Journal of Cleaner Production
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2023
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IF 11.1
Jianchun Qin,Shunyan Ning,Jianing Xu,Jishu Zeng,Zheyu He,Liang Luo,Fengtao Hu,Yimin Li,Toyohisa Fujita,Yuezhou Wei
The treatment of hazardous LCD is a complicated coupled process, which contains a large number of impurity metals, especially Fe(III), increased the difficulty of In(III) recovery. Moreover, the defects of the traditional extraction process, such as extractant ageing quickly, difficulty to back-extraction, and easy emulsification , seriously restricted the efficient and environmentally friendly recovery of In . Therefore, a novel adsorbent (D2EHPA/SiO 2 –P) was synthesized for the separation and recovery of In(III), and a new recovery process was developed to eliminate the defects of traditional In recovery process in this study. D2EHPA/SiO 2 –P exhibited excellent adsorption selectivity and kinetics for In(III), and the adsorption equilibrium was obtained within 3 min. The adsorption process of In(III) conformed to the pseudo-second-order and Langmuir model. In(III) on D2EHPA/SiO 2 –P was desorbed by 3 M HCl solution, and D2EHPA/SiO 2 –P still had high adsorption and desorption efficiency for In(III) after 5 times of adsorption-desorption cycle experiments. The adsorption mechanism study found that the O–H bond on the D2EHPA participated in the substitution reaction and bonded with In(III) as the adsorption site during the adsorption process. The bond order value of In–O bond was the lowest in the D2EHPA adsorbed In(III) during the desorption process, indicating that In–O bond was easy to break and desorption form D2EHPA. Finally, in the 0.1M H 2 SO 4 system, a new process of using H 2 C 2 O 4 to reduce Fe(III) in advance, and then using D2EHPA/SiO 2 –P to adsorb In(III) was designed to recover In(III) without producing toxic gas, which realized the separation of In(III) and Fe(III). Our findings showed that the developed recovery process was both efficient and environmentally friendly, which had the potential for industrial application of In recovery from hazardous LCD.
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RESEARCH ON CHEMICAL INTERMEDIATES
·
2023
·Vol. 49
·期 12
·5361-5374
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IF 3.3
Du Chuanqing,Huang Yeyin,Tang Wanjun,Sun Lang,You Qingliang,Li Tingcheng,Xie Guangyong
Formulation and shaping of heterogeneous catalysts are vital in the successful industrial application. Here micro-sized vanadium chromium composite oxides catalysts with the spherical shape were prepared via spray drying with colloidal silica as a binder material. The physicochemical properties of catalysts with different Cr/V molar ratios were characterized by XRD, XPS, FT-IR, TPR, and particle size distribution analysis. It was revealed that the addition of Cr inhibited the formation of the crystalline phase V 2 O 5 and decreased the reduction temperature of pentavalent vanadium species, and also resulted in the formation of monoclinic CrVO 4 and a highly dispersed state of vanadia species. VCrO/SiO 2 particles with various Cr/V atomic ratio were studied as catalysts for p -chlorotoluene ammoxidation to p -chlorobenzonitrile, in which the catalyst with Cr/V ratio of 1 exhibited the best catalytic performance. When the Cr/V ratio was less than 1, mixed phases of orthorhombic CrVO 4 and monoclinic Cr 2 V 4 O 13 were formed and resulted in a low catalytic activity. With the increase of Cr/V ratio, the content of monoclinic CrVO 4 in the catalysts increased, resulting in the catalytic activity of the catalysts improved. However, too large an amount of Cr led to the formation of highly oxidizing hexagonal-Cr 2 O 3 phase, which reduced the selectivity of the catalytic reaction. Graphic abstract
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Materials Today Sustainability
·
2023
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IF 7.8
Feng Ding,Shuling Liu,Shuping Peng,Huarui Zhou,Hongyi Qian,Yifeng Wang,Wei Li,Fangwei Qi,Cijun Shuai
The weak tissue inducibility and easy implantation infection are still challenges confronted to tissue scaffold. Bismuth sulfide (Bi 2 S 3 ) possessed favorable photoelectric, photothermal and photodynamic properties, not only enabling to response near-infrared light to generate electrical signals to promote nerve growth, but also simultaneously produces reactive oxygen species (ROS) and heat to kill bacteria, which emerges as a promising alternative. However, the easy recombination of electron-hole weakens its photocurrent and ROS generation. Herein, Bi 2 S 3 /Ag 3 PO 4 heterostructures are prepared by in-situ growing Ag 3 PO 4 on Bi 2 S 3 , and then mixed with poly- L -lactic acid powder to fabricate scaffolds by selective laser sintering. Due to the different Fermi level of Bi 2 S 3 and Ag 3 PO 4 , the photogenerated electrons of Bi 2 S 3 transferred to the conduction band of Ag 3 PO 4 . Meanwhile, the heterojunction impeded the backflow of electrons, which efficiently achieved electron-hole pair separation. Results indicate the photocurrent and ROS generated by the scaffold was enhanced. The improved photocurrent effectively induces stem cells to differentiate into nerve cells through up-regulating Ca 2+ concentration and neural specific markers Nestin expression. The produced ROS, photothermal and Ag + can synergistically kill bacteria. Ultimately, the scaffold exhibited excellent antimicrobial efficiency with 90.59% and 91.45% against E. coli and S. aureus , respectively. This strategy provides a new perspective to realize the integrated preparation of nerve scaffolds with electrical stimulation and antibacterial performance.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2023
·
IF 8.6
Miao Lu,Siyuan Zhang,Zhongmei Song,Liang Ma,Haining Liu,Ming Fang,Huifang Zhang,Xiushen Ye,Zhijian Wu
Increased levels of octadecylamine (ODA) and 4-dodecylmorpholine (DMP) in the aqueous, primarily utilized as flotation agents in the worldwide production of potash fertilizer, imperil the stability of ecosystems and the downstream production of high-end chemicals. Nevertheless, there is a dearth of exhaustive studies pertaining to the elimination of ODA and DMP. Herein, the Ti/SnO 2 -Sb/β-PbO 2 anode was fabricated by a thermal decomposition-electrodeposition technique for the electrocatalytic degradation of ODA and DMP. The degradation efficiency of ODA and DMP can achieve complete degradation, reaching 100%, after treatment periods of 10 min and 120 min, respectively. Meanwhile, the TOC removal efficiency of ODA and DMP is up to 85% and 61% at 30 min and 120 min, respectively. In particular, sulphate exhibits inhibitory degradation activity of ODA and DMP in comparison to chloride salt. The recycling and accelerated lifetime tests indicate excellent stability and recyclability of the Ti/SnO 2 -Sb/β-PbO 2 electrode. The mechanism of electrocatalytic degradation involves indirect electrochemical oxidation mediated by free radicals. The primary reactive species responsible for the degradation of DMP and ODA, as determined through scavenger quenching experiments and ESR, are ·OH and Cl·. The degradation of the ODA and DMP commences with the elimination of N element, leading to the formation of the N O 3 - . The carbon chain subsequently undergoes the breakdown. The degradation pathways of ODA and DMP were also proposed based on the GC–MS and H-NMR analyses, respectively. Moreover, the Ti/SnO 2 -Sb/β-PbO 2 anode performed excellently in the removal of ODA and DMP in real samples, TOC removal from ODA and DMP in natural samples was 56% and 52%, respectively, within 180 min. This study provides the first exploration of electrocatalytic degradation mechanisms and pathways of ODA and DMP based on the Ti/SnO 2 -Sb/β-PbO 2 anode.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
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IF 8.2
Lili Chen,Xinjia Jiang,Yanmei Sun,Diansong Gan,Wenliang Liu,Yincai Wu,Xihai Hao
The development of edible packaging films was motivated due to resource waste and environmental damage caused by chemically produced plastic packaging. The development of edible packaging film based on grapefruit peel pomace dietary fiber has significant technological and functional potential because grapefruit processing waste is a potential source of high-quality dietary fiber. In this study, the first successful development of an edible packaging film based on dietary fiber using grapefruit soluble dietary fiber (GSDF) from grapefruit peel pomace as a substrate and nanocellulose (GNCC) as a filler was developed. Principal component analysis , membership function synthesis, and response surface methods were used to determine the optimal process to prepare the edible packaging films, and the impact of GNCC on this material was analyzed. The results showed that the overall performance score of the edible packaging film with 1 wt% GNCC was 0.764. The maximum pyrolysis temperature increased from 226.36 °C to 227.10 °C, the melting temperature (Tm) increased by 5.54 °C, the crystallinity increased by 2.95 %. The film solution exhibited non-Newtonian characteristics and a solid-like property. Our results showed that the edible packaging film developed from grapefruit peel pomace and dietary fiber could have several potential applications in the food packaging field.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
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IF 8.2
Yuan Zhang,Lu Yu,Wuxia Ge,Wentao Bi,David Da Yong Chen
A carbon-rich material (DESysChar) was prepared from polysaccharide within a deep eutectic system (DESys) containing oxalic acid, and systematically characterized using various analytical techniques. The investigation of reaction mechanism revealed concurrent dehydration and etherification processes. This study commenced with the extraction of plant polysaccharide using the DESys-based mechanochemical extraction method from Dendrobium officinale . Subsequently, the DESys method was used to carbonize the extracted Dendrobium officinale polysaccharide and produce DESysChar. DESysChar was then used for the adsorption and determination of pollutants in water. This study represents a significant advancement in eco-friendly material synthesis, enabling the low-temperature (120 °C) carbonization of plant-derived polysaccharides, thereby reducing energy consumption and environmental impact. The effective adsorption of methylene blue by DESysChar underscores its potential in environmental remediation. This study presents a more responsible and efficient approach to polysaccharide extraction and carbonization, addressing environmental concerns. Embracing the 4S workflow (involving Sustainable raw materials converted into Sustainable degradable products, by using Sustainable technology throughout the process to create a Sustainable environment) promotes sustainability in material development, laying the foundation for future eco-friendly practices in various industries. In summary, this study propels sustainable polysaccharide development for widespread use.
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INTERNATIONAL JOURNAL OF PHARMACEUTICS
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2023
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IF 5.8
Xia-Lin Dai,Bo-Wen Pang,Wen-Ting Lv,Jian-Feng Zhen,Lu Gao,Cai-Wen Li,Jing Xiong,Tong-Bu Lu,Jia-Mei Chen
Olaparib (OLA) is the first PARP inhibitor worldwide used for the treatment of ovarian cancer . However, the oral absorption of OLA is extremely limited by its poor solubility. Herein, pharmaceutical cocrystallization strategy was employed to optimize the physicochemical and pharmacokinetic properties. Four cocrystals of OLA with oxalic acid ( OLA-OA ), malonic acid ( OLA-MA ), fumaric acid ( OLA-FA ) and maleic acid ( OLA-MLA ) were successfully discovered and characterized. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy confirmed the formation of cocrystals rather than salts, and the possible hydrogen bonding patterns were analyzed through molecular surface electrostatic potential calculations. The in vitro and in vivo evaluations indicate that all of the cocrystals demonstrate significantly improved dissolution performance, oral absorption and tabletability compared to pure OLA. Among them, OLA-FA exhibit sufficient stability and the most increased C max and AUC 0-24h values that were 11.6 and 6.1 times of free OLA, respectively, which has great potential to be developed into the improved solid preparations of OLA.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
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IF 8.6
Decai Yang,Chao Qu,Fanwei Meng,Lanyang Wang,Yongqi Li,Qing Ye
Graphitic carbon nitride (g-C 3 N 4 , CN) is widely utilized in the field of photocatalytic hydrogen production owing to its exceptional visible light absorption, addressing the challenge of energy scarcity. However, its development has been hindered by the issue of low charge separation efficiency. In this study, an ultrathin (∼1.65 nm) oxygen-doped graphitic carbon nitride nanosheets loaded amorphous mesoporous nickel hydroxide (a-Ni(OH) 2 /OCN) photocatalyst was developed through a straightforward calcination and stirring approach. Under visible light irradiation, a-Ni(OH) 2 /OCN exhibited a remarkably high photocatalytic hydrogen evolution rate of 4764.9 μmol·h −1 g −1 , which is 4.7 times greater than that of the original CN. The synergistic effect between O-doping and heterojunction was proved by experimental data analysis combined with DFT calculations. Totally, the introduction of oxygen into CN led to a reduction in its band gap, while a-Ni(OH) 2 /OCN heterojunction achieved a broaden light absorption range and an effective charge separation due to a type-Ⅱ internal electric fields.
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ADVANCED ENGINEERING MATERIALS
·
2023
·Vol. 25
·期 22
·2301062
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IF 3.6
Binxia Yuan,Hong Qian,Lan Cao,Rui Zhu,Weiling Luan
Herein, H + in oxalic acid is used instead of Na + to obtain titanate nanosheets through P200 hydrolysis, which further curls to form a multilayer TiO 2 nanotubes (NTs) structure. Then, Cu 2 O quantum dots (QDs) are successfully loaded on TiO 2 NTs via a hydrothermal method using fructose as a reducing agent. The optical, impedance, and photocurrent tests indicate that the composite structure improves its optoelectronic performance. The photocatalytic H 2 production and CO 2 reduction efficiency of Cu 2 O QDs/TiO 2 NTs are lower than those of TiO 2 NTs. However, the molar ratio of CH 4 to CO produced by CO 2 reduction of Cu 2 O QDs/TiO 2 NTs composite catalyst is greater than that of pure TiO 2 NTs. The CH 4 production accounts for 97%, indicating that the composite catalyst has a high CH 4 selectivity. The experimental and density functional theory calculation results prove that the Z-scheme heterojunction accelerates the separation and transfer of photogenerated carriers, and broadens the absorption range of visible light.
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ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 34
·期 2
·2308849
·
IF 19
Yashuai Pang,Minsen Xie,Xinghao Lu,Zhao Wan,Zhuohang Zhong,Waqas Muhammad,Xiang Long Huan,Yinghua Niu,Zhen Zhang,Weiqiang Lv
Lithium–sulfur (Li–S) batteries have attracted wide attention as high-energy-density energy storage devices, but their practical applications are hindered by the severe shuttle effect and sluggish kinetics of lithium polysulfides (LiPSs). To address these challenges, polar mediators are employed to chemisorb and catalyze LiPSs, but most of them suffer from low electronic conductivity and poor catalytic activity. Here, a novel strategy is reported to enhance both properties by dispersing Fe(III) atoms in VO 2 nanoribbons(Fe-VO 2 ), creating electronic metal-support interactions (EMSI) that modulate the electronic structure and charge transfer of VO 2 . Theoretical calculations reveal that EMSI lowers the energy barrier for the decomposition of Li 2 S from 1.60 to 1.32 eV and increases the electronic conductivity of VO 2 . Fe doping reduces the Li-ions diffusion barrier from 1.42 eV in VO 2 to 0.99 eV in Fe-VO 2 . The Fe-VO 2 catalyst shows strong adsorption and fast converstion of LiPSs, resulting in high energy density and long cycling life of Li-S batteries. The cathode with Fe-VO 2 maintains a higher capacity retention of 67% after 500 cycles at 1 C, compared with 52.4% and 53.6% for the carbon black based cathode and VO 2 based cathode, respectively. This work demonstrates the potential of EMSI for designing efficient catalysts for Li–S batteries and provides new insights into the electronic structure engineering of polar mediators.
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CHINESE JOURNAL OF CATALYSIS
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2023
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IF 16.5
Ce Han,Bingbao Mei,Qinghua Zhang,Huimin Zhang,Pengfei Yao,Ping Song,Xue Gong,Peixin Cui,Zheng Jiang,Lin Gu,Weilin Xu
Regulation of the atomic distribution is crucial for the development of atomically dispersed electrocatalysts. In this study, atomic Ru coordinated by channel ammonia in V-doped tungsten bronze (Ru/V-NHWO, Ru 0.44 wt%, V 0.45 wt%) was used as a high-performance catalyst for the hydrogen evolution reaction (HER), demonstrating remarkable mass activity in a wide pH range. Atomic Ru with a regulated spatial distribution and electronic structure was achieved owing to its unique coordination with the ammonia species in the hexagonal channels of V-NHWO. V doping in NHWO led to enhanced intrinsic activity and conductivity. Theoretical calculations revealed that the multichannel, vertically integrated Ru sites in the V-doped channels, as well as the coexisting Ru sites without multichannels or V-doping, improved the free energy of water dissociation and hydrogen sorption , which boosted the HER activity. Our study paves a new way for constructing atomically dispersed materials with a regulated spatial distribution for diverse applications.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
·
IF 9.9
Weiwei Wang,Rui Huang,He Peng,Ruiting Hu,Ling Ran,Yu Tao,Li Yani,Jun Yan
The emerging aqueous Zn-ion batteries (ZIBs) with their low price and inherent safety are showing strong competitiveness in the energy storage field. In this work, layer-by-layer stacked amorphous V 2 O 5 @Ti 3 C 2 T x heterostructures anchored on three-dimensional carbon cloth (3D CC), synthesized by annealing process and subsequent in-situ electrochemical induction, are reported as high capacity and stable cathode for ZIBs . In this composite cathode, amorphous V 2 O 5 @Ti 3 C 2 T x synergistic heterostructure provides isotropic Zn 2+ migration channels and rapid electron transfer kinetics, while the 3D CC substrate can ensure that the bulk phase in the electrode material is also utilized to maximize the synergistic effect. As a result, the CC/a-V 2 O 5 @Ti 3 C 2 Ti x cathode achieves a high specific capacity of 567 mAh/g at 0.1 A/g, a satisfactory rate performance of 213 mAh/g at 10 A/g, together with a long cycle life of 96.2 % capacity retention after 2000 cycles. Ex-situ characterizations show that the CC/a-V 2 O 5 @Ti 3 C 2 T x cathode undergoes a highly reversible Zn 2+ /H + co-intercalation/deintercalation mechanism during the discharge/charging process. In addition, based on the CC/a-V 2 O 5 @Ti 3 C 2 T x cathode, the assembled flexible ZIB can operate properly under different bending degrees, showing its practicality in flexible devices. This work provides insight into the rational design of cathode materials with high Zn-storage performance.
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