The triboelectric nanogenerator shows a broad application potential in wind energy collection and wind speed sensing. However, it is difficult to realize wind energy collection and realtime wind speed monitoring in one simple device without external power support. Here, a highperformance dualmode triboelectric nanogenerator is proposed to simultaneously collect wind energy efficiently and ...
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WhatsApp: +86 18838072829Hou D F, Li M L, Yan C, Zhou L, Liu Z Y, Yang W, Yang M B. Mechanochemical preparation of thermoplastic cellulose oleate by ball milling. Green Chemistry, 2021, 23(5): . Article CAS Google Scholar Samaranayake G, Glasser W G. Cellulose derivatives with low DS. I. A novel acylation system.
WhatsApp: +86 18838072829Borophene has been predicted to have outstanding catalytic activity owing to its extreme electron deficiency and abundant active sites. However, no experimental results have been still reported for borophene application in highefficiency catalysis. Here, a borophene nanosheet was prepared on a carbon cloth surface via chemical vapor deposition. The boron source is sodium borohydride and the ...
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WhatsApp: +86 18838072829China Agricultural University: Beijing, Beijing, CN . 198509 ... Solventfree synthesis of magnetic biochar and activated carbon through ballmill extrusion with Fe3O4 nanoparticles for enhancing adsorption of methylene blue ... Andrew R. Zimmerman; Feng He; Jianjun Chen; Lujia Han; Hao Chen; Xin Hu; Bin Gao Show more detail. Source ...
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WhatsApp: +86 18838072829In this study, the grinding system of the stirred mill was designed and manufactured by Shenyang Wu Huan Science and Technology Co., Ltd. The specifications of the laboratoryscale stirred mill employed in our tests are listed in Table the grinding system, the slurry overflowing from the top of the cylinder enters a peristaltic pump and returned to the bottom of the cylinder which ensures ...
WhatsApp: +86 18838072829Yaqun HE | Cited by 3,694 | of China University of Mining and Technology, Xuzhou | Read 168 publications | Contact Yaqun HE
WhatsApp: +86 18838072829Producing hydrogen through water electrolysis is one of the most promising green energy storage and conversion technologies for the longterm development of energyrelated hydrogen technologies. MoS2 is a very promising electrocatalyst which may replace precious metal catalysts for the hydrogen evolution reaction (HER). In this work, doughtyelectronegative heteroatom defects (halogen atoms ...
WhatsApp: +86 18838072829Dec 11, 2016. This type of mill consists of two types of rings separated by a series of large balls, like a thrust bearing. The lower ring rotates, while the upper ring presses down on the balls ...
WhatsApp: +86 18838072829Ball mill, impact mill and jet mill are the most commonly used mechanical grinding equipment. ... (GB/T ), produced by China United Cement Corporation, which is specially used for the detection of concrete admixtures. It is made by grinding Portland cement clinker and gypsum. The RCFA came from a power plant in Shanxi province, China ...
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WhatsApp: +86 18838072829Liu W, Cheng L, Hou ZG, et al. (2016) An inversionfree predictive controller for piezoelectric actuators based on a dynamic linearized neural network model. ... (2010) Disturbance rejection of ball mill grinding circuits using DOB and MPC. Powder Technology 198(2): 219228. Crossref. ISI. Google Scholar. Yin S, Yang H, Kaynak O (2017 ...
WhatsApp: +86 18838072829As important industrial materials, microporous zeolites are necessarily synthesized in the presence of solvents such as in hydrothermal, solvothermal, and ionothermal routes. We demonstrate here a simple and generalized solventfree route for synthesizing various types of zeolites by mixing, grinding, and heating solid raw materials. Compared with conventional hydrothermal route, the avoidance ...
WhatsApp: +86 18838072829Previous research reports that more than 75% of soils in karst regions in China contain > mg kg −1 Mo (up to mg kg −1), which is much higher than that of background value of Chinese ( mg kg −1) (Hou et al., 2020). However, the enrichment mechanisms and factors influencing soil Mo in karst regions are poorly understood.
WhatsApp: +86 18838072829Chitin nanofibrilbased flame retardant was developed by disintegrating chitin by ballmill, followed by phosphorylation with P2O5. The combustion performance of the paper loaded with the product was evaluated by a microcombustion calorimeter, limiting oxygen index (LOI), and flammability test; paper loaded with 30% retardant gave LOI of 30%, peak heat release rate 62% lower than the control ...
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WhatsApp: +86 18838072829If a ball mill uses little or no water during grinding, it is a 'dry' mill. If a ball mill uses water during grinding, it is a 'wet' mill. A typical ball mill will have a drum length that is 1 or times the drum diameter. Ball mills with a drum length to diameter ratio greater than are referred to as tube mills.
WhatsApp: +86 18838072829Ko JH, Cho DW (2005) Determination of cutting condition independent coefficients and runout parameters in ballend milling. Int J Adv Manuf Technol 26:. Article Google Scholar Azeem A, Feng HY, Wang L (2004) Simplified and efficient calibration of a mechanistic cutting force model for ballend milling.
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WhatsApp: +86 18838072829First, graphene and hydrophobic nanoSiO 2 powder were loaded onto a QMWX4 horizontal planetary ball mill (Nanjing University Instrument Factory, Nanjing, China) and run at a speed of 200 rpm for 3 h to obtain graphene/hydrophobic nanoSiO 2 composite powders with graphene content of 1%, 3%, 5%, and 7%, respectively. Subsequently, the surface of the PTFE plates was ground on the MP2 C sand ...
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WhatsApp: +86 18838072829The effect of ball mill on the morphological and structural features of cellulose has been described by Okajima and coworkers. 20 They treated microcrystalline cellulose derived from cotton linters in a planetary ball mill at 200 rpm for 48 hours in dry and wet conditions with three solvents (water, toluene, 1butanol). They observed that ...
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