24小时热门版块排行榜    

查看: 24427  |  回复: 934
当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖

htj5170

木虫 (正式写手)


[资源] 2011新书光催化Topics in Current Chemistry:Photocatalysis

Photocatalysis

Preface
Solar energy is the only renewable and carbon neutral energy source of sufficient
scale to replace fossil fuels. Direct conversion of this energy into clean fuels is one
of the most important scientific challenges of the 21st century. In this context, both hydrogen production from solar water splitting and carbon dioxide conversion to organics are obviously attractive, being potentially convenient and clean methods
to store solar energy in energy rich molecules which can be employed as virtually
inexhaustible fuel sources.
Although the realization of a molecular level system mimicking natural photo-
synthesis for the production of solar fuels is certainly fascinating from a fundamen-
tal viewpoint, the achievement of efficient water splitting has so far been limited by
a small driving force and kinetic complications arising from the need to realize a
multiple proton coupled charge transfer, which is necessary to simultaneously
overcome the demanding kinetics of water oxidation and reduction. For these
reasons either sacrificial hole or electron scavengers have been coupled to most
molecular level charge separators.
Since the experiment of Fujishima and Honda in 1972, the direct use of semi-
conductor photoelectrodes or nanoparticles, have appeared to be an alternative way
for achieving photoinduced water splitting, thanks to the possibility of obtaining,
with a practically unitary quantum yield, highly energetic charge carriers that can
induce the required electrochemical reactions at the solid/electrolyte interface.
Photoanodes based on n-type metal oxides like TiO2,WO3 and Fe2O3 have been
intensely studied, since, at appropriate pH, they couple ease of fabrication, high
chemical stability in aqueous solution under evolving oxygen conditions, and
reasonably high incident light to current generation when operated in a photoelec-
trochemical cell.
On the other hand, the development of molecular systems and interfaces for the
conversion of carbon dioxide into energy rich molecules represents an important
technological and environmental challenge due to the abundance of CO2 in the
biosphere that contributes significantly to the greenhouse effect. In this context
important research activities are directed towards the preparation of photocatalysts
containing a photosensitizer unit, which initiates photochemical one-electron
ixtransfer events, and a catalyst which stores reducing equivalents to achieve multi-
electron reduction of CO2.
Finally, Photocatalysis is particularly relevant in order to realize chemical trans-
formations of synthetic interest with a minimal environmental impact. In fact, pho-
tochemical reactions require milder conditions than thermal processes and may
allow for the conception of short and efficient reaction sequences, minimizing side
processes.
The research discussed within the framework of this volume aims to identify and
provide solutions to these problems through the application of solar energy conver-
sion schemes which involve the use of regenerative photoelectrochemical, photo-
electrolytic or photoelectrosynthetic cells in which solar energy can be stored into
chemical fuels and in the development of photocatalytic processes for selective
photooxidation of organic compounds.
                                                                  Carlo Alberto Bignozzi
                                                                     Stefano Caramor[ Last edited by htj5170 on 2011-9-22 at 21:47 ]
回复此楼
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

htj5170

木虫 (正式写手)


送人玫瑰,手有余香。
201楼2011-10-10 12:31:19
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 935 个回答

clijoybook

金虫 (小有名气)


★★★★★ 五星级,优秀推荐

顶啊
2楼2011-09-21 16:55:25
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

farfaraway08

铜虫 (著名写手)


★★★ 三星级,支持鼓励

辛苦了楼主,谢谢谢谢
7楼2011-09-22 09:04:04
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
简单回复
2011-09-21 21:47   回复  
五星好评  
xtliu9楼
2011-09-23 08:14   回复  
五星好评  
chemali11楼
2011-09-23 08:56   回复  
三星好评  
2011-09-23 08:56   回复  
五星好评  
xiaoshm13楼
2011-09-23 09:00   回复  
五星好评  顶一下,感谢分享!
2011-09-23 09:14   回复  
五星好评  顶一下,感谢分享!
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[论文投稿] 投稿被一个审稿人恶意评审了怎么样? +5 1chen 2024-06-14 7/350 2024-06-15 23:15 by xy66xy
[考博] 上海交大招收材料化学方向科研助理/“申请考核”博士(请勿回复帖子或站内投条) +3 灵梦and紫 2024-06-12 4/200 2024-06-15 20:58 by 1822836277
[基金申请] Nature 11日发文,中国著名学者们称造假迫不得已 +5 babu2015 2024-06-14 5/250 2024-06-15 20:40 by lc231001
[基金申请] 希望今年自己国自然面上项目和老婆青年项目能中! +5 恐龙爸爸 2024-06-14 5/250 2024-06-15 20:36 by wanghuawei
[教师之家] 请问事业编制和年薪制冲突吗? +6 ZHONGWU_U 2024-06-14 6/300 2024-06-15 20:16 by Ermito
[基金申请] 2024国社科通讯评审 +9 qsd10086 2024-06-13 14/700 2024-06-15 15:51 by thesuna
[考博] 2025考博 +4 自强不息a?a 2024-06-15 6/300 2024-06-15 12:36 by 自强不息a?a
[论文投稿] 求机械类四区sci推荐 5+3 迷茫小旷 2024-06-14 4/200 2024-06-15 11:25 by bobvan
[硕博家园] 竟然失眠了 +10 zmr8 2024-06-09 10/500 2024-06-15 09:54 by tjushede
[基金申请] 有没有机械的前辈分享一下评上海优都是什么成果啊 +7 wulala800 2024-06-10 7/350 2024-06-15 09:33 by 晓目崇
[论文投稿] 审稿问题:为什么荧光激发波长和紫外吸收波长差的大? 10+4 sdawege 2024-06-14 8/400 2024-06-14 22:39 by 东北读书人
[考博] 申博找导师 +4 疏影横斜水清浅3 2024-06-13 6/300 2024-06-14 14:31 by zxl_1105
[基金申请] 国自然基金公布的时候基金号有吗 +8 潇洒怡惜 2024-06-13 11/550 2024-06-14 11:24 by JRfei
[基金申请] 化学会年会改成一年开一次了? +5 babu2015 2024-06-12 13/650 2024-06-14 10:46 by babu2015
[论文投稿] ACS Nano投稿后分配到副编辑手里12天了,能确定送审了吗? +5 潇洒怡惜 2024-06-12 10/500 2024-06-14 09:56 by 潇洒怡惜
[基金申请] 工材E10口函评结束了吗 10+3 我1的飞翔 2024-06-13 5/250 2024-06-14 06:35 by nono2009
[基金申请] 连续两年医学口青年项目初审体会 +11 进击的荣耀 2024-06-09 18/900 2024-06-13 17:27 by 进击的荣耀
[基金申请] C口食品 +6 好好不过分 2024-06-09 19/950 2024-06-13 12:26 by zydemon525
[找工作] 成都产品质量检测研究院 200+3 鲸鱼663 2024-06-11 8/400 2024-06-13 08:10 by 加纳居士
[硕博家园] 申博 +3 悦悦小小鱼 2024-06-12 3/150 2024-06-12 15:11 by chen5805
信息提示
请填处理意见