Although the selective catalytic reduction technology has been confirmed to be effective for nitrogen oxide (NO_x) removal, green and sustainable NO_x re-utilization under ambient conditions is still a great challenge. Herein, we develop an on-site system by coupling the continuous chemical absorption and photocatalytic reduction of NO in simulated flue gas (C_NO = 500 ppm, GHSV = 18,000 h^–1), which accomplishes an exceptional NO conversion into value-added ammonia with competitive conversion efficiency (89.05 ± 0.71%), ammonia production selectivity (95.58 ± 0.95%), and ammonia recovery efficiency (>90%) under ambient conditions. The anti-poisoning capacities, including the resistance against factors of H₂O, SO₂, and alkali/alkaline/heavy metals, are also achieved, which presents strong environmental practicability for treating NO_x in flue gas. In addition, the critical roles of corresponding chemical absorption and catalytic reduction components are also revealed by in situ characterizations. The emerging strategy herein not only achieves a milestone efficiency for sustainable NO purification but also opens a new route for contaminant resourcing in the near future of carbon neutrality.

中文翻译：

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超越净化：通过在环境条件下耦合连续吸收和光还原，将 NO 高效选择性地转化为氨

尽管选择性催化还原技术已被证实可有效去除氮氧化物（NO _x），但在环境条件下绿色可持续地再利用NO _{x仍然是一个巨大的挑战。}在此，我们通过耦合模拟烟气中 NO 的连续化学吸收和光催化还原（ C _NO = 500 ppm，GHSV = 18,000 h ^–1 ）开发了一个现场系统，实现了出色的 NO 转化为增值氨在环境条件下具有具有竞争力的转化效率 (89.05 ± 0.71%)、氨生产选择性 (95.58 ± 0.95%) 和氨回收效率 (>90%)。_{抗中毒能力，包括对H 2}因子的抵抗力O、SO ₂、碱金属/碱金属/重金属也得到了处理，具有很强的处理烟气中_{NOx的环境实用性。}此外，原位表征还揭示了相应化学吸收和催化还原组分的关键作用。此处的新兴策略不仅实现了可持续 NO 净化的里程碑效率，而且在不久的将来碳中和开辟了污染物资源化的新途径。