| 2 | 1/1 | 返回列表 |
| 查看: 1617 | 回復(fù): 1 | |||
[資源]
光催化Nat. Commun:富范德華間隙的二維超薄BiOCl在純水體系高效光催化還原CO2制CO
|
|
上海交通大學(xué)張禮知教授(杰青、長江、萬人計劃領(lǐng)軍人才,https://sese.sjtu.edu.cn/faculty/view/117)攜手其博士弟子李杰(現(xiàn)為河南大學(xué)第四層次特聘教授https://phye.henu.edu.cn/info/1069/4394.htm)、石彥彪(上海交通大學(xué)博后)、毛成梁(多倫多大學(xué)博后),與大連化物所黃延強(qiáng)研究員(杰青)合作,在nature communications發(fā)表了題為“van der waals gap-rich biocl atomic layers realizing efficient, pure-water co2-to-co photocatalysis”研究論文。 該研究開發(fā)出一種高效的光催化還原二氧化碳工藝,在僅使用可見光、純水、co2和原子級富含范德華間隙的biocl納米片的情況下,高效通過光催化co2還原制備co。該biocl納米片的合成是通過與合成氣合成路線類似的氣相剝離策略實現(xiàn)的,其具有石墨烯模擬結(jié)構(gòu),基面由范德華間隙包裹。這種高范德華間隙覆蓋率(99%)會賦予納米片在性能上的兩個關(guān)鍵優(yōu)勢,即超低的激子結(jié)合能和高催化活性vdwg-bi-vo••-bi位點。這些優(yōu)點促進(jìn)了激子至電子與co2至co的轉(zhuǎn)化,從而使純水pcr的速率達(dá)到188.2 μmol g−1 h−1。此前對層狀材料的研究主要集中在剝離以獲得超薄原子層(但范德華間隙覆蓋率較低)、缺陷工程以創(chuàng)建活性位點、以及摻雜和單原子負(fù)載以活化共價鍵合面中;與之相比,本研究開發(fā)的vdwg工程策略有可能為層狀光催化劑的性能最大化增加一個維度。 文章鏈接 https://www.nature.com/articles/s41467-021-26219-6 期刊 nature communications doi 10.1038/s41467-021-26219-6 題目 van der waals gap-rich biocl atomic layers realizing efficient, pure-water co2-to-co photocatalysis 作者 yanbiao shi, jie li, chengliang mao, song liu, xiaobing wang, xiufan liu, shengxi zhao, xiao liu, yanqiang huang & lizhi zhang 摘要 photocatalytic co2 reduction (pcr) is able to convert solar energy into chemicals, fuels, and feedstocks, but limited by the deficiencies of photocatalysts in steering photon-to-electron conversion and activating co2, especially in pure water. here we report an efficient, pure water co2-to-co conversion photocatalyzed by sub-3-nm-thick biocl nanosheets with van der waals gaps (vdwgs) on the two-dimensional facets, a graphene-analog motif distinct from the majority of previously reported nanosheets usually bearing vdwgs on the lateral facets. compared with bulk biocl, the vdwgs-rich atomic layers possess a weaker excitonic confinement power to decrease exciton binding energy from 137 to 36 mev, consequently yielding a 50-fold enhancement in the bulk charge separation efficiency. moreover, the vdwgs facilitate the formation of vdwg-bi-vo••-bi defect, a highly active site to accelerate the co2-to-co transformation via the synchronous optimization of co2 activation, *cooh splitting, and *co desorption. the improvements in both exciton-to-electron and co2-to-co conversions result in a visible light pcr rate of 188.2 μmol g−1 h−1 in pure water without any co-catalysts, hole scavengers, or organic solvents. these results suggest that increasing vdwg exposure is a way for designing high-performance solar-fuel generation systems. 2021-10-13_165232.jpg 2021-10-13_165949.jpg 2021-10-13_170009.jpg 2021-10-13_170043.jpg 2021-10-13_170055.jpg |
| 2 | 1/1 | 返回列表 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 274求調(diào)劑0856材料化工 +9 | z2839474511 2026-03-11 | 10/500 |
|
|---|---|---|---|---|
|
[考研] 0703求調(diào)劑 +6 | jtyq001 2026-03-10 | 6/300 |
|
|
[考研] 材料工程,326分,求調(diào)劑 +5 | KRSLSR 2026-03-10 | 5/250 |
|
|
[考研] 0856化工原理 +5 | z2839474511 2026-03-10 | 5/250 |
|
|
[考博] 售SCI一區(qū)T0P文章,我:8.O.5.5.1.O.5.4,科目齊全,可+急 +3 | 7x4iz20zqa 2026-03-11 | 8/400 |
|
|
[考研] 工科0856專碩化學(xué)工程269能調(diào)劑嗎 +9 | 我想讀研11 2026-03-10 | 9/450 |
|
|
[考研] 081200計算機(jī)科學(xué)與技術(shù)數(shù)一英一306求調(diào)劑 +3 | intankt 2026-03-08 | 3/150 |
|
|
[考研] 大連大學(xué)化學(xué)專業(yè)研究生調(diào)劑 +3 | 琪久. 2026-03-10 | 8/400 |
|
|
[考研] 考研材料與化工,求調(diào)劑 +7 | 戲精丹丹丹 2026-03-09 | 7/350 |
|
|
[考研] 420求調(diào)劑 +3 | 莫向外求11 2026-03-10 | 3/150 |
|
|
[考研] 307求調(diào)劑 +6 | 超級伊昂大王 2026-03-10 | 6/300 |
|
|
[考研] 327求調(diào)劑 +3 | Ffff03 2026-03-10 | 3/150 |
|
|
[考研] 304求調(diào)劑(085602一志愿985) +8 | 化工人999 2026-03-09 | 8/400 |
|
|
[考博] 求材料讀博院校 +9 | yanglei131 2026-03-08 | 9/450 |
|
|
[考研] 0703化學(xué)調(diào)劑 +7 | 小奶蒼 2026-03-07 | 7/350 |
|
|
[考研] 334求調(diào)劑 +5 | Trying] 2026-03-07 | 5/250 |
|
|
[考研] 296求調(diào)劑 +4 | Xinyu Wu311 2026-03-09 | 4/200 |
|
|
[考博] 26申博自薦 +9 | 烷基八氮- 2026-03-06 | 11/550 |
|
|
[考研] 083000環(huán)境科學(xué)與工程調(diào)劑 +5 | 加油呀fxy 2026-03-07 | 6/300 |
|
|
[考研] 材料化工求調(diào)劑 +7 | 博斯特525 2026-03-06 | 8/400 |
|