γ-Ce_2S_3大红色料表面附着ZnO及对H_2S释放的影响
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摘要
以市售大红色料γ-Ce_2S_3为原料,六水合硝酸锌(Zn(NO_3)_2·6H_2O)为锌源,无水碳酸钠(Na_2CO_3)为沉淀剂,醇水混合溶液为反应介质,采用非均相沉淀法在γ-Ce_2S_3色料表面附着一层ZnO,研究含Zn前驱体在色料颗粒表面附着形态及附着ZnO后对色料受热后H_2S释放的影响。研究结果表明:以乙醇与水混合溶液为反应介质,沉淀离子采用同步滴加方式,滴加速度0.3 mL/min,Zn与γ-Ce_2S_3的摩尔比为0.2时,300℃热处理30 min能够在γ-Ce_2S_3颗粒表面均匀附着一层ZnO,且色料仍保持鲜艳的红色,其色度L*、a*和b*值分别为34.17、33.10和22.80;表面附着ZnO后对H_2S的释放有明显的抑制作用,色料在350℃保温10 min,H_2S释放浓度由未附着ZnO的4.21 mg/m3降至0。
Heterogeneous precipitation method was employed to prepare the ZnO adhering γ-Ce_2S_3 by using commercially γ-Ce_2S_3 as the raw material,six hydrated zinc nitrate(Zn(NO_3)_2·6H_2O) as zinc source,anhydrous sodium carbonate(Na_2CO_3) as precipitant,and mixture of alcohol and water as reaction medium. It was studied that the micro-morphology of zincky precursors on the surface of pigment and the H_2S releasing after adherence of ZnO on the surface of pigment during heating process. The results show that a layer of ZnO could be uniformly adhered to the surface of the γ-Ce_2S_3 particles and the pigment could still keep the brilliant red by using mixture of ethanol and water as reaction medium,simultaneous dropping form of precipitated ions and 0. 3 mL/min dropping rate,0. 2 molar ratio of ZnO and γ-Ce_2S_3,and heat-treatment at 300 ℃ for 30 min. The chroma of L*,a*and b*is 34. 17,33. 10 and 22. 80,respectively. It has an obviously the inhibitory effects on releasing H_2S after adhered ZnO on the surface of γ-Ce_2S_3 and the amount of H_2S releasing is reduced from 4. 21 mg/m3 to 0 after heating at 350 ℃ for 10 min.
Heterogeneous precipitation method was employed to prepare the ZnO adhering γ-Ce_2S_3 by using commercially γ-Ce_2S_3 as the raw material,six hydrated zinc nitrate(Zn(NO_3)_2·6H_2O) as zinc source,anhydrous sodium carbonate(Na_2CO_3) as precipitant,and mixture of alcohol and water as reaction medium. It was studied that the micro-morphology of zincky precursors on the surface of pigment and the H_2S releasing after adherence of ZnO on the surface of pigment during heating process. The results show that a layer of ZnO could be uniformly adhered to the surface of the γ-Ce_2S_3 particles and the pigment could still keep the brilliant red by using mixture of ethanol and water as reaction medium,simultaneous dropping form of precipitated ions and 0. 3 mL/min dropping rate,0. 2 molar ratio of ZnO and γ-Ce_2S_3,and heat-treatment at 300 ℃ for 30 min. The chroma of L*,a*and b*is 34. 17,33. 10 and 22. 80,respectively. It has an obviously the inhibitory effects on releasing H_2S after adhered ZnO on the surface of γ-Ce_2S_3 and the amount of H_2S releasing is reduced from 4. 21 mg/m3 to 0 after heating at 350 ℃ for 10 min.
引文
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[2]朱振峰,豆立娜,刘辉,等.无铅熔剂包覆硫化铈红色陶瓷颜料的制备[J].功能材料,2015,46(22):22128-22132.
[3]雷丙龙.低温溶剂热法合成单分散Cd SxSe(1-x)与Zr Si O4色料的研究[D].广州:华南理工大学,2013.
[4]Mao W X,Zhang W,Chi Z X,et al.Core-shell Structured Ce2S3@Zn O and Its Potential as a Pigment[J].Journal of Materials Chemistry A,2015,3(5):2176-2180.
[5]Yu S Y,Wang D R,Liu Y,et al.Preparations and Characterizations ofγ-Ce2S3@Si O2Pigments from Precoated Ce O2with Improved Thermal and Acid Stabilities[J].RSC Advances,2014,4(45):23653-23657.
[6]Liu S G,Li Y M,Wang Z M,et al.Enhanced High Temperature Oxidization Resistance of Silica Coatedγ-Ce2S3,Red Pigments[J].Applied Surface Science,2016,387:1147-1153.
[7]Li L,Sun T H,Shu C H,et al.Low Temperature H2S Removal with 3-D Structural Mesoporous Molecular Sieves Supported Zn O from Gas Stream[J].Journal of Hazardous Materials,2016,311:142.
[8]Lin J Y.Detection of H2S at Room Temperature Using Zn O Sensors Based on Hall Effect[J].International Journal of Electrochemical Science,2017:6465-6476.
[9]Pourmortazavi S M,Marashianpour Z,Karimi M S,et al.Electrochemical Synthesis and Characterization of Zinc Carbonate and Zinc Oxide Nanoparticles[J].Chemistry,2015,1099(25):232-238.
[10]Yan Q,Guo L,Lu Y,et al.Thermodynamic Analysis of Hydrogen Production from Biomass Gasification in Supercritical Water[J].Energy Conversion&Management,2006,47(11-12):1515-1528.
[11]He X,Wang Y,Jia K,et al.Room-temperature Homogeneous Precipitation of Highly Uniform Ba CO3,Dumbbells in a Mixed Solvent of Ethylene Glycol and Water[J].Materials Letters,2016,181:244-247.
[12]谷智.材料制备原理与技术[M].西北工业大学出版社,2014:47-51.