• 한국수소및신에너지학회논문집
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• 제18권2호
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• pp.151-156
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• 2007

Solar cell and nanofiltration membrane were utilized in a system of enzymatic hydrogen production through light-sensitized photoanode, which resembles photoelectrochemical(PEC) configuration. Solar cell uses no additional light energy to increase energy for electrons to reduce protons and for holes to oxidize water to oxygen, and nanofiltration membrane replaces a salt bridge successfully with increased ion transport capability. With this system configuration, optimized amount of enzyme(10.98 unit), and an anodized tubular $TiO_2$ electrode($5^{\circ}C$/1 hr in 0.5 wt% HF-$650^{\circ}C$/5 hr) hydrogen evolved at a rate of ca. $43\;{\mu}mol/(cm^2{\times}hr)$ in a cathodic compartment and oxygen generated at a rate of ca. $20\;{\mu}mol/(cm^2{\times}hr)$ in an anodic compartment. The stoichiometric evolution of gases indicated that water was splitted in the system.

• 한국수소및신에너지학회논문집
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• 제18권3호
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• pp.244-249
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• 2007

The present work considers the concept of enzymatic photoelectrochemical generation of hydrogen through water splitting using a Xe lamp as a source of light. A solar cell was applied to the system in order to shift the level of electrochemical energy of the system, resulting in the rate of hydrogen production at $43\;{\mu}mol/(cm^2{\times}hr)$ in cathodic compartment with an anodized tubular $TiO_2$ electrode(ATTE, $5^{\circ}C$/1hr in 0.5 wt% HF-$650^{\circ}C$/5hr). The trend of the rate of hydrogen production, for the ATTEs with different annealing temperature from $350^{\circ}C$ to $850^{\circ}C$, fairly well coincided with the photoelectrical properties measured by potentiostat. The actual chemical bias through imposition of two electrolytes of different pHs between anode(13.68) and cathode(7.5) was 0.24eV.

• 화약ㆍ발파
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• 제26권2호
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• pp.92-98
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• 2008

발파진동 계측방법은 일반적으로 수동식 방법과 자동화 방법으로 나눌 수 있다. 이중에서 자동화 계측방법은 계측원의 수동적 작동에 의한 방법에 의존하지 않고 별도의 공간(사무실 등)에서 원격장치를 이용하여 진동측정기를 작동시켜 데이터를 전송받게 된다. 본 연구에서는 태양전지를 이용한 발파진동 자동화 계측시스템 운영 연구사례를 소개하고자 한다. 향후, 계측원 접근이 어렵고 발파작업중에 진동값 변화추이를 수시로 관찰이 필요한 현장에서는 이와 같은 쏠라셀을 이용한 자동화 계측시스템이 매우 유용하게 활용될 수 있으며 발파진동 제어와 안전발파 관리가 효과적으로 이루어질 수 있을 것으로 사료된다.