In-situ Joule-heating drives rapid and on-demand catalytic VOCs removal with ultralow energy consumption
In-situ Joule-heating drives rapid and on-demand catalytic VOCs removal with ultralow energy consumption
复制标题
原位焦耳加热以超低能耗驱动快速、按需催化 VOC 去除
DOI：
10.1016/j.nanoen.2022.107725
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发表时间：
2022
期刊：
影响因子：
17.6
通讯作者：
Hui Wu
中科院分区：
文献类型：
--
作者：
Peng Du;Ruyue Wang;Bohan Deng;Xian He;Yuanzheng Long;Cheng Yang;Zhiwei Wang;Binghui Ge;Kai Huang;Ru Zhang;Ming Lei;Hui Wu
环境净化的运行通常需要消耗大量的能源，降低环境治理的能源成本具有重要的科学意义和真实的影响。特别地，迫切需要使以挥发性有机化合物（VOC）为代表的气态污染物的催化氧化的能量成本最小化。在此，我们开发了一种快速的原位焦耳加热配置，以驱动超低能耗的催化VOCs氧化。作为一个典型的例子，原子分散的Pt/CeO 2催化剂被修饰在导电泡沫镍基底上，既作为催化剂又作为电子元件，具有最小的压降和高相容性。在6.5W的超低输入功率下，甲苯转化率（1000 ppm，33 ml min-1）达到100%，比传统加热炉的转化率低87%.此外，还展示了长期稳定性，对各种VOCs的高度通用性，以及对实时变化的组分的响应性。该系统的突出电热性能可以推广到更多的气相催化反应，能耗低得多。·快速原位焦耳加热系统可驱动VOCs催化去除，性能优异，能耗超低。·加热曲线的动态调节能够准确快速地降解目标VOC分子。·反应器作为智能环境模块与工业化智能控制相结合，具有很大的发展前景。
The running of environmental purification usually employs massive consumption of energy, and it is of significant scientific importance and real impact to reduce the energy cost in environmental treatments. In particular, it is urgently required to minimalize the energy cost of the catalytic oxidation of gaseous pollutants represented by volatile organic compounds (VOCs). Herein, we develop a rapid in-situ Joule-heating configuration to drive the catalytic VOCs oxidation with ultra-low energy consumption. As a prototypical illustration, atomically dispersed Pt/CeO 2 catalyst was decorated on conductive Nickle foam substrate to act as both catalytic and electric components with minimal pressure drop and high compatibility. The catalytic system exhibited 100% conversion toward toluene (1000 ppm, 33 ml min -1 ) with an ultralow input power of 6.5 W, which was 87% lower than that of a conventional heating furnace. Moreover, the long-term stability, high universality for various VOCs, and responsiveness for real-time changing components were also demonstrated. The outstanding electro-thermal properties of the system can be extended to more gaseous catalytic reactions with much lower energy consumption. • The rapid in-situ Joule-heating system can drive VOCs catalytic removal with excellent performance and ultra-low energy consumption. • Dynamic modulation of heating profiles enables accurate and rapid degradation of target VOC molecules. • The reactor exhibits great prospects as a smart environmental module in combination with industrialized intelligent control.