CN111548789A - 一种基于荧光法检测氢气的复合传感膜及其使用方法 - Google Patents
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Abstract
一种基于荧光法检测氢气的复合传感膜及其使用方法,传感膜包括有透明支撑基材层,所述透明支撑基材层表面结合有荧光材料镀层,所述荧光材料镀层表面结合有散射光镀层,所述散射光镀层表面结合有黑色镀层,采用以下步骤使用传感膜:S1,用紫外线或蓝光作为激发光源辐照外层传感膜,再用与产生的激发光波长相近(±20‑30nm)的绿光、蓝光或红光LED为参比光源,利用荧光淬灭原理,通过氢气分子与荧光分子的相互作用,获得激发光与参比光的光相位差;S2,经光电二极管检测采集激发光与参比光,将光信号转换为电信号,将激发光与参比光通过处理模块对数据进行非线性算法拟合处理,获得最稳定,最敏感的氢气浓度变化。
Description
技术领域
本发明涉及传感器技术领域,具体涉及一种基于荧光法检测氢气的复合传感膜及其使用方法。
背景技术
氢气是最有前途和发展潜力的新能源。由于氢气是一种易燃易爆气体(尤其是在有一定氧气混合存在条件下),因此其检测是安全使用新能源的关键。目前氢检测所用传感器从信号来源上定义有传统的电化学技术,光纤检测技术及荧光检测技术等。电化学传感器由于使用寿命短,需定期维护等缺点逐渐被光学传感器取代。光纤检测技术通过修饰光纤功能涂层,检测由于氢气的吸附或表面化学反应引起的光路系统中吸光度、反射或散射光强等变化来表征被测氢气含量,其缺点在于系统复杂、成本高,传感器受环境因素影响使得稳定性差。
本发明设计了一种基于荧光法检测氢气的复合传感膜及制备方法,通过制备含有过渡金屈或贵金屈纳米富氢薄膜,以及光催化复合薄膜设计,制备低成本、高性能、长寿命的氢气传感膜以解决上述问题。
发明内容
为解决上述技术问题,本发明提出了一种基于荧光法检测氢气的复合传感膜,采用荧光染料分子材料作为基质的复合光学薄膜,该复合光学薄膜可以通过不同波长的光辐照产生荧光;所发射出的荧光对氢气敏感,通过荧光淬灭机制,可以对氢气浓度进行表征和计算,从而使得该光敏感膜成为氢气的一种传感单元。
为达到上述目的,本发明的技术方案如下:一种基于荧光法检测氢气的复合传感膜,包括有透明支撑基层,所述透明支撑基层表面结合有荧光材料镀层,所述荧光材料镀层表面结合有散射光镀层,所述散射光镀层表面结合有黑色镀层。
本发明进一步设置为:所述散射光镀层与所述黑色镀层之间设置有反光层
本发明进一步设置为:反光层采用Ag或Au金屈镀层材料,所述反光层的厚度在0.0-100μm。
本发明进一步设置为:所述散射光镀层采用钛白粉、氧化锌粉、金屈钯、金屈铂、金屈铪,金、银粉末、氧化钨粉末中至少两种材料的混合物。
本发明进一步设置为:采用370-500nm激发光源激发敏感传感膜,在不同基质材料中添加一种或多种如产物1、产物2、产物3和产物4中所标记的荧光染料分子,通过旋涂或喷涂制备复合传感膜,可获得发射波长520-780nm的稳定荧光信号。
本发明进一步设置为:所述散射光镀层采用Pd-Au二元合金颗粒、金屈Pt颗粒、金屈铪颗粒的一种或多种混合形成富氢薄膜层,其中Pd-Au二元合金颗粒、金屈Pt颗粒、金屈铪颗粒粒径在1nm-5um范围内。
本发明进一步设置为:所述散射光镀层采用具有光催化性能的纳米粉末材料Ti02与金属颗粒物混合,Ti02颗粒浓度控制在0.01mg-100g/L。
本发明进一步设置为:所述黑色镀层选择黑色石墨或黑色碳粉或黑色金屈粉末。
本发明还公开了一种传感膜的使用方法,通过光电二极管对荧光染料分子激发产生的参比光进行采集,并将光信号转换成电信号,经过算法处理后获得氢气的浓度。
为达到上述目的,本发明的技术方案如下:一种传感膜的使用方法,包括有如下步骤:
S1,用紫外线或蓝光作为激发光源辐照外层传感膜,再用与产生的激发光波长相近(±20-30nm)的绿光、蓝光或红光LED为参比光源,利用荧光淬灭原理,通过氢气分子与荧光分子的相互作用,获得激发光与参比光的光相位差;
S2,经光电二极管检测采集激发光与参比光,将光信号转换为电信号,将激发光与参比光通过处理模块对数据进行非线性算法拟合处理,获得最稳定,最敏感的氢气浓度变化。
附图说明
为了更清楚地说明本发明实施例中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍。
图1为传感膜的结构示意图;
图2为传感膜的检测原理示意图;
图3为传感膜使用流程示意图。
图中:1、传感膜;11、透明支撑基材层;12、荧光材料镀层;13、散射光镀层;14、黑色镀层;15、反光层;2、参比光源;3、激发光源;4、光电二极管;5、处理模块。
具体实施方式
下面结合附图对本发明作进一步详细的说明。
如图1所示,一种基于荧光法检测氢气的复合传感膜,包括有透明支撑基层,所述透明支撑基层表面结合有荧光材料镀层,所述荧光材料镀层表面结合有散射光镀层,所述散射光镀层表面结合有黑色镀层。在所述散射光镀层与所述黑色镀层之间设置有反光层
本方案中,反光层采用Ag或Au金屈镀层材料,所述反光层的厚度在0.0-100μm,通过调节光电二极管检测到的荧光信号不出现过饱和现象为宜;若信号量级稳定,反光层膜厚可以为0um,即无反光层镀层。
本方案中,所述散射光镀层采用钛白粉、氧化锌粉、金屈钯、金屈铂、金屈铪,金、银粉末、氧化钨粉末中至少两种材料的混合物。
本方案中,所述散射光镀层采用Pd-Au二元合金颗粒、金屈Pt颗粒、金屈铪颗粒的一种或多种混合形成富氢薄膜层,其中Pd-Au二元合金颗粒、金屈Pt颗粒、金屈铪颗粒粒径在1nm-5um范围内。
本方案中,所述散射光镀层采用具有光催化性能的纳米粉末材料TiO2与金屈颗粒物混合,TiO2颗粒浓度控制在0.01mg-100g/L。
本发明进一步设置为:所述黑色镀层选择黑色石墨或黑色碳粉或黑色金屈粉末。
本方案中,采用370-500nm激发光源激发敏感传感膜,在不同基质材料中添加一种或多种如产物1、产物2、产物3和产物4中所标记的荧光染料分子,通过旋涂或喷涂制备复合传感膜,可获得发射波长520-780nm的稳定荧光信号。
本发明还提供了一种使用上述传感膜的使用方法,包括有如下步骤:
S1,用紫外线或蓝光作为激发光源辐照外层传感膜,再用与产生的激发光波长相近(±20-30nm)的绿光、蓝光或红光LED为参比光源,利用荧光淬灭原理,通过氢气分子与荧光分子的相互作用,获得激发光与参比光的光相位差;
S2,经光电二极管检测采集激发光与参比光,将光信号转换为电信号,将激发光与参比光通过处理模块对数据进行非线性算法拟合处理,获得最稳定,最敏感的氢气浓度变化。
应当指出,对于本领域的普通技术人员来说,在不脱离本发明创造构思的前提下,还可以做出若干变形和改进,这些都屈于本发明的保护范围。
Claims (10)
1.一种基于荧光法检测氢气的复合传感膜,包括有透明支撑基层,其特征在于,所述透明支撑基层表面结合有荧光材料镀层,所述荧光材料镀层表面结合有散射光镀层,所述散射光镀层表面结合有黑色镀层。
2.根据权利要求1所述的一种基于荧光法检测氢气的复合传感膜,其特征在于,所述散射光镀层与所述黑色镀层之间设置有反光层。
3.根据权利要求1所述的一种基于荧光法检测氢气的复合传感膜,其特征在于,反光层采用Ag或Au金屈镀层材料,所述反光层的厚度在0.0-100μm。
4.根据权利要求1所述的一种基于荧光法检测氢气的复合传感膜,其特征在于,所述散射光镀层采用钛白粉、氧化锌粉、金屈钯、金属铂、金属铪,金、银粉末、氧化钨粉末中至少两种材料的混合物。
6.根据权利要求5所述的一种基于荧光法检测氢气的复合传感膜,其特征在于,采用370-500nm激发光源激发敏感传感膜,在不同基质材料中添加一种或多种如产物1、产物2、产物3和产物4中所标记的荧光染料分子,通过旋涂或喷涂制备复合传感膜,可获得发射波长520-780nm的稳定荧光信号。
7.根据权利要求1所述的一种基于荧光法检测氢气的复合传感膜,其特征在于,所述散射光镀层采用Pd-Au二元合金颗粒、金屈Pt颗粒、金屈铪颗粒的一种或多种混合形成富氢薄膜层,其中Pd-Au二元合金颗粒、金屈Pt颗粒、金屈铪颗粒粒径在1nm-5um范围内。
8.根据权利要求7所述的一种基于荧光法检测氢气的复合传感膜,其特征在于,所述散射光镀层采用具有光催化性能的纳米粉末材料TiO2与金屈颗粒物混合,TiO2颗粒浓度控制在0.01mg-100g/L。
9.根据权利要求1所述的一种基于荧光法检测氢气的复合传感膜,其特征在于,所述黑色镀层选择黑色石墨或黑色碳粉或黑色金屈粉末。
10.一种使用如权利要求1-9所述传感膜的使用方法,其特征在于,包括有如下步骤:
S1,用紫外线或蓝光作为激发光源辐照外层传感膜,再用与产生的激发光波长相近(±20-30nm)的绿光、蓝光或红光LED为参比光源,利用荧光淬灭原理,通过氢气分子与荧光分子的相互作用,获得激发光与参比光的光相位差;
S2,经光电二极管检测采集激发光与参比光,将光信号转换为电信号,将激发光与参比光通过处理模块对数据进行非线性算法拟合处理,获得最稳定,最敏感的氢气浓度变化。
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CN112147120A (zh) * | 2020-10-19 | 2020-12-29 | 赵启涛 | 自带超声清洁功能的荧光溶解氧传感膜及制备方法与应用 |
CN115561217A (zh) * | 2022-11-21 | 2023-01-03 | 深圳湃诺瓦医疗科技有限公司 | 生物传感器以及监测设备 |
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CN115561217A (zh) * | 2022-11-21 | 2023-01-03 | 深圳湃诺瓦医疗科技有限公司 | 生物传感器以及监测设备 |
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