Reactive Oxygen Species Sequestration Induced Synthesis of β-PbO and Its Polymorphic Transformation to α-PbO at Atomically Thin Regimes

四方晶系 材料科学 剥脱关节 正交晶系 纳米片 相(物质) 亚稳态 单层 Crystal(编程语言) 密度泛函理论 纳米技术 化学工程 晶体结构 化学物理 结晶学 石墨烯 化学 计算化学 有机化学 工程类 计算机科学 程序设计语言
作者
Aviraj Ingle,Mandeep Singh,Sherif Abdulkader Tawfik,Billy J. Murdoch,Edwin L. H. Mayes,Michelle J. S. Spencer,Rajesh Ramanathan,Benjaram M. Reddy
出处
期刊:ACS Nano [American Chemical Society]
卷期号:16 (7): 10679-10691
标识
DOI:10.1021/acsnano.2c02432
摘要

The emergence of attractive properties in materials at atomically thin regimes has seen an ongoing interest in two-dimensional (2D) materials. An aspect that has lacked focused attention is the effect of 2D material thickness on its crystal structure. As several layered materials naturally exist in mixed metastable phases, it raises an important question of whether a specific polymorph of these mixed-phase materials will be favored at atomically thin limits. This work attempts to address this issue by employing lead monoxide as a model 2D polymorphic system. We propose a reactive oxygen species (ROS) sequestration-mediated liquid-phase exfoliation (LPE) strategy for the facile synthesis of ultrathin PbO. This is followed by a suite of microscopic and spectroscopic analyses of the PbO nanosheets that reveals the polymorphic transformation of orthorhombic (β) PbO to its tetragonal (α) analogue with reduction in nanosheet thickness. The transformation process reveals an interesting crystal structure of ultrathin 2D PbO where [001]-oriented domains of α-PbO coexist alongside [100]-oriented regions of β-PbO. Density functional theory (DFT) calculations support our experimental data by revealing a higher thermodynamic stability of the tetragonal phase in PbO monolayers. These findings are likely to instigate interest in carefully evaluating the crystal structures of ultrathin 2D materials while promoting research in understanding the phase transformation across a range of 2D crystals.

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
少管我发布了新的文献求助10
刚刚
小透明发布了新的文献求助10
刚刚
1秒前
2秒前
moji完成签到 ,获得积分10
2秒前
香蕉觅云应助淡定的惜采纳,获得10
3秒前
5秒前
微笑芷蕾发布了新的文献求助30
5秒前
5秒前
Shrine发布了新的文献求助10
5秒前
cxy完成签到,获得积分10
6秒前
7秒前
7秒前
田様应助旧梦采纳,获得10
8秒前
mx发布了新的文献求助10
9秒前
寒天抒完成签到 ,获得积分10
10秒前
10秒前
QQ发布了新的文献求助10
11秒前
无情心情完成签到,获得积分10
12秒前
无情心情发布了新的文献求助10
14秒前
老大蒂亚戈应助潇湘雪月采纳,获得10
15秒前
打我呀发布了新的文献求助30
15秒前
16秒前
所所应助科研通管家采纳,获得10
16秒前
汉堡包应助科研通管家采纳,获得10
17秒前
MchemG应助科研通管家采纳,获得10
17秒前
YamDaamCaa应助科研通管家采纳,获得30
17秒前
852应助科研通管家采纳,获得10
17秒前
大模型应助科研通管家采纳,获得30
17秒前
MchemG应助科研通管家采纳,获得10
17秒前
完美世界应助科研通管家采纳,获得30
17秒前
情怀应助科研通管家采纳,获得10
17秒前
科研通AI5应助科研通管家采纳,获得10
17秒前
隐形曼青应助科研通管家采纳,获得10
17秒前
MchemG应助科研通管家采纳,获得10
17秒前
17秒前
李爱国应助深情的雁露采纳,获得10
17秒前
18秒前
盘尼西林发布了新的文献求助10
23秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989406
求助须知:如何正确求助?哪些是违规求助? 3531522
关于积分的说明 11254187
捐赠科研通 3270174
什么是DOI,文献DOI怎么找? 1804901
邀请新用户注册赠送积分活动 882105
科研通“疑难数据库(出版商)”最低求助积分说明 809174