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1. Na+-functionalized carbon dots with aggregation-induced and enhanced cyan emission

Author:
Tao, Yingfang; Lin, Jie; Wang, Deyin; Wang, Yuhua
Source:
Journal of colloid and interface science 2021 v.588 pp. 469-475
ISSN:
0021-9797
Subject:
hot water treatment,   etc   ; fluorescence; photoluminescence;     Show all 3 Subjects
Abstract:
... A new type of carbon dots that emit blue emission in aqueous state while cyan emission in solid state was synthesized by a simple hydrothermal method. The photoluminescence quantum yield of the carbon dots in aqueous state and solid state is 7.6% and 29.2%, respectively. The enhanced and red-shifted emission observed in solid state carbon dots is ascribed to surface state change caused by aggregat ...
DOI:
10.1016/j.jcis.2020.12.104

2. Ultrasensitive NO2 gas sensor based on Sb-doped SnO2 covered ZnO nano-heterojunction

Author:
Wang, Zhaohua; Zhi, Mingfeng; Xu, Manzhang; Guo, Chen; Man, Zhenwu; Zhang, Zhiyong; Li, Qiang; Lv, Yuanyuan; Zhao, Wu; Yan, Junfeng; Zhai, Chunxue
Source:
Journal of materials science 2021 v.56 no.12 pp. 7348-7356
ISSN:
0022-2461
Subject:
hot water treatment,   etc   ; nanosheets; nanowires;     Show all 3 Subjects
Abstract:
... Sb-doped SnO₂ covered ZnO nano-heterojunction (Sb-doped SnO₂/ZnO NHs) are prepared by using a microwave hydrothermal method. The effect about morphology and gas sensor performance of the SnO₂/ZnO NHs with Sb-doping is studied in detail. The SEM indicated that the morphology of SnO₂ changed from nanowires to nanosheets by Sb-doping and the growth direction of SnO₂ was vertical to the plane of ZnO f ...
DOI:
10.1007/s10853-020-05737-6

3. The effect of different crystalline phases of In2O3 on the ozone sensing performance

Author:
Sui, Ning; Cao, Shuang; Zhang, Peng; Zhou, Tingting; Zhang, Tong
Source:
Journal of hazardous materials 2021 v.418 pp. 126290
ISSN:
0304-3894
Subject:
hot water treatment,   etc   ; detection limit; oxygen; ozone;     Show all 4 Subjects
Abstract:
... Crystalline phase regulation could optimize the band gap, which has a great impact on the amount of chemisorbed gas molecules on the gas sensing materials. Herein, a facile route of hydrothermal method followed by calcination treatment was used to synthesize cubic bixbyite-type (C-In₂O₃), rhombohedral corundum-type (Rh-In₂O₃) and the mixed phase In₂O₃ (Rh+C-In₂O₃). The band gap of C-In₂O₃ was narr ...
DOI:
10.1016/j.jhazmat.2021.126290

4. Performance of functionalized monolithic silica capillary columns with different mesopore sizes using radical polymerization of octadecyl methacrylate

Author:
Hara, Takeshi; Baron, Gino V.; Hata, Kosuke; Izumi, Yoshihiro; Bamba, Takeshi; Desmet, Gert
Source:
Journal of chromatography 2021 v.1651 pp. 462282
ISSN:
0021-9673
Subject:
hot water treatment,   etc   ; chromatography; polymerization; silica; skeleton;     Show all 5 Subjects
Abstract:
... We report on the possibility to enhance the phase ratio and retention factor in silica monoliths. According to pioneering work done by Núñez et al. [1], this enhancement is pursued by applying a stationary phase layer via radical polymerization with octadecyl methacrylate (ODM) as an alternative to the customary octadecylsilylation (C18-derivatization). The difference in band broadening, retention ...
DOI:
10.1016/j.chroma.2021.462282

5. A novel Bi₂S₃/KTa₀.₇₅Nb₀.₂₅O₃ nanocomposite with high efficiency for photocatalytic and piezocatalytic N₂ fixation

Author:
Chen, Lu; Dai, Xiaoquan; Li, Xiaojing; Wang, Junfeng; Chen, Huafong; Hu, Xin; Lin, Hongjun; He, Yiming; Wu, Ying; Fan, Maohong
Source:
Journal of materials chemistry A 2021 v.9 no.22 pp. 13344-13354
ISSN:
2050-7496
Subject:
hot water treatment,   etc   ; nanocomposites; nanorods; photocatalysis;     Show all 4 Subjects
Abstract:
... A novel Bi₂S₃/KTa₀.₇₅Nb₀.₂₅O₃ (KTN) heterojunction nanocomposite was prepared through a simple two-step hydrothermal method and primarily applied in photocatalytic and piezocatalytic N₂ fixation. Bi₂S₃ closely adhered to the surface of KTN nanorods and mainly acted as electron trappers to capture the photogenerated electrons in the composite, which promotes the spatial separation of photogenerated ...
DOI:
10.1039/d1ta02270a

6. Rational design of multi-shell hollow carbon submicrospheres for high-performance microwave absorbers

Author:
Wang, Yichen; Zhou, Wei; Zeng, Guilin; Chen, Han; Luo, Heng; Fan, Xiaomeng; Li, Yang
Source:
Carbon 2021 v.175 pp. 233-242
ISSN:
0008-6223
Subject:
hot water treatment,   etc   ; absorption; carbon; crystal structure;     Show all 4 Subjects
Abstract:
... Multi-shell hollow carbon submicrospheres (CSs) were designed for the improvement in microwave absorption performance. Solid/hollow CSs with a single shell or multiple shells were successfully synthesized by a combination of hydrothermal method, calcination, and etching process. Microstructures, dielectric and microwave absorption properties in the frequency range of 2–18 GHz of these CSs were com ...
DOI:
10.1016/j.carbon.2021.01.001

7. Excellent thermoelectric performance achieved in Bi₂Te₃/Bi₂S₃@Bi nanocomposites

Author:
Zhang, Yi-Xin; Zhu, Yu-Ke; Song, Dong-Sheng; Feng, Jing; Ge, Zhen-Hua
Source:
Chemical communications 2021 v.57 no.20 pp. 2555-2558
ISSN:
1364-548X
Subject:
hot water treatment,   etc   ; microstructure; nanocomposites; nanowires;     Show all 4 Subjects
Abstract:
... A Bi₂Te₃/Bi₂S₃@Bi nanocomposite with a network microstructure was successfully synthesized via a hydrothermal method and spark plasma sintering. This composite was constructed from Bi₂Te₃ nanoparticles and Bi₂S₃@Bi nanowires, and its network structure is beneficial for obtaining excellent thermoelectric performance. A ZT peak of 1.2 at 450 K was realized for the nanocomposite sample. ...
DOI:
10.1039/d1cc00119a

8. Visible-light assisted production of hydrocarbon fuels from carbon dioxide using Cu2O@MnCo2O4 heterojunction

Author:
Mou, Qingping; Guo, Zhenlian; Chai, Yongming; Liu, Bin; Liu, Chenguang
Source:
Colloids and surfaces 2021 v.623 pp. 126707
ISSN:
0927-7757
Subject:
hot water treatment,   etc   ; carbon dioxide; irradiation; photocatalysis; photoluminescence; photoreduction; semiconductors;     Show all 7 Subjects
Abstract:
... The recent observation of global warming is a crucial concern due to the excessive emission of CO₂ from the excessive fossil fuels burning. To maintain the environment sustainably and green, it needs to reduce CO₂ emission or utilize CO₂ emitted into C₁ hydrocarbons, which can be used as fuels in many applications. Here, we have developed Cu₂O doped MnCo₂O₄ heterojunction, a photocatalytic materia ...
DOI:
10.1016/j.colsurfa.2021.126707

9. Pyrrolic nitrogen dominated the carbon dot mimic oxidase activity

Author:
Wang, Huibo; Zhang, Mengling; Wei, Kaiqiang; Zhao, Yajie; Nie, Haodong; Ma, Yurong; Zhou, Yunjie; Huang, Hui; Liu, Yang; Shao, Mingwang; Kang, Zhenhui
Source:
Carbon 2021 v.179 pp. 692-700
ISSN:
0008-6223
Subject:
hot water treatment,   etc   ; ; bioactive properties; irradiation; light; nanobiotechnology; nitrogen; oxidoreductases;     Show all 8 Subjects
Abstract:
... Carbon dots (CDs) with enzyme-like activities play crucial roles in nanobiotechnology. However, it is difficult to establish a relationship between their structure and biocatalytic properties. In this work, a series of nitrogen-doped carbon dots (TA-NCDs) were synthesized by a hydrothermal method. Their oxidase-like activity could be triggered by visible light irradiation (420 nm≤λ ≤ 700 nm). As a ...
DOI:
10.1016/j.carbon.2021.04.061

10. PEI modified orange emissive carbon dots with excitation-independent fluorescence emission for cellular imaging and siRNA delivery

Author:
Li, Rui; Wei, Fangdi; Wu, Xueqing; Zhou, Ping; Chen, Qiutong; Cen, Yao; Xu, Guanhong; Cheng, Xia; Zhang, Aixia; Hu, Qin
Source:
Carbon 2021 v.177 pp. 403-411
ISSN:
0008-6223
Subject:
hot water treatment,   etc   ; electrostatic interactions; fluorescence; glioblastoma; humans; wavelengths;     Show all 6 Subjects
Abstract:
... Although carbon dots (CDs) as a promising fluorescent nanomaterial have been studied for nearly twenty years, excitation-independent long wavelength emission CDs are rarely reported and are highly desirable for biomedical applications. Herein, we show that the excitation-independent, bright-orange-emissive, polyethylenimine-modified CDs (PEI-CDs) can be easily obtained by using 1, 2, 4-triaminoben ...
DOI:
10.1016/j.carbon.2021.02.069

11. Flower-like Mg/Fe-layered double oxide nanospheres with ultrahigh adsorption efficiency for anionic organic dyes

Author:
Mubarak, Mahfuza; Islam, Md. Shahinul; Yoon, Dong-Yun; Lee, Jun Ho; Park, Hee Jung; Bae, Jong-Seong; Lee, Ha-Jin
Source:
Colloids and surfaces 2021 v.618 pp. 126446
ISSN:
0927-7757
Subject:
hot water treatment,   etc   ; adsorbents; adsorption; cost effectiveness; dyes; nanospheres; wastewater;     Show all 7 Subjects
Abstract:
... Flower-like Mg/Fe-layered double oxide (Mg/Fe-LDO) nanospheres were synthesized using a facile one-step hydrothermal method and applied to remove anionic organic dyes, namely, Congo red (CR) and methyl blue (MB) with excellent adsorption efficiency. The Mg/Fe-LDO nanospheres showed over 99% removal efficiency within 25 min and 5 min for CR and MB, respectively. The calculated maximum removal capac ...
DOI:
10.1016/j.colsurfa.2021.126446

12. The multi-ferroelectricity in neodymium ferrite with perovskite structure

Author:
Zhao, Chao; Chen, Jiahui; Ding, Qingfeng; Shang, Mingyu
Source:
Journal of materials science 2021 v.56 no.17 pp. 10488-10493
ISSN:
0022-2461
Subject:
hot water treatment,   etc   ; ambient temperature; ferrimagnetic materials; magnetism; neodymium;     Show all 5 Subjects
Abstract:
... In this paper, single-phase orthoferrite NdFeO₃ crystals with the space group of Pbnm were successful prepared via mild hydrothermal method. The NdFeO₃ crystal performs a weak antiferromagnetic behavior by magnetic measurement. The Dzyaloshinskii Moriya interaction in NdFeO₃ crystal causes an additional canting of the antiferromagnetically ordered spins which induce the ferroelectricity. The satur ...
DOI:
10.1007/s10853-021-05975-2

13. Tunable sulfur vacancies and hetero-interfaces of FeS2-based composites for high-efficiency electromagnetic wave absorption

Author:
Liu, Jiaolong; Wang, Min; Zhang, Limin; Zang, Duyang; Liu, Hu; Francesca Liotta, Leonarda; Wu, Hongjing
Source:
Journal of colloid and interface science 2021 v.591 pp. 148-160
ISSN:
0021-9797
Subject:
hot water treatment,   etc   ; absorption; electromagnetic radiation; nanospheres; sulfur;     Show all 5 Subjects
Abstract:
... Controlling Vacancies and heterointerfaces of nano/microstuctures is very challenging, importantly, which tailors the electromagnetic (EM) parameters to develop the high-performance electromagnetic wave (EMW) absorbers. Herein, we report a strategy using various sulfur-source modifying Fe₃O₄ nanosphere by one-step hydrothermal method to prepare a series of FeS₂-based composites. Diverse sulfur sou ...
DOI:
10.1016/j.jcis.2021.01.110

14. Overcoming the carrier transport limitation in Ruddlesden–Popper perovskite films by using lamellar nickel oxide substrates

Author:
Liang, Jianghu; Zhang, Zhanfei; Zheng, Yiting; Wu, Xueyun; Wang, Jianli; Zhou, Zhuang; Yang, Yajuan; Huang, Ying; Chen, Zhenhua; Chen, Chun-Chao
Source:
Journal of materials chemistry A 2021 v.9 no.19 pp. 11741-11752
ISSN:
2050-7496
Subject:
hot water treatment,   etc   ; chemistry; electric potential difference; nickel oxide; transportation;     Show all 5 Subjects
Abstract:
... Quasi two-dimensional (2D) Ruddlesden–Popper perovskites films fabricated by a solution process are composed of multiple 2D perovskite phases, and carrier transportation is limited by low-n-value 2D perovskite phases (n = 1 and n = 2). Systematic characterization shows that BA based 2D perovskites do not form low-n-value phases, while PEA and FPEA based 2D perovskites have strong n = 1, 2 signals ...
DOI:
10.1039/d1ta01038g

15. Stabilization mechanism of arsenic-sulfide slag by density functional theory calculation of arsenic-sulfide clusters

Author:
Liu, Fansong; Xu, Qiujing; Liang, Huizhi; Wang, Haiying; Zhong, Cheng; Min, Xiaobo; Zhang, Liyuan
Source:
Journal of hazardous materials 2021 v.410 pp. 124567
ISSN:
0304-3894
Subject:
hot water treatment,   etc   ; arsenic; density functional theory; energy; slags; sulfur;     Show all 6 Subjects
Abstract:
... Stabilization of arsenic sulfur slag (As‒S slag) is of high importance to prevent the release of deadly As pollutants into environment. However, the molecular understanding on the stability of As‒S slag is missing, which in turn restricts the development of robust approach to solve the challenge. In this work, we investigated the structure-stability relationship of As‒S slag with adopting various ...
DOI:
10.1016/j.jhazmat.2020.124567

16. Dual-Emissive Persistent Luminescence Nanoparticle-Based Charge-Reversible Intelligent Nanoprobe for Persistent Luminescence-Ratio Bioimaging along with Chemo-Photothermal Synergic Therapy

Author:
Liu, Jia-Lin; Zhao, Xu; Chen, Li-Jian; Pan, Lu-Ming; Yan, Xiu-Ping
Source:
Analytical chemistry 2021 v.93 no.19 pp. 7348-7354
ISSN:
1520-6882
Subject:
hot water treatment,   etc   ; analytical chemistry; bioimaging; luminescence; therapeutics;     Show all 5 Subjects
Abstract:
... Persistent luminescence nanoparticles (PLNPs) hold great promise for bioimaging owing to no demand for in situ excitation and negligible tissue autofluorescence interference. Nevertheless, huge challenges remain in the further development of single-emissive PLNPs due to the great variation of luminescence with time after excitation ceases. Herein, we report the controllable fabrication of dual-emi ...
DOI:
10.1021/acs.analchem.1c01220

17. Development of an ultrasensitive spectrophotometric method for carmine determination based on fluorescent carbon dots

Author:
Hu, Qin; Sun, Huijuan; Liu, Lingfei; Xiao, Lixia; Yang, Zhen-Quan; Rao, Shengqi; Gong, Xiaojuan; Han, Jie
Source:
Food additives & contaminants 2021 v.38 no.5 pp. 731-740
ISSN:
1944-0057
Subject:
hot water treatment,   etc   ; detection limit; fluorescence; food matrix; spectrophotometers;     Show all 5 Subjects
Abstract:
... A high-efficiency spectrophotometric method based on nitrogen-doped fluorescent carbon dots (N-FCDs) was developed for the ultrasensitive determination of carmine (CRM) in foodstuffs. The N-FCDs were fabricated via a one-pot hydrothermal method with m-phenylenediamine as the starting material. The detection principle was based on the fluorescence quenching effect of N-FCDs by CRM, where their inte ...
DOI:
10.1080/19440049.2021.1889045

18. Examination of how variations in lignin properties from Kraft and organosolv extraction influence the physicochemical characteristics of hydrothermal carbon

Author:
Latham, Kenneth G.; Matsakas, Leonidas; Figueira, João; Rova, Ulrika; Christakopoulos, Paul; Jansson, Stina
Source:
Journal of analytical and applied pyrolysis 2021 v.155 pp. 105095
ISSN:
0165-2370
Subject:
hot water treatment,   etc   ; carbon; hydrothermal carbonization; lignin; polymerization; pyrolysis;     Show all 6 Subjects
Abstract:
... Seven different lignin samples, three from Kraft extraction and four from organosolv extraction, were subjected to hydrothermal treatment at 260℃ for four hours to assess the impact of lignin type on the physicochemical properties of the hydrothermal material. The ¹³C Solid state NMR, XPS, FTIR and SEM analysis revealed that the different sources of lignin and the extraction conditions created var ...
DOI:
10.1016/j.jaap.2021.105095

19. Bimetallic Antimony–Vanadium Oxide Nanoparticles Embedded in Graphene for Stable Lithium and Sodium Storage

Author:
Hao, Yutong; Jiang, Ying; Zhao, Luzi; Ye, Zhengqing; Wang, Ziheng; Chu, Ditong; Wu, Feng; Li, Li; Xie, Man; Chen, Renjie
Source:
ACS applied materials & interfaces 2021 v.13 no.18 pp. 21127-21137
ISSN:
1944-8252
Subject:
hot water treatment,   etc   ; electrochemistry; graphene; grinding; lithium; redox reactions; sodium;     Show all 7 Subjects
Abstract:
... Bimetallic oxides have received considerable attention as anodes for lithium/sodium-ion batteries (LIBs/SIBs) due to their high electrochemical activity and theoretical specific capacity. However, their cycling performance is limited by large volume variation, severe aggregation, and pulverization of bimetallic oxide nanoparticles during repeated metal ion insertion/extraction processes. Herein, b ...
DOI:
10.1021/acsami.0c21676

20. Distribution of Aluminum Species in Zeolite Catalysts: ²⁷Al NMR of Framework, Partially-Coordinated Framework, and Non-Framework Moieties

Author:
Chen, Kuizhi; Gan, Zhehong; Horstmeier, Sarah; White, Jeffery L.
Source:
Journal of the American Chemical Society 2021 v.143 no.17 pp. 6669-6680
ISSN:
1520-5126
Subject:
hot water treatment,   etc   ; aluminum; catalysts; elemental composition; magnetic fields; zeolites;     Show all 6 Subjects
Abstract:
... The structure of aluminum-containing moieties in and within zeolite H-ZSM-5 catalysts is a complex function of the elemental composition of the catalyst, synthesis conditions, exposure to moisture, and thermal history. ²⁷Al NMR data collected at field strengths ranging from 7.05 to 35.2 T, i.e., ¹H Larmor frequencies from 300 to 1500 MHz, reveal that Al primarily exists as framework or partially c ...
DOI:
10.1021/jacs.1c02361