SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Mingzhen Shi,Wenjie Xiong,Xiaomin Zhang,Jialan Ji,Xingbang Hu,Zhuoheng Tu,Youting Wu
Highly efficient and selective H 2 S capture is of great scientific significance for natural gas sweetening. However, there was seldom research concerned about the chemical absorption of H 2 S in deep eutectic solvents (DESs) and the absorption capacity is hard to be satisfactory. In this work, we propose a new strategy of designing task-specific DESs endowed with chemical dual sites for H 2 S capture. Therefore, four task-specific DESs bearing with tertiary amine and acetate anion, including [C 1 -TMHDA]Ac-MDEA (1:2), [C 1 -TMHDA]Ac-Pyrol (1:2), [C 1 -TMHDA]Ac-AA (1:2), and [C 1 -TMHDA]Ac-Im (1:2), were designed and prepared. Among them, [C 1 -TMHDA]Ac-MDEA (1:2) showed the unprecedented H 2 S absorption capacity of 1.44 mol/mol at 313.2 K and 1.0 bar, surpassing all the reported absorbents. The interaction mechanism was elucidated by both spectroscopic analysis and quantum chemical calculations. In addition, five consecutive absorption–desorption cycles were performed and evaluated the recyclability of [C 1 -TMHDA]Ac-MDEA (1:2) by heating and evacuating. Compared with other absorbents, these task-specific DESs represent prominent superiority on both H 2 S absorption capacity and H 2 S/CO 2 selectivity, which are expected to be excellent alternatives in the field of acid gas separation.
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Feng Zhu,Xingyun Hu,Linghao Kong,Xianjia Peng
Sulfide precipitation is an efficient method to remove Cu(II) and As(III) from strongly acidic wastewater, but the instantaneous release of H 2 S from traditional sulfuration reagents causes serious H 2 S pollution. Moreover, the obtained precipitates are mixtures of CuS and As 2 S 3 , leading to difficulties in resource recovery. In this study, a calcium sulfide-organosilicon complex (CaS-OSCS), in which CaS was coated into a matrix of {[O 1.5 Si(CH 2 ) 3 NH]CS} n (OSCS) via the coordination bonding, was developed. OSCS, as a matrix of CaS-OSCS, can ensure the sustained and stable release of H 2 S under strongly acidic conditions owing to its low swelling (1.75% swelling ratio) and excellent acid resistance. The release longevity of H 2 S from CaS-OSCS extended from 5 min up to 50 min compared with that from CaS because the hydrophobic OSCS prevented solution diffusing to the pores of CaS-OSCS and thus slowed down the hydrolysis of CaS in pores. 99% of Cu(II)/As(III) was precipitated without H 2 S escape, and the dosage of sulfuration reagents was reduced by 30%. In addition, CaS-OSCS improved the selective separation of copper from wastewater, and a separation factor between Cu(II) and As(III) reached 2376. This study provides a potential approach for the elimination of H 2 S pollution and selective recovery of copper.
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DOI
PubMed
高影响因子
AICHE JOURNAL
·
2020
·Vol. 66
·期 6
·e16936
·
IF 3.519
Xiaomin Zhang,Wenjie Xiong,Lingling Peng,Youting Wu,Xingbang Hu
Recently, the selective removal of H 2 S and CO 2 has been highly desired in natural gas sweetening. Herein, four novel azole-based protic ionic liquids (PILs) were designed and prepared through one-step neutralization reaction. The solubility of H 2 S (0–1.0 bar), CO 2 (0–1.0 bar), and CH 4 (0–5.0 bar) was systematically measured at temperatures from 298.2 to 333.2 K. NMR and theoretical calculation were used to investigate the reaction mechanism between these PILs and H 2 S. Reaction equilibrium thermodynamic model (RETM) was screened to correlate the H 2 S solubility. Impressively, 1,5-diazabicyclo[4,3,0] non-5-ene 1,2,4-1H-imidazolide ([DBNH][1,2,4-triaz]) shows the highest H 2 S solubility (1.4 mol/mol or 7.3 mol/kg at 298.2 K and 1.0 bar) and superior H 2 S/CH 4 (831) and CO 2 /CH 4 (199) selectivities compared with literature results. Considering the excellent absorption capacity of H 2 S, high H 2 S/CH 4 , and CO 2 /CH 4 selectivity, acceptable reversibility, as well as facile preparation process, it is believed that azole-based PILs provide an attractive alternative in natural gas upgrading process.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2020
·
IF 3.573
Junlei Zhan,Beibei Wang,Liangliang Zhang,Bao-Chang Sun,Jiwen Fu,Guang-wen Chu,Haikui Zou
This work presented experimental and modeling studies on the simultaneous absorption of H2S and CO2 into the N-methyldiethanolamine (MDEA) and piperazine (PZ) solution in a rotating packed bed (RPB). The effect of different operating conditions, including MDEA concentration (CMDEA), PZ concentration (CPZ), liquid volumetric flow rate (L), temperature (T), and high gravity factor (β) on the absorption efficiencies of H2S and CO2 (ηH2S and ηCO2) were investigated. The results showed that ηH2S and ηCO2 were significantly affected by CMDEA, CPZ, L, and β. ηH2S and ηCO2 could reach 99.98 and 96.51%, respectively. Furthermore, an artificial neural network (ANN) model was established to predict ηH2S, ηCO2, and mass-transfer coefficient (KGa). Results showed that the predicted values were in good agreement with the experimental values (within deviations of ±10% for H2S and CO2). This work provides a potential technology of simultaneous absorption of H2S and CO2 for the biogas upgrade.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Cheng Feng,Congting Zhang,Chang Xu,Shuang Lin,Baohua Zhang,Huanxing Wu,Zheng Zhang,Xinming Guo,Haineng Bai,Fuqiang Guo
The detection of H 2 S for biomarkers or special occasions often requires a lower detection limit. In this work, the ppb-level H 2 S sensor based on MoO 3 /CuO/g-C 3 N 4 (MCC) was presented by a simple method. The characterized results show that MCC-2 possesses a larger specific surface area, and has more adsorbed oxygen and oxygen vacancy compared to MoO 3 and MoO 3 /CuO. The gas-sensitive test results show that the response of the MCC-2 sensor to 1000 ppb H 2 S is up to 8.24 at room temperature , which is 1.31 times of MoO 3 /CuO (6.28). More importantly, the theoretical detection limit of the MCC-2 sensor is as low as 1.1 ppb, which is the lowest in the recent H 2 S sensor. In addition, the MCC-2 sensor has reliable repeatability, excellent selectivity to H 2 S, and still maintains a high response after continuous test for 5 weeks. Simultaneously, the MCC-2 sensor also keeps an outstanding response at high relative humidity. The excellent gas sensing properties are due to the larger specific surface area that can enable more gases to be adsorbed on the material surface. In addition, the oxygen vacancy reduces the energy required to adsorb the target gas and the formed heterojunctions by MoO 3 /CuO/g-C 3 N 4 expedite carrier migration.
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DOI
高影响因子
DYES AND PIGMENTS
·
2018
·
IF 3.767
Han Zhang,Xiang Xia,Hong Zhao,Guo-Ning Zhang,Dao-Yong Jiang,Xing-Ying Xue,Jiao Zhang
Hydrogen sulfide (H 2 S) and biothiols such as cysteine (Cys), homocysteine (Hcy) and glutathione (GSH), play critical roles in physiological and pathological processes. However, due to the challenge in sensing H 2 S and biothiols simultaneously, it is of great importance to solve this problem in biological processes. Herein, a near-infrared fluorescent probe (HZ-NBD) based on S N Ar reactions was exploited to achieve the sensitive and selective detection of H 2 S and glutathione (GSH) simultaneously in the same conditions. The design strategy was employing dicyanoisophorone based fluorescent dye as the fluorophore, the NBD moiety as a response unit and a quencher of fluorophore. The probe exhibited a low limit of detection to H 2 S (13.2 nM) and GSH (112 nM) as well as a favourable large stokes shift (112 nm). The reaction mechanism was investigated via mass spectra. What's more, owing to the advantages of low cytotoxicity, fast response and strong anti-interference ability, the probe HZ-NBD was successfully applied to bioimage H 2 S and GSH in HepG2 cells and zebrafish.
研究领域:
生物学
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医学
·
化学
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高影响因子
Green Chemical Engineering
·
2022
·
IF 0
Lingling Peng,Mingzhen Shi,Xiaomin Zhang,Wenjie Xiong,Xingbang Hu,Zhuoheng Tu,Youting Wu
Selective separation of CO 2 and H 2 S from CH 4 is of importance to the natural gas upgrading because of its corrosivity. As is well known, amine group can recognize reversibly CO 2 and H 2 S with a moderate interaction. With this in mind, this work prepared a series of amine-functionalized supported-protic-ionic-liquid membranes (SPILMs) for the selective separation of CO 2 and H 2 S from CH 4 . For comparison, aprotic ionic liquid membrane was also prepared for natural gas sweetening. The effect of temperature and transmembrane pressure difference on the permeability of single gas and ideal selectivity of CO 2 /CH 4 and H 2 S/CO 2 were studied. Facilitated transport mechanism was studied by NMR spectra. The permeability of CO 2 in primary amine functionalized [DMPDAH][Tf 2 N]-based membrane decreases with the increasing transmembrane pressure, indicating a typical feature of facilitated transport membrane. The permeability of CO 2 and the ideal selective of CO 2 /CH 4 are as high as 2000 barrers and 53.2 at 313.2 K in [DMPDAH][Tf 2 N] membrane, significantly higher than those in conventional ILs membrane. It is anticipated that these amine-functionalized SPILMs can provide alternative insight for the selective separation of CO 2 and H 2 S from CH 4 .
研究领域:
化学工程
·
环境科学
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DOI
ENERGY & FUELS
·
2017
·
IF 3.091
Pengrui Jin,Chuan Huang,Yadong Shen,Xinyuan Zhan,Xinyue Hu,Lei Wang,Liao Wang
The present work studied the simultaneous separation of H2S and CO2 from biogas by gas–liquid membrane contactor (GLMC) using single and mixed absorbents. The synthetic biogas contained 300 to 900 ppm of H2S, 30% to 50% CO2 and CH4. To better understand the effects of different absorbents on simultaneous separation of H2S and CO2 from biogas, water, monoethanolamine (MEA, primary amine), potassium carbonate (K2CO3, inorganic salt), potassium hydroxide (KOH, inorganic salt), and potassium sarcosine (PS, organic salt) were applied as absorbent solutions. Poly(vinylidene fluoride) (PVDF) hollow fiber membrane was used in the membrane contactor modules. The simultaneous absorption performance of CO2 and H2S into single and mixed absorbents was investigated. In addition, the effects of liquid and gas velocities, absorbent concentration, acid gas content of the feed gas, and gas pressure on the absorption performance and the analysis of mass transfer coefficients were investigated. The results indicated that the highest H2S absorption flux was obtained when KOH and K2CO3 were used as single absorbents, and the highest CO2 flux was obtained using PS as the single absorbent. The use of promoted K2CO3 with PS solutions could simultaneously improve the absorption flux of H2S and CO2. Increasing the liquid flow rate and absorbent concentration led to an increase in the CO2 absorption flux, while increasing the gas flow rate led to a significant increase in H2S absorption; The change of liquid flow rate has little effect on H2S absorption flux. A long-term stability test revealed that partial wetting of membrane could reduce the CO2 absorption flux but has little effect on H2S absorption flux. The detailed analysis of the mass transfer coefficients showed that liquid side resistance was negligible in comparison with membrane and gas side resistances for H2S absorption. On the contrary, the mass transfer process of CO2 was controlled by liquid mass transfer resistance.
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高影响因子
Small
·
2024
·Vol. 20
·期 32
·2311840
·
IF 13
Xinhua Zhao,Lingling Du,Xiaxia Xing,Zhenxu Li,Yingying Tian,Xiaoyu Chen,Xiaoyan Lang,Huigang Liu,Dachi Yang
With the recently-booming hydrogen (H 2 ) economy by green H 2 as the energy carriers and the newly-emerged exhaled diagnosis by human organ-metabolized H 2 as a biomarker, H 2 sensing is simultaneously required with fast response, low detection limit, and tolerant stability against humidity, switching, and poisoning. Here, reliable H 2 sensing has been developed by utilizing indium oxide nanocubes decorated with palladium and gold nanodots (Pd–Au NDs/In 2 O 3 NCBs), which have been synthesized by combined hydrothermal reaction, annealing, and chemical bath deposition. As-prepared Pd–Au NDs/In 2 O 3 NCBs are observed with surface-enriched NDs and nanopores. Beneficially, Pd–Au NDs/In 2 O 3 NCBs show 300 ppb-low detection limit, 5 s-fast response to 500 ppm H 2 , 75%RH-high humidity tolerance, and 56 days-long stability at 280 °C. Further, Pd–Au NDs/In 2 O 3 NCBs show excellent stability against switching sensing response, and are tolerant to H 2 S poisoning even being exposed to 10 ppm H 2 S at 280 °C. Such excellent H 2 sensing may be attributed to the synergistic effect of the boosted Pd–Au NDs’ spillover effect and interfacial electron transfer, increased adsorption sites over the porous NCBs’ surface, and utilized Pd NDs’ affinity with H 2 and H 2 S. Practically, Pd–Au NDs/In 2 O 3 NCBs are integrated into the H 2 sensing device, which can reliably communicate with a smartphone.
研究领域:
材料科学
·
传感器技术
·
纳米技术
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高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2026
·Vol. 24
·期 1
·548
·
IF 15
Zhou Fanshangmin,Xu Jiani,Du Yun,You Chang,Xu Chenyang,Shi Lei,Fu Wenxiang,Kong Keyu,Zhu Xinchen,Fang Zhen,Wang Huilin,Yang Shengbing,Huang Kai,Sun Dachuan,Nie Ping,Wang Xin,Xie Youzhuan
Surgical site infections (SSIs) represent a global healthcare burden, a challenge intensified by the increasing prevalence of antibiotic resistance. To address drug-resistant bacterial infections, various non-antibiotic therapeutic strategies have been explored, among which sonodynamic therapy (SDT) has emerged as a promising approach due to its deep tissue penetration and controllability. Nevertheless, bacteria are not defenseless against SDT and can produce endogenous hydrogen sulfide (H₂S) as an antioxidant to resist reactive oxygen species (ROS)-mediated killing, thereby limiting therapeutic efficacy. Herein, we reported a dual-functional and synergistic sonodynamic antibacterial strategy based on two-dimensional bismuth porphyrin metal–organic frameworks (Bi-TCPP). Bi-TCPP simultaneously functioned as an efficient sonosensitizer to generate singlet oxygen ( 1 O₂) under ultrasound irradiation and as an effective scavenger of bacterial-derived H₂S through strong Bi³⁺–H₂S interactions. By weakening the bacterial antioxidant reduction system and disrupting redox homeostasis, this strategy enabled efficient bacterial eradication via low-level ROS, thereby significantly amplifying SDT-mediated antibacterial efficacy. The effectiveness of this synergistic strategy was systematically demonstrated against multiple bacterial species, including drug-resistant strains and different survival states such as planktonic bacteria and biofilms in vitro. It was further validated in vivo, highlighting its potential as an alternative therapeutic approach for treating drug-resistant bacterial infections. Graphical abstract The alternative text for this image may have been generated using AI.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Guodong Wang,Yuying Cai,Linlin Dong,Yuchen Jiang,Ying Zhou,Xiao Ye,Junjun Wang,Lanlan Guo,Xiaojie Li,Xiaolian Liu
For metal oxide semiconductor gas sensors, surface reactions are central to their sensing performance. Herein, we propose a strategy for constructing high-performance composite sensing materials by introducing HEOs hollow spheres. Employing In 2 O 3 nanofibers as the sensing substrate leverages their favorable charge carrier transport characteristics, while the innovative incorporation of HEOs hollow spheres with unique physicochemical properties effectively enhances H 2 S detection. Through electrospinning technology, we successfully fabricated HEOs/In 2 O 3 composite nanofibers with different HEOs loading amounts. The optimal sample exhibited an ultrahigh response of 3200 toward 1 ppm H 2 S at 120°C, accompanied by a substantially shortened response time of 31 s and a low detection limit of 5 ppb. Notably, the operating temperature was reduced from 180°C to 120°C, while excellent selectivity and long-term stability were maintained. Characterization results demonstrate that the decoration of HEOs hollow spheres not only modulates the microscopic morphology but also enriches the surface oxygen vacancy concentration, which serves as the critical factor for the enhanced H 2 S sensing performance of the composite sensor, providing a novel platform and theoretical foundation for the rational design of next-generation high-performance H 2 S sensors.
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 10.6
Jiongyue Hao,Chun Huang,Hangyu Liu,Wen Niu,Xuefeng Chen,Kazuki Nagashima,Zetao Zhu,Mati Horprathum,Fuguo Wang,Gang Meng,Di Peng,Maozhu Zhang,Rui Yang,Wei Hu,Xiangshu Miao,Yongcai Guo,Yong He
Artificial olfaction systems face a fundamental trade-off between device simplicity and discriminative capacity, particularly in detecting target gases within complex mixtures. While biological olfaction leverages dynamic sniffing strategies to enhance selectivity with limited receptors, conventional electronic noses rely on sensor arrays, increasing system complexity and power consumption. Here, we report a bio-inspired pseudo-breathing strategy coupled with a single SnSe/NiO heterojunction sensor to achieve highly selective H 2 S detection in mixed volatile sulfur compounds (VSCs) backgrounds. The heterojunction design creates enhanced surface activity and facilitates rapid charge carrier exchange, enabling fast and sensitive operation at room temperature. By implementing rhythmic adsorption-desorption cycles, we generate time-resolved spectral fingerprints that encode analyte-specific information. Combined with pattern recognition algorithms, this approach allows a single sensor to distinguish H 2 S from interfering VSCs in binary/ternary mixtures. This work demonstrates a paradigm for the classification of H 2 S-containing volatile sulfur compound (VSC) mixtures using an actively modulated single sensor, bridging materials innovation and dynamic sensing mechanisms to overcome the limitations of array-based systems.
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高影响因子
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