JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2024
·
IF 1.5
Gao Kai,Shi Yunfeng,An Kexin,Tan Jun,Zhang Yanna,Dong Jiajie,Yu Weiyue,Lin Haipeng
A hydrothermal method which can convert free cesium ions into stable pollucite at low temperatures was established in this work, avoiding any evaporation pollution during the disposal of cesium containing waste. Meanwhile, rapid synthesis under hydrothermal conditions was achieved using seed guidance, which shorten the growth time of pollucite crystals to 8 h, and making the treatment and disposal of cesium containing wastewater faster. Standard leaching test results show that the leaching rate of Cs was very low (< 3.5 × 10 −7 g·m 2 ·d), it still has good thermal stability at a temperature of 1300 °C, when the cesium content in pollucite reaches 20%.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Optical Materials
·
2024
·Vol. 12
·期 22
·2400648
·
IF 8
Shiwei Zhang,Jiurong Li,Xiao Gong
Carbon nanodots (CDs) possess exceptional fluorescence properties, which have been extensively studied in the fields of fluorescence detection and anti-counterfeiting information. However, the exploration of CDs with simple and fast synthesis paths, secure, and efficient encryption properties, remains a challenge. The rapid synthesis of orange CDs (O-CDs) is reported with a high photoluminescence quantum yield (PLQY) of 57.6% within 10 min at atmospheric pressure using a one-step pyrolysis method. The O-CDs exhibit a dual-emission property, with a blue emission peak at 425 nm and a strong orange emission peak at 590 nm. The dual-emission peaks of O-CDs can allow for fast orange/blue switching of fluorescence color with changes in the acid-base environment. O-CDs can serve as effective fluorescent probes for pH detection, depending on their fluorescence wavelength and intensity. Additionally, O-CDs have potential for fluorescence anti-counterfeiting. When exposed to NH 3 gas, O-CDs fluorescent ink rapidly (1 s) transitions from orange fluorescence to blue fluorescence, and then quickly (4 s) reverts back to orange fluorescence when the gas environment changes to HCl gas atmosphere. Thus, O-CDs fluorescent inks offer several advantages, including high fluorescence intensity, fast response, recyclability, and lossless encryption/decryption in “on-off-on” double encryption anti-counterfeiting.
研究领域:
材料科学
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化学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2016
·
IF 3.349
Chen Liu,Lu Bai,Jianming Zhang,Deng Hu,Meng Li,Gaofeng Zeng,Yanfeng Zhang,Wei Wei,Yuhan Sun
Rapid synthesis and characterization of all-silica Deca-Dodecasil 3 Rhombohedral (DD3R) zeolite were systematically studied with (NH 4 ) 2 SiF 6 as silica source. The effects of gel recipe, synthesis temperature and time, seeding, aging and silica source were investigated systematically. Big DD3R crystals (50–150 μm) with various morphologies (hexagonal plate, polyhedron and rhombohedron) were obtained by tuning the synthesis temperature, time, seeding and aging. Compared with other silica sources, (NH 4 ) 2 SiF 6 is very reactive which enhances the nucleation and crystal growth of DD3R zeolite significantly. At 220 °C, highly crystalline DD3R was obtained in 12 h without seeding, which is the fastest synthesis up to now. Aging and seeding reduced the synthesis time substantially and led to smaller crystals. With the help of seeding and aging, pure DD3R crystals were obtained in 6 d at 100 °C, which opens the door to synthesis at low temperature and ambient pressure. Mixed silica sources can reduce the consumption of expensive (NH 4 ) 2 SiF 6 . Higher calcination temperature is required for the complete template removal of the big DD3R crystals obtained in this study, which hinders the diffusion of oxidation products from the template. Zeolites SGT and DOH are competing phases in the synthesis of DD3R. The introduction of Al into the mother liquor led to the formation of zeolite SGT.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2021
·
IF 3.764
Zhongwen Dong,Xinyi Wang,Weifeng Chu,Chuanyu Yang,Yanan Wang,Lin Mei,Dongpu Zhao,Wenjie Xin,Shenglin Liu,Hongxia Wang,Yongchen Shang,Longya Xu
A fast synthetic methodology of β-zeolite with the assistance of γ-butyrolactone (GBL) has been developed in this paper, and the synthetic parameters are systematically investigated to obtain β-zeolite efficiently. Compared to the conventional synthetic system with a crystallization time of 120 h, GBL promotes the crystallization of β-zeolite in a much shorter time of 24 h. An accelerated nucleation mechanism of β-zeolite assisted by GBL is unraveled by X-ray diffraction, scanning electron microscopy, thermogravimetry–differential thermal analysis, Fourier transform infrared spectroscopy, and NMR techniques. The results demonstrate that GBL can adjust the pH value of the initial gels and enhance the combination of TEA+ with aluminosilicate species; in the meantime, the Hoffmann degradation of TEAOH is suppressed. In addition, the β-catalyst obtained with the assistance of GBL exhibits both a higher selectivity of tert-butylbenzene and excellent catalytic stability in the alkylation of benzene with isobutylene compared with the commercial β-catalyst with a similar SiO2/Al2O3 molar ratio.
研究领域:
化学工程
·
催化材料
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产品关联
DOI
高影响因子
Materials Research Express
·
2020
·Vol. 7
·期 2
·025029
·
IF 1.929
Junliang Lv,Xianhe Sun,Qiuqiang Zhan,Sailing He,Erik Forsberg
We report on a rapid method to synthesize gold nanobipyramids that utilizes a hexagonal liquid crystal as a frame, suggesting a liquid crystal accelerated growth process. The method represents an improvement in processing time as compared to previously reported methods. Furthermore, as the bulk of the total processing time is required by a purification step, the method presented in this paper holds the promise of an order of magnitude improvement of processing time by further optimization of the growth process that would eventually eliminate the need for purification.
研究领域:
纳米材料科学
·
化学合成
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2020
·
IF 3.573
Yanshu Luo,Bingqiong Tan,Xianghui Liang,Shuangfeng Wang,Xuenong Gao,Zhengguo Zhang,Yutang Fang
MIL-100(Fe) has been proven to have good hydrothermal stability and high vapor uptake and is considered as a promising dehumidification material. However, reduction of the production cost and assembly of the adsorbent and glass fiber paper substrate into the MIL-100(Fe) monolith are challenging. This work presented a dry gel conversion strategy for the rapid synthesis of the MIL-100(Fe) monolith at low temperatures. The porosity and crystalline phase of the products obtained under different crystallization temperatures and times were carefully studied. XRD and SEM characterization indicated that the MIL-100(Fe) crystal could be conveniently synthesized on the substrate at a low temperature of 50–70 °C and in a short time of 2–6 h. The spherical particles assembled from crystals dispersed evenly and tightly on the glass fiber paper. The synthesized MIL-100(Fe) monolith had a thickness of about 270 μm and a MIL-100(Fe) loading of 77.7%. Dynamic and static water vapor adsorption tests revealed that the monolithic adsorbent obtained at 50 °C for 6 h had the largest vapor saturation adsorption capacity (0.581 g/g) and the fastest adsorption rate. Moreover, the monolith owned a low regeneration temperature (below 80 °C) and a satisfactory cycle stability. Convenient equipment, mild synthetic conditions, low renewable energy consumption, and good performance will promote its application in the rotary dehumidification system.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF POROUS MATERIALS
·
2020
·Vol. 27
·期 4
·1241-1251
·
IF 2.183
Huang Siqi,Wu Xiaoxu,Li Zhi,Shi Long,Zhang Yan,Liu Qiong
In this work, monolithic silica aerogels were prepared in pure water within 4 h by using MTMS as the precursor under ambient pressure drying (APD). The effects of the volume ratio of H 2 O/MTMS, CTAB content and NH 3 ·H 2 O concentration on the properties of MTMS-based aerogels (MSA) were investigated experimentally. The realization of the rapid synthesis of MSA under APD is attributed to getting rid of the aging process, solvent exchange and surface modification. It demonstrates that the microstructure of MSA is comprised of coralloid branches. Furthermore, the greater volume ratio of H 2 O /MTMS, larger CTAB content and smaller NH 3 ·H 2 O concentration cause relatively slimmer coralloid branches, smaller pores and weakened connectivity of skeletons. It also finds that the MSA with a greater volume ratio of H 2 O/MTMS presents larger Young’s modulus and smaller compressive stress, which is because of the correspondingly different microstructures. The as-prepared MSA shows a low density of 0.064 g/cm 3 and a contact angle as high as 143.4°, which provides their potentials for some engineering applications.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2023
·Vol. 106
·期 10
·6074-6084
·
IF 3.9
Yunjie Gou,Guangdong Li,Wang Sun,Jinshuo Qiao,Kening Sun,Zhenhua Wang
LiCoO 2 (LCO) has been widely adopted as the electrode for lithium-ion batteries (LIBs) which provide a solution for settling problems referring to energy and environment. The demand for rapid and controllable synthesis of LCO increases dramatically. In this work, reactive flash sintering (RFS), for the first time, was introduced to synthesize LCO rapidly and controllably based on simple oxide precursors. The as-prepared LCO, investigated by physicochemical property characterization, showed well-constructed and high crystallinity and controllable morphologies, in which the grain size varied with the magnitude of the applied limited current value, allowing for grain size modulation. Furthermore, the as-prepared LCO exhibited excellent performance in cyclic stability and rate capacity by contrast with that synthesized by the conventional solid-phase sintering method. This is admittedly attributed to better crystallinity and less lithium loss. Therefore, RFS provides a new approach for the manufacture of LCO electrode and has the potential to be applied to other electrode materials for LIBs.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
Sustainable Materials and Technologies
·
2025
·
IF 9.2
Chengcheng Liu,Kun Lv,Jiangtao Yu,Xueyan Que,Jialei Liu,Xingnan Ouyang,Moyan Li,Yaru Tian,Jian Song,Jinxing Wang,Jianming Li
A steadily increasing research interest has been devoted to carbon quantum dots (CQDs) as a highly promising visible-light-triggered material. However, the commonly used hydrothermal reaction method to produce CQDs is usually a lengthy and tedious process, which requires elevated temperatures. Herein, we report for the first time the rapid synthesis of highly conjugated CQDs using lignin as the precursor activated by high-energy electron-beam radiation from an electron accelerator at different doses (0–400 kGy). Lignin was used as the raw material for the generation of lignin fractions with different molecular weights by employing electron-beam radiation under ambient conditions within minutes, and the CQDs were directly obtained via centrifugation and dialysis. The CQDs obtained at an irradiation dose of 250 kGy have the highest fluorescence intensity. At a radiation dose of 250 kGy, the electron beam depolymerizes lignin into numerous small molecule fragments; these low-molecular-weight units can form a large number of highly conjugated carbon core structures (C=C), leading to a remarkable enhancement of the fluorescence intensity of CQDs. The synthesized CQDs have a positive effect on tomato photosynthesis at a concentration as low as 250 mg/L. This study establishes a new strategy for the large-scale synthesis of CQDs with higher fluorescence intensities, and the findings provide valuable ideas for future studies of electron-beam radiation-assisted synthesis of CQDs.
研究领域:
材料科学
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植物学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Xiaoyilun Peng,Jinyong Zhang,Lin Ren,Weimin Wang,Zhengyi Fu,Fan Zhang
At present, the industrial production of boron carbide requires high energy consumption and time-consuming. Herein, a “field-assisted synthesis” method was developed for the rapid synthesis of boron carbide nanopowders using boric acid and nano-carbon black as raw materials by applying a current size of 2 A directly through the mixed powders at 1600 °C and held it for 5 min. The phase composition and morphology of the product were characterized by XRD, SEM, EDS, and TEM. The results showed that the participation of current resulted in almost complete reaction of the raw material at 1600 °C, and nanoscale boron carbide was generated due to rapid nucleation at high temperatures. This work can provide important reference for the subsequent preparation of nano boron carbide and further expand the development field of boron carbide.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Gang Chen,Maotang Wang,Mingzhi Jiao,Xianglin Kong,Lei Zhao
The rapid and controllable incorporation of pseudocapacitive materials onto the carbon cloth (CC) holds great promise for wearable supercapacitor devices. However, efficiently activating CC and achieving a high mass loading of electroactive materials remain challenging with conventional synthetic methods, which involve complex treatment and prolonged heating. This work presents a universal two-step strategy for the rapid preliminary activation of CC (PACC) and synthesis of composites using ultrafast high-temperature thermal shock (HTS) for CC/oxides-based electrodes. Pre-treated CC loaded with precursor materials is exposed to temperatures that rise swiftly to 1000 °C within 200 ms. Three electrical pulses, each lasting 100 ms, are applied and the entire process takes approximately 10 s. As a proof-of-concept, we synthesize a PACC/Co 3 O 4 electrode material, which delivers a high specific capacity of 408 mF cm −2 at 0.2 mA cm −2 , 97 % capacity retention at 2 mA cm −2 , and excellent stability after 20,000 cycles. The flexible supercapacitor based on PACC/Co 3 O 4 electrodes deliveres a high capacity and stable performance at various bending states. Moreover, our HTS method can be extended to other transition metal oxide (TMO) incorporated with the activated CC. The facile and efficient method paves the way for the synthesis of various CC-based supercapacitor materials.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2018
·
IF 2.873
Song Ye,Ping Xiao,Huazhen Liao,Song Li,Deping Wang
We developed a facile approach for the fast synthesis of ultrasmall and monodisperse β-NaYF 4 :Yb 3+ , Er 3+ nanocrystals down to 5.3 nm with the assistant of oleate ligands, based on which the highly bright sub-10 nm β-NaYF 4 :Yb 3+ , Er 3+ @NaYF 4 core-shell nanocrystals with three order of magnitude increased upconversion emission were successfully obtained by a seed-mediated growth method. The reaction time and temperature dependent experimental results implied that the introduciton of extra oleate ligands can both promote the α-to-β phase transition and impeded the crystal growth of NaYF 4 , which is due to the oleate ligand induced orderly arrangement of Y 3+ and capping effect, respectively. It is expected that the oleate ligands mediated phase transition and size evaluation, demonstrated here in NaYF 4 :Yb 3+ , Er 3+ NCs, is also applicable to other lanthanide-doped upconversion nanocrystals.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）