The accelerating climate warming requires fast methods to reduce atmospheric carbon dioxide levels. Here, we converted carbon dioxide into titanium carbide using four magnetrons which were sequentially operated to emit microwave on titanium swarf. Carbon dioxide molecules dissociated in the plasma to react with ionized titanium atoms to form a stable titanium carbide product, using a microwave frequency is 2.3 gigahertz and 800 watts electrical power for each magnetron. Results show a reduction of carbon dioxide concentration from 2000 to 385 ppm within 30 s. Titanium carbide could be further functionalized as a three-dimensional printed gas sensor.

气候变暖的加速需要快速的方法来降低大气中的二氧化碳水平。在这里，我们使用四个磁控管将二氧化碳转化为碳化钛，这四个磁控管依次操作以在钛屑上发射微波。二氧化碳分子在等离子体中解离，与电离的钛原子反应形成稳定的碳化钛产品，使用的微波频率为2.3吉赫兹，每个磁控管的电功率为800瓦。结果显示，二氧化碳浓度在 30 秒内从 2000 ppm 降低至 385 ppm。碳化钛可以进一步用作三维印刷气体传感器。