静电纺丝制备Ag/ZnO复合纳米纤维及其光催化降解甲基橙的性能研究
|
摘要
以聚乙烯吡咯烷酮(PVP)为模板,硝酸银(AgNO_3)和二水合醋酸锌(Zn(CH_3COO)_2·2H_2O)为原料,利用静电纺丝技术制备了AgNO_3/Zn (CH_3COO)_2/PVP复合纳米纤维,经高温煅烧获得Ag/ZnO复合纳米材料,采用扫SEM、XRD对复合纳米材料的形貌和结构进行表征。在紫外灯照射下,以甲基橙为模拟污染物,研究了煅烧温度和Ag掺杂量对复合材料光催化性能的影响。研究表明,600℃煅烧制得的Ag掺杂摩尔分数为4%的Ag/ZnO复合纳米材料对甲基橙的催化效果最佳,光照210 min后对浓度为10 mg/L甲基橙的降解率高达99. 9%,甲基橙基本矿化。复合材料循环使用4次仍可使甲基橙的降解率在95%以上,具有非常广阔的应用前景。
Using polyvinylpyrrolidone( PVP) as template,silver nitrate( AgNO_3) and zinc acetate dihydrate( Zn( CH_3 COO)_2·2 H_2 O) as raw materials,AgNO_3/Zn( CH_3 COO)_2/PVP was prepared by electrospinning technique. The composite nanofibers were calcined at high temperature to obtain Ag/ZnO composite nanomaterials. The morphology and structure of the composite nanomaterials were characterized by SEM and XRD. The effects of calcination temperature and Ag doping amount on the photocatalytic properties of the composites were investigated under UV irradiation with methyl orange as the simulated pollutant. The results show that the Ag/ZnO composite nanomaterials with Ag content of 4% by calcination at 600 ℃ have the best catalytic effect on methyl orange,and the degradation of methyl orange at a concentration of 10 mg/L after 210 min. The rate is as high as 99. 9%,and methyl orange is basically mineralized. The recycling of the composite material for 4 times can still make the degradation rate of methyl orange more than 95%,which has a very broad application prospect.
Using polyvinylpyrrolidone( PVP) as template,silver nitrate( AgNO_3) and zinc acetate dihydrate( Zn( CH_3 COO)_2·2 H_2 O) as raw materials,AgNO_3/Zn( CH_3 COO)_2/PVP was prepared by electrospinning technique. The composite nanofibers were calcined at high temperature to obtain Ag/ZnO composite nanomaterials. The morphology and structure of the composite nanomaterials were characterized by SEM and XRD. The effects of calcination temperature and Ag doping amount on the photocatalytic properties of the composites were investigated under UV irradiation with methyl orange as the simulated pollutant. The results show that the Ag/ZnO composite nanomaterials with Ag content of 4% by calcination at 600 ℃ have the best catalytic effect on methyl orange,and the degradation of methyl orange at a concentration of 10 mg/L after 210 min. The rate is as high as 99. 9%,and methyl orange is basically mineralized. The recycling of the composite material for 4 times can still make the degradation rate of methyl orange more than 95%,which has a very broad application prospect.
引文
[1]陈平,王晨,王瑶.过渡金属强化过硫酸钾体系降解甲基橙废水[J].工业用水与废水,2018,49(4):17-21.
[2] Habiba U,Siddique T A,Joo T C,et al. Synthesis of chitosan/polyvinyl alcohol/zeolite composite for removal of methyl orange,Congo red and chromium(VI)by flocculation/adsorption[J]. Carbohydrate Polymers,2017,(157):1568-1576.
[3]丁春生,曾海明,黄燕,等.电絮凝法处理偶氮染料废水的脱色试验研究[J].印染助剂,2012,29(3):39-41.
[4] Zhang Weiping,Yan Ping,Sun Desi. Screening of one microbial flocculant for treatment of methyl orange wastewater and its decolorization effect[J].农业科学与技术(英文版),2011,12(12):1929-1931.
[5] Wang Yan,Gao Yaowen,Chen Lu,et al. Goethite as an efficient heterogeneous Fenton catalyst for the degradation of methyl orange[J]. Catalysis Today,2015,252(9):107-112.
[6] Sun Caixuan,He Ping,Pan Guofeng,et al. Study on preparation and visible-light activity of Ag-Ti O2,supported by artificial zeolite[J]. Research on Chemical Intermediates,2018,44(4):1-14.
[7]周媛,多喜,李成博,等.纳米氧化锌的制备及其光催化降解甲基橙的研究[J].内蒙古农业大学学报(自然科学版),2018,39(4):86-94.
[8] Kumaresan N,Ramamurthi K,Babu R R,et al. Hydrothermally grown Zn O nanoparticles for effective photocatalytic activity[J]. Applied Surface Science,2017,(418):138-146.
[9] Zhou Gangcheng,Zhu Quanxin,Xiong Wanxiong,et al. The Microwave Synthesis and Photocatalytic Activity of Zn O/Ti O2Nanocomposites[J]. Advanced Materials Research,2016,651(3):187-192.
[10]Zgura I,Preda N,Socol G,et al. Wet chemical synthesis of Zn O-Cd S composites and their photocatalytic activity[J]. Materials Research Bulletin,2017,(99):174-181.
[11]Gao Shiyong,Zhang Jiejing,Li Yikun,et al. Synthesis of Zn O/Cd S/Ti O2composite with enhanced photocatalytic activity and stability by a simple solution-based method[J]. Berichte Der Deutschen Chemischen Gesellschaft,2018,(18):916-1920.
[12]杨为森,周美珠,简绍菊,等. Bi2O3/Zn O复合材料的制备及太阳光处理孔雀石绿的应用研究[J].化工新型材料,2018,46(8):272-275.
[13]Xiao Qi,Ouyang Linli. Photocatalytic photodegradation of xanthate over Zn1-x MnxO under visible light irradiation[J]. Journal of Alloys&Compounds,2009,479(1):L4-L7.
[14]Wu Changle,Shen Li,Yu Huaguang,et al. Solvothermal synthesis of Cu-doped Zn O nanowires with visible lightdriven photocatalytic activity[J]. Materials Letters,2012,(74):236-238.
[15]Sutka A,Kaambre T,Parna R,et al. Co doped Zn O nanowires as visible light photocatalysts[J]. Solid State Sciences,2016,(56):54-62.
[16]Liu Xueqin,Iocozzia J,Wang Yang,et al. Noble metalmetal oxide nanohybrids with tailored nanostructures for efficient solar energyconversion,photocatalysis andenvironmental remediation[J]. Energy&Environmental Science,2017,10(2):402-434.
[17]Pirhashemi M,Habibi-Yangjeh A. Ultrasonic-assisted preparation of plasmonic Zn O/Ag/Ag2WO4,nanocomposites with high visible-light photocatalytic performance for degradation of organic pollutants[J]. Journal of Colloid&Interface Science,2017,(491):216-229.
[18]简绍菊,左甜,杨为森,等.静电纺丝制备Ag/Zn O复合材料及其光催化性能研究[J].江西师范大学学报(自然版),2017,41(3):225-228.
[19]Khademalrasool M,Farbod M,Zad A I. Preparation of Zn O nanoparticles/Ag nanowires nanocomposites as plasmonic photocatalysts and investigation of the effect of concentration and diameter size of Ag nanowires on their photocatalytic performance[J]. Journal of Alloys&Compounds,2016,(664):707-714.
[20]弓莹,焦玉荣,李霄. Ag掺杂Zn O光催化剂的制备及其性能研究[J].榆林学院学报,2016,(2):13-16.
[2] Habiba U,Siddique T A,Joo T C,et al. Synthesis of chitosan/polyvinyl alcohol/zeolite composite for removal of methyl orange,Congo red and chromium(VI)by flocculation/adsorption[J]. Carbohydrate Polymers,2017,(157):1568-1576.
[3]丁春生,曾海明,黄燕,等.电絮凝法处理偶氮染料废水的脱色试验研究[J].印染助剂,2012,29(3):39-41.
[4] Zhang Weiping,Yan Ping,Sun Desi. Screening of one microbial flocculant for treatment of methyl orange wastewater and its decolorization effect[J].农业科学与技术(英文版),2011,12(12):1929-1931.
[5] Wang Yan,Gao Yaowen,Chen Lu,et al. Goethite as an efficient heterogeneous Fenton catalyst for the degradation of methyl orange[J]. Catalysis Today,2015,252(9):107-112.
[6] Sun Caixuan,He Ping,Pan Guofeng,et al. Study on preparation and visible-light activity of Ag-Ti O2,supported by artificial zeolite[J]. Research on Chemical Intermediates,2018,44(4):1-14.
[7]周媛,多喜,李成博,等.纳米氧化锌的制备及其光催化降解甲基橙的研究[J].内蒙古农业大学学报(自然科学版),2018,39(4):86-94.
[8] Kumaresan N,Ramamurthi K,Babu R R,et al. Hydrothermally grown Zn O nanoparticles for effective photocatalytic activity[J]. Applied Surface Science,2017,(418):138-146.
[9] Zhou Gangcheng,Zhu Quanxin,Xiong Wanxiong,et al. The Microwave Synthesis and Photocatalytic Activity of Zn O/Ti O2Nanocomposites[J]. Advanced Materials Research,2016,651(3):187-192.
[10]Zgura I,Preda N,Socol G,et al. Wet chemical synthesis of Zn O-Cd S composites and their photocatalytic activity[J]. Materials Research Bulletin,2017,(99):174-181.
[11]Gao Shiyong,Zhang Jiejing,Li Yikun,et al. Synthesis of Zn O/Cd S/Ti O2composite with enhanced photocatalytic activity and stability by a simple solution-based method[J]. Berichte Der Deutschen Chemischen Gesellschaft,2018,(18):916-1920.
[12]杨为森,周美珠,简绍菊,等. Bi2O3/Zn O复合材料的制备及太阳光处理孔雀石绿的应用研究[J].化工新型材料,2018,46(8):272-275.
[13]Xiao Qi,Ouyang Linli. Photocatalytic photodegradation of xanthate over Zn1-x MnxO under visible light irradiation[J]. Journal of Alloys&Compounds,2009,479(1):L4-L7.
[14]Wu Changle,Shen Li,Yu Huaguang,et al. Solvothermal synthesis of Cu-doped Zn O nanowires with visible lightdriven photocatalytic activity[J]. Materials Letters,2012,(74):236-238.
[15]Sutka A,Kaambre T,Parna R,et al. Co doped Zn O nanowires as visible light photocatalysts[J]. Solid State Sciences,2016,(56):54-62.
[16]Liu Xueqin,Iocozzia J,Wang Yang,et al. Noble metalmetal oxide nanohybrids with tailored nanostructures for efficient solar energyconversion,photocatalysis andenvironmental remediation[J]. Energy&Environmental Science,2017,10(2):402-434.
[17]Pirhashemi M,Habibi-Yangjeh A. Ultrasonic-assisted preparation of plasmonic Zn O/Ag/Ag2WO4,nanocomposites with high visible-light photocatalytic performance for degradation of organic pollutants[J]. Journal of Colloid&Interface Science,2017,(491):216-229.
[18]简绍菊,左甜,杨为森,等.静电纺丝制备Ag/Zn O复合材料及其光催化性能研究[J].江西师范大学学报(自然版),2017,41(3):225-228.
[19]Khademalrasool M,Farbod M,Zad A I. Preparation of Zn O nanoparticles/Ag nanowires nanocomposites as plasmonic photocatalysts and investigation of the effect of concentration and diameter size of Ag nanowires on their photocatalytic performance[J]. Journal of Alloys&Compounds,2016,(664):707-714.
[20]弓莹,焦玉荣,李霄. Ag掺杂Zn O光催化剂的制备及其性能研究[J].榆林学院学报,2016,(2):13-16.