CN108927137B - 一种碳掺杂氧化铋光催化材料的制备方法 - Google Patents
一种碳掺杂氧化铋光催化材料的制备方法 Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 45
- 229910000416 bismuth oxide Inorganic materials 0.000 title claims abstract description 32
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 33
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(III) oxide Inorganic materials O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 claims abstract description 15
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 10
- GEVPUGOOGXGPIO-UHFFFAOYSA-N oxalic acid;dihydrate Chemical compound O.O.OC(=O)C(O)=O GEVPUGOOGXGPIO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000000137 annealing Methods 0.000 claims abstract description 7
- FBXVOTBTGXARNA-UHFFFAOYSA-N bismuth;trinitrate;pentahydrate Chemical compound O.O.O.O.O.[Bi+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FBXVOTBTGXARNA-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 230000031700 light absorption Effects 0.000 abstract description 4
- 238000003786 synthesis reaction Methods 0.000 abstract description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000004298 light response Effects 0.000 description 2
- CJJMLLCUQDSZIZ-UHFFFAOYSA-N oxobismuth Chemical compound [Bi]=O CJJMLLCUQDSZIZ-UHFFFAOYSA-N 0.000 description 2
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 2
- 229940043267 rhodamine b Drugs 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 1
- 150000001621 bismuth Chemical class 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
本发明公开了一种碳掺杂氧化铋光催化材料的制备方法,将五水硝酸铋置于氧化铝坩埚中于500℃退火6h制得α‑Bi2O3粉末材料,再将制得的α‑Bi2O3粉末材料置于氧化铝坩埚中,加入二水合草酸粉末并混合均匀后于280℃退火50~200min制得碳掺杂氧化铋光催化材料。本发明制备过程简单可行,合成周期较短,相对于未掺杂的氧化铋,碳掺杂氧化铋光催化材料的光吸收边向长波方向移动,在400~500nm可见光波长范围内对光波的利用率较大,且光催化性能得到明显提升,在光电材料方面具有潜在应用价值。
Description
技术领域
本发明属于光电材料的合成技术领域,具体涉及一种碳掺杂氧化铋光催化材料的制备方法。
背景技术
我国铋资源丰富,近年来,年产量可达6000多吨,应用十分广泛。铋氧基材料具有层状的晶体结构、适当的禁带宽度以及铋原子特殊的电子结构,在实际的光催化反应中,往往表现出较高的活性,成为一类重要的光催化材料,已经受到广泛的关注。氧化铋作为铋源深加工后的一种产物广泛用于药物和铋盐制造。氧化铋属于铋氧基材料,外观为淡黄色,可见光响应能力有限,光催化活性较低。基于上述存在的问题,本发明设计了一种可见光响应增强且光催化活性提高的碳掺杂氧化铋光催化材料的制备方法。
发明内容
本发明解决的技术问题是提供了一种合成工艺简单且周期较短的碳掺杂氧化铋光催化材料的制备方法。
本发明为解决上述技术问题采用如下技术方案,一种碳掺杂氧化铋光催化材料的制备方法,其特征在于具体步骤为:将五水硝酸铋置于氧化铝坩埚中于500℃退火6h制得α-Bi2O3粉末材料,再将制得的α-Bi2O3粉末材料置于氧化铝坩埚中,加入二水合草酸粉末并混合均匀后于280℃退火50~200min制得碳掺杂氧化铋光催化材料。
优选的,所述α-Bi2O3粉末材料与二水合草酸粉末的投料质量比为1:1~1:2。
本发明制备过程简单可行,合成周期较短,相对于未掺杂的氧化铋,碳掺杂氧化铋光催化材料的光吸收边向长波方向移动,在400~500nm可见光波长范围内对光波的利用率较大,且光催化性能得到明显提升,在光电材料方面具有潜在应用价值。
附图说明
图1是本发明实施例1制得的碳掺杂氧化铋粉末材料的X射线衍射图谱;
图2是本发明实施例1制得的碳掺杂氧化铋粉末材料的粉末吸收光谱图;
图3是本发明实施例1制得的碳掺杂氧化铋粉末材料的扫描电镜图;
图4是本发明实施例1制得的碳掺杂氧化铋粉末材料的可见光催化降解罗丹明B性能曲线。
具体实施方式
以下通过实施例对本发明的上述内容做进一步详细说明,但不应该将此理解为本发明上述主题的范围仅限于以下的实施例,凡基于本发明上述内容实现的技术均属于本发明的范围。
实施例1
将4.85g五水硝酸铋置于氧化铝坩埚中于500℃退火6h制得α-Bi2O3粉末材料,再将0.5g制得的α-Bi2O3粉末材料置于氧化铝坩埚中,加入1.0g二水合草酸粉末并混合均匀后于280℃退火200min制得碳掺杂氧化铋粉末材料。
如图1所示,对所制得的碳掺杂氧化铋粉末材料进行XRD分析,发现碳掺杂氧化铋粉末材料和α-Bi2O3粉末材料的衍射峰均与标准JCPDS卡片71-2274一致,没有杂峰出现,化学式为Bi2O3,晶体结构为单斜相。
如图2所示,制得的碳掺杂氧化铋粉末材料相较于α-Bi2O3粉末材料对光的吸收增强,并且光吸收的波段出现了红移。
如图3所示,制得的碳掺杂氧化铋粉末材料呈棱柱状的形貌特征,并且上面分布着许多细小的孔洞。
如图4所示,在可见光激发120min后,碳掺杂氧化铋粉末材料降解罗丹明B污染物的降解率为99.7%,远高于未掺杂的氧化铋。
实施例2
将4.85g五水硝酸铋置于氧化铝坩埚中于500℃退火6h制得α-Bi2O3产物,再将0.5g制得的α-Bi2O3产物置于氧化铝坩埚中,加入0.5g二水合草酸粉末并混合均匀后于280℃退火200min制得碳掺杂氧化铋粉末材料。
实施例3
将4.85g五水硝酸铋置于氧化铝坩埚中于500℃退火6h制得α-Bi2O3产物,再将0.5g制得的α-Bi2O3产物置于氧化铝坩埚中,加入1.0g二水合草酸粉末并混合均匀后于280℃退火50min制得碳掺杂氧化铋粉末材料。
以上实施例描述了本发明的基本原理、主要特征及优点,本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明原理的范围下,本发明还会有各种变化和改进,这些变化和改进均落入本发明保护的范围内。
Claims (1)
1.一种碳掺杂氧化铋光催化材料的制备方法,其特征在于具体步骤为:将五水硝酸铋置于氧化铝坩埚中于500℃退火6h制得α-Bi2O3粉末材料,再将制得的α-Bi2O3粉末材料置于氧化铝坩埚中,加入二水合草酸粉末并混合均匀后于280℃退火50~200min制得碳掺杂氧化铋光催化材料,所述α-Bi2O3粉末材料与二水合草酸粉末的投料质量比为1:1~1:2。
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