Bacteria breeding in refrigerators can greatly compromise the quality and shelf life of stored food, posing a serious concern. The utilization of disinfection treatments, including ultraviolet irradiation, ozone, and precious metal ions, in refrigerators is constrained by the risk of secondary contamination and the associated high costs. To tackle this matter, we developed a pyro-catalytic disinfection technology that takes advantage of ubiquitous temperature fluctuations to trigger the generation of highly cytotoxic reactive oxygen species for antibacterial. By subjecting the synthesized BaSrTiO (BST) nanowires or composite patches (BST@C) to temperature fluctuations ranging from 5 to 25 °C for 40 cycles, the survival rates of Staphylococcus aureus () and Escherichia coli () were found to be below 5%. More importantly, the survival rates of and were reduced to 19% and 34%, respectively, after only 80 refrigerator opening-closing cycles. This effective demonstration highlights the potential of the safety pyro-catalytic disinfection technology, which does not require additional energy consumption, and exhibits great compatibility with refrigerators.

中文翻译：

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通过普遍温度波动进行冰箱消毒的热催化

冰箱中细菌的繁殖会极大地影响储存食品的质量和保质期，引起严重关注。冰箱中消毒处理（包括紫外线照射、臭氧和贵金属离子）的使用受到二次污染风险和相关高成本的限制。为了解决这个问题，我们开发了一种热催化消毒技术，该技术利用普遍存在的温度波动来触发产生高细胞毒性的活性氧来抗菌。通过将合成的 BaSrTiO (BST) 纳米线或复合贴片 (BST@C) 置于 5 至 25 °C 的温度波动下 40 个循环，发现金黄色葡萄球菌 () 和大肠杆菌 () 的存活率低于 5 %。更重要的是，仅经过80次冰箱开关循环后， 和 的存活率分别降至19%和34%。这一有效的演示凸显了安全热催化消毒技术的潜力，该技术不需要额外的能源消耗，并且与冰箱具有良好的兼容性。