Environmental Science-Processes & Impacts
·
2023
·Vol. 25
·期 12
·1962-1973
·
IF 5.5
Jine Wang,Chen Zhang,Rui Zhao,Pei Wang,Meihua Jin,Jiujun Xu
Marine biofouling is a thorny issue that causes serious economic losses and adverse ecological impacts on marine ecosystems. Effective and promising antifouling strategies such as surface hydration, flow shear force, and lubricant injection have been developed to address this challenge. However, for the complex marine environment, they still appear inadequate. Mussels are a common fouling organism with strong surface adhesion ability. However, when hypoxia and the oxidative cross-linking reaction of 3,4-dihydroxy phenyl-L-alanine (DOPA) in the structure of adhesion proteins are disrupted, their adhesion ability will be greatly reduced. Inspired by this, we developed an effective antifouling strategy based on reactive oxygen species (ROS) scavenging using N-acetylcysteine (NAC) and evaluated its performance. As a ROS scavenger interfered with the oxidative cross-linking reaction of DOPA in an aqueous solution, the adhesion of DOPA was also affected on the surface of NAC functionalized polyvinyl chloride (PVC) (PVC-NAC). In addition, the colonization level of mussels and the adhesion rate of marine bacteria and benthic diatoms on PVC-NAC were low. The antifouling strategy proposed in this paper was eco-friendly and broad-spectrum, and may provide a new idea for solving marine biofouling and reducing the environmental and economic impacts of fouling organisms.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Coatings Technology and Research
·
2023
·
IF 2.3
Meng Fangfei,Wang Wenjin,Yu Yijia,Xia Wenjuan,Wang Ling,Wu Zhaoqiang,Chen Hong
A simple and convenient strategy for fabricating superhydrophilic multifunctional antifogging coatings was developed by hydrolyzing triethoxysilyl-terminated poly( N -vinylpyrrolidone) (TRES-PVP) with tetraethyl orthosilicate (TEOS) under acidic conditions. These antifogging coatings can be easily obtained by coating TRES-PVP hydrolysates on substrates at room temperature and then curing by thermal treatment. The superhydrophilic transparent coatings exhibited excellent antifogging, self-cleaning and antifouling properties. Additionally, the coatings also have good adhesion against the cross-cut test and remain stable after exposure to the laboratory environment for five months or immersion in water at room temperature for 20 days. Therefore, the present TRES-PVP hydrolysate coatings are promising for practical multifunctional antifogging applications.
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2023
·
IF 13.3
Shuyang Peng,Di Liu,Keyu An,Zhiqin Ying,Mingpeng Chen,Jinxian Feng,Kin Ho Lo,Hui Pan
Green hydrogen is considered to be the key for solving the emerging energy and environmental issues. The photoelectrochemical (PEC) process for the production of green hydrogen has been widely investigated because solar power is clean and renewable. However, mass production in this way is still far away from reality. Here, a Si photoanode is reported with CoO x as co-catalyst for efficient water oxidation. It is found that a high photovoltage of 350 mV can be achieved in 1.0 m K 3 BO 3 . Importantly, the photovoltage can be further increased to 650 mV and the fill factor of 0.62 is obtained in 1.0 m K 3 BO 3 by incorporating Mo into CoO x . The Mo-incorporated photoanode is also highly stable. It is shown that the incorporation of Mo can reduce the particle size of co-catalyst on the Si surface, improve the particle-distribution uniformity, and increase the density of particles, which can effectively enhance the light absorption and the electrochemical active surface area. Importantly, the Mo-incorporation results in high energy barrier in the heterojunction. All of these factors are attributed to improved the PEC performance. These findings may provide new strategies to maximize the solar-to-fuel efficiency by tuning the co-catalysts on the Si surface.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 140
·期 37
·e54400
·
IF 3
Xiaowei Jiang,Zhihong Liu,Yujiao Tan,Xiaosong Chen,Ping Huang,Libo Ma,Xu Xiong,Weibin Gao,Yu Tao,Hongxia Lu,Zheng Dai
Nitrogen atoms has been widely adopted in preparation of porous organic polymers (POPs). In our study, flexible nitrogen porous organic polymers (FNPOPs) with high nitrogen content are synthesized by using acetic acid both as solvent and catalyst. The materials show moderate Brunauer–Emmett–Teller (BET) surface area and outstanding thermal stabilities ( T d : 330°C). FNPOP-2 is prepared into phase change material (PCM) composites by self-adsorption method. From differential scanning calorimetry (DSC) analysis, the PCM composites show high encapsulation ratio (55.2 wt%) and latent heat (135.7 J g −1 ) due to flexible structure and high nitrogen atomic content. Furthermore, the thermal energy storage properties of all PCM composites remained after several thermal cycles. In general, FNPOPs have potential applications in phase change materials adsorption and thermal energy storage.
✓ 已验证
产品关联
DOI
高影响因子
ZEITSCHRIFT FUR KRISTALLOGRAPHIE-NEW CRYSTAL STRUCTURES
·
2023
·Vol. 238
·期 4
·799-800
·
IF 0.3
Yu-Pei Xia
C 4 H 13 Cl 2 N 5 , monoclinic, P 2 1 (no. 4), a = 7.1868(6) Å, b = 5.8408(4) Å, c = 12.6534(11) Å, β =
105.134
(
2
)
∘
, V = 512.73(7) Å 3 , Z = 2, R
gt ( F ) = 0.0354, wR
ref ( F
2 ) = 0.0961, T = 298 K.
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2023
·
IF 8.3
Zixuan Ou,Xindi Chen,Xinming Wu,Changren Zhou,Kaijie Zhang,Jingyang Luo,Fang Fang,Yinqiang Sun,Ming Li,Qian Feng
While pioneering methods have demonstrated that bacterial N-acyl homoserine lactone (AHL) signaling molecules can influence the growth and self-aggregation of suspended microalgae, whether AHLs can affect the initial adhesion to a carrier has remained an open question. Here we revealed that the microalgae exhibited different adhesion potential under AHL mediation, where the performance was affiliated to both AHL types and concentrations. The result can be well explained by the interaction energy theory, where the energy barrier between the carriers and the cells varied due to AHL mediation. Depth analyses revealed that AHL acted through modifying the properties of the surface electron donor of the cells, which were dependent upon three major components, i.e. , extracellular protein (PN) secretion, the PN secondary structure, and the PN amino acid composition. These findings expand the known diversity of AHLs mediation on microalgal initial adhesion and metabolisms, which may interface with other major cycles and become helpful to theoretically guide the application of AHLs in microalgal culture and harvesting.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ORGANIC CHEMISTRY
·
2023
·
IF 3.6
Xinhan Li,Hengyuan Zhao,Li Meng,Jun Dong,Chunhui Yang,Zixiang Wei,Xianming Wang,Jianbin Xu,Baomin Fan
The ability to selectively synthesize multiple products from the same sets of substrates is a highly appealing and challenging concept in synthetic chemistry. In this manuscript, we describe the visible-light photoredox intermolecular catalysis of N-arylacrylamides that are α-C–H functionalized with aryl tertiary amines. The photocatalyst acts as a chemical switch to trigger two different reaction pathways and to obtain two different products from the same starting material. Simple adjustments to the reaction conditions enable the divergent synthesis of the oxidative cyclizations or the addition products in good to high yields with excellent atom economy.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2023
·
IF 5.2
Mingwei Zhang,Linlin Liu,Wenjun Zhang,Li Wang,Xiangwen Zhang,Guozhu Li
ZSM-48 is widely used to support Pt nanoparticles (Pt/ZSM-48) for hydroisomerization of long-chain n -paraffin due to its 10-member-ring one-dimensional pore structure . But the yield of target isomers on Pt/ZSM-48 is difficult to be improved due to easily bundled crystal bars and relatively excessive acid sites of ZSM-48, which restricts reactant diffusion and causes cracking. In this study, different types of zeolite growth modifiers (ZGMs) are screened for regulating the physicochemical property of ZSM-48, in which phenolic hydroxyl was found to be the most effective functional group. Quantitative correlations between ZGM structure and the properties of corresponding ZSM-48 crystal are achieved based on appropriate descriptors and multi-parameter regression. Then, the mechanism of ZSM-48 regulation by phenolic ZGMs is revealed. The models predict that polydopamine (PDA) is a superior ZGM for hydroisomerization, which is verified by textural characterization and reaction evaluation. Compared with the conventional catalyst, the isomer selectivity was improved effectively from 92% to over 97% when the feed conversion was lower than 80%, and the maximum yield of isomers was 89.0% as catalyzed by the PDA-regulated catalyst. The as-built models can also be used to design preferred phenolic ZGMs for preparing tailored ZSM-48 in other applications.
✓ 已验证
产品关联
DOI
高影响因子
RARE METALS
·
2019
·
IF 1.785
Jiao Can,Sun Hao-Bo,Zhang Li,Zhao Shang-Qian,Pang Guo-Yao,Zhao Chun-Rong,Lu Shi-Gang
Abstract Lithium (Li) metal is the most promising electrode for next-generation rechargeable batteries. In order to push the commercialization of the lithium metal batteries, a kind of nitrogen(N)-doped composite graphene (NCG) adopted as the Li plating host was prepared to regulate Li metal nucleation and suppress dendrite growth. Furthermore, a new kind of sandwich-type composite lithium metal (STCL) electrode was developed to improve its application. The STCL electrode can be used as convenient as a piece of Li foil but no dendrite growth. In a symmetric battery, the STCL electrode cycled for more than 4500 h with the overpotential of less than 40 mV. And due to the creative design, the STCL promises the Li–S battery with a prolonged cycling lifespan. Graphical Abstract
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2019
·
IF 2.687
Jiangyao Wu,Yan Dong,Xueyun Yang,Cheng Yao
The preparation of N-doped carbon dots (N-CDs) was facile and efficient by the hydrothermal method , using diethylenetriamine (DETA) and citric acid (CA) as nitrogen source and carbon source, respectively. The fluorescence of N-CDs was effectively quenched by Fe 3+ . Upon addition of hydroxylamine hydrochloride (HH) to N-CDs/Fe 3+ complex dispersion, the fluorescence of N-CDs was significantly recovered. Therefore, we developed an “off-on” fluorescence assay for the detection of HH using N-CDs/Fe 3+ as a fluorescence probe. The fluorescence intensity showed linearity with the added HH concentration ranging from 0 to 100 μM with the detection limit of 0.246 μM (S/N = 3). The proposed N-CDs sensing showed high selectivity and sensitivity to detection HH in aqueous solution.
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS LETTERS
·
2019
·Vol. 150
·期 1
·74-81
·
IF 2.372
Mao Donglei,Jia Mingmin,Qiu Jianhao,Zhang Xiong-Fei,Yao Jianfeng
Abstract N-doped porous carbon (NPC) was produced through a simple and efficient method using biomass-derived pine sawdust as the carbon source, NH 4 Cl as nitrogen source and NaHCO 3 as the activator. Both NPC and porous carbon (PC, prepared without nitrogen-doping) were used as support for Au nanoparticles to catalytic oxidation of benzyl alcohol. As expected, Au/NPC performs a substantially enhanced catalytic activity for benzyl alcohol oxidation in comparison with that of Au/PC (conversion of benzyl alcohol is 98.9% for Au/NPC and 51.4% for Au/PC under the same condition). The better catalytic performance of Au/NPC should be due to the introduction of N atoms into PC support, which not only adsorbs the benzyl alcohol molecules more easily, but also makes the Au nanoparticles smaller and more dispersed. Our experimental results also show that mild temperature (60 °C) is more beneficial for the reaction, O 2 atmosphere is a necessity for benzyl alcohol oxidation and Au/NPC can also be used to catalyze oxidation of other aromatic alcohols. Graphic Abstract
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CATALYSIS
·
2019
·
IF 7.723
Zhaolin He,Jin Liu,Qijun Wang,Meng Zhao,Zhipan Wen,Jun Chen,Devaraj Manoj,Chuyi Xie,Jiangbo Xi,Junxia Yu,Chunyan Tang,Zhengwu Bai,Shuai Wang
Eco-friendly carbocatalyst is extremely desirable in organic catalysis and wastewater treatment. Herein, we reported a one-pot synchronous hydrothermal process to synthesize a highly efficient N doped holey graphene (NHG) carbocatalyst, in which graphene oxide nanosheets are self-assembled, reduced, chemically etched, and simultaneously doped with nitrogen to form a graphene hydrogel in the presence of H 2 O 2 and NH 4 OH. Benefiting from the good hydrophilicity, unique hierarchical porous structure, large specific surface area (322.1 m 2 g −1 ), and high N content (9.77 at. %), the resultant NHG carbocatalyst exhibits an excellent catalytic performance for the hydrogenation of N-containing unsaturated compounds. In 4-nitrophenol reduction reaction, the NHG carbocatalyst delivers a turnover frequency of 3.32 × 10 −2 min −1 . This catalytic activity is superior to that of the commercial Pd/C (5.0 wt%), other previously reported carbocatalysts, and many noble-metal-based catalysts. Furthermore, the molecular structure analysis combined with density functional theory calculations elucidate metal-free catalytic mechanism of hydrogenation reaction for unsaturated chromophore groups in N-containing organic dyes.
✓ 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）