Turning single bubble sonoluminescence from blue in pure water to green by adding trace amount of carbon nanodots

doi:10.1016/j.ultsonch.2021.105727

	Turning single bubble sonoluminescence from blue in pure water to green by adding trace amount of carbon nanodots
	Song, Dan 3,4,5; Xu, Wen 1,2,4; Luo, Man 3; You, Kaijun 3; Tang, Ju 1; Wen, Hua 4,5; Cheng, Xingjia 4,5; Luo, Xiaobing 3; Wang, Zhibiao 3
刊名	ULTRASONICS SONOCHEMISTRY
	2021-10-01
卷号	78
关键词	Carbon nanodots Sonoluminescence Free radical Blackbody radiation Characteristic emission
ISSN号	1350-4177
DOI	10.1016/j.ultsonch.2021.105727
通讯作者	Xu, Wen(wenxu_issp@aliyun.com) ; Wang, Zhibiao(wangzb@cqmu.edu.cn)
英文摘要	Sonoluminescence (SL) is an interesting physical effect which can convert acoustic energy into light pulses. Up to now, the microscopic mechanism of the SL has not yet been fully clear. It is known that hydroxyl radicals play the important role for SL from water. In this work, we take advantage of carbon nano-dots (CNDs) as free radical captors to modulate the hydroxyl radicals (OH center dot) in SL effect. Through studying the single bubble SL (SBSL) from CND aqueous solution (CNDAS) with trace amount of CNDs, we find that the color of SBSL is tuned dramatically from blue in water to green in CNDAS. Two different SL mechanisms can be identified from emission spectrum. One comes from blackbody-like radiation and another is attributed from the characteristic emission with identified peaks. The decrease in the yield of H2O2 in the presence of CNDs suggests the modulation effect on SL via OH center dot interacting with CNDs. By comparison of the CNDs before and after sonication, it is found that hydroxyl radicals generated during SL can take part in the chain-like oxidation of the chemical groups attached to the CNDs to form larger amount of carboxyl groups. The blackbody temperature of blackbody-like radiation decreases from 15,600 K in water to 11,300 K in CNDAS. Moreover, the emission from hydroxyl radicals and two new luminescent centers related to carboxyl groups are introduced in SL from CNDAS. These important and interesting findings indicate that by adding trace amount of CNDs in water, the effect of SBSL can be significantly modulated, which can provide a macroscopic phenomenon for gaining an insight into the microscopic mechanism of the SL effect.
资助项目	National Natural Science foundation of China[81127901] ; National Natural Science foundation of China[U206720039] ; National Natural Science foundation of China[U193010069] ; Shenzhen Science and Technology Program[KQTD20190929173954826]
WOS关键词	GRAPHENE QUANTUM DOTS ; MULTIBUBBLE SONOLUMINESCENCE ; HIGH-RESOLUTION ; EMISSION ; CAVITATION ; DYNAMICS ; SPECTRA ; ULTRASOUND ; EFFICIENCY ; RADICALS
WOS研究方向	Acoustics ; Chemistry
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000703600200005
资助机构	National Natural Science foundation of China ; Shenzhen Science and Technology Program
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/124998]
专题	中国科学院合肥物质科学研究院
通讯作者	Xu, Wen; Wang, Zhibiao
作者单位	1.Yunnan Univ, Sch Phys & Astron, Kunming 650000, Yunnan, Peoples R China 2.Micro Opt Instruments Inc, Shenzhen 518118, Peoples R China 3.Chongqing Med Univ, Coll Biomed Engn, Key Lab Ultrasound Med & Engn, Chongqing 400010, Peoples R China 4.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, HFIPS, Hefei 230031, Peoples R China 5.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Song, Dan,Xu, Wen,Luo, Man,et al. Turning single bubble sonoluminescence from blue in pure water to green by adding trace amount of carbon nanodots[J]. ULTRASONICS SONOCHEMISTRY,2021,78.
APA	Song, Dan.,Xu, Wen.,Luo, Man.,You, Kaijun.,Tang, Ju.,...&Wang, Zhibiao.(2021).Turning single bubble sonoluminescence from blue in pure water to green by adding trace amount of carbon nanodots.ULTRASONICS SONOCHEMISTRY,78.
MLA	Song, Dan,et al."Turning single bubble sonoluminescence from blue in pure water to green by adding trace amount of carbon nanodots".ULTRASONICS SONOCHEMISTRY 78(2021).