rodriguez, "Adsorption and Decomposition of H2S on MgO(100), NiMgO(100), and ZnO(0001) Surfaces: A First-principles Density Functional Study" 104 : 3630-3638, 2000