Geoenergy Science and Engineering
·
2023
·
IF 0
Wenchuan Wu,Xiaorong Yu,Anbang Hu,Han Yan,Zhengliang Dong,Huan Yang,Gaoshen Su
Amphoteric retarder (AIDA) was prepared by radical copolymerization of 2-acrylamido-2-methyl propane sulfonic acid (AMPS), itaconic acid (IA), 2-(Methacryloyloxy) ethyltrimethylammonium chloride (DMC) and methyl allyl polyethenoxy ether (TPEG). The characteristics of AIDA were verified by FTIR and 1 HNMR. In addition, the performances of AIDA in cement slurry including thickening time, compressive strength developments, and adaptability to long standing cementing with lager temperature differences were investigated. The results indicated that AIDA possessed excellent temperature-resistance (180 °C) and good adaptability to long standing cementing with larger temperature differences of 90 °C. Finally, the retarding mechanism of AIDA was revealed through transverse relaxation time (T 2 ) distribution, XRD tests, and adsorption behavior of AIDA on cement particles. The results demonstrated that the stronger retarding effect of AIDA originated from the dual adsorption of AIDA on cement particles compared with AMPS-IA copolymer (PAI). AIDA outperformed PAI in its adaptability to long-term cementing, which was responsible to (a): the adsorbed amount of AIDA at higher temperature is higher than that of lower temperatures, therefore, AIDA has a stronger retarding effect at higher temperature and weaker retarding effect at lower temperature. (b) Compared to PAI, the adsorption strength of AIDA is weaker and easy to de-adsorb, so both the retarding effect and the hydration reaction of cement are realized. Thus, the super-retarding phenomenon of cement slurry containing AIDA is effectively prevented.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 48
·25527-25538
·
IF 14.511
Enke Feng,Xue Li,Xiaoqin Li,Mengzhen Zhang,Linan Cao,Ziqiang Wu,Xinxian Ma
Conductive hydrogels are considered as highly promising candidates for fabricating flexible and wearable electronic devices. However, traditional hydrogels inevitably lose their inherent characteristics under extreme climatic conditions, which seriously hinders the practical application of hydrogel-based electronics. Herein, a toughened, self-healing, self-adhesive and transparent conductive gel (PAA-Zr4+/Gly/IL) with extraordinary temperature adaptability is prepared via a one-step photopolymerization of the acrylic acid (AA) monomer in Gly (glycerol)–IL ([Bmim]Cl) hybrid solvent containing Zr4+ ions. The carboxyl–Zr4+ coordination bonds and multiple hydrogen bond interactions within the gel networks contribute to the excellent mechanical properties (0.42 MPa at 1436% strain) and self-healing capability. Meanwhile, the synergistic effects of Gly and IL endow the as-prepared gel with significant temperature tolerance, which can maintain remarkable flexibility and mechanical strength even after being stored at −50, 20 and 50 °C for 30, 30 and 10 days without extra sealed packaging. Impressively, the PAA-Zr4+/Gly/IL gel-based sensors exhibit favorable sensitivity and repeatable response capability upon both mechanical and thermal stimulation. As a strain sensor, it demonstrates a wide sensing range (5–700%), prominent signal stability (1100 cycles at 300% strain) and precise human motion detection along two opposite directions. As a thermal response sensor, it can accurately and reliably sense temperature changes in a wide range from −50 to 50 °C. Noticeably, owing to the significant self-healing properties and temperature tolerance, the pristine and healed PAA-Zr4+/Gly/IL gels after long-term storage at various temperatures (−50, 20 and 50 °C) are also capable of demonstrating a recognizable and reliable signal response when detecting tensile strains and prosthetic finger bending movements in normal and harsh environments. This work provides a powerful strategy to design versatile conductive elastomers with broad and long-term temperature tolerance for future flexible and wearable electronics.
研究领域:
材料科学
·
柔性电子
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2023
·Vol. 49
·期 8
·3605-3626
·
IF 3.3
Li Xing,Huhe Taoli,Zeng Tao,Ling Xiang,Huang Hongyu,Chen Yong
Carbon materials mainly capture sulfur dioxide (SO 2 ) from gas through physical adsorption, therefore their SO 2 capture performance will decrease with the increase in desulfurization temperature. In order to meet the stringent requirements of deep desulfurization, further improvements on carbon materials are necessary, improving their SO 2 capture performance and adaptability to changes in desulfurization temperature. In this study, a carbon material (NCP10) was modified with various alkali metal compounds with the aim of enhancing the SO 2 capture performance and adaptability to temperature changes. The results showed that the NCP10/LiOH composite had the best average SO 2 removal rate (100%) and SO 2 capture capacity ( \({113}.{6} \;{\text{mg}}_{{{\text{SO}}_{2} }} /{\text{g}}_{{{\text{material}}}}\) ) within the first hour of reacting at 60 °C, the SO 2 removal rate and SO 2 capture capacity of the NCP10/LiOH composite were 29% and 29% higher than those of the pure NCP10 material, respectively. While the SO 2 capture performance of the NCP10 modified with LiCl, Li 2 CO 3 , NaOH and KOH were not sufficient for deep desulfurization, the SO 2 capture performance of the NCP10/LiOH(2:1) composite was able to meet the requirements of deep desulfurization in the temperature range of 25–100 °C by the physical adsorption and chemical absorption synergistically effect.
研究领域:
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Kai Lin,Ao Xia,Yun Huang,Xianqing Zhu,Kaiyong Cai,Zidong Wei,Qiang Liao
Enzymatic hydrolysis is considered to be a restricted step for lignocellulosic bioethanol production at an industrial scale for its high production costs and low efficiency. In this study, a microreactor loaded with cellulase based on co-deposition of dopamine (DA) and polyethyleneimine (PEI) was proposed, for the first time, to efficiently hydrolyze carboxymethyl cellulose (CMC) and produce sugar. When the concentration of PEI increased from 0 to 0.5 mg mL −1 , the enzyme loading was increased by 27.4%, and glucose production was increased by 33.2%. Besides, the cellulase-loaded microreactor showed better temperature adaptability than free cellulase at elevated temperatures ranging from 55 °C to 65 °C. After storage for 20 days, the cellulase-loaded microreactor retained 84.4% of its initial activity, which is 69.5% higher than the free cellulase. The yield reached 169.7 mg glucose g −1 CMC in the cellulase-loaded microreactor in 16 h. With the same amount of enzyme input, the glucose production per unit time in the cellulase-loaded microreactor is 97.2% higher than that in other reaction systems. This study demonstrated that continuous production of glucose can be achieved in the microreactor at a relatively low enzyme dosage.
研究领域:
生物工程
·
酶学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Xiuwen Zheng,Xiangfu Zhou,Yaolong Yang,Wenjie Xiong,Shuling Ye,Yiting Xu,Birong Zeng,Conghui Yuan,Lizong Dai
Organogels are less explored toward on-sink flexible and stretchable electronics compared to hydrogels, due to the challenges in simultaneously achieving biocompability, satisfactory mechanical properties, environmental-adaptive adhesion capability, and fast stimuli-response. Herein, it is shown that a boronate ester polymer organogel with dynamic covalent and hydrogen bonds formed between the polymer networks and organic solvents meets all the above requirements. This is achieved through the gelation of a polymer bearing with boronic acid, imidazolium salt, and amide groups (named QBAM) in ethylene glycol (EG). The strong interactions between the polymer chains and the EG not only improve the toughness of QBAMs, but also inhibit the volatilization of EG, leading to a wide temperature (−10 to 190 °C) adaptability. Due to the abundant hydrogen bonds and electrostatic interaction, QBAM organogels are highly adhesive to a variety of substrates. The presence of imidazolium salt endows QBAM organogels with promising ionic conductivity. Strain sensors fabricated with QBAM organogels fit well on human skin and exhibit the advantages of high strain sensitivity (GF = 9.049), fast response (≈60.4 ms), good cyclic stability, and broaden temperature adaptability. This work opens up a new avenue for the design of multifunctional and biocompatible organogels for on-skin devices.
研究领域:
材料科学
·
生物医学工程
·
柔性电子
✓ 已验证
产品关联
DOI
高影响因子
Gels
·
2024
·Vol. 10
·期 8
·511
·
IF 5
Xiongwei Liu,Biao Qi,Xiuping Chen,Ziyao Shen,Jingbin Yang
Lost circulation is a common and complicated situation in drilling engineering. Serious lost circulation may lead to pressure drop in the well, affect normal drilling operations, and even cause wellbore instability, formation fluid flooding into the wellbore, and blowout. Therefore, appropriate preventive and treatment measures need to be taken to ensure the safe and smooth operation of drilling operations. So, it is necessary to conduct in-depth research on the development and performance of the plugging materials. In this study, urea formaldehyde resin with high temperature resistance and strength was used as the main raw material, and the curing conditions were optimized and adjusted by adding a variety of additives. The curing time, compressive strength, temperature resistance, and other key performance indexes of the resin plugging agent were studied, and a resin plugging agent system with excellent plugging performance was prepared. The formula is as follows: 25% urea formaldehyde resin +1% betaine +1% silane coupling agent KH-570 + 3% ammonium chloride +1% hexamethylenetetramine +1% sodium carboxymethyl cellulose. The optimal curing temperature is between 60 and 80 °C, with a controllable curing time of 1–3 h. Experimental studies examined the rheological and curing properties of the resin plugging agent system. The results showed that the viscosity of the high-strength curable resin system before curing remained stable with increasing shear rates. Additionally, the storage modulus and loss modulus of the resin solutions increased with shear stress, with the loss modulus being greater than the storage modulus, indicating a viscous fluid. The study also investigated the effect of different salt ion concentrations on the curing effect of the resin plugging system. The results showed that formation water containing Na+at concentrations between 500 mg/L and 10,000 mg/L increased the resin’s curing strength and reduced curing time. However, excessively high concentrations at lower temperatures reduced the curing strength. Formation water containing Ca2+increased the curing time of the resin plugging system and significantly impacted the curing strength, reducing it to some extent. Moreover, the high-strength curable resin plugging agent system can effectively stay in various fracture types (parallel, wedge-shaped) and different fracture sizes, forming a high-strength consolidation under certain temperature conditions for effective plugging. In wedge-shaped fractures with a width of 10 mm, the breakthrough pressure of the high-strength curable resin plugging agent system reached 8.1 MPa. As the fracture width decreases, the breakthrough pressure increases, reaching 9.98 MPa in wedge-shaped fractures with an outlet fracture width of 3 mm, forming a high-strength plugging layer. This research provides new ideas and methods for solving drilling fluid loss in fractured loss zones and has certain application and promotion value.
研究领域:
石油工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Siyao Zhang,Ruobing Tian,Yuanna Sun,Zengguang Ji,Zhihao Liu,Houwang Deng,Yao Liu,Yan Hou,Yan Jiang,Qingshan Li,He Miao
Zinc-air batteries (ZABs) have gained increasing attention due to their high energy density and environmental sustainability. However, challenges such as dendrite formation on zinc anodes in flexible ZABs, particularly under highly alkaline conditions, have hindered their performance. In this study, we introduced a simple and effective approach to design a double-network gel polymer electrolyte (GPE) composed of polyacrylamide (PAM) and gelatin (PAG). The helical structure of the gelatin network facilitated uniform zinc ion transport, while the polar groups in PAG stabilized water molecules, reducing evaporation and freezing. Notably, the PAG GPE retained over 57 % of its water content after 240 h of air exposure. The ZABs incorporating the PAG GPE exhibited superior ionic conductivity (215 mS·cm −1 ) and an impressive maximum specific capacity of 737 mAh·g −1 . Compared to PAM-only GPEs, the PAG-based batteries showed a 1.68-fold improvement in cycle life. Furthermore, the PAG GPE-based ZABs maintained exceptional stability over a wide temperature range from −40 °C to 60 °C, with an extended cycling lifespan of 140 h at −40 °C. These results underscored the suitability of PAG GPE for applications in extreme environments. Experimental results and simulations confirmed that the PAG GPE effectively promoted uniform zinc ion deposition, significantly suppressing dendrite growth. This innovative hydrogel electrolyte, integrated into flexible ZABs, provided a robust solution for next-generation flexible electronics.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Energy Storage Materials
·
2022
·
IF 20.831
Qiao Wang,Chuang Yu,Liping Li,Xiaoqing Liu,Xin Zhang,Guichen Gao,Yaowen Wang,Guangshe Li
Solid-state sodium batteries (SSSBs) display great potential in scale energy storage for their safety, cost and sustainability. However, it is a great challenge to achieve high ionic conductivity and temperature adaptability for most sodium-ion solid electrolytes. Here, we first demonstrate that Sc 3+ -doped Na 3 Zr 2 Si 2 PO 12 (NASICON) is a promising electrolyte for a wide temperature range utilizing in SSSBs from 0 to 80 °C. Optimal Na 3.4 Zr 1.6 Sc 0.4 Si 2 PO 12 shows a superior Na-ion conductivity, up to 1.77 × 10 −3 S cm −1 at room temperature, and excellent Na metal compatibility, as confirmed by a symmetrical cell test. Furthermore, the solid-state sodium battery with the configuration of Na 3 V 2 (PO 4 ) 3 /Na 3.4 Zr 1.6 Sc 0.4 Si 2 PO 12 /Na maintains a discharge capacity of 98.7 mAh g −1 at 1C after 300 cycles at room temperature. Even at 0 °C, the battery still displays a reversible capacity of 99.2 mAh g −1 at 0.1C after 100 cycles. Through the structure analysis and ex-situ and in-situ electrochemical characterizations, the reasons that dominate the excellent performance of the assembled all-solid-state sodium battery with NASICON electrolytes are initially revealed.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2020
·Vol. 44
·期 9
·3771-3776
·
IF 3.288
Zhigang Peng,Chen Chen,Qian Feng,Yong Zheng,Huan Liu,Chunyang Yu
Because of the contradiction between the safe thickening time of cement slurry and over-retarding at the top in the cementing of a long sealing section with large temperature difference, we synthesized a quaternary copolymerization retarder with 2-acrylamide-2-methyl propane sulfonic acid (AMPS), acrylic acid (AA), diallyl dimethyl ammonium chloride (DMDAAC) and allyl polyoxyethylene ether (APEG). The structure of the retarder was characterized by FTIR and 1H NMR and its thermal stability was tested by TG-DSC. The results showed that the molecule contained the designed functional groups, the initial pyrolysis temperature was 364 °C, and its performance was stable in the temperature range of 90–150 °C. There was no “bulge” or “step” on the thickening curve, and the thickening time could meet the safety requirements of pumping at high temperatures. It can also ensure the development of compressive strength of cement in the low-temperature section and has excellent temperature adaptability. Through the study of its retardation mechanism, it was found that the retarder molecules formed an adsorption layer of a certain thickness on the surface of cement particles by adsorption, and the concentration of Ca2+ in the solution was reduced by complexation, so as to prevent cement hydration and prolong the thickening time. Generally speaking, the large temperature difference adaptability of retarders was mainly manifested in the decrease of molecular adsorption capacity and performance at low-temperature and the improvement of molecular adsorption capacity and performance at high-temperature.
研究领域:
材料科学
·
土木工程
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2024
·
IF 6.3
Jinxu Zhao,Qijun Chen,Zitao Wang,Jianming Zheng,Chunye Xu
Ionic liquids have been recognized as promising electrolytes in electrochromic devices (ECDs). However, the limited solubility of commercial electrochromic materials (ECMs) in ionic liquid effects the electrochromic performance of ECDs. This work synthesized viologen-type (Vio-IL) and ferrocene-type (Fc-IL) room-temperature ionic liquids (RTILs), which have melting points of −22.5 °C and −43.6 °C, respectively. ECDs prepared using these two RTILs exhibit superior optical modulation ability (ΔT = 79.4 %) and good cyclic stability (1000cycles 96.2 %). These two RTILs exhibit advantages because they can be miscible with commonly ionic liquids solvent. Further, ultra-thin (10 μm) ECDs prepared using these RTILs with 20 wt% ionic liquid diluent not only have good electrochromic performance (ΔT = 73.1 %, 1000cycles 95.6 %, 3.7 s for coloring and 13.3 s for bleaching) but also have a wide temperature working window (−30°C–70 °C). These ultra-thin and low-solvent ECDs have the potential to enable temperature adaptability and lightweight and eco-friendly smart windows.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2021
·
IF 5.816
Dongdong Ji,Zheng Liu,Bailing Jiang,Xiaofei Luo
The evaluation of cell's weatherability is of practical interest. To further improve the soluble lead flow battery's weatherability, physiochemical properties of electrolytes containing fluoborate, perchlorate , methanesulfonate and trifluoromethanesulfonate are investigated from −60 to 50 °C. Activities of CF 3 SO 3 H and HClO 4 are poor in trifluoromethanesulfonate and perchlorate solutions due to common anion effect. The solubility of lead salt can be improved by increasing temperature, but worsened by increasing acid's content. With the temperature increasing, the conductivity is enhanced, and the viscosity is lowered for four solutions. The same results have been found by increasing acid's content except for CF 3 SO 3 H. The high energy efficiency can be achieved for cells over −40–0 °C using fluoborate and perchlorate solutions, 73.2% at −40 °C and 78.1% at −30 °C respectively. Over the temperature range of 20–50 °C, the cells with methanesulfonate and trifluoromethanesulfonate solutions have good performance, 77.4% and 73.7% at 50 °C respectively.
研究领域:
化学
·
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
ENERGY AND BUILDINGS
·
2023
·
IF 6.7
YingJie Wu,Bin Liu,RenYan Zhang,Tao Yu,MingBo Pu,Xiong Li,XiaoLiang Ma,YongCai Guo,XianGang Luo
Traditionally, the passive radiative cooling materials (PRCMs) researches focus on optimizing the cooling power by spontaneously increasing sunlight reflectivity and infrared emissivity. However, the resultant overcooling in winter will increase the construction heating costs. Here, temperature-adaptive porous polymer radiative cooling coatings (TA-PRCMs) were developed from an all-season thermal management perspective, which can adaptively adjust the sunlight reflectivity according to ambient temperature. The fabricated porous polymer coatings switch from the colorless phase to the colored phase, when the ambient temperature is lower than the transition temperature, with the solar reflectance of black, rose red, orange, violet, blue and yellow coatings changed from 0.85, 0.9, 0.92, 0.9, 0.75 and 0.9 to 0.6, 0.7, 0.73, 0.67, 0.62, and 0.86, respectively. The outdoor temperature tests show that the average and maximum daily surface temperatures of the black sample are up to 2.7 °C and 4.7 °C higher than superior performance hierarchically porous radiative cooling (HPRC) film on a winter day. Energy consumption simulations show that the energy-saving performance of TA-PRCMs coatings outperforms the HPRC film in most cities of China with various climates. Such as in Lhasa, China, the black color coating can save up to 5000 ∼ 6000 kWh for a two-story office building.
研究领域:
材料科学
·
能源工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）