Journal of Environmental Chemical Engineering
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2024
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IF 7.4
Xiongxiong Zhang,Mei Yang,Yonggang Sun,Yuanyuan Li,Yulong Ma,Wenxin Ji
The indirect mineralization of CO 2 by industrial solid waste is an essential process for CO 2 immobilization; however, many technical challenges remain to be overcome. In this study, carbide slag (CS), a type of industrial solid waste, was used as a raw material for the indirect mineralization of CO 2 using glycine. In the extraction stage, the ion extraction efficiency of Ca significantly increased to 68.5 % due to the formation of a chelate between glycine and Ca, which enhanced Ca dissolution. Analysis of the mineralization process revealed that glycine was recycled after absorbing CO 2 , leading to increased CO 2 absorption capacity because of the high alkalinity of the extract solution. Furthermore, there was a synergistic effect between CO 2 absorption and the Ca precipitation reaction. This synergistic effect increased the reaction rate of mineralization and enhanced its efficiency. As a result, the Ca precipitation reaction was largely complete within 5 min, and the mineralization efficiency was enhanced to 93 %. Furthermore, the recirculation (indirect mineralization) results showed that the Ca extraction and mineralization efficiencies remained constant during each cycle. Most importantly, glycine could be regenerated automatically during the cycle, which proved that the cyclic indirect mineralization process could operate stably.
研究领域:
环境科学
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化学工程
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高影响因子
CRYSTENGCOMM
·
2017
·Vol. 20
·期 2
·164-172
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IF 3.474
Li Ding,Shanghong Zong,Leping Dang,Zhanzhong Wang,Hongyuan Wei
Salt-dependent polymorphic control of glycine was investigated by using the microdroplet technique in this work. Sodium chloride (NaCl) was chosen as the additive to probe the influence of inorganic ions on the polymorphic nucleation of glycine. The thermodynamics and nucleation kinetics of glycine polymorphs in microdroplets were systematically analyzed based on the microdroplet technique. The crystal structures of the polymorphs were confirmed by powder X-ray diffraction (PXRD). The results illustrate that the critical concentration of NaCl required to induce the pure γ-form in the microdroplets is lower than that in the conventional method, which means that the microdroplet technique is more sensitive for the control of polymorph nucleation. The polymorphic nucleation selectivity of glycine was then discussed in view of classical nucleation theory. The results demonstrate that NaCl reduces the nucleation energy barrier of the γ-form of glycine, and for the same form of glycine, crystallization by the conventional method has a higher interfacial tension than in microdroplets.
研究领域:
材料科学
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化学
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晶体学
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Nano Energy
·
2023
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IF 17.6
Qiao Yu,Yuan Bai,Zhe Li,Fengying Jiang,Ruizeng Luo,Yansong Gai,Zhuo Liu,Lili Zhou,Yiqian Wang,Cong Li,Kailiang Ren,Dan Luo,Hongyu Meng,Zhou Li
Flexible biodegradable piezoelectric composite films prepared by combining water-soluble rigid piezoelectric crystals with flexible polymers have immense potential in the fields of wearable and implantable bioelectronics due to their self-powered, biocompatible, and biodegradable properties. However, comprehensive research on maintaining a high piezoelectric coefficient during fabrication of a flexible film is still lacking. In this work, based on γ-glycine, a simplest natural biodegradable piezoelectric crystal, we investigated the effects of different water-soluble biodegradable polymers and film-forming interfaces on the crystal type, arrangement, structure, and piezoelectric properties . The glycine-PEO composite film prepared using the co-dissolution-evaporation method on the more hydrophobic PTFE interface exhibits a higher out-of-plane piezoelectric coefficient (d 33 ) of ∼8.2 pC/N, which is very close to the theoretical d 33 (10.4 pC/N) of the γ-glycine crystal. This study establishes that interface-induced effects have significant impacts on the crystal arrangement and piezoelectricity of composite films. This study provides important guidance for future research on flexible preparation of other flexible piezoelectric materials .
研究领域:
材料科学
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生物医学工程
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纳米技术
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压电学
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柔性电子
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Peptide Science
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2026
·Vol. 118
·期 2
·e70024
·
IF 1.7
Rongmao Qiu,Shuting Huang,Jinfeng Su,Xuanxuan Cao,Dechan Lu
Collagen, the principal structural protein in mammals, adopts a right-handed triple helix composed of three left-handed polyproline-II helical polypeptide chains featuring repeating Gly-Xaa-Yaa tripeptide motifs. Positions Xaa and Yaa frequently contain charged amino acids, which can form salt bridges to stabilize the collagen triple-helical conformation and fibril formation. Over the past decades, researchers have exploited the charged amino acids to engineer salt bridges for constructing stable collagen-based biomaterials. However, the use of amino acid analogues to form salt bridges remains largely unexplored. Herein, we report for the first time the incorporation of charged N -gly residues into host-guest collagen mimetic peptides (CMPs) to establish salt bridges. Among these, the EGNap CMP exhibited the highest T m value of 48.2°C, marginally lower than that of the OGP sequence. Molecular modeling indicates that the N -gly can form salt bridges with the amino acid, but the distance of these salt bridges is greater than that of KGD. These findings establish a foundational strategy for leveraging N -gly-mediated electrostatic interactions in collagen engineering. Graphical Substitution of an N-gly residue at the Xaa position and an amino acid residue with the opposite charge at the Yaa position in a collagen mimetic peptide results in weaker salt bridges than in the KGD sequence but stronger than DGK, destabilizing the triple helix.
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Molecular Catalysis
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2025
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IF 4.9
Zhenhang Sun,Zhi-Yuan Yao,Xiaomei Zhang,Jin-Song Gong,Guoqiang Xu,Xiaojuan Zhang,Hui Li,Jin-Song Shi,Zheng-Hong Xu
L-Cysteine, a crucial amino acid containing an active thiol group, finds extensive applications across various industries such as pharmaceuticals, food, feed, and cosmetics. Despite its significance, the efficient production of l-cysteine has long been a challenging task. This study analyzed the l-cysteine synthesis pathway in microorganisms and designed a novel synthetic route for l-cysteine utilizing glycine as a primary substrate. By employing a cell-free synthetic system catalyzed by multi-enzyme cascades, efficient synthesis of l-cysteine was achieved. The study also implemented a high-throughput screening approach for identifying rate-limiting enzymes using a l-cysteine biosensor, leading to a notable 20.12 % enhancement in the activity of the key rate-limiting enzyme, L‑serine acetyltransferase. Furthermore, through the optimization of catalytic reaction conditions, the l-cysteine titer increased by 2.06-fold, reaching a peak of 19.44 mg/L. This innovative approach utilizing a multi-enzyme cascade pathway unveils promising new avenues for l-cysteine production.
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ACS Sustainable Chemistry & Engineering
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2025
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IF 7.3
Yaju Xue,Boxia Guo,Xiuling Ji,Bowen Li,Yuhong Huang
Glycine serves as a crucial element in basic metabolic processes and acts as a precursor in the production of numerous industrial chemicals. Here we developed a streamlined artificial cascade enzyme catalysis pathway for converting CO2 into glycine through improving the CO2 activation and employing direct C–C condensation. After the optimization of enzyme combinations and dose-dependent regulation, the integration of reduced nicotinamide adenine dinucleotide regeneration and ionic liquids were introduced and facilitated the construction of an artificial cascade ionozyme catalysis system. Consequently, the glycine yield reached a remarkable 17.87-fold increase compared to that of the initial reaction system. Additional molecular simulations further demonstrated that the ionozyme possessed enhanced structural stability and substrate affinity, as indicated by an increase in hydrogen bonds and a diminished interference from water molecules in protein–ligand binding. This innovative approach holds great promise for sustainable CO2 bioconversion to glycine and other valuable chemicals.
研究领域:
合成生物学
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生物催化
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二氧化碳利用
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绿色化学
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代谢工程
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JOURNAL OF MEMBRANE SCIENCE
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2023
·
IF 9.5
Yifan Zheng,Zhuofan Zhou,Mengqiong Jiao,Le Wang,Jie Zhang,Wenjia Wu,Jingtao Wang
Proton conduction is essential for proton exchange membrane (PEM) in hydrogen fuel cell. However, the proton conductivity of most PEMs is limited by the inferior continuity of transport channels and random arrangement of transfer carriers. Here, charged vermiculite lamellar membrane with orderly aligned glycine molecules in the interlayer channel is fabricated. We demonstrate that sulfonic acid-grafted channel induces and interacts with the end amino groups of glycine molecules, forming ordered acid-base pairs along the wall. Meantime, the carboxyl groups at the other end are located in the middle of channel, forming continuous hydrogen bond networks. Such molecule arrangement creates long-range hoping highways for proton conduction. The Vr-SO 3 H@Gly membrane (∼8 μm in thickness) with 10.2 wt% glycine obtains horizontal conductivity of 378.5 mS cm −1 at 90 °C and 100% RH, 2.2 times of that of commercial Nafion membrane. Moreover, the molecule arrangement is stable helped by the strong channel-glycine and glycine-glycine interactions, rendering excellent conduction stability. These then bring high hydrogen fuel cell performances with maximum current density and power density of 604 mA cm −2 and 184 mW cm −2 , respectively, which are superior to Nafion and most reported 2D lamellar PEMs. This study should provide insights in developing advanced lamellar membranes for application in proton conduction field.
研究领域:
材料科学
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电化学
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能源材料
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燃料电池技术
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高影响因子
ADVANCED SYNTHESIS & CATALYSIS
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2025
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IF 4
Ranran Wu,Fei Li,Kaiyang Lian,Dingyu Liu,Huifeng Jiang,Zhiguang Zhu
The global demand for amino acids continues to rise, yet traditional synthesis methods face environmental and safety challenges. To contribute to a sustainable future vision, we herein report a novel cofactor-neutral in vitro multienzyme cascade that directly converts methanol, a renewable C1 feedstock, into glycine under mild conditions. A two-step strategy achieves 82.2% methanol-to-glycolaldehyde and 86.0% glycolaldehyde-to-glycine conversion, respectively. At 500 mM methanol, it yields 18.8 mM glycine after 6 h, which represents a 26.8-fold improvement over the one-pot approach. These results demonstrate the potential of modular in vitro multienzyme catalysis for efficient C1-to-amino acid transformation and establish a foundation for the synthesis of many other complex nitrogen-containing molecules.
研究领域:
生物化学
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合成生物学
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绿色化学
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生物催化
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代谢工程
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高影响因子
Small Methods
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2026
·
IF 8.7
Xi Deng,Zhihui Chen,Shouce Huang,Yueran Dong,Yujian Ding,Zhengyu Han,Jin Zhao,Jingshu Hui
Aqueous zinc-ion batteries are severely hindered by interfacial side reactions including dendrite growth and by-product accumulation, primarily caused by local pH fluctuations at the Zn/electrolyte interface. Here, we propose a dynamic interfacial pH-buffering strategy using glycine (Gly), which simultaneously anchors onto the Zn surface and regulates proton transfer through its reversible acid–base equilibria. In situ pH mapping with an ultramicroelectrode probe directly confirms that Gly effectively suppresses interfacial alkalization and maintains a stable interfacial environment during Zn plating/stripping. Benefiting from this local buffering effect, the Gly-containing electrolyte achieves a Coulombic efficiency (CE) of 99.5% in Zn||Cu cells, stable cycling over 1000 h in symmetric cells, and durable cycling for 2000 cycles in Zn||NaV 3 O 8 full cells. This work establishes interfacial pH stabilization as an important design criterion for electrolyte-additive engineering in aqueous Zn batteries.
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Journal of Energy Storage
·
2026
·
IF 10.7
Long Zhao,Ke Wang,Wenbo Wang,Xuelin Chen,Xu Zhang,Bingjun Yang,Peiyu Wang,Juan Yang,Wanjun Chen,Bao Yang,Pengjun Ma
Direct regeneration of spent LiFePO 4 (SLFP) cathode materials is crucial for the sustainable development of new energy vehicles and other energy storage sectors. However, challenges persist in conventional regeneration technology, including severe secondary pollution, low economic efficiency, and a complex regeneration process. Herein, a direct regeneration strategy for SLFP is proposed through a water bath approach, wherein the synergistic interplay between Glycine as the reducing agent and Li 2 CO 3 as the lithium source profoundly influences the regeneration of the SLFP. The direct regeneration mechanism reveal that the synergistic interaction of the reducing agent and the lithium source contribute to facilitating re-lithiation and lattice restoration, wherein Glycine as an electron donor to create a reductive environment to transform Fe(III) into Fe(II) and Li 2 CO 3 as the lithium source is synchronously reintroducing to repair the Fe Li anti-site defects in the lattice, thereby achieving the regeneration LFP (RLFP). Moreover, the nitrogen that derives from the amino groups in Glycine is doped into the carbon layer of the RLFP, offering more active sites to enhance Li + migration kinetics, thereby endowing the RLFP with excellent rate capability. The RLFP demonstrates excellent electrochemical performance with an initial discharge capacity of 155.7 mAh g −1 at 0.1C and capacity retention of 92% after 200 cycles at 0.5C. This strategy inspires novel insights into the in situ direct regeneration of the SLFP cathode materials.
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JOURNAL OF CHROMATOGRAPHY A
·
2020
·
IF 4.049
Zhenkun Mao,Zhentao Li,Changjun Hu,Yikun Liu,Qiaoyan Li,Zilin Chen
Abscract Allylglycine, a conventional amino acid derivative, possesses typical zwitterionic and hydrophilic functionalities deriving from the carboxyl and amino groups in its structure. A novel monolithic column poly(allylglycine- co -1, 3, 5-triacryloylhexahydro-1, 3, 5-triazine) (AGly- co -TAT) with powerful hydrophilic selectivity and obvious zwitterionic feature was synthesized successfully with the monomer allyglycine and the cross-linker 1, 3, 5-triacryloylhexahydro-1, 3, 5-triazine through in-situ copolymerization for capillary electrochromatography. The obtained monolithic column has good permeability. Due to the zwitterionic functional groups of allylglycine, the poly(AGly- co -TAT) monolithic column can generate a cathodic and anodic electroosmotic flow (EOF) by changing the mobile phase pH, which is beneficial to expand its application range. The separations of different series of polar analytes, thioureas, xanthines, phenols, peptides and acidic compounds are achieved on this hydrophilic monolithic column due to the powerful hydrophilic, electrostatic and hydrogen bond interactions. Using this monolithic column, hydrophilic separations are achieved even at a lower level of 50% organic solvent. The separation efficiency up to 1.41 × 10 5 N m −1 and 1.19 × 10 5 N m −1 is achieved for the separation of theophylline and phenol, respectively. For a real sample, cytochrome C digestion, the monolithic column shows good separation performance, which offers the potential application of the monolithic column on proteomics study.
研究领域:
分析化学
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分离科学
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毛细管电泳
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聚合物化学
·
生物化学
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高影响因子
Journal of Macromolecular Science Part A-Pure and Applied Chemistry
·
2013
·
IF 0.807
Tingxi Li,Chengqian Yuan,Yuhua Zhao,Quanliang Chen,Meng Wei,Yanmin Wang
Poly(o-phenylenediamine) (PoPD) submicrospheres with an average diameter of about 400 nm have been successfully synthesized in glycine solution by simply mixing o-phenylenediamine (oPD) and ammonium persulfate at room temperature. The macromolecular structure, crystallinity and thermal stability of the as-prepared product were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). Results showed that the doped PoPD is partly crystal and exhibits good thermal stability. The formation mechanism of the PoPD submicrospheres was investigated by monitoring the morphology development with the polymerization time, indicating that growth of the submicrospheres is a self-assembly process. This method is facile and applicable for the large scale fabrication of PoPD submicrospheres.
研究领域:
材料科学
·
高分子化学
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纳米材料
·
有机合成
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高影响因子
危险品化学品经营许可证（带存储）