JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Qiang Liu,Bingsi Liu,Qinze Liu,Shitong Guo,Xuanyue Wu
Developing structurally stable sorbents for high-temperature H 2 S direct removal is recognized as a valuable energy-saving strategy for efficient utilization of hot coal gas (HCG), which depends upon their mesoporous features and desulfurization capabilities. Herein, tailored hierarchical Ca x Cu y Mn z O i /MAS-9 sorbents were fabricated via a facile sol–gel method using high-activity phase Ca x Cu y Mn z O i anchored onto versatile mesoporous MAS-9. After O/S-exchange procedure, noteworthy straight channels of MAS-9 ( S BET = 808 m 2 g −1 ) provided enough available spaces for the storage of generative large MeS y nanoparticles, which was better than other conventional zeolites. The probing of variables ( i.e. support type, active ingredient, loadings, and sulfidation temperature) on H 2 S removal revealed that 50%Ca 3 Cu 10 Mn 87 O i /MAS-9 shared an excellent breakthrough sulfur capacity (171.57 mg g −1 ) at 800 °C, even it experienced six reusable cycles, due to synergistic stabilizing effect of Ca-Cu-Mn and high-temperature tolerance of Si O Al framework of MAS-9. Especially, CaO dopant endowed the sorbent with superficial alkalinity and high-temperature resistance. The brilliant desulfurization behavior was also described by the fast H 2 S diffusion or component deactivation vs . duration time on stream according to the followed kinetic investigation. Thus, the refined Ca 3 Cu 10 Mn 87 O i /MAS-9 possesses the expected representative desulfurization nature and great potentiality for raw HCG in practical applications.
研究领域:
能源化学
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环境催化
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材料科学
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化学工程
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洁净煤技术
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多相催化
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纳米材料
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高影响因子
Arabian Journal of Geosciences
·
2021
·Vol. 14
·期 8
·1-12
·
IF 1.827
Ding Kangle,Liu Yan,Guan Fujia,Yu Zhenzhen,Wu Yi
Sulfate reduction by activated carbon (AC), a model compound for solid bitumen (pyrobitumen) without gas generative potential, was studied experimentally for the first time. The simulation experiments show that hydrogen sulfide (H 2 S) is produced from hydrothermal reduction of calcium sulfate (CaSO 4 ) by AC at elevated temperatures. This result demonstrates that water can also act as a hydrogen source for H 2 S generation in addition to hydrocarbons. The formation mechanism of H 2 S may undergo a three-stage sequential process with calcium sulfide (CaS) as the unstable intermediate. The reactivity of carbon is thermodynamically higher than that of methane at ≥ 150 o C but lower than that of ethane or propane in sedimentary basins. Carbon-initiated sulfate reduction follows a zero–order reaction with an apparent activation energy E a of 172.36 kJ/mol. When extrapolated to the temperature range of typical oil and gas reservoirs (100–200 o C), the order of the rate constant is determined as propane > ethane > solid bitumen > methane in the TSR of CaSO 4 . Although solid bitumen contributes little to hydrocarbon gas generation, H 2 S derived from carbon-initiated sulfate reduction may act as an indispensable catalyst for the consequent alteration of methane by TSR in deep buried gas reservoirs with high dryness coefficient.
研究领域:
地质学
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化学
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.5
Jian He,Menghan Lu,Xinggang Wu,Haobo Gou,Ning Zhang,Zhiqiang Xu
The steel industry faces the dual pressures of carbon reduction and ultra-low emissions throughout production, making integrated CO2 capture and deep desulfurization of blast furnace gas essential. Conventional alcohol amine-based scrubbing agents have limitations such as low absorption capacity, regeneration difficulties, and high corrosivity. To address these issues, a CO2, COS (carbon oxysulfide), and H2S integrated high-efficiency removal biphasic absorbent was developed. The novel biphasic absorbent composed of sulfolane (SF), diethanolamine (DEA), 2-amino-2-methyl-1-propanol (AMP), piperazine (PZ), and H2O, achieved a removal rate of over 90% for CO2, COS, and H2S, under the tested conditions, while exhibiting low rich-phase viscosity and acceptable anti-corrosion performance. Optimal regeneration was attained at 110–120 °C, with regeneration efficiencies exceeding 85% and an estimated energy consumption of approximately 2.51 GJ per ton CO2 (about 33.9% lower than 30 wt% MEA), while exhibiting stable cyclic regeneration. Spectroscopic analyses (FTIR, 1H/13C NMR) indicate that H2S undergoes proton transfer to amine sites to form bisulfide containing quaternary ammonium salts, whereas CO2 and COS react with amine functionalities to yield carbamate and thiocarbamate species that preferentially partition into the aqueous-rich phase; sulfolane remains in the organic phase, enabling liquid–liquid separation. This research provides a promising basis for simultaneous pollution control and CO2 mitigation in the steel sector, aligning ultra-low emission targets with decarbonization efforts and offering potential environmental and economic benefits.
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KOREAN JOURNAL OF CHEMICAL ENGINEERING
·
2022
·Vol. 39
·期 11
·3039-3047
·
IF 3.146
Zhang Pan,Zhao Yuetong,Tian Xiangfeng,Ji Yanxi,Shu Yuxuan,Fu Kun,Fu Dong,Wang Lemeng
Tetramethylammonium glycine ([N 1111 ][Gly]) can be completely ionized into cation [N 1111 ] + and anion [Gly] - in aqueous solution. The anion contains an amino -NH 2 and a carboxyl -COO - , both of which can react with hydrogen sulfide (H 2 S). Therefore, [N 1111 ][Gly] was used to promote the selective absorption of H 2 S in coke oven gas (COG) by N-methyldiethanolamine (MDEA). The absorption performance and selectivity of H 2 S in the aqueous solution of MDEA-[N 1111 ][Gly] were investigated. The effects of MDEA mass fraction, [N 1111 ][Gly] mass fraction, temperature, H 2 S partial pressure and CO 2 partial pressure on the absorption capacity and selectivity were clarified. The results showed that an aqueous solution of MDEA-[N 1111 ][Gly] has good selectivity for H 2 S in COG. The absorption capacity was large and the mass fraction of the solute in the absorbent reached more than 0.55, thereby having outstanding advantages in the aspects of saving energy consumption and operating cost and having a good application potential.
研究领域:
化学工程
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环境科学
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
·
IF 5.518
Qiao Zeng,Lei Kang,Jiang Fan,Longfei Song,Shan Wan,Bokai Liao,Xingpeng Guo
A superhydrophobic coating composed of epoxy on the bottom and siloxane-modified silica on the top was prepared by employing the scraping and spraying methods. The superhydrophobic coating possesses excellent mechanical properties, is superhydrophobic (water contact angle, WCA = 164.3°), and has low adhesion. The long-term corrosion resistance of the epoxy coating and the superhydrophobic coating in a 3.5 % NaCl solution and hydrogen sulfide environment was assessed using electrochemical impedance spectroscopy (EIS), polarization curve analysis, immersion testing, and X-ray diffraction (XRD). Test results indicate that the superhydrophobic coating has excellent anti-corrosion capability in an H 2 S environment for 50 days and in a 3.5 % NaCl solution for 60 days. This is of great significance for developing the potential applications of superhydrophobic coatings in H 2 S environments.
研究领域:
材料科学
·
腐蚀工程
·
表面化学
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DOI
高影响因子
Communications Biology
·
2026
·
IF 5.8
Wang Haoran,Yang Lingyuan,Hu Jingyi,Jiang Yi,Zhang Yuting,Ren Junyu,Wu Lijie,Zou Mingyang
Autism spectrum disorder (ASD) is a complex neurodevelopmental disorder increasingly associated with aberrant astrocyte activation. Hydrogen sulfide (H 2 S) has recently emerged as a key regulator of astrocyte function, yet its role in ASD remains largely unexplored. Here, we investigated the association between H₂S modulation, ASD-like phenotypes, and astrocyte activation. In valproic acid (VPA)-exposed rats, H₂S were modulated using α-lipoic acid (LA) or aminooxyacetic acid (AOAA), a cystathionine β-synthase (CBS) inhibitor. Behavioral performance, neuronal injury, astrocyte phenotypes, H₂S levels, CBS expression and the homocysteine/cystathionine ratio were evaluated in vivo and in primary astrocytes. VPA-exposed rats exhibited reduced H₂S levels and CBS expression, an increased homocysteine/cystathionine ratio, ASD-like behavioral deficits and neuronal injury, and astrocyte activation toward a neurotoxic A1 phenotype. Elevation of H 2 S by LA was associated with improvements in ASD behavioral performance, reduced neuronal damage, reduced inflammatory cytokines and suppressed astrocyte activation, with changes in astrocyte marker expression towards a more A2-like, neuroprotective profile. Conversely, AOAA reversed these beneficial effects. Collectively, these findings suggested enhanced H₂S signaling is linked to improvements in ASD-like behavioral and neuropathological abnormalities, alongside modulation of astrocyte activation involving the CBS/H₂S pathway. These findings highlight the potential involvement of the CBS/H₂S axis in ASD-related pathology.
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高影响因子
FUEL
·
2026
·
IF 7.8
Jiaqi Yu,Yuxin Wen,Shuo Wang,Rui Zhang,He Yang,Yang Li,Xingxing Xiao,Yining Guan,Haoquan Hu,Lijun Jin
Alleviating the harsh liquefaction conditions still remains huge challenge in the process of direct coal liquefaction. To investigate the feasibility of mild coal liquefaction and develop strategies for alleviating reaction conditions, this study adopted a typical low-rank oil-rich coal from Xinjiang as the feedstock, and the effects of initial H 2 pressure, solvent types (9,10-dihydroanthracene (DHA), tetralin (THN), pyrene/tetralin (Py/THN)), catalyst sulfidation method ( in-situ and ex-situ ), and H 2 S atmosphere on liquefaction performances were evaluated under lower H 2 pressure over the Fe-based catalysts. Results show that, at lower initial H 2 pressure (≤5 MPa), the decrease in pressure leads to the decline of coal conversion and oil yield, along with the increase in the yields of asphaltene and preasphaltene. Coal conversion and oil yield under different solvents increased in the order of DHA < Py/THN < THN, indicating that the solvent with good H-donating ability but no H-consumption for itself is vital to improve oil yield. Besides, whether Fe 2 O 3 or FeOOH is used as the iron precursor, in-situ sulfidation of the catalyst contributed to higher oil yield than pre-sulfidation. It is analyzed that the iron precursor undergoes the sulfidation reactions and the produced H 2 S and Fe 1−x S during the process promote H-transfer, thereby improving coal conversion and oil yield. Introducing H 2 S into H 2 atmosphere can remarkably increase coal conversion and oil yield. The oil yield is up to 69.89 wt% under 5%H 2 S/H 2 atmosphere and initial pressure of 5 MPa, close to that under 7 MPa and pure H 2 atmosphere, which is attributed to lower bond energy of the S-H bond. Both the hydrogen free radicals and mercapto free radicals (•HS) generated after the cleavage of H 2 S can stabilize free radicals produced from coal cracking and suppress the polycondensation reaction of the free radicals under low H 2 pressure, thereby increasing oil yield.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2024
·
IF 4.3
Zixuan Teng,Huimin Shangguan,Longfei Liu,Shihu Zhang,Guanlin Li,Zishi Cheng,Fengpei Qi,Xingjiang Liu
The ubiquity of diverse material entities in environmental matrices renders the deployment of unifunctional fluorescent indicators inadequate. Consequently, this study introduces a ratiometric dual-emission fluorescent sensor ( Probe CP ), synthesized by conjugating phenothiazine coumarin to hydroxycoumarin through a piperazine linker for concurrent detection of HClO and H 2 S. Upon interaction with HClO, the phenothiazine unit's sulfur atom undergoes oxidation to sulfoxide, facilitating a shift from red to green fluorescence in a ratiometric manner. Concurrently, at the opposite terminus of Probe CP , 2,4-dinitroanisole serves as the reactive moiety for H 2 S recognition; it restores the blue emission characteristic of 7-hydroxycoumarin while maintaining the red fluorescence emanating from phenothiazine coumarin as an internal standard for ratio-based assessment. Exhibiting elevated specificity and sensitivity coupled with minimal detection thresholds (0.0506 μM for HClO and 1.7292 μM for H 2 S) alongside rapid equilibration periods (3 min for HClO and half an hour for H 2 S), this sensor was efficaciously employed in cellular environments and within zebrafish models as well as imaging applications pertaining to alcohol-induced hepatic injury in murine subjects.
研究领域:
生物化学
·
分析化学
·
医学诊断
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zhichao Hao,Xu Sun,Lifeng Zhang,Ruikai Wang,Haiyan Li,Junjie Qin,Chenghui Xia,Bohua Dong,Lixin Cao
Photoelectrochemical (PEC) H 2 S splitting offers a dual-functional strategy for sustainable hydrogen sulfide valorization and atmospheric remediation, but it is still hindered by sluggish charge dynamics and poor stability. Here, we pioneer a hierarchical ZnFe 2 O 4 /ZnIn 2 S 4 /NiCoP photoanode that synergistically integrates heterojunction engineering and surface cocatalyst modification to address these challenges. The enhanced photoinduced carrier separation is accomplished by ZnFe 2 O 4 /ZnIn 2 S 4 through accelerated charge transfer kinetics with role of built-in electric field and hybrid energy bands. Corresponding sulfur oxidization photocurrent density of 2.24 mA/cm 2 is achieved that is 8.30 folds higher than that of pristine ZnFe 2 O 4 . Subsequent modification with NiCoP nanoparticles further optimizes the surface electronic states, which include increased DOS and decreased R ct,trap , leading to accelerated charge injection dynamics and suppressed carrier recombination at the surface. Meanwhile, PEC stability of the heterojunction is increased to 77 % from 62 % stemmed from desulphurization role of NiCoP protective layer, that is extremely higher than 44 % of ZnFe 2 O 4 . The prime PEC sulfur oxidization reaction kinetics are displayed by ZnFe 2 O 4 /ZnIn 2 S 4 /NiCoP with charge transfer efficiency improved to 22.70 % from 2.45 %. Hence, sulfur oxidization photocurrent density of ZnFe 2 O 4 is enhanced to 3.44 mA/cm 2 from 0.27 mA/cm 2 with light absorption edge of 558 nm. This work not only demonstrates the highest reported PEC H 2 S splitting performance but also provides a universal design framework-combining bandgap engineering with surface state modulation—for developing robust photoelectrodes in toxic gas valorization systems.
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FUEL
·
2023
·
IF 7.4
Leipeng Ji,Zhisong Liu,Zihao Li,Wenjun Huang,Haomiao Xu,Zan Qu,Naiqiang Yan
The gypsum from flue gas desulfurization or the neutralization (D/N gypsum) process of acid wastewater, is an industrial by-product in nonferrous metal smelters. The S and Ca sources of D/N gypsum have significant application prospects. However, the S(IV) reduction is difficult due to the electronic inactivity of CaSO 4 and the stability of the S-O band. Our experimental results indicated that the start-up temperature of CaSO 4 reduced by CH 4 is 900 ℃. However, adding H 2 S gas with a H 2 S/CaSO 4 (S/Ca) ratio of 0.2, the start-up temperature of CaSO 4 reacted with CH 4 decreases to 650 ℃. With the increase of the S/Ca ratio from 0.04 to 0.2, the yield of CaS increased to 94.97%, and the selectivity toward CO 2 formation increases to 71.67%. In-situ diffuse reflectance Fourier transformations spectroscopy (in-situ DRIFTs) results indicate that adding H 2 S generates the new sulfide groups on the surface of CaSO 4 , resulted from the S(-II) in H 2 S changing the distribution of valence electrons of O and activating O. Moreover, the density functional theory (DFT) calculation results exhibit that the activation energy for the first O dissociation decreases to 2.89 eV in the presence of H 2 S. Furthermore, H 2 S optimized the reaction path of CH 4 and improved the selectivity toward CO 2 formation. Comparing to 1000 ℃ without H 2 S, under 800 ℃ with H 2 S, the consumption of CH 4 reduces to 45%, and the CO 2 selectivity increases to 71.67%. Thus, we have developed a method of CaSO 4 low-temperature reduction and provide a theoretical basis for its application in engineering.
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Chemosensors
·
2023
·Vol. 11
·期 1
·31
·
IF 4.2
Xilai Lu,Menghan Wu,Yong Huang,Jiannan Song,Yong Liu,Zhiqiao Yan,Feng Chen,Jieting Zhao,Wanping Chen
The slight but cumulative influence of impurity gases in air poses a great threat to the long-term stability of room-temperature gas sensors. Room-temperature hydrogen-sensitive Pt–SnO2composite nanoceramics of 5 wt% Pt were prepared through pressing and sintering. The response of a sample was over 10,000 after being exposed to 500 ppm H2S–20% O2–N2at room temperature, and the room-temperature hydrogen sensing capacity was seriously degraded even for samples that had aged dozens of days since H2S exposure. Mild heat treatments such as 160 °C for 10 min were found able to fully activate those H2S-exposed samples. As the peak of S 2p electron was clearly detected in H2S-exposed samples, it was proposed that for room-temperature hydrogen-sensitive Pt–SnO2composite nanoceramics, H2S exposure induced degradation results from the poisoning of Pt by H2S deposited on it, which can be removed through a mild heat treatment. Periodic mild heat treatment should be a convenient and effective measure for room-temperature metal oxide gas sensors to achieve long-term stability through preventing the accumulation of impurity gases in air deposited on them.
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Theranostics
·
2020
·
IF 8.579
Qingqing Tian,Lu An,Qiwei Tian,Jiaomin Lin,Shiping Yang
Rationale : Chemodynamic therapy (CDT) based on the Fe(II)-mediated Fenton reaction is an emerging tumor treatment strategy. However, the catalytic efficiency in tumors is crucially limited by Fe(II). Herein, an endogenous hydrogen sulfide (H 2 S) accelerated Fe(III)/Fe(II) transformation and photothermal synergistically enhanced CDT strategy based on ellagic acid-Fe-bovine serum albumin (EA-Fe@BSA) nanoparticles (NPs) was developed for colon tumor inhibition. On the one hand, the Fe(III) with low catalytic activity in the EA-Fe@BSA NPs could be rapidly reduced to the highly active Fe(II) by the abundant H 2 S in colon cancer tissues. Thus, a rapid Fe(III)/Fe(II) conversion system was established, wherein highly active Fe(II) ions were continuously regenerated to improve the CDT efficiency. On the other hand, the photothermal effect of EA-Fe@BSA NPs also accelerated the production of hydroxyl radicals (•OH), thereby synergistically enhancing the CDT performance and improving the therapeutic efficacy. Methods : The endogenous H 2 S accelerated Fe(III)/Fe(II) conversion and PTT enhanced CDT were investigated by characterization of the Fe valence state and detection of •OH. T 1 -weighted magnetic resonance imaging (MRI) was tested both in vitro and in vivo . The biocompatibility of NPs were examined via MTT assay, hemolysis analysis and routine blood measurements. The enhanced CDT was investigated in HCT116 colon cancer cells by Calcein-AM/PI staining and MTT assay, and tumor inhibition was demonstrated in HCT116 tumor bearing mice. Results : In this work, EA-Fe@BSA NPs were constructed as a CDT theranostic reagent. The H 2 S accelerated Fe(III)/Fe(II) conversion was confirmed, more degradation of MB and generation of •OH demonstrated the enhanced CDT in vitro . EA-Fe@BSA NPs exhibited good T 1 -weighted MRI performance. More importantly, it displayed strong near-infrared (NIR) absorption and excellent photothermal efficiency, further promotes the production of •OH. Hence, the efficacy of CDT was enhanced, and the tumor growth was inhibited efficiently. Conclusion : All results demonstrate that this strategy based on endogenous H 2 S promoted Fe(III)/Fe(II) transformation together with PTT acceleration permits efficient Fenton-reaction- mediated CDT both in vitro and in vivo , which holds great potential for effective colon cancer theranostics.
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高影响因子
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