12:30, Fri, Dec 12, 2025 Updated: 12:35, Fri, Dec 12, 2025 Money expert Martin Lewis has urged O2 customers to report it after they were hit with unexpectedly large final bills for trying to ditch the ...

People who previously had a phone contract with O2, but ended their deal early due to the company's upcoming price hike announcement, have been urged to check if they're eligible for refunds. This ...

Customers who have recently left O2 or tried to leave have been sent an urgent message. Money Saving Expert (MSE) says the provider has wrongly added hundreds of pounds to some final bills as ...

过氧化尿素(CO(NH2)2•H2O2)作为尿素的衍生物，已广泛应用于制药、农业、纺纱、日常化工等。CO(NH2)2•H2O2的工业生产主要依赖于尿素和H2O2这两种反应物。其中，通过碳源(CO2)和氮源(N2、NO、NO2−、NO3−)耦合高效电催化剂，可以在电化学条件下通过电催化C-N偶联反应有效地生成尿素。同时，利用高效电催化剂和活性OOH中间体的适当 ...

The Africa Cup of Nations 2025 has taken center stage in December and early January, as 24 teams went to Morocco aiming to be crowned AFCON champs. Now only a handful remain in this brilliant ...

O2 customers could pay as little as £6 per month, avoid exit fees and the price hikes if they switch within their 30-day window Which? Team Championing consumers since 1957, our team of over 150 ...

Live updates, video and analysis from Alexandra Palace as Luke Littler goes back to back at the World Darts Championship against Gian van Veen; watch live on Sky Sports' dedicated darts channel ...

Next summer Mumford and Sons will headline BST Hyde Park, one of London’s biggest music festivals, but before all that the stomp-clap-hey folk titans are touring Britain’s biggest arenas. The final ...

* no score awarded for Sao Paulo GP Qualifying as Bortoleto did not take part after crashing in Sprint **no score awarded for Bahrain GP as Hulkenberg was disqualified Watch every race of the 2026 F1 ...

James Chen, CMT is an expert trader, investment adviser, and global market strategist. Gordon Scott has been an active investor and technical analyst or 20+ years. He is a Chartered Market Technician ...

第一作者（或者共同第一作者）：彭建钊（副研究员），麦景行（硕士研究生） 通讯作者（或者共同通讯作者）：张雷教授，李慧齐助理教授，乐弦副教授 通讯单位：深圳大学 年份：2025 Doi：https://doi.org/10.1002/adfm.202527905 全文速览 该研究报道了一系列通过非第一配位壳层工程实现电子结构精确调控的非均相分子Ni–N ₂ ...

本研究旨在开发基于海水的高性能氧还原反应（ORR）电催化剂，这对于可再生能源的存储和转换具有重要意义。目前，基于铁的衍生物被氮掺杂的碳包覆，是典型的代表。然而，揭示氮构型对ORR活性和耐氯性的机制仍然是一个巨大挑战。