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Substrate regulation leads to differential responses of microbial ammonia-oxidizing communities to ocean warming 期刊论文
NATURE COMMUNICATIONS, 2020, 11 (1)
作者:  Zheng, Zhen-Zhen;  Zheng, Li-Wei;  Xu, Min Nina;  Tan, Ehui;  Hutchins, David A.;  Deng, Wenchao;  Zhang, Yao;  Shi, Dalin;  Dai, Minhan;  Kao, Shuh-Ji
收藏  |  浏览/下载:11/0  |  提交时间:2020/07/21
A seawater throttle on H-2 production in Precambrian serpentinizing systems 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (26) : 14756-14763
作者:  Tutolo, Benjamin M.;  Seyfried, William E., Jr.;  Tosca, Nicholas J.
收藏  |  浏览/下载:9/0  |  提交时间:2020/06/22
serpentinization  Precambrian  atmosphere redox state  origins of life  
Permo-Triassic boundary carbon and mercury cycling linked to terrestrial ecosystem collapse 期刊论文
NATURE COMMUNICATIONS, 2020, 11 (1)
作者:  Dal Corso, Jacopo;  Mills, Benjamin J. W.;  Chu, Daoliang;  Newton, Robert J.;  Mather, Tamsin A.;  Shu, Wenchao;  Wu, Yuyang;  Tong, Jinnan;  Wignall, Paul B.
收藏  |  浏览/下载:11/0  |  提交时间:2020/06/16
Fast sulfate formation from oxidation of SO2 by NO2 and HONO observed in Beijing haze 期刊论文
NATURE COMMUNICATIONS, 2020, 11 (1)
作者:  Wang, Junfeng;  Li, Jingyi;  Ye, Jianhuai;  Zhao, Jian;  Wu, Yangzhou;  Hu, Jianlin;  Liu, Dantong;  Nie, Dongyang;  Shen, Fuzhen;  Huang, Xiangpeng;  Huang, Dan Dan;  Ji, Dongsheng;  Sun, Xu;  Xu, Weiqi;  Guo, Jianping;  Song, Shaojie;  Qin, Yiming;  Liu, Pengfei;  Turner, Jay R.;  Lee, Hyun Chul;  Hwang, Sungwoo;  Liao, Hong;  Martin, Scot T.;  Zhang, Qi;  Chen, Mindong;  Sun, Yele;  Ge, Xinlei;  Jacob, Daniel J.
收藏  |  浏览/下载:18/0  |  提交时间:2020/06/09
Mantle data imply a decline of oxidizable volcanic gases could have triggered the Great Oxidation 期刊论文
NATURE COMMUNICATIONS, 2020, 11 (1)
作者:  Kadoya, Shintaro;  Catling, David C.;  Nicklas, Robert W.;  Puchtel, Igor S.;  Anbar, Ariel D.
收藏  |  浏览/下载:6/0  |  提交时间:2020/06/09
The Great Oxidation Event preceded a Paleoproterozoic "snowball Earth" 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (24) : 13314-13320
作者:  Warke, Matthew R.;  Di Rocco, Tommaso;  Zerkle, Aubrey L.;  Lepland, Aivo;  Prave, Anthony R.;  Martin, Adam P.;  Ueno, Yuichiro;  Condon, Daniel J.;  Claire, Mark W.
收藏  |  浏览/下载:9/0  |  提交时间:2020/06/09
quadruple sulfur isotopes  mass independent fractionation  Great Oxidation Event  snowball Earth  
A multiomic analysis of in situ coral-turf algal interactions 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (24) : 13588-13595
作者:  Roach, Ty N. F.;  Little, Mark;  Arts, Milou G. I.;  Huckeba, Joel;  Haas, Andreas F.;  George, Emma E.;  Quinn, Robert A.;  Cobian-Guemes, Ana G.;  Naliboff, Douglas S.;  Silveria, Cynthia B.;  Vermeij, Mark J. A.;  Kelly, Linda Wegley;  Dorrestein, Pieter C.;  Rohwer, Forest
收藏  |  浏览/下载:9/0  |  提交时间:2020/06/09
holobiont  metabolomics  metagenomics  microbial ecology  coral reefs  
Abiotic hydrogen (H-2) sources and sinks near the Mid-Ocean Ridge (MOR) with implications for the subseafloor biosphere 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (24) : 13283-13293
作者:  Worman, Stacey L.;  Pratson, Lincoln F.;  Karson, Jeffrey A.;  Schlesinger, William H.
收藏  |  浏览/下载:12/0  |  提交时间:2020/06/09
biogeochemistry  origins of life  hydrogen  Mid-Ocean Ridge  microbes  
Unexpected formation of oxygen-free products and nitrous acid from the ozonolysis of the neonicotinoid nitenpyram 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (21) : 11321-11327
作者:  Wang, Weihong;  Ezell, Michael J.;  Lakey, Pascale S. J.;  Aregahegn, Kifle Z.;  Shiraiwa, Manabu;  Finlayson-Pitts, Barbara J.
收藏  |  浏览/下载:7/0  |  提交时间:2020/05/13
neonicotinoid  nitenpyram  ozone  
Molecular tuning of CO2-to-ethylene conversion 期刊论文
NATURE, 2020, 577 (7791) : 509-+
作者:  Li, Fengwang;  39;Brien, Colin P.
收藏  |  浏览/下载:11/0  |  提交时间:2020/07/03

The electrocatalytic reduction of carbon dioxide, powered by renewable electricity, to produce valuable fuels and feedstocks provides a sustainable and carbon-neutral approach to the storage of energy produced by intermittent renewable sources(1). However, the highly selective generation of economically desirable products such as ethylene from the carbon dioxide reduction reaction (CO2RR) remains a challenge(2). Tuning the stabilities of intermediates to favour a desired reaction pathway can improve selectivity(3-5), and this has recently been explored for the reaction on copper by controlling morphology(6), grain boundaries(7), facets(8), oxidation state(9) and dopants(10). Unfortunately, the Faradaic efficiency for ethylene is still low in neutral media (60 per cent at a partial current density of 7 milliamperes per square centimetre in the best catalyst reported so far(9)), resulting in a low energy efficiency. Here we present a molecular tuning strategy-the functionalization of the surface of electrocatalysts with organic molecules-that stabilizes intermediates for more selective CO2RR to ethylene. Using electrochemical, operando/in situ spectroscopic and computational studies, we investigate the influence of a library of molecules, derived by electro-dimerization of arylpyridiniums(11), adsorbed on copper. We find that the adhered molecules improve the stabilization of an '  atop-bound'  CO intermediate (that is, an intermediate bound to a single copper atom), thereby favouring further reduction to ethylene. As a result of this strategy, we report the CO2RR to ethylene with a Faradaic efficiency of 72 per cent at a partial current density of 230 milliamperes per square centimetre in a liquid-electrolyte flow cell in a neutral medium. We report stable ethylene electrosynthesis for 190 hours in a system based on a membrane-electrode assembly that provides a full-cell energy efficiency of 20 per cent. We anticipate that this may be generalized to enable molecular strategies to complement heterogeneous catalysts by stabilizing intermediates through local molecular tuning.


Electrocatalytic reduction of CO2 over copper can be made highly selective by '  tuning'  the copper surface with adsorbed organic molecules to stabilize intermediates for carbon-based fuels such as ethylene