Composite Ferroelectric and Plasmonic Particles for Hot Charge Separation and Photocatalytic Hydrogen Gas Production

2018 ◽  
Vol 1 (9) ◽  
pp. 4606-4616 ◽  
Author(s):  
Nathalia Ortiz ◽  
Brandon Zoellner ◽  
Vineet Kumar ◽  
Tara Janelli ◽  
Shuli Tang ◽  
...  
Keyword(s):  
Charge Separation ◽  
Gas Production ◽  
Hydrogen Gas ◽  
Plasmonic Particles

scholarly journals Dose–Response Effects of 3-Nitrooxypropanol Combined with Low- and High-Concentrate Feed Proportions in the Dairy Cow Ration on Fermentation Parameters in a Rumen Simulation Technique

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1784
Author(s):  
Matthias Schilde ◽  
Dirk von Soosten ◽  
Liane Hüther ◽  
Susanne Kersten ◽  
Ulrich Meyer ◽  
...  
Keyword(s):  
Dose Response ◽  
Gas Production ◽  
Hydrogen Gas ◽  
Simulation Technique ◽  
Mitigation Strategies ◽  
Feed Additive ◽  
Future Research ◽  
Dependent Manner ◽  
Dose Dependent

Methane (CH4) from ruminal feed degradation is a major pollutant from ruminant livestock, which calls for mitigation strategies. The purpose of the present 4 × 2 factorial arrangement was to investigate the dose–response relationships between four doses of the CH4 inhibitor 3-nitrooxypropanol (3-NOP) and potential synergistic effects with low (LC) or high (HC) concentrate feed proportions (CFP) on CH4 reduction as both mitigation approaches differ in their mode of action (direct 3-NOP vs. indirect CFP effects). Diet substrates and 3-NOP were incubated in a rumen simulation technique to measure the concentration and production of volatile fatty acids (VFA), fermentation gases as well as substrate disappearance. Negative side effects on fermentation regarding total VFA and gas production as well as nutrient degradability were observed for neither CFP nor 3-NOP. CH4 production decreased from 10% up to 97% in a dose-dependent manner with increasing 3-NOP inclusion rate (dose: p < 0.001) but irrespective of CFP (CFP × dose: p = 0.094). Hydrogen gas accumulated correspondingly with increased 3-NOP dose (dose: p < 0.001). In vitro pH (p = 0.019) and redox potential (p = 0.066) varied by CFP, whereas the latter fluctuated with 3-NOP dose (p = 0.01). Acetate and iso-butyrate (mol %) decreased with 3-NOP dose, whereas iso-valerate increased (dose: p < 0.001). Propionate and valerate varied inconsistently due to 3-NOP supplementation. The feed additive 3-NOP was proven to be a dose-dependent yet effective CH4 inhibitor under conditions in vitro. The observed lack of additivity of increased CFP on the CH4 inhibition potential of 3-NOP needs to be verified in future research testing further diet types both in vitro and in vivo.

scholarly journals Photodeposition of Ag Nanocrystals onto TiO2 Nanotube Platform for Enhanced Water Splitting and Hydrogen Gas Production

2020 ◽  
Vol 2020 ◽  
pp. 1-11 ◽  
Author(s):  
Nur Aimi Jani ◽  
Choonyian Haw ◽  
Weesiong Chiu ◽  
Saadah Abdul Rahman ◽  
Poisim Khiew ◽  
...  
Keyword(s):  
Water Splitting ◽  
Gas Production ◽  
Hydrogen Gas ◽  
Current Work ◽  
Plasmonic Resonance ◽  
X Ray Diffraction ◽  
X Ray ◽  
Production Of Hydrogen ◽  
Production Activity ◽  
Ag Ncs

Current work reports the study of Ag nanocrystals (NCs) decorated doubly anodized (DA) TiO2 nanotubes (NTs) thin film as an efficient photoelectrode material for water splitting and photocatalytic hydrogen gas production. DA process has been shown to be capable of producing less defective NTs and creating additional spacious gaps in between NT bundles to allow efficient and uniform integration of Ag NCs. By employing photoreduction method, Ag NCs can be deposited directly onto NTs, where the size and density of coverage can be maneuvered by merely varying the concentration of Ag precursors. Field emission scanning electron microscope (FESEM) images show that the Ag NCs with controllable size are homogeneously decorated onto the walls of NTs with random yet uniform distribution. X-ray diffraction (XRD) results confirm the formation of anatase TiO2 NTs and Ag NCs, which can be well indexed to standard patterns. The decoration of metallic Ag NCs onto the surface of NTs demonstrates a significant enhancement in the photoconversion efficiency as compared to that of pristine TiO2 NTs. Additionally, the as-prepared nanocomposite film also shows improved efficiency when used as a photocatalyst platform in the production of hydrogen gas. Such improvement in the performance of water splitting and photocatalytic hydrogen gas production activity can be credited to the surface plasmonic resonance of Ag NCs present on the surface of the NTs, which renders improved light absorption and better charge separation. The current work can serve as a model of study for designing more advanced nanoarchitecture photoelectrode for renewable energy application.

Rutile TiO2–Pd Photocatalysts for Hydrogen Gas Production from Methanol Reforming

2014 ◽  
Vol 58 (2-3) ◽  
pp. 70-76 ◽  
Author(s):  
H. Bahruji ◽  
M. Bowker ◽  
P. R. Davies ◽  
D. J. Morgan ◽  
C. A. Morton ◽  
...  
Keyword(s):  
Gas Production ◽  
Hydrogen Gas ◽  
Methanol Reforming ◽  
Rutile Tio2

Efficient hydrogen gas production from cassava and food waste by a two-step process of dark fermentation and photo-fermentation

2009 ◽  
Vol 33 (10) ◽  
pp. 1458-1463 ◽  
Author(s):  
Wenming Zong ◽  
Ruisong Yu ◽  
Peng Zhang ◽  
Meizhen Fan ◽  
Zhihua Zhou
Keyword(s):  
Food Waste ◽  
Dark Fermentation ◽  
Gas Production ◽  
Hydrogen Gas ◽  
Step Process

Hydrogen gas production with an electroformed Ni mesh cathode catalysts in a single-chamber microbial electrolysis cell (MEC)

2015 ◽  
Vol 40 (41) ◽  
pp. 14095-14103 ◽  
Author(s):  
Abudukeremu Kadier ◽  
Yibadatihan Simayi ◽  
K. Chandrasekhar ◽  
Manal Ismail ◽  
Mohd Sahaid Kalil
Keyword(s):  
Gas Production ◽  
Hydrogen Gas ◽  
Electrolysis Cell ◽  
Microbial Electrolysis Cell ◽  
Single Chamber ◽  
Cathode Catalysts ◽  
Microbial Electrolysis
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