Applications

In recent years, hydrogen energy and carbon capture and utilization-related industries have received extensive attention and development, especially hydrogen storage and CO2 capture and conversion and utilization-related industries. The research of H2, CO2, and other gas storage and separation materials is the key to promoting the development of related industries.   Recently, Prof. Cheng Xingxing's group at Shandong University synthesized biomass cellulose carbon aerogel with a three-dimensional network structure from Tetragonum officinale (TO) and further enhanced the energy storage performance of the carbon aerogel with KOH activation.TO cellulose carbon aerogel is characterized by its lightweight (3.65 mg/cm3), superhydrophobicity, and large specific surface area (1840 cm2/g). Due to the excellent microporous volume and abundant functional groups, TO carbon aerogel can be used as a multifunctional adsorbent material in different applications. The material possesses 0.6 wt% hydrogen storage capacity, 16 mmol/g CO2 adsorption capacity, 123.31 mg/g o-xylene, and 124.57 mg/g o-dichlorobenzene adsorption capacity at room temperature. The low-cost, environmentally friendly, and multifunctional TO cellulose carbon aerogels are promising for various applications such as hydrogen storage, carbon sequestration, and dioxin removal. The study provides a new and effective approach for the sustainable design and fabrication of high-performance functional carbon materials from renewable biomass resources, which can be widely used in energy storage and environmental protection industries. The study is entitled "Multifunctional carbon aerogels from typha orientalis for applications in adsorption: Hydrogen storage, CO2 capture, and VOCs removal". Removal" was published in the journal Energy.     The CIQTEK EASY-V product line was used in the study.       Schematic illustration for the fabrication procedure of TO cellulose carbon aerogels.     In addition, in the direction of gas separation materials research, Prof. Ren Xiuxiu's group at Changzhou University successfully prepared composite membranes for H2 separation by doping two-dimensional (2D) molybdenum disulfide (MoS2), which is unique to H2, into grafted microporous organosilica networks derived from 1,2-bis(triethoxysilyl)ethane (BTESE) using the sol-gel method. The research results were published in the journal Industrial & Engineering Chemistry Research under the title "Laminar MoS2 Nanosheets Embedded into Organosilica Membranes for Efficient H2 Separation. Due to their opposite ζ-potentials, the BTESE sols generated by the hydrolysis polymerization reaction and the MoS2 nanosheets formed a continuous surface without lamellar boundary defects. With the increase of MoS2 content, the H2 transmittance of BTESE membranes showed an overall increasing trend in the range of 1.85 ~ 2.89 × 10-7 mol·...

For centuries, mankind has been exploring magnetism and its related phenomena without pause. In the early days of electromagnetism and mechanics, it was difficult for humans to imagine the attraction of magnets to iron, and the ability of birds, fish, or insects to navigate between destinations thousands of miles apart - amazing and interesting phenomena with the same magnetic origin. These magnetic properties originate from the moving charge and spin of elementary particles, which are as prevalent as electrons.    Two-dimensional magnetic materials have become a research hotspot of great interest, and they open up new directions for the development of spintronics devices, which have important applications in new optoelectronic devices and spintronics devices. Recently, Physics Letters 2021, No. 12, also launched a special feature on 2D magnetic materials, describing the progress of 2D magnetic materials in theory and experiments from different perspectives.    A two-dimensional magnetic material only a few atoms thick can provide the substrate for very small silicon electronics. This amazing material is made of pairs of ultra-thin layers that are stacked together by van der Waals forces, i.e. intermolecular forces, while the atoms within the layers are connected by chemical bonds. Although only atomically thick, it still retains physical and chemical properties in terms of magnetism, electricity, mechanics, and optics.     Two-dimensional Magnetic Materials Image referenced from https://phys.org/news/2018-10-flexy-flat-functional-magnets.html   To use an interesting analogy, each electron in a two-dimensional magnetic material is like a tiny compass with a north and south pole, and the direction of these "compass needles" determines the magnetization intensity. When these infinitesimal "compass needles" are spontaneously aligned, the magnetic sequence constitutes the fundamental phase of matter, thus allowing the preparation of many functional devices, such as generators and motors, magnetoresistive memories, and optical barriers. This amazing property has also made two-dimensional magnetic materials hot. The microelectronics industry has encountered bottlenecks such as low reliability and high power consumption, and Moore's law, which has lasted for nearly 50 years, has also encountered difficulties (Moore's law: the number of transistors that can be accommodated on an integrated circuit doubles in about every 18 months). If two-dimensional magnetic materials can be used in the future in the field of magnetic sensors, random memory, and other new spintronics devices, it may be possible to break the bottleneck of integrated circuit performance.    We already know that magnetic van der Waals crystals carry special magnetoelectric effects, and therefore quantitative magnetic studies are an essential step in the research of two-dimensional magnetic materials. However, quantitative experimental studies on...

What is antiferromagnetic material?   Figure 1: Magnetic Moment Arrangement in Antiferromagnets   The common iron properties are ferromagnetism, ferroelectricity, and ferroelasticity. Materials with two or more iron properties at the same time are called multiferroic materials. Multiferroics usually have strong iron coupling properties, i.e., one iron property of the material can modulate another iron property, such as using an applied electric field to modulate the ferroelectric properties of the material and thus affect the ferromagnetic properties of the material. Such multiferroic materials are expected to be the next generation of electronic spin devices. Among them, antiferromagnetic materials have been widely studied because they exhibit good robustness to the applied magnetic field.   Antiferromagnetism is a magnetic property of a material in which the magnetic moments are arranged in an antiparallel staggered order and do not exhibit a macroscopic net magnetic moment. This magnetically ordered state is called antiferromagnetism. Inside an antiferromagnetic material, the spins of adjacent valence electrons tend to be in opposite directions and no magnetic field is generated. Antiferromagnetic materials are relatively uncommon, and most of them exist only at low temperatures, such as ferrous oxide, ferromanganese alloys, nickel alloys, rare earth alloys, rare earth borides, etc. However, there are also antiferromagnetic materials at room temperature, such as BiFeO3, which is currently under hot research.   Application Prospects of Antiferromagnetic Materials The knowledge of antiferromagnetism is mainly due to the development of neutron scattering technology so that we can "see" the arrangement of spins in materials and thus confirm the existence of antiferromagnetism. Maybe the Nobel Prize in physics inspired researchers to focus on antiferromagnetic materials, and the value of antiferromagnetism was gradually explored.   Antiferromagnetic materials are less susceptible to ionization and magnetic field interference and have eigenfrequencies and state transition frequencies several orders of magnitude higher than typical ferromagnetic materials. Antiferromagnetic ordering in semiconductors is more readily observed than ferromagnetic ordering. These advantages make antiferromagnetic materials an attractive material for spintronics.   The new generation of magnetic random access memory uses electrical methods to write and read information to ferromagnets, which may reduce the immunity of ferromagnets and is not conducive to stable data storage, and the stray fields of ferromagnetic materials can be a significant obstacle for highly integrated memories. In contrast, antiferromagnets have zero net magnetization, do not generate stray fields, and are insensitive to external fields. Therefore, antiferromagnet-based memory perfectly solves the problem of ferromagnetic memory and becomes a very attractive potential me...

In January 2022, the CatLiD-I 675 near-bit follow-on measurement system provided by CIQTEK-QOILTECH achieved a successful operation well in the Linxingzhong gas field located at the transition location between the Yishaan slope and the Jinxi flexural fold zone in the Ordos Basin, which the related parties well recognized. The lithology of the top and bottom of the seam of the target layer of this well is mainly mudstone and carbonaceous mudstone. The coal seam is buried at a large depth, and there is less reference data available in the surrounding wells. The coal seam section is prone to wall collapse and well leakage, downhole stuck drilling, buried drilling, and other complicated accidents. Moreover, the well slope adjustment is large due to landing advance. The CIQTEK-QOILTECH CatLiD-I 675 near bit was picked up from 2208 m and the retest curve matched the upper instrumentation, providing data for guidance to give an accurate landing point.     When landing, due to the advancement of the coal seam, the trajectory goes down to the bottom of the coal seam, and the gamma curve of the near bit measures the complete curve pattern of the coal seam from the top to the bottom, which provides a basis for judging the position of the borehole trajectory inside the coal seam later. The gamma curve change of near bit in drilling is obvious with high resolution and accurately judges the position in and out of the coal seam and within the coal seam. The accurate change of the value of gangue in the coal seam can effectively determine the location of the trajectory, which improves the drilling encounter rate and smoothness of the borehole trajectory.     The service section of this well is 2208-3208m, with cumulative footage of 1000m and a drilling encounter rate of 91.7%; a trip to drill to completion depth, with a cumulative downhole time of 168 hours, 53.5 hours of pure drilling, and an average mechanical drilling speed of 18.69m/h, which greatly shortens the drilling cycle! The on-site crews of CIQTEK-QOILTECH and related teams worked together to shorten the drilling cycle, increase the drilling encounter rate, reduce the risk, and finally received high praise from everyone! The CIQTEK-QOILTECH CatLiD-I 675 near-bit measurement system is a perfect completion.