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Multi-channel photogenerated charge transfer in double S-scheme for promoting photostability and mineralization of pollutants

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Journal of Materials Science & technology 2024年第35期202卷 67-81页

作者： Runlin Chen Lifeng Li Yufeng Gong Hongming Lou Yuxia Pang Dongjie Yang Xueqing Qiu School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product TechnologyState Key Laboratory of Pulp and Paper EngineeringSouth China University of TechnologyGuangzhou 510640China School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China

Superior photo-mineralization of pollutants,outstanding charge separation efficiency and exceptional photostability of catalysts constitute three pivotal factors for the effective photodegradation of organic *** this study,a dual S-scheme In2 O3/Pedot/In2 S3(IO/Pedot/IS),inspired by natural photosyn-thesis,was successfully synthesized for the degradation of lignin and *** resulting exceptional semiconductor contact creates a dual-interface electric field on Pedot,facilitating multi-channel charge transport and enhancing charge separation *** establishment of the dual S-scheme hetero-junction raised the reduction-oxidation potential of the type-II In2 O3/In2 *** subjected to 5 W LED irradiation for 60 min,IO/Pedot-2/IS demonstrated a remarkable mineralization rate of 85.8%for sodium lignosulfonate(SL),surpassing the 53.7%mineralization rate achieved by IO/***,the degra-dation efficiency for tetracycline(TC)and ciprofloxacin(CIP)reached 91%and 88%,***,the hole(h+)conductivity of Pedot efficiently alleviated the photocorrosion of sulfide,ensuring robust cyclic *** simulations of natural photocatalysis showcased the exceptional versatility and applicability of IO/Pedot/***-depth analysis led to the proposal of a potential photodegradation pathway for lignin,based on the intermediates detected through liquid chromatography-mass spectrom-etry(LC-MS).Overall,this study presents an effective strategy for the efficient photocatalytic treatment of organic pollutants.

关键词： Photodegradation Lignin Pedot Photocorrosion Double S-scheme

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Competitive coordination of Na^(+)to"rescue"lithium-ion mobility in zwitterionic quasi-solid electrolytes for lithium metal batteries

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Journal of Energy Chemistry 2025年第5期104卷 52-61页

作者： Yating Zhang Yanan Zhang Weiteng Lin Xuan Li Kemeng Ji Mingming Chen Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin UniversityTianjin 300350China

Zwitterions(ZIs)are considered as an ideal,novel ionic conductive medium due to their high dipole moment and good solubility of lithium ***,the strong interactions between ZIs and Li^(+)severely hinder Li^(+)***,a quasi-solid electrolyte(MSQSE-2Na)was fabricated by adding sodium bis(fluorosulfonyl)imide(NaFSI)to sulfobetaine methacrylate(SBMA,a ZI)based polymerization ***^(+)occupies the–SO_(3)^(-)site in SBMA prior to Li^(+),which weakens the self-crosslinking of SBMA and frees the Li^(+)bound to the polymer ***,the polymer conformation of MSQSE-2Na changes to a relaxed,homogeneous"sea-island"***,Na^(+),due to its electron-withdrawing effect,decreases the electron cloud density of the polymer segments,building a weakly coordinated environment in ***,MSQSE-2Na exhibits excellent ionic conductivity of 7.38×10^(-4)S cm^(-1)and a high Li^(+)transference number of 0.632 at 25℃.The(-)Li|MSQSE-2Na|Li(+)cells exhibit super stability,sustaining operation for over ***(-)Li|MSQSE-2Na|LiFePO_(4)(+)cells demonstrate outstanding charge/discharge reversibility with a Coulombic efficiency exceeding 99.9%over 270 cycles(≈4500 h),with a capacity retention of 70.0%.This work proposes a new design concept for regulating the polymer conformation and charge characteristics through competitive coordination,thereby advancing the application of ZI-based polymer electrolytes in lithium metal batteries.

关键词： Zwitterions Quasi-solid electrolyte Li^(+)migration Na^(+)–Li^(+)competitive coordination Lithium metal batteries

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Highly selective electrosynthesis of 3,4-dihydroisoquinoline accompanied with hydrogen production over three-dimensional hollow CoNi-based microarray electrocatalysts

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Nano Research 2024年第4期17卷 2509-2519页

作者： Yu Xin Liyu Chen Yingwei Li Kui Shen Guangdong Provincial Key Lab for Green Chemical Product Technology School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510640China State Key Laboratory of Pulp and Paper Engineering School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510640China

Electrocatalytic oxidation reaction of biomass-based derivatives is an excellent candidate to replace water oxidation for obtaining both value-added products and hydrogen(H_(2)),but the exploration of competent electrocatalysts is still highly ***,two new types of three-dimensional self-supported hollow microarrays containing CoNi layered double hydroxide(CoNi-LDH)and N-doped carbon nanosheets decorated with CoNi alloyed nanoparticles(CoNi-NC)on carbon cloth(CC)are prepared,which are further used as efficient electrocatalysts for tetrahydroisoquinoline(THIQ)electrooxidation and hydrogen evolution reaction(HER),*** demonstrate that the Co-modulated electronic environment for Ni(II)/Ni(Ⅲ)redox-looping in CoNi-LDH is the main factor to boost the selectivity of 3,4-dihydroisoquinoline(DHIQ)for the indirect electrooxidation process of *** functional theory(DFT)calculations reveal that the Ni(Ⅲ)/Co(Ⅲ)dual sites of CoNi-LDH exhibit enhanced adsorption for THIQ but poorer adsorption for DHIQ compared to pure Co(Ⅲ)or Ni(Ⅲ).Therefore,the Ni(Ⅲ)/Co(Ⅲ)dual sites can effectively inhibit the peroxidation of DHIQ to isoquinoline(IQ)over CoNi-LDH,thus improving the selectivity of DHIQ to nearly 100%,much higher than that of its pure Ni ***,CC@CoNi-NC can deliver high HER activity with low overpotential(40 mV@10 mA·cm^(-2))and high exchange current density(3.08 mA·cm^(-2)).Impressively,the assembled flow-cell device with CC@CoNi-LDH anode and CC@CoNi-NC cathode only requires low cell voltage and electricity consumption of 1.6 V and 3.50 kWh per cubic meter of H_(2)(@25 mA·cm^(-2)).

关键词： highly selective electrosynthesis dihydroisoquinolines hydrogen evolution reaction metal-organic frameworks hollow microarrays

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Effects of orientation on the fatigue crack growth behaviors of the ZK60 magnesium alloy in air and PBS

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Journal of Magnesium and Alloys 2024年第1期12卷 281-294页

作者： Jiaqi Hu Zheng Liu Zuoliang Ning Hong Gao School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology Tianjin 300072China

Strong anisotropic corrosion and mechanical properties caused by specimen orientations greatly limit the applications of wrought magnesium *** investigate the influences of specimen orientation,the corrosion tests and(corrosion)fatigue crack growth tests were *** rolled and transverse surfaces of the materials show distinct corrosion rate differences in the stable corrosion stage,but the truth is the opposite for the initial stage of *** air,specimen orientations have a significant influence on the plastic deformation mechanisms near the crack tip,which results in different fatigue fracture surfaces and cracking *** with R-T specimens,N-T specimens show a slower fatigue crack growth(FCG)rate in air,which can be attributed to crack closure effects and deformation twinning near the crack *** corrosion environment will not significantly change the main plastic deformation mechanisms for the same type of ***,the FCG rate in phosphate buffer saline(PBS)is one order of magnitude higher than that in air,which is caused by the combined effects of hydrogen-induced cracking and anodic *** to the similar corrosion rates at crack tips,the specimens with different orientations display close FCG rates in PBS.

关键词： Magnesium alloy Orientation Corrosion Fatigue crack growth

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Comprehensive treatment of latex wastewater and resource utilization of concentrated liquid

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Chinese Journal of chemical engineering 2023年第5期57卷 183-192页

作者： Shichao Tian Yuming Tu Rujie Li Yufan Du Zhiyong Zhou Fan Zhang Zhongqi Ren State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China

Latex wastewater is a kind of refractory organic wastewater containing high concentrations of organics and ammonia *** this work,the combined process of forward osmosis(FO)and reverse osmosis(RO)was designed to treat the latex wastewater in the whole process,achieving the water recovery rate of 99%and basically no waste discharge after the catalytic oxidation *** turbidity of the latex wastewater was decreased to below 1 NTU by microfiltration pretreatment,and then using MgCl_2 worked as the draw solution for FO process to treat the latex *** operation conditions including adding acid or scale inhibitor as the pretreatment methods were conducted to improve the treatment performance of the combined *** the treatment of the whole process,the concentration of COD was less than 20 mg·L^(-1),the concentration of NH_3-N was less than 10 mg·L^(-1),and the concentration of TP was less than 0.5 mg·L^(-1)for the treated latex *** water quality met standards of industrial water reuse after the complete analysis of the treated latex wastewater,meanwhile,useful substances of L-Quebrachitol(L-Q)were successfully extracted from the concentrated ***,the combined process of FO and RO could realize the efficient treatment and reuse of latex wastewater,which provided with some important guidance on the industrial application.

关键词： Latex wastewater Resource utilization Forward osmosis Reverse osmosis Concentrated liquid

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Low temperature one-pot synthesis of 1,1-diethoxyethane from ethanol on Bi/BiCeO_(x)with strong metal-support interactions

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Nano Research 2023年第3期16卷 3709-3718页

作者： Zhe An Jiayu Liu Meng Cao Jian Zhang Yanru Zhu Hongyan Song Xu Xiang Jing He State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China

The direct conversion of ethanol to 1,1-diethoxyethane(DEE)through one-pot dehydrogenation-acetalization has attracted broad interest from both academia and *** on thermodynamics,the oxidative dehydrogenation of alcohol to acetaldehyde requires high temperature to activate oxygen to realize the C-H cleavage,while the acetalization of acetaldehyde with ethanol is exothermic reversible reaction favorable at low *** mismatching of the reaction condition for the two consecutive steps makes it a great challenge to achieve both high ethanol conversion and high DEE *** work reports a highly efficient bi-functional catalysis by Bi/BiCeO_(x)for one-pot oxidative dehydrogenation-acetalization route from ethanol to DEE under 150℃and ambient pressure,affording a selectivity of 98.5%±0.5%to DEE at an ethanol conversion of 87.0%±1.0%.An efficient tandem catalysis has been achieved on the interfacial Bi^(δ)+-Ov-Ce^(III)sites in Bi/BiCeO_(x)established by strong metal-support interaction,in which Biδ+-Ov-sites contribute to the oxidative dehydrogenation of ethanol at mild temperature,and-Ov-CeIII sites to the subsequent acetalization between the generated acetaldehyde and ethanol.

关键词： ethanol conversion 1 1-diethoxyethane strong metal-support interaction Biδ+-Ov-CeIII sites

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Adsorption of rubidium ion from aqueous solution by surface ion imprinted materials

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Chinese Journal of chemical engineering 2023年第2期54卷 1-10页

作者： Zhongqi Ren Jie Wang Hewei Zhang Fan Zhang Shichao Tian Zhiyong Zhou State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China

A new type of rubidium ion-imprinted polymer has been synthesized by the surface-imprinting technique using methacrylic acid as the functional monomer,the rubidium ion as the template,methanol as the solvent,and silica as a *** glycol dimethacrylate and 2,2-azobisisobutyronitrile were used as acrosslinker and an initiator,*** addition,based on the macrocyclic effect of crown ethers,the 18-crown-6 ligand was introduced as a ligand to fix the template ions *** electron microscopy,zeta-potential analysis,Fourier transform infrared spectroscopy,thermogravimetric analysis,and X-ray photoelectron spectroscopy were performed to characterize the ion-imprinted *** effects of the preparation and adsorption conditions on the adsorption performance of the rubidium ion-imprinted polymer were *** results indicated that the rubidium ion-imprinted polymer has high selectivity and faster kinetics than other adsorbents,with an equilibrium adsorption capacity of 200.19 mg·g^(-1)at 298 K within 25 *** sorption isotherm was well described by the Freundlich isotherm model,while the adsorption kinetics fitted the pseudo-second-order kinetic *** adsorption-desorption experiments showed that the ion-imprinted polymer had good chemical stability and reusability.

关键词： Surface-imprinted material Adsorption Aqueous solution Silica Selectivity

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Highly selective and green recovery of lithium ions from lithium iron phosphate powders with ozone

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Frontiers of chemical Science and engineering 2023年第6期17卷 749-758页

作者： Ruiqi Li Kang Li Wei Wang Fan Zhang Shichao Tian Zhongqi Ren Zhiyong Zhou State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China

Since lithium iron phosphate cathode material does not contain high-value metals other than lithium,it is therefore necessary to strike a balance between recovery efficiency and economic benefits in the recycling of waste lithium iron phosphate cathode ***,we describe a selective recovery process that can achieve economically efficient recovery and an acceptable lithium leaching *** the acid concentration and amount of oxidant enables selective recovery of lithium *** is retained in the leaching residue as iron phosphate,which is easy to *** effects of factors such as acid concentration,acid dosage,amount of oxidant,and reaction temperature on the leaching of lithium and iron are comprehensively explored,and the mechanism of selective leaching is *** process greatly reduces the cost of processing equipment and *** increases the potential industrial use of this process and enables the green and efficient recycling of waste lithium iron phosphate cathode materials in the future.

关键词： lithium iron phosphate powder stoichiometric number selective leaching lithium recovery

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Preparation of sodium alginate gel microspheres catalysts and its high catalytic performance for treatment of ciprofloxacin wastewater

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Chinese Journal of chemical engineering 2023年第11期63卷 158-170页

作者： Gaoyan Shao Jianjie Chen Yuming Tu Feng Liu Zhiyong Zhou Shichao Tian Zhongqi Ren State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China

The discharge of the antibiotic wastewater has increased dramatically in our country with the development of medical science and wide application of antibiotic,resulting in serious harm to human body and ecological *** this work,ciprofloxacin(CIP)was selected as one of typical antibiotics and heterogeneous Fenton-like catalysts were prepared for the treatment of ciprofloxacin *** sodium alginate(SA)gel microspheres catalysts were prepared by polymerization method using double metal ions of Fe^(3+)and Mn^(2+)as cross-linking *** conditions such as metal ions concentration,mass fraction of SA,polymerization temperature and dual-metal ions as crosslinking agent were ***,the effects of operating conditions such as initial concentration of CIP,pH value and catalyst dosage on CIP removal were *** kinetic equation showed that the effect of the initial concentration of CIP on the degradation rate was in line with second-order kinetics,and the effects of catalyst dosage and pH value on the degradation rate of CIP were in line with first-order *** SA gel microspheres catalysts prepared by dual-metal ions exhibited a high CIP removal and showed a good reusability after six *** SA gel microspheres catalysts with an easy recovery performance provided an economical and efficient method for the removal of antibiotics in the future.

关键词： Sodium alginate gel microspheres Heterogeneous Fenton-like catalysts Dual-metal ions Hydroxyl radical Ciprofloxacin wastewater

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Nitrogen-doped lignin mesoporous carbon/nickel/oxide nanocomposites with excellent lithium storage properties

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稀有金属（英文版） 2025年第2期44卷 889-900页

作者： Ping-Xian Feng Qi-Liang Chen Dong-Jie Yang Huan Wang School of Chemistry and Chemical Engineering Guangzhou Key Laboratory of Sensing Materials and DevicesGuangzhou UniversityGuangzhou 510006China Guangdong Provincial Key Lab of Green Chemical Product Technology State Key Lab of Pulp and Paper EngineeringSchool of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510640China

Developing high-capacity carbon-based anode materials is crucial for enhancing the performance of lithium-ion batteries(LIBs).In this study,we presented a nitrogen-doped lignin mesoporous carbon/nickel/nickel oxide(NHMC/Ni/NiO)nanocomposite for developing high-capacity LIBs anode materials through carbonization and selective etching *** synthesized NMHC/Ni/NiO-0.33 composite exhibited a highly regular microstructure with well-dispersed Ni/NiO *** composite had a surface area of 408 m2·g-1,a mesopore ratio of 75.0％,and a pyridine-nitrogen ratio of 58.9％.The introduction of nitrogen atoms reduced the disordered structure of lignin mesoporous carbon and enhanced its electrical conductivity,thus improving the lithium storage capabilities of the *** 100 cycles at a current density of 0.2 A·g-1,the composite demonstrated enhanced Coulomb efficiency and rate performance,achieving a specific discharge capacity of 1230.9 mAh·*** a high-current density of 1 A·g-1,the composite exhibited an excellent specific discharge capacity of 714.6 mAh·*** study presents an innovative method for synthesizing high-performance anode materials of LIBs.

关键词： Nitrogen-doped Lignin mesoporous carbon Carbon/nickel/nickel oxide Lithium-ion batteries

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