Employing pure water, the ultimate green source of hydrogen donor to initiate chemical reactions that involve a hydrogen atom transfer (HAT) step is fascinating but challenging due to its large HÀ O bond dissociation energy (BDE H-O = 5.1 eV). Many approaches have been explored to stimulate water for hydrogenative reactions, but the efficiency and productivity still require significant enhancement. Here, we show that the surface hydroxylated graphitic carbon nitride (gCNÀ OH) only requires 2.25 eV to activate HÀ O bonds in water, enabling abstraction of hydrogen atoms via dehydrogenation of pure water into hydrogen peroxide under visible light irradiation. The gCNÀ OH presents a stable catalytic performance for hydrogenative NÀ N coupling, pinacol-type coupling and dehalogenative CÀ C coupling, all with high yield and efficiency, even under solar radiation, featuring extensive impacts in using renewable energy for a cleaner process in dye, electronic, and pharmaceutical industries.

Employing pure water, the ultimate green source of hydrogen donor to initiate chemical reactions that involve a hydrogen atom transfer (HAT) step is fascinating but challenging due to its large HÀ O bond dissociation energy (BDE H-O = 5.1 eV). Many approaches have been explored to stimulate water for hydrogenative reactions, but the efficiency and productivity still require significant enhancement. Here, we show that the surface hydroxylated graphitic carbon nitride (gCNÀ OH) only requires 2.25 eV to activate HÀ O bonds in water, enabling abstraction of hydrogen atoms via dehydrogenation of pure water into hydrogen peroxide under visible light irradiation. The gCNÀ OH presents a stable catalytic performance for hydrogenative NÀ N coupling, pinacol-type coupling and dehalogenative CÀ C coupling, all with high yield and efficiency, even under solar radiation, featuring extensive impacts in using renewable energy for a cleaner process in dye, electronic, and pharmaceutical industries.

Die Verwendung von Wasser als Wasserstoffquelle zur Durchführung chemischer Reaktionen ist faszinierend, aber schwierig aufgrund der großen H‐O‐Bindungsdissoziationsenergie von Wasser (~5 eV). Tingbin Lim, Ren Su et al. zeigen in ihrem Forschungsartikel (e202204256), dass oberflächenhydroxyliertes Graphit‐Kohlenstoffnitrid nur 2.25 eV benötigt, um Wasser für Reaktionen zu aktivieren, die einen Wasserstoffatom‐Transferschritt beinhalten. Dies ermöglicht eine solargesteuerte, nachhaltige Synthesechemie.

Using water as a hydrogen source to perform chemical reactions is fascinating but challenging because of the high H−O bond dissociation energy of water (ca. 5 eV). Tingbin Lim, Ren Su, and co‐workers show in their Research Article (e202204256) that surface‐hydroxylated graphitic carbon nitride only requires 2.25 eV to activate water for reactions involving a hydrogen atom transfer step, allowing solar‐driven eco‐friendly synthetic chemistry.

The Nongtun ore deposit, located in the northwest of the Ag-Pb-Zn polymetallic district in Xidamingshan, Guangxi, is a large-scale Pb-Zn deposit. It is a newly discovered deposit in the southwest edge of the Qin-Hang metallogenic belt, for which some aspects of its genesis are still poorly understood, such as the origin and evolution of the mineralizing fluids, the precipitation mechanisms, and the genetic type. This paper draws on detailed field investigations together with new data from fluid inclusions, with a view to understanding the characteristics of ore-forming fluid and the genetic types of ore deposit.