{"id":29812,"date":"2025-06-18T16:18:28","date_gmt":"2025-06-18T08:18:28","guid":{"rendered":"\/phys\/?post_type=tkuisotope&#038;p=29812"},"modified":"2025-06-18T16:26:52","modified_gmt":"2025-06-18T08:26:52","slug":"direct-identification-of-o-o-bond-formation-through-three-step-oxidation-during-water-splitting-by-operando-soft-x-ray-absorption-spectroscopy-chung-li-dong","status":"publish","type":"tkuisotope","link":"\/phys\/?tkuisotope=direct-identification-of-o-o-bond-formation-through-three-step-oxidation-during-water-splitting-by-operando-soft-x-ray-absorption-spectroscopy-chung-li-dong","title":{"rendered":"Direct Identification of O-O Bond Formation Through Three-Step Oxidation During Water Splitting by Operando Soft X-ray Absorption Spectroscopy (Chung-Li Dong)"},"content":{"rendered":"\n<div class=\"wp-block-tkuwpbs5-bs5-container container\" style=\"position:relative\" block_id=\"mc1o5lhxvn2r1y3j\"><style><\/style>\n<div class=\"wp-block-tkuwpbs5-bs5-row row\">\n<div class=\"wp-block-tkuwpbs5-bs5-column col-md-12 align-self-start\">\n<p class=\"has-background\" style=\"background-color:#abb7c299\">Yu-Cheng Huang, Yujie Wu, Ying-Rui Lu, Jeng-Lung Chen, Hong-Ji Lin, Chien-Te Chen, Chi-Liang Chen, Chao Jing, Jing Zhou, Linjuan Zhang, Yanyong Wang, Wu-Ching Chou,* Shuangyin Wang,* Zhiwei Hu,* and Chung-Li Dong*, Advanced Science 2024, 11, 2401236<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-tkuwpbs5-bs5-column col-md-12 align-self-start\">\n<p class=\"has-medium-font-size\"><strong>Article Title : <\/strong>Direct Identification of O\u2500O Bond Formation Through Three-Step Oxidation During Water Splitting by Operando Soft X-ray Absorption Spectroscopy<\/p>\n\n\n\n<p class=\"has-medium-font-size\"><strong>Full Article<\/strong>:<a href=\"https:\/\/doi.org\/10.1002\/advs.202401236\">https:\/\/doi.org\/10.1002\/advs.202401236<\/a><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-tkuwpbs5-bs5-column col-md-12 align-self-start\">\n<p class=\"has-medium-font-size\">Anionic redox allows the direct formation of O\u2500O bonds from lattice oxygens and provides higher catalytic in the oxygen evolution reaction (OER) than does the conventional metal ion mechanism. While previous theories have predicted and experiments have suggested the possible O\u2500O bond, it has not yet been directly observed in the OER process. In this study, operando soft X-ray absorption spectroscopy (sXAS) at the O K-edge and the operando Raman spectra is performed on layered double CoFe hydroxides (LDHs) after intercalation with [Cr(C<sub>2<\/sub>O<sub>4<\/sub>)<sub>3<\/sub>]<sup>3\u2212<\/sup>, and revealed a three-step oxidation process, staring from Co<sup>2+<\/sup>&nbsp;to Co<sup>3+<\/sup>, further to Co<sup>4+<\/sup>&nbsp;(3d6L), and ultimately leading to the formation of O\u2500O bonds and O<sub>2<\/sub>&nbsp;evolution above a threshold voltage (1.4&nbsp;V). In contrast, a gradual oxidation of Fe is observed in CoFe LDHs. The OER activity exhibits a significant enhancement, with the overpotential decreasing from 300 to 248&nbsp;mV at 10 mA cm<sup>\u22122<\/sup>, following the intercalation of [Cr(C<sub>2<\/sub>O<sub>4<\/sub>)<sub>3<\/sub>]<sup>3\u2212<\/sup>&nbsp;into CoFe LDHs, underscoring a crucial role of anionic redox in facilitating water splitting.<\/p>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-d3969b1\" data-block-id=\"d3969b1\"><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img decoding=\"async\" loading=\"lazy\" class=\"stk-img wp-image-28939\" src=\"\/phys\/wp-content\/uploads\/2024\/11\/\u84632024112502.png\" width=\"588\" height=\"408\" srcset=\"\/phys\/wp-content\/uploads\/2024\/11\/\u84632024112502.png 588w, \/phys\/wp-content\/uploads\/2024\/11\/\u84632024112502-300x208.png 300w\" sizes=\"(max-width: 588px) 100vw, 588px\" \/><\/span><\/figure><\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"author":12,"template":"wp-custom-template-detail-4-post","meta":{"_uag_custom_page_level_css":""},"categories":[103],"tags":[],"acf":[],"featured_image_urls":{"full":"","thumbnail":"","medium":"","medium_large":"","large":"","twp-icon":"","1536x1536":"","2048x2048":""},"post_excerpt_stackable":"<p>Yu-Cheng Huang, Yujie Wu, Ying-Rui Lu, Jeng-Lung Chen, Hong-Ji Lin, Chien-Te Chen, Chi-Liang Chen, Chao Jing, Jing Zhou, Linjuan Zhang, Yanyong Wang, Wu-Ching Chou,* Shuangyin Wang,* Zhiwei Hu,* and Chung-Li Dong*, Advanced Science 2024, 11, 2401236 Article Title : Direct Identification of O\u2500O Bond Formation Through Three-Step Oxidation During Water Splitting by Operando Soft X-ray Absorption Spectroscopy Full Article:https:\/\/doi.org\/10.1002\/advs.202401236 Anionic redox allows the direct formation of O\u2500O bonds from lattice oxygens and provides higher catalytic in the oxygen evolution reaction (OER) than does the conventional metal ion mechanism. While previous theories have predicted and experiments have suggested the possible O\u2500O&hellip;<\/p>\n","category_list":"<a href=\"\/phys\/?cat=103\" rel=\"category\">journal<\/a>","author_info":{"name":"\u674e\u7b60\u92a3","url":"\/phys\/?author=12"},"comments_num":"0 comments","uagb_featured_image_src":[],"uagb_author_info":{"display_name":"\u674e\u7b60\u92a3","author_link":"\/phys\/?author=12"},"uagb_comment_info":0,"uagb_excerpt":null,"_links":{"self":[{"href":"\/phys\/index.php?rest_route=\/wp\/v2\/tkuisotope\/29812"}],"collection":[{"href":"\/phys\/index.php?rest_route=\/wp\/v2\/tkuisotope"}],"about":[{"href":"\/phys\/index.php?rest_route=\/wp\/v2\/types\/tkuisotope"}],"author":[{"embeddable":true,"href":"\/phys\/index.php?rest_route=\/wp\/v2\/users\/12"}],"wp:attachment":[{"href":"\/phys\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=29812"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/phys\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=29812"},{"taxonomy":"post_tag","embeddable":true,"href":"\/phys\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=29812"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}