ACS Omega
·
2022
·
IF 4.132
Yudou Wang,Xu Zhu,Minghui Gao,Bo Zhang,Lei Zhu
The deposition of wax on the surface of the pipeline or the facilities is harmful to oil industries, which can cause serious safety problems and economic loss. To address this problem, a degradable glutinous rice/chitosan-phytic acid composite coating (GR/CS-PA) was prepared. The GR can serve as an adhesive, and it can also enhance the flexibility of CS-PA. The CS-PA component can be used to retain water to prevent the adhesion of crude oil and enhance the mechanical properties of the antiwaxing layer. With the hydration layer on the surface of the GR/CS-PA coating, which can prevent contact between the pollutants and the GR/CS-PA, the coating possesses excellent antifouling properties, especially excellent antiwaxing performance. In addition, an antiwaxing performance testing method was established to quantificationally evaluate the antiwaxing performance of the coating, and the antiwaxing performance (AWP) value was proposed to be the criterion of the antiwaxing performance of the coating. We hope that the green coating and the quantitative testing method can be applied in the petroleum industry to solve the wax deposition problem.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Duo Yang,Miaomiao Chen,Jing-He Yang
Phytic acid (PA) is a six-fold dihydrogenphosphate ester of inositol with cost-effective, environmentally friendly, and safe properties. Here, we successfully synthesize the dehydroxyl cobalt phytate (PA-Co-400) using PA as phosphorus sources by a one-pot wet-chemistry strategy to prepare the precursor PA-Co and then heat treatment at 400 °C under an N 2 atmosphere for dehydroxylation. The average diameter, specific surface area, surface element distribution, and catalytic activity of the catalyst are significantly affected by dehydroxylation temperature. The specific surface area increases first and then decreases with the treatment temperature from 200 °C to 600 °C. The SEM results indicate that the average diameter of PA-Co-400 particle is 68.90 nm. The as-prepared samples are used as an anode catalyst for electrocatalytic oxygen evolution reaction (OER). The PA-Co-400 exhibits splendid OER performances with an overpotential of 310.31 mV at j 10 (η 50 = 349.35 mV, η 100 = 367.20 mV), which are even comparable to commercial RuO 2 (η 10 = 310.54 mV, η 50 = 389.80 mV, η 100 = 450.60 mV). Moreover, the PA-Co-400 has a small Tafel slope of 53.27 mV dec −1 , which is lower than commercial RuO 2 (81.71 mV dec −1 ). The ultra-long durability of PA-Co-400 was tested for over 80 h at current densities of 10 mA cm −2 without a significant reduction in 1 M KOH.
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2022
·
IF 4.432
Jian Xu,Junhao Fei,Tao Tang,Meng Ma,Yanqin Shi,Huiwen He,Si Chen,Xu Wang
In this paper, a bio-based flame retardant PA-AR is synthesized, which endows PLA with good flame retardant and crystallization properties, and at the same time promotes the biodegradability of PLA. Only 1 wt% PA-AR makes the LOI value of PLA reach 26.8% and reaches UL-94 V-0 level. In addition, 1 wt% PA-AR increases the crystallinity of PLA to 23.4%, which increased by 460% compared with PLA. Further, due to the increase of crystallinity, the tensile strength is also improved. Besides, the addition of PA-AR can greatly promote the degradation performance of PLA under specific biological conditions. This work proposed a novel method to obtain completely biodegradable flame retardant composites.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Xiaofang Yuan,Jianfei Xiao,Murat Yılmaz,Tian C. Zhang,Shaojun Yuan
Modification of biomass-derived porous biochar by heteroatomic doping can significantly improve CO 2 adsorption and capacitance performance of supercapacitors. In this study, a novel N, P co-doped porous biochar was developed by facile two-step pyrolysis using widely available and low-cost cornstalks as the carbon source, melamine as the N source, phytic acid as the P source, and a mild K 2 CO 3 as an activating agent. The pore structures and surface chemical characteristics of the as-prepared N, P co-doped cornstalk-derived porous biochar (abbreviated as NPCPB) were regulated by adjusting the pyrolysis temperature and K 2 CO 3 ratio. The as-prepared NPCPB-600-3 (600 represents an activation temperature of 600 °C, and 3 represents the mass ratio of K 2 CO 3 to the carbon composite precursor is 3) was characterized by various methods, and its CO 2 adsorption and electrochemical properties were studied. Results indicated that narrow micropores and N, P doping together determined the adsorption capacity, which was 3.11 mmol g −1 for CO 2 at 1 bar and 25 °C, with almost no decay after 10 consecutive cycles. NPCPB-600-2 had a superior specific capacity of 203.5 F g −1 at a current density of 1 A g −1 and an outstanding cycling stability with a good capacity retention of 106% after 5000 cycles at a high current density of 10 A g −1 . This work reveals that heteroatomically doped porous biochar from biomass has a promising application in CO 2 capture and supercapacitors.
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2022
·
IF 4.432
Haiyan Du,Jiaying Wang,Zemin Wu,Zhubo Liu
Flexible solid-state supercapacitors are considered as one kind of competitive energy storage devices due to the excellent flexibility and high specific capacitance. It attracts considerable attention in recent years. In this paper, binder-free polymer electrodes with outstanding electrochemical performance and mechanical properties were fabricated using poly (vinyl alcohol)/ionic liquid (PVA/IL) composite films as the substrates for the in-suit polymerization of aniline. Scanning electron microscope, cyclic voltammetry , galvanostatic charge-discharge, and tensile test were applied to study the effect of IL content on the structure and properties of the polymer electrodes polyaniline/poly(vinyl alcohol)/ionic liquid (PANI/PVA/IL). The electrode PANI/PVA/IL-1.0 has the optimal comprehensive performance. The specific capacitance and conductivity were 266.6 mF cm −2 and 6.49 S m −1 at 1 mA cm −2 . The tensile strength and elongation at break could reach 1.27 MPa and 509.19%, respectively. PANI/PVA/IL-1.0 was used to assemble the symmetrical polymer supercapacitor with polymer gel electrolyte (PVA/H 2 SO 4 /IL). The area specific capacitance was 251.2 mF cm −2 at 1 mA cm −2 with the capacitance retention of 77.2% after 1000 charge-discharge cycles. Moreover, the solid-state polymer supercapacitor could keep excellent electrochemical performance even under different bending angles or after self-healing, which provides potential applications in electronic encapsulation, flexible energy-storage devices, and high stretchable electric devices etc.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2022
·
IF 11.072
Wenli Gong,Kang Zheng,Chenyi Zhang,Lin Liu,Yaotao Shan,Juming Yao
Electroless plating occupies a vital position in the fields of metal anticorrosion while accompanied by a large amount of effluent containing organophosphorus (like phytic acid) and heavy metals ions {like Cu (II) and Ni (II)}. However, it was still remaining great challenges in how to simultaneously remove these organophosphorus and heavy metal ions with simple methods. This work prepared a green, clean and efficient adsorbent amino-functionalized cellulose (AFCA) for simultaneous removal of organophosphorus and metal ions from complex wastewater. Benefitting from its abundant amino groups, AFCA can rapidly remove organophosphorus and metal ions within 10 min. The theoretical maximum adsorption capacities of AFCA could also reach as high as 89.29 mg/g, 79.37 mg/g and 178.57 mg/g, respectively. Most importantly, for the mixed system of organophosphorus and Cu (II), the removal efficiency was increased by 5.66% and 30.23% compared with the individual system, respectively. High simultaneous removal capacity of AFCA was due to the hydrogen bond and electrostatic interactions with organophosphorus and the complexation interactions between abundant amino groups and metal ions. All of these results demonstrate that AFCA has enormous potential for the treatment of actual electroless plating effluents.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Shaopei Jia,Yifan Cheng,Quan Huang,Qisong Li,Qian Zhang,Zhixin Wang,Yan Zhang,Niu Zhang,Yunchao Mu
Developing inexpensive and efficient electrocatalysts for hydrogen evolution reaction (HER) in both acidic and alkaline mediums is of great significance to the hydrogen energy industry. Hereby, we prepared a mixture of precursors with homogeneous composition by using the chelating ability of soybean protein isolate (C and N source) and phytic acid (dopant and phosphating agent) with cobalt ions , and achieved one-step synthesis and construction of Co 2 P/N–P co-doped porous carbon composite by carbonization at 800 °C. The as-synthesized Co 2 P/NPPC-800 electrocatalyst exhibits low HER overpotentials of 121 and 125 mV at 10 mA cm −2 in 0.5 M H 2 SO 4 and 1.0 M KOH, which are close to those of the commercial Pt/C catalyst. Additionally, the NPPC substrate surrounding the Co 2 P could diminish the corrosion during the HER, and Co 2 P/NPPC-800 displays good stability and durability. Furthermore, this work offers a convenient synthesis strategy for phosphide/doped porous carbon composites in other electrochemical energy technologies.
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULAR RESEARCH
·
2022
·Vol. 30
·期 8
·536-546
·
IF 2.127
Wang Huan,Li Li,Kang Yan,Yin Xue,Lei Xuedi,Yang Jing,Xi Hui,Xu Xueqing,Yang Zhiwang,Lei Ziqiang
To reduce the fire hazard of epoxy resin (EP), PA-CS-M (where PA = phytic acid, CS = chitosan, M = Cu 2+ , Co 2+ , Al 3+ , Zn 2+ , Mn 2+ ) environmental friendly flame retardant is prepared by a simple and green method. By comparing the data after cone calorimetry test (CCT) of various composites, it is found that when 5 wt% PA-CS-Mn is added to EP, it has good flame retardant and smoke suppression performance. The peak heat release rate (pk-HRR) decreased by 38% and the smoke production rate (SPR) decreased by 33%. In addition, some toxic smoke such as CO has been significantly inhibited. The structures and morphologies of the materials were investigated by Fourier transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). When combined with expandable graphite (EG), it is found that when the ratio of PA-CS-Mn to EG is 1:5, the pk-HRR value and SPR value decreased by 69.8% and 66.6%, respectively. More importantly, the mechanical properties of the EP composites have also been greatly improved. The flexural modulus reaches 5.04 GPa, which is 52.3% higher than pure EP, and the flexural strength increases to 79.4 MPa, which also shows an increase of 41.4% as to the matrix.
✓ 已验证
产品关联
DOI
高影响因子
GREEN CHEMISTRY
·
2022
·Vol. 24
·期 19
·7531-7544
·
IF 11.034
Chi Huang,Ze-Yong Zhao,Cong Deng,Wei Lin,Yu-Zhong Wang
The low degradability and durability of plastics are a double-edged sword: they enable plastics to have versatile applications in the use phase, but pose environmental challenges at the end-of-life of the plastics. This dilemma requires innovative strategies to strike a balance between the plastic performance and recycling to achieve a sustainable ecosystem. To address the challenges, we constructed a hybrid biocomposite (denoted as EVA/MPAPS) made of an ethylene-vinyl acetate (EVA) copolymer and melamine phytate decorated potato starch (MPAPS), which has tailored recyclable properties, via a recycle-by-design strategy. The EVA/MPAPS presented high performance in fire safety and mechanical behavior in its use phase; at the end-of-life, it could be converted into high-value-added carbons via controlled carbonization for versatile electrochemical applications, thus maximizing the valorization of the biocomposites. The electrochemical performances of the recycled carbons could be manipulated by adjusting their porosity and chemical structure through different carbonization temperatures. The recycled carbons carbonized by EVA/MPAPS at 600 °C (denoted as MPAPS600) exhibited a specific capacitance as high as 207 F g−1 at 1 A g−1, which was almost twice that of a commercial supercapacitor (YP-50F), as well as an excellent rate capability of 72% capacitance retention at 20 A g−1. When the carbonization temperature was elevated to 700 °C, the recycled carbons (denoted as MPAPS700) presented high reversible capacity (204.4 mA h g−1 at 500 mA h g−1), good cycling performance (∼79% retention after 450 cycles) and excellent coulombic efficiency. This work provides a new perspective on the prospects for management of the fabrication, use and upcycling of biocomposites efficiently, thus moving forward towards a circular carbon economy.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Lu-Lin Ma,Hao Ye,Lin Liu,Ming-Bang Wu,Juming Yao
Herein, we have developed a mild and convenient strategy to enable polypropylene (PP) fibrous membranes with abundant adsorption sites for the selective extraction of uranium from seawater. Lysozyme was chosen as the pre-coatings because of its strong hydrophobic interactions with PP membranes. Then, lysozyme and phytic acid were set as hydrogen bonding self-assembling components since both of them are proved with a great binding affinity towards uranium. The contents and thickness of the lysozyme-phytic acid coatings could be linearly tuned due to the excellent controllability of self-assembly. The obtained PP membrane could achieve adsorption capacity as high as 90.07 mg-U/g-membrane (2143.83 mg-U/g-coating). In addition, the lysozyme would endow the PP membranes with outstanding anti-fouling, anti-bacteria, and anti-adhesion properties. The modified membranes could maintain more than 85% of adsorption capacity even with the interferences of bacteria and model pollutants. We also applied the membranes for dynamic adsorption by taking advantage of membrane filtrations. The adsorption capacity during the dynamic process increases with the flow rates and the layer numbers because more uranyl ions could contact with the adsorption sites. The modified PP membranes could obtain 1.15 mg/g of uranium after 15 days when the concentration of uranium is set as the same as the uranium concentration (3.3 μg/L) in natural seawater.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Kaili Wang,Tao Zhang,Xiao Xiao,Xinyu Fang,Xiaorong Liu,Youming Dong,Yanjun Li,Jianzhang Li
Bamboo is easily affected by moisture and mold, etc., causing performance deterioration, which limits the practice application. Phytic acid (PA) as abundant biomass resources , can form the polyelectrolyte complexes with cationic charged compounds, and also the coordination complexes with metal ions . In this work, the green and transparent superhydrophobic coating on bamboo surface was developed by deposition and assembly of PA-based hybrid complexes and subsequent hydrophobic treatment. The micro-/nano- hierarchical structure supported by hybrid complexes and the low energy component provided by octadecylamine both contributed to the excellent superhyophobic performance. The contact angle and sliding angle of the modified bamboo surface were 153.2° and 7.5°, respectively, and exhibited great environment and chemical durability. In addition, the superhydrophobic coating endowed bamboo with mildew resistant property. This work demonstrates the potential of PA-based hybrid complexes as constructing superhydrophobic coatings, and also provides an avenue for the fabrication of green and transparent superhydrophobic coatings on bio-based material surfaces.
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2022
·
IF 18.027
Chunlei Zhang,Guangyu Chu,Zesong Ruan,Ning Tang,Cunfeng Song,Qichao Li,Wenjie Zhou,Jiale Jin,Hossam Haick,Yunfeng Chen,Daxiang Cui
Materials in nature feature versatile and programmable interactions to render macroscopic architectures with multiscale structural arrangements. By rationally combining metal–carboxylate and metal–organophosphate coordination interactions, Au25(MHA)18 (MHA, 6-mercaptohexanoic acid) nanocluster self-assembled structural color coating films and phytic acid (PA)–metal coordination complexes are sequentially constructed on the surface of titanium implants. The Lewis acid–base coordination principle applies for these metal–organic coordination networks. The isotropic arrangement of nanoclusters with a short-range order is investigated via grazing incidence wide-angle X-ray scattering. The integration of robust M–O (M = Ti, Zr, Hf) and labile Cu–O coordination bonds with high connectivity of Au25(MHA)18 nanoclusters enables these artificial photonic structures to achieve a combination of mechanical stability and bacteriostatic activity. Moreover, the colorless and transparent PA–metal complex layer allows the viewing of the structural color and surface wettability switching to hydrophilic and makes feasible the interfacial biomineralization of hydroxyapatite. Collectively, these modular metal–organic coordination-driven assemblies are predictive and rational material design strategies with tunable hierarchy and diversity. The complete metal–organic architectures will not only help improve the physicochemical properties of the bone–implant interface with synergistic antibacterial and osseointegration activities but also can boost surface engineering of medical metal implants
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）