Natural self-purification of water is limited by mass transfer processes between inert oxygen (O₂) and stable pollutants. This process must rely on large energy inputs and resource consumption, which have become a global challenge in the environmental field. Here, we greatly amplify this self-purification effect of natural dissolved oxygen (DO) by nonexpendable H₂O₂ triggering a DRC catalyst with a micro-potential difference surface. This low-energy strategy is mainly realized by lowering the activation energy barriers of endogenous substances and simultaneously opening the mass transfer channels over the Cu–ZnO surface. In this way, pollutant electrons and energy are efficiently utilized to activate DO. Surprisingly, the rapid degradation of the pollutants is accompanied by H₂O₂ consumption of only 2.6% at most, sometimes even reaching zero consumption, with the instantaneous absolute amount of H₂O₂ exceeding 100%. The typical endocrine disruptor BPA has been proven to be harmlessly degraded to small molecule alcohols and acids by self-purification amplification, including cleavage of stable contaminants on the catalyst surface, activation of natural DO, and enhancement of mass transfer between them.

中文翻译：

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内源性物质利用在微电位差表面上由非消耗性 H2O2 驱动的水自净化放大


水的自然自我净化受到惰性氧 （O₂） 和稳定污染物之间的传质过程的限制。这个过程必须依赖于大量的能源输入和资源消耗，这已成为环境领域的全球性挑战。在这里，我们通过非消耗性 H₂O₂ 触发具有微电位差表面的 DRC 催化剂，大大放大了天然溶解氧 （DO） 的这种自我净化效应。这种低能策略主要是通过降低内源性物质的活化能势垒并同时打开 Cu-ZnO 表面的传质通道来实现的。以这种方式，污染物的电子和能量被有效地利用来激活 DO。令人惊讶的是，污染物的快速降解伴随着 H₂O₂ 消耗最高仅为 2.6%，有时甚至达到零消耗，H₂O₂ 的瞬时绝对量超过 100%。典型的内分泌干扰物 BPA 已被证明通过自净化扩增无害地降解为小分子醇和酸，包括在催化剂表面裂解稳定污染物、活化天然 DO 以及增强它们之间的传质。